SWAP空间扩展
方法一 增加硬盘或分区扩展
swap -s
mkswap /dev/sdd6
blkid /dev/sdd6
swapon /dev/sdd6
swapon -s
vim /etc/fstab
/dev/sdd6 swap swap defaults 0 0
开机自动扩容
swap -s
[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 1G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part└─vg7-lv7 253:7 0 1G 0 lvm /u7
sr0 11:0 1 4.4G 0 rom /mnt
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[root@web ~]# free -mtotal used free shared buff/cache available
Mem: 972 496 76 31 399 272
Swap: 2047 0 2047
[root@web ~]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 21M 466M 5% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 14G 3.6G 80% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
/dev/mapper/vg7-lv7 976M 960M 0 100% /u7
tmpfs 98M 0 98M 0% /run/user/0
[root@web ~]# blkid /dev/sdd1
/dev/sdd1: UUID="ZF85cE-hRgW-TiNQ-KwDo-ih46-oFyo-RIJvLV" TYPE="LVM2_member"
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[root@web ~]# swapon -s
文件名 类型 大小 已用 权限
/dev/dm-1 partition 2097148 0 -2
[root@web ~]# mkswap /dev/sdd6
mkswap: /dev/sdd6: warning: wiping old LVM2_member signature.
正在设置交换空间版本 1，大小 = 2097148 KiB
无标签，UUID=4ef714ca-d5de-4f65-abc2-1e58eb25132b
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[root@web ~]# blkid /dev/sdd6
/dev/sdd6: UUID="4ef714ca-d5de-4f65-abc2-1e58eb25132b" TYPE="swap"
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[root@web ~]# swapon /dev/sdd6
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[root@web ~]# swapon -s
文件名 类型 大小 已用 权限
/dev/dm-1 partition 2097148 8 -2
/dev/sdd6 partition 2097148 0 -3
[root@web ~]# vim /etc/fstab
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[root@web ~]# cat /etc/fstab#
# /etc/fstab
# Created by anaconda on Sat Apr 19 17:11:28 2025
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/centos-root / xfs defaults 0 0
UUID=0671af2f-69a1-4a84-bb51-ceb937bc1a92 /boot xfs defaults 0 0
/dev/mapper/centos-swap swap swap defaults 0 0
/dev/sdb2 /u2 ext4 defaults 0 0
/dev/sdd6 swap swap defaults 0 0
[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 1G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part└─vg7-lv7 253:7 0 1G 0 lvm /u7
sr0 11:0 1 4.4G 0 rom /mnt方法二 模拟大文件扩容swap
dd if=/dev/zero of=/tmp/swapfile bs=1M count=1024
mkswap /tmp/swapfile
swapon -p 1 /tmp/swapfile
swapon -s
vim /etc/fstab
/tmp/swapfile swap swap defaults,pir=1 0 0
[root@web ~]# dd if=/dev/zero of=/tmp/swapfile bs=1M count=1024
dd: 写入"/tmp/swapfile" 出错: 设备上没有空间
记录了1+0 的读入
记录了0+0 的写出
0字节(0 B)已复制，0.000944418 秒，0.0 kB/秒
[root@web ~]# du -sh /dev/swapfile
du: 无法访问"/dev/swapfile": 没有那个文件或目录
[root@web ~]# du -sh /tmp/swapfile
0 /tmp/swapfile
[root@web ~]# free -mtotal used free shared buff/cache available
Mem: 972 427 75 26 469 367
Swap: 4095 5 4090
[root@web ~]# mkswap /tmp/swapfile
mkswap: error: swap area needs to be at least 40 KiB用法mkswap [选项] 设备 [大小]选项：-c, --check 创建交换区前检查坏块-f, --force 允许交换区大于设备大小-p, --pagesize SIZE 指定页大小为 SIZE 字节-L, --label LABEL 指定标签为 LABEL-v, --swapversion NUM 指定交换空间版本号为 NUM-U, --uuid UUID 指定要使用的 UUID-V, --version 输出版本信息并退出-h, --help 显示此帮助并退出[root@web ~]# mkswap /tmp/swapfile
mkswap: error: swap area needs to be at least 40 KiB用法mkswap [选项] 设备 [大小]选项：-c, --check 创建交换区前检查坏块-f, --force 允许交换区大于设备大小-p, --pagesize SIZE 指定页大小为 SIZE 字节-L, --label LABEL 指定标签为 LABEL-v, --swapversion NUM 指定交换空间版本号为 NUM-U, --uuid UUID 指定要使用的 UUID-V, --version 输出版本信息并退出-h, --help 显示此帮助并退出[root@web ~]# rm -rf /c
cc.conf code/
[root@web ~]# rm -rf /Centos69.iso
[root@web ~]# dd if=/dev/zero of=/tmp/swapfile bs=1M count=1024
记录了1024+0 的读入
记录了1024+0 的写出
1073741824字节(1.1 GB)已复制，0.917215 秒，1.2 GB/秒
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[root@web ~]# mkswap /tmp/swapfile
正在设置交换空间版本 1，大小 = 1048572 KiB
无标签，UUID=670f9718-5b02-4921-9b1d-4a817830d079
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[root@web ~]# swapon -p 1 /tmp/swapfile
swapon: /tmp/swapfile：不安全的权限 0644，建议使用 0600。
[root@web ~]# ll /tmp/swapfile
-rw-r--r-- 1 root root 1073741824 7月 20 18:45 /tmp/swapfile
[root@web ~]# swapon -s
文件名 类型 大小 已用 权限
/dev/dm-1 partition 2097148 5120 -2
/dev/sdd6 partition 2097148 0 -3
/tmp/swapfile file 1048572 0 1
[root@web ~]# free -mtotal used free shared buff/cache available
Mem: 972 432 71 26 468 352
Swap: 5119 5 5114
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[root@web ~]# vim /etc/fstab
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[root@web ~]# cat /etc/fstab#
# /etc/fstab
# Created by anaconda on Sat Apr 19 17:11:28 2025
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/centos-root / xfs defaults 0 0
UUID=0671af2f-69a1-4a84-bb51-ceb937bc1a92 /boot xfs defaults 0 0
/dev/mapper/centos-swap swap swap defaults 0 0
/dev/sdb2 /u2 ext4 defaults 0 0
/dev/sdd6 swap swap defaults 0 0
/tmp/swapfile swap swap defaults,pir=1 0 0gdisk
> 2T 分区 gdisk
fdisk用小的
逻辑券管理
面粉 面 面团 馒头 煮馒头 装碗
hd pv物理卷 vg卷组 lv逻辑卷 mkfs格式化 mount挂载
逻辑券创建
分区
fdisk /dev/sdd
pvcreate /dev/sdd7
pvcreate /dev/sdd8
pvs
vgcreate vg7 /dev/sdd7 /dev/sdd8
vgs
lvcreate -n lv7 -L 2G vg7
lvcreate -n lv8 -l50%free vg7
lvs
mkfs.exte /dev/vg7/lv7
mkdir /u7
mount /dev/vg7/lv7 /u7
df -h
[root@web ~]# pvcreate /dev/sdd7WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.Physical volume "/dev/sdd7" successfully created.
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[root@web ~]# pvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.PV VG Fmt Attr PSize PFree/dev/sda2 centos lvm2 a-- <19.00g 0/dev/sdb5 vg01 lvm2 a-- 1020.00m 724.00m/dev/sdb6 vg01 lvm2 a-- 1020.00m 0/dev/sdb7 vg01 lvm2 a-- 1020.00m 40.00m/dev/sdb8 vg01 lvm2 a-- 1020.00m 0/dev/sdc1 vg_mysql lvm2 a-- <2.00g 0/dev/sdc2 vg_mysql lvm2 a-- <2.00g 0/dev/sdc5 vg_mysql lvm2 a-- <2.00g 0/dev/sdc6 vg_mysql lvm2 a-- <2.00g 0/dev/sdc7 vg_mysql lvm2 a-- 896.00m 880.00m/dev/sdd1 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd2 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd5 vg2 lvm2 a-- <2.00g <2.00g/dev/sdd7 lvm2 --- 2.00g 2.00g[unknown] vg2 lvm2 a-m <2.00g <2.00g
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[root@web ~]# pvcreate /dev/sdd8WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.Physical volume "/dev/sdd8" successfully created.
[root@web ~]# vgsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.VG #PV #LV #SN Attr VSize VFreecentos 1 2 0 wz--n- <19.00g 0vg01 4 3 0 wz--n- 3.98g 764.00mvg1 2 1 0 wz--n- 3.99g 2.99gvg2 2 0 0 wz-pn- 3.99g 3.99gvg_mysql 5 1 0 wz--n- <8.86g 880.00m
[root@web ~]# pvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.PV VG Fmt Attr PSize PFree/dev/sda2 centos lvm2 a-- <19.00g 0/dev/sdb5 vg01 lvm2 a-- 1020.00m 724.00m/dev/sdb6 vg01 lvm2 a-- 1020.00m 0/dev/sdb7 vg01 lvm2 a-- 1020.00m 40.00m/dev/sdb8 vg01 lvm2 a-- 1020.00m 0/dev/sdc1 vg_mysql lvm2 a-- <2.00g 0/dev/sdc2 vg_mysql lvm2 a-- <2.00g 0/dev/sdc5 vg_mysql lvm2 a-- <2.00g 0/dev/sdc6 vg_mysql lvm2 a-- <2.00g 0/dev/sdc7 vg_mysql lvm2 a-- 896.00m 880.00m/dev/sdd1 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd2 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd5 vg2 lvm2 a-- <2.00g <2.00g/dev/sdd7 lvm2 --- 2.00g 2.00g/dev/sdd8 lvm2 --- 2.00g 2.00g[unknown] vg2 lvm2 a-m <2.00g <2.00g
[root@web ~]# vgcreate vg7No command with matching syntax recognised. Run 'vgcreate --help' for more information.Correct command syntax is:vgcreate VG_new PV ...[root@web ~]# vgcreate vg7 /dev/sdd7 /dev/sdd8WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.Volume group "vg7" successfully created
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[root@web ~]# vgsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.VG #PV #LV #SN Attr VSize VFreecentos 1 2 0 wz--n- <19.00g 0vg01 4 3 0 wz--n- 3.98g 764.00mvg1 2 1 0 wz--n- 3.99g 2.99gvg2 2 0 0 wz-pn- 3.99g 3.99gvg7 2 0 0 wz--n- 3.99g 3.99gvg_mysql 5 1 0 wz--n- <8.86g 880.00m
[root@web ~]# pvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.PV VG Fmt Attr PSize PFree/dev/sda2 centos lvm2 a-- <19.00g 0/dev/sdb5 vg01 lvm2 a-- 1020.00m 724.00m/dev/sdb6 vg01 lvm2 a-- 1020.00m 0/dev/sdb7 vg01 lvm2 a-- 1020.00m 40.00m/dev/sdb8 vg01 lvm2 a-- 1020.00m 0/dev/sdc1 vg_mysql lvm2 a-- <2.00g 0/dev/sdc2 vg_mysql lvm2 a-- <2.00g 0/dev/sdc5 vg_mysql lvm2 a-- <2.00g 0/dev/sdc6 vg_mysql lvm2 a-- <2.00g 0/dev/sdc7 vg_mysql lvm2 a-- 896.00m 880.00m/dev/sdd1 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd2 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd5 vg2 lvm2 a-- <2.00g <2.00g/dev/sdd7 vg7 lvm2 a-- <2.00g <2.00g/dev/sdd8 vg7 lvm2 a-- <2.00g <2.00g[unknown] vg2 lvm2 a-m <2.00g <2.00g
[root@web ~]# lvcreate -n lv7 -l 50%free/dev/sdd7Specified %free/dev/sdd7 is unknown.Invalid argument for --extents: 50%free/dev/sdd7Error during parsing of command line.
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[root@web ~]# lvcreate -n lv7 -l50%free vg7
WARNING: ext4 signature detected on /dev/vg7/lv7 at offset 1080. Wipe it? [y/n]: mWARNING: Invalid input 'm'.
WARNING: ext4 signature detected on /dev/vg7/lv7 at offset 1080. Wipe it? [y/n]: nAborted wiping of ext4.1 existing signature left on the device.Logical volume "lv7" created.
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[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv7 vg7 -wi-a----- <2.00glv_mysql vg_mysql -wi-ao---- 8.00g
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[root@web ~]# lvcreate -n lv8 -l 100No command with matching syntax recognised. Run 'lvcreate --help' for more information.Nearest similar command has syntax:lvcreate --type error -L|--size Size[m|UNIT] VGCreate an LV that returns errors when used.[root@web ~]# lvcreate -n lv8 -L 1G vg7Logical volume "lv8" created.
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[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv7 vg7 -wi-a----- <2.00glv8 vg7 -wi-a----- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
[root@web ~]# ll /dev/vg7/lv7
lrwxrwxrwx 1 root root 7 7月 20 20:12 /dev/vg7/lv7 -> ../dm-7
[root@web ~]# ll /dev/mapper/vg7-lv8
lrwxrwxrwx 1 root root 7 7月 20 20:16 /dev/mapper/vg7-lv8 -> ../dm-8
[root@web ~]# mkfs.ext4 /dev/sdd7
mke2fs 1.42.9 (28-Dec-2013)
/dev/sdd7 is apparently in use by the system; will not make a 文件系统 here!
[root@web ~]# blkid /dev/vg7/lv7
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[root@web ~]# mkfs.ext4 /dev/vg7/lv7
mke2fs 1.42.9 (28-Dec-2013)
文件系统标签=
OS type: Linux
块大小=4096 (log=2)
分块大小=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
130816 inodes, 523264 blocks
26163 blocks (5.00%) reserved for the super user
第一个数据块=0
Maximum filesystem blocks=536870912
16 block groups
32768 blocks per group, 32768 fragments per group
8176 inodes per group
Superblock backups stored on blocks:32768, 98304, 163840, 229376, 294912Allocating group tables: 完成
正在写入inode表: 完成
Creating journal (8192 blocks): 完成
Writing superblocks and filesystem accounting information: 完成[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv7 vg7 -wi-a----- <2.00glv8 vg7 -wi-a----- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
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[root@web ~]# mount /dev/vg7/lv7 /u7
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[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 2G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part└─vg7-lv8 253:8 0 1G 0 lvm
sr0 11:0 1 4.4G 0 rom /mnt
[root@web ~]# pvdisplay /dev/vg7/lv7Failed to find device for physical volume "/dev/vg7/lv7".
[root@web ~]# pvdisplay /dev/sdd7WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.--- Physical volume ---PV Name /dev/sdd7VG Name vg7PV Size 2.00 GiB / not usable 4.00 MiBAllocatable yes (but full)PE Size 4.00 MiBTotal PE 511Free PE 0Allocated PE 511PV UUID usPkZb-XdOY-jgZi-UDJZ-iDOy-oai8-cBfgIt您在 /var/spool/mail/root 中有邮件
[root@web ~]# vgdisplay vg7--- Volume group ---VG Name vg7System IDFormat lvm2Metadata Areas 2Metadata Sequence No 3VG Access read/writeVG Status resizableMAX LV 0Cur LV 2Open LV 1Max PV 0Cur PV 2Act PV 2VG Size 3.99 GiBPE Size 4.00 MiBTotal PE 1022Alloc PE / Size 767 / <3.00 GiBFree PE / Size 255 / 1020.00 MiBVG UUID KSJmej-clU3-NIyJ-nAuh-WaEX-zXWx-lr1uK4您在 /var/spool/mail/root 中有邮件
[root@web ~]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 21M 466M 5% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 16G 1.8G 90% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
tmpfs 98M 0 98M 0% /run/user/0
/dev/mapper/vg7-lv7 2.0G 6.0M 1.9G 1% /u7
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[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv7 vg7 -wi-ao---- <2.00glv8 vg7 -wi-a----- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 2G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part└─vg7-lv8 253:8 0 1G 0 lvm
sr0 11:0 1 4.4G 0 rom /mnt
[root@web ~]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 21M 466M 5% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 16G 1.8G 90% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
tmpfs 98M 0 98M 0% /run/user/0
/dev/mapper/vg7-lv7 2.0G 6.0M 1.9G 1% /u7
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[root@web ~]# lvdisplay /dev/vg7/lv8--- Logical volume ---LV Path /dev/vg7/lv8LV Name lv8VG Name vg7LV UUID cRYQDm-1n3E-MOZJ-F3h0-e0DX-8o56-EhObvDLV Write Access read/writeLV Creation host, time web.cn, 2025-07-20 20:16:38 +0800LV Status available# open 0LV Size 1.00 GiBCurrent LE 256Segments 1Allocation inheritRead ahead sectors auto- currently set to 8192Block device 253:8您在 /var/spool/mail/root 中有邮件解挂
lvremove /dev/vg7/lv7
vgremove vg7
pvremove /dev/sdd8
[root@web ~]# lvremove /dev/vg7/lv7
Do you really want to remove active logical volume vg7/lv7? [y/n]: yLogical volume "lv7" successfully removed
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[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
└─sdd8 8:56 0 2G 0 part
sr0 11:0 1 4.4G 0 rom /mnt
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[root@web ~]# pvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.PV VG Fmt Attr PSize PFree/dev/sda2 centos lvm2 a-- <19.00g 0/dev/sdb5 vg01 lvm2 a-- 1020.00m 724.00m/dev/sdb6 vg01 lvm2 a-- 1020.00m 0/dev/sdb7 vg01 lvm2 a-- 1020.00m 40.00m/dev/sdb8 vg01 lvm2 a-- 1020.00m 0/dev/sdc1 vg_mysql lvm2 a-- <2.00g 0/dev/sdc2 vg_mysql lvm2 a-- <2.00g 0/dev/sdc5 vg_mysql lvm2 a-- <2.00g 0/dev/sdc6 vg_mysql lvm2 a-- <2.00g 0/dev/sdc7 vg_mysql lvm2 a-- 896.00m 880.00m/dev/sdd1 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd2 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd5 vg2 lvm2 a-- <2.00g <2.00g/dev/sdd7 vg7 lvm2 a-- <2.00g <2.00g/dev/sdd8 vg7 lvm2 a-- <2.00g <2.00g[unknown] vg2 lvm2 a-m <2.00g <2.00g
[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
[root@web ~]# vgremove vg7Volume group "vg7" successfully removed
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[root@web ~]# pvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.PV VG Fmt Attr PSize PFree/dev/sda2 centos lvm2 a-- <19.00g 0/dev/sdb5 vg01 lvm2 a-- 1020.00m 724.00m/dev/sdb6 vg01 lvm2 a-- 1020.00m 0/dev/sdb7 vg01 lvm2 a-- 1020.00m 40.00m/dev/sdb8 vg01 lvm2 a-- 1020.00m 0/dev/sdc1 vg_mysql lvm2 a-- <2.00g 0/dev/sdc2 vg_mysql lvm2 a-- <2.00g 0/dev/sdc5 vg_mysql lvm2 a-- <2.00g 0/dev/sdc6 vg_mysql lvm2 a-- <2.00g 0/dev/sdc7 vg_mysql lvm2 a-- 896.00m 880.00m/dev/sdd1 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd2 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd5 vg2 lvm2 a-- <2.00g <2.00g/dev/sdd7 lvm2 --- 2.00g 2.00g/dev/sdd8 lvm2 --- 2.00g 2.00g[unknown] vg2 lvm2 a-m <2.00g <2.00g
[root@web ~]# pvremove /dev/sdd7WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.Labels on physical volume "/dev/sdd7" successfully wiped.
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[root@web ~]# pvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.PV VG Fmt Attr PSize PFree/dev/sda2 centos lvm2 a-- <19.00g 0/dev/sdb5 vg01 lvm2 a-- 1020.00m 724.00m/dev/sdb6 vg01 lvm2 a-- 1020.00m 0/dev/sdb7 vg01 lvm2 a-- 1020.00m 40.00m/dev/sdb8 vg01 lvm2 a-- 1020.00m 0/dev/sdc1 vg_mysql lvm2 a-- <2.00g 0/dev/sdc2 vg_mysql lvm2 a-- <2.00g 0/dev/sdc5 vg_mysql lvm2 a-- <2.00g 0/dev/sdc6 vg_mysql lvm2 a-- <2.00g 0/dev/sdc7 vg_mysql lvm2 a-- 896.00m 880.00m/dev/sdd1 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd2 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd5 vg2 lvm2 a-- <2.00g <2.00g/dev/sdd8 lvm2 --- 2.00g 2.00g[unknown] vg2 lvm2 a-m <2.00g <2.00g
[root@web ~]# pvremove /dev/sdd8WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.Labels on physical volume "/dev/sdd8" successfully wiped.
[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
[root@web ~]# pvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.PV VG Fmt Attr PSize PFree/dev/sda2 centos lvm2 a-- <19.00g 0/dev/sdb5 vg01 lvm2 a-- 1020.00m 724.00m/dev/sdb6 vg01 lvm2 a-- 1020.00m 0/dev/sdb7 vg01 lvm2 a-- 1020.00m 40.00m/dev/sdb8 vg01 lvm2 a-- 1020.00m 0/dev/sdc1 vg_mysql lvm2 a-- <2.00g 0/dev/sdc2 vg_mysql lvm2 a-- <2.00g 0/dev/sdc5 vg_mysql lvm2 a-- <2.00g 0/dev/sdc6 vg_mysql lvm2 a-- <2.00g 0/dev/sdc7 vg_mysql lvm2 a-- 896.00m 880.00m/dev/sdd1 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd2 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd5 vg2 lvm2 a-- <2.00g <2.00g[unknown] vg2 lvm2 a-m <2.00g <2.00g
[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
└─sdd8 8:56 0 2G 0 part
sr0 11:0 1 4.4G 0 rom /mnt扩容逻辑卷
卷组大小不够 扩容卷组，够 直接扩容lv
lvextend -L 2.2G /dev/vg7/lv7
lvextend -L +200M /dev/vg7/lv8
[root@web ~]# lvdisplay /dev/vg8/lv8Volume group "vg8" not foundCannot process volume group vg8
[root@web ~]# lvdisplay /dev/vg7/lv7--- Logical volume ---LV Path /dev/vg7/lv7LV Name lv7VG Name vg7LV UUID 3fRcmT-SVql-wET3-8my5-JWGw-pe32-4Yb8N4LV Write Access read/writeLV Creation host, time web.cn, 2025-07-20 20:08:33 +0800LV Status available# open 1LV Size <2.00 GiBCurrent LE 511Segments 1Allocation inheritRead ahead sectors auto- currently set to 8192Block device 253:7[root@web ~]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 21M 466M 5% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 16G 1.8G 90% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
tmpfs 98M 0 98M 0% /run/user/0
/dev/mapper/vg7-lv7 2.0G 6.0M 1.9G 1% /u7
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[root@web ~]# vgsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.VG #PV #LV #SN Attr VSize VFreecentos 1 2 0 wz--n- <19.00g 0vg01 4 3 0 wz--n- 3.98g 764.00mvg1 2 1 0 wz--n- 3.99g 2.99gvg2 2 0 0 wz-pn- 3.99g 3.99gvg7 2 2 0 wz--n- 3.99g 1020.00mvg_mysql 5 1 0 wz--n- <8.86g 880.00m
[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv7 vg7 -wi-ao---- <2.00glv8 vg7 -wi-a----- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
[root@web ~]# lvextend -L 100M /dev/vg7/lv7New size given (25 extents) not larger than existing size (511 extents)
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[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 2G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part└─vg7-lv8 253:8 0 1G 0 lvm
sr0 11:0 1 4.4G 0 rom /mnt
[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv7 vg7 -wi-ao---- <2.00glv8 vg7 -wi-a----- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
[root@web ~]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 21M 466M 5% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 16G 1.8G 90% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
tmpfs 98M 0 98M 0% /run/user/0
/dev/mapper/vg7-lv7 2.0G 6.0M 1.9G 1% /u7
[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv7 vg7 -wi-ao---- <2.00glv8 vg7 -wi-a----- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
[root@web ~]# vgsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.VG #PV #LV #SN Attr VSize VFreecentos 1 2 0 wz--n- <19.00g 0vg01 4 3 0 wz--n- 3.98g 764.00mvg1 2 1 0 wz--n- 3.99g 2.99gvg2 2 0 0 wz-pn- 3.99g 3.99gvg7 2 2 0 wz--n- 3.99g 1020.00mvg_mysql 5 1 0 wz--n- <8.86g 880.00m
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[root@web ~]# lvdisplay /dev/vg7/lv7--- Logical volume ---LV Path /dev/vg7/lv7LV Name lv7VG Name vg7LV UUID 3fRcmT-SVql-wET3-8my5-JWGw-pe32-4Yb8N4LV Write Access read/writeLV Creation host, time web.cn, 2025-07-20 20:08:33 +0800LV Status available# open 1LV Size <2.00 GiBCurrent LE 511Segments 1Allocation inheritRead ahead sectors auto- currently set to 8192Block device 253:7您在 /var/spool/mail/root 中有邮件
[root@web ~]# lvdisplay /dev/vg7/lv7|grep "LV size"
[root@web ~]# vgsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.VG #PV #LV #SN Attr VSize VFreecentos 1 2 0 wz--n- <19.00g 0vg01 4 3 0 wz--n- 3.98g 764.00mvg1 2 1 0 wz--n- 3.99g 2.99gvg2 2 0 0 wz-pn- 3.99g 3.99gvg7 2 2 0 wz--n- 3.99g 1020.00mvg_mysql 5 1 0 wz--n- <8.86g 880.00m
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[root@web ~]# lvdisplay /dev/vg7/lv8]Failed to find logical volume "vg7/lv8]"
[root@web ~]# lvdisplay /dev/vg7/lv8
\ --- Logical volume ---LV Path /dev/vg7/lv8LV Name lv8VG Name vg7LV UUID cRYQDm-1n3E-MOZJ-F3h0-e0DX-8o56-EhObvDLV Write Access read/writeLV Creation host, time web.cn, 2025-07-20 20:16:38 +0800LV Status available# open 0LV Size 1.00 GiBCurrent LE 256Segments 1Allocation inheritRead ahead sectors auto- currently set to 8192Block device 253:8[root@web ~]# lvextend /dev/vg7/lv8 -L 1.2GRounding size to boundary between physical extents: 1.20 GiB.Size of logical volume vg7/lv8 changed from 1.00 GiB (256 extents) to 1.20 GiB (308 extents).Logical volume vg7/lv8 successfully resized.
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[root@web ~]# lvdisplay /dev/vg7/lv8--- Logical volume ---LV Path /dev/vg7/lv8LV Name lv8VG Name vg7LV UUID cRYQDm-1n3E-MOZJ-F3h0-e0DX-8o56-EhObvDLV Write Access read/writeLV Creation host, time web.cn, 2025-07-20 20:16:38 +0800LV Status available# open 0LV Size 1.20 GiBCurrent LE 308Segments 1Allocation inheritRead ahead sectors auto- currently set to 8192Block device 253:8[root@web ~]# vgsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.VG #PV #LV #SN Attr VSize VFreecentos 1 2 0 wz--n- <19.00g 0vg01 4 3 0 wz--n- 3.98g 764.00mvg1 2 1 0 wz--n- 3.99g 2.99gvg2 2 0 0 wz-pn- 3.99g 3.99gvg7 2 2 0 wz--n- 3.99g 812.00mvg_mysql 5 1 0 wz--n- <8.86g 880.00m
[root@web ~]# lvextend -L +0.1G /dev/vg7/lv7Rounding size to boundary between physical extents: 104.00 MiB.Size of logical volume vg7/lv7 changed from <2.00 GiB (511 extents) to <2.10 GiB (537 extents).Logical volume vg7/lv7 successfully resized.
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[root@web ~]# lvdisplay /dev/vg7/lv7--- Logical volume ---LV Path /dev/vg7/lv7LV Name lv7VG Name vg7LV UUID 3fRcmT-SVql-wET3-8my5-JWGw-pe32-4Yb8N4LV Write Access read/writeLV Creation host, time web.cn, 2025-07-20 20:08:33 +0800LV Status available# open 1LV Size <2.10 GiBCurrent LE 537Segments 2Allocation inheritRead ahead sectors auto- currently set to 8192Block device 253:7数据库迁移
关闭服务
cd /usr/local/apache2
bin/apachectl -k stop
service mysql stop
备份
rsync -av /usr/local/mysql /u3
创建逻辑卷
lvcreate -n lv_mysql -L 8G vg_mysql
mkfs.ext4 /dev/vg_mysql/lv_mysql
cd /usr/local/mysql
rm -rf *
mount /dev/vg_mysql/lv_mysql /usr/local/mysql
service mysql start
service apache start
[root@web u1]# sblk
bash: sblk: 未找到命令...
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[root@web u1]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 2.1G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part├─vg7-lv7 253:7 0 2.1G 0 lvm /u7└─vg7-lv8 253:8 0 1.2G 0 lvm
sr0 11:0 1 4.4G 0 rom /mnt
[root@web u1]# mkdir /u3
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[root@web u1]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 27M 460M 6% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 16G 1.8G 90% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
tmpfs 98M 0 98M 0% /run/user/0
/dev/mapper/vg7-lv7 2.0G 6.0M 1.9G 1% /u7
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[root@web u1]# ll /usr/local/mysql
总用量 92
drwxr-xr-x 2 mysql mysql 4096 6月 29 21:02 bin
-rw-r--r-- 1 mysql mysql 17987 5月 17 2016 COPYING
drwxr-xr-x 6 mysql mysql 4096 7月 20 21:37 data
drwxr-xr-x 2 mysql mysql 4096 7月 1 21:39 docs
drwxr-xr-x 3 mysql mysql 4096 6月 29 21:02 include
drwxr-xr-x 3 mysql mysql 4096 6月 29 21:02 lib
drwx------ 2 root root 16384 7月 16 20:23 lost+found
drwxr-xr-x 4 mysql mysql 4096 6月 29 21:02 man
-rw-r--r-- 1 mysql mysql 943 6月 29 21:58 my.cnf
-rw-r--r-- 1 mysql mysql 943 7月 16 20:38 my-new.cnf
drwxr-xr-x 10 mysql mysql 4096 6月 29 21:02 mysql-test
-rw-r--r-- 1 mysql mysql 2496 5月 17 2016 README
drwxr-xr-x 2 mysql mysql 4096 6月 29 21:02 scripts
drwxr-xr-x 28 mysql mysql 4096 6月 29 21:02 share
drwxr-xr-x 4 mysql mysql 4096 7月 1 21:39 sql-bench
drwxr-xr-x 2 mysql mysql 4096 6月 29 21:02 support-files
[root@web u1]# ll -d /usr/local/mysql
drwxr-xr-x 14 mysql mysql 4096 7月 1 21:42 /usr/local/mysql
[root@web u1]# df -h /usr/local/mysql
文件系统 容量 已用 可用 已用% 挂载点
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
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[root@web u1]# ls /u3
[root@web u1]# rsync -av /usr/local/mysql /u3
sending incremental file list
mysql/
mysql/COPYING
mysql/README
mysql/my-new.cnf
mysql/my.cnf
[root@web mysql]# rsync -av /usr/local/mysql /u3
sending incremental file list
mysql/sent 69 bytes received 20 bytes 178.00 bytes/sec
total size is 0 speedup is 0.00
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[root@web mysql]# mount /dev/vg_mysql/lv_mysql /usr/local/mysql
[root@web mysql]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 27M 460M 6% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 17G 638M 97% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
tmpfs 98M 0 98M 0% /run/user/0
/dev/mapper/vg7-lv7 2.0G 6.0M 1.9G 1% /u7
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
[root@web mysql]# service mysql start
Starting MySQL. SUCCESS!
[root@web mysql]# ls /u7
lost+found
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[root@web mysql]# ls /u2
lost+found
[root@web mysql]# ls /dev/mapper/vg_mysql-lv_mysql
/dev/mapper/vg_mysql-lv_mysql
[root@web mysql]# cd /dev/mapper/
[root@web mapper]# ls
centos-root centos-swap control vg01-lv01 vg01-lv02 vg01-lv03 vg1-lv1 vg7-lv7 vg7-lv8 vg_mysql-lv_mysql
[root@web mapper]# ll
总用量 0
lrwxrwxrwx 1 root root 7 7月 17 19:32 centos-root -> ../dm-0
lrwxrwxrwx 1 root root 7 7月 17 19:32 centos-swap -> ../dm-1
crw------- 1 root root 10, 236 7月 17 19:32 control
lrwxrwxrwx 1 root root 7 7月 17 19:32 vg01-lv01 -> ../dm-3
lrwxrwxrwx 1 root root 7 7月 17 19:32 vg01-lv02 -> ../dm-4
lrwxrwxrwx 1 root root 7 7月 17 19:32 vg01-lv03 -> ../dm-5
lrwxrwxrwx 1 root root 7 7月 17 19:56 vg1-lv1 -> ../dm-6
lrwxrwxrwx 1 root root 7 7月 20 21:24 vg7-lv7 -> ../dm-7
lrwxrwxrwx 1 root root 7 7月 20 21:22 vg7-lv8 -> ../dm-8
lrwxrwxrwx 1 root root 7 7月 17 19:32 vg_mysql-lv_mysql -> ../dm-2
[root@web mapper]# cat vg_mysql-lv_mysql ▒▒
L▒▒▒▒ ▒▒|h▒▒|h▒▒S▒Ùwh<▒{▒d▒d▒\A+▒l▒a▒/usr/local/mysql4▒▒|ZgF▒▒)K▒-m0@
Ùwh
[root@web mapper]# ls vg_mysql-lv_mysql
vg_mysql-lv_mysql
[root@web mapper]# service mysql start
Starting MySQL SUCCESS!
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[root@web mapper]# cd /usr/local/apache2/
[root@web apache2]# service apache2 start
Redirecting to /bin/systemctl start apache2.service
Failed to start apache2.service: Unit not found.
[root@web apache2]# bin/apachectl -k start
[root@web apache2]#
问题
[root@web ~]# mkswap /dev/sdd6
mkswap: /dev/sdd6: warning: wiping old LVM2_member signature.
正在设置交换空间版本 1，大小 = 2097148 KiB
无标签，UUID=4ef714ca-d5de-4f65-abc2-1e58eb25132b
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[root@web ~]# pvcreate /dev/sdb1WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.
WARNING: ext4 signature detected on /dev/sdb1 at offset 1080. Wipe it? [y/n]: nAborted wiping of ext4.1 existing signature left on the device.
您在 /var/spool/mail/root 中有新邮件[root@web ~]# pvcreate /dev/sdd7WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.Physical volume "/dev/sdd7" successfully created.
[root@web ~]# lvcreate -n lv7 -l50%free vg7
WARNING: ext4 signature detected on /dev/vg7/lv7 at offset 1080. Wipe it? [y/n]:
[root@web ~]# lvextend -L 100M /dev/vg7/lv7New size given (25 extents) not larger than existing size (511 extents)
[root@web apache2]# service apache stop
Redirecting to /bin/systemctl stop apache.service
Failed to stop apache.service: Unit apache.service not loaded.
[root@web u1]# cd /usr/local/mysql
[root@web mysql]# ls
[root@web mysql]# ls
[root@web mysql]# ls
[root@web mysql]# rsync -av /usr/local/mysql /u3
sending incremental file list
mysql/sent 69 bytes received 20 bytes 178.00 bytes/sec
total size is 0 speedup is 0.00
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[root@web mysql]# mount /dev/vg_mysql/lv_mysql /usr/local/mysql
[root@web mysql]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 27M 460M 6% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 17G 638M 97% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
tmpfs 98M 0 98M 0% /run/user/0
/dev/mapper/vg7-lv7 2.0G 6.0M 1.9G 1% /u7
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
[root@web mysql]# service mysql start
Starting MySQL. SUCCESS!
[root@web mysql]#
记录
root@192.168.235.20's password:
▒▒▒ʱ▒▒ܾ▒
root@192.168.235.20's password:
▒▒▒ʱ▒▒ܾ▒
root@192.168.235.20's password:┌────────────────────────────────────────────────────────────────────┐│ • MobaXterm 20.0 • ││ (SSH client, X-server and networking tools) ││ ││ ➤ SSH session to root@192.168.235.20 ││ • SSH compression : ✘ ││ • SSH-browser : ✔ ││ • X11-forwarding : ✔ (remote display is forwarded through SSH) ││ • DISPLAY : ✔ (automatically set on remote server) ││ ││ ➤ For more info, ctrl+click on help or visit our website │└────────────────────────────────────────────────────────────────────┘Last failed login: Sun Jul 20 17:53:50 CST 2025 from 192.168.235.1 on ssh:notty
There were 2 failed login attempts since the last successful login.
Last login: Fri Jul 18 20:32:43 2025 from 192.168.235.1
[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 1G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part└─vg7-lv7 253:7 0 1G 0 lvm /u7
sr0 11:0 1 4.4G 0 rom /mnt
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[root@web ~]# free -mtotal used free shared buff/cache available
Mem: 972 496 76 31 399 272
Swap: 2047 0 2047
[root@web ~]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 21M 466M 5% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 14G 3.6G 80% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
/dev/mapper/vg7-lv7 976M 960M 0 100% /u7
tmpfs 98M 0 98M 0% /run/user/0
[root@web ~]# blkid /dev/sdd1
/dev/sdd1: UUID="ZF85cE-hRgW-TiNQ-KwDo-ih46-oFyo-RIJvLV" TYPE="LVM2_member"
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[root@web ~]# swapon -s
文件名 类型 大小 已用 权限
/dev/dm-1 partition 2097148 0 -2
[root@web ~]# mkswap /dev/sdd6
mkswap: /dev/sdd6: warning: wiping old LVM2_member signature.
正在设置交换空间版本 1，大小 = 2097148 KiB
无标签，UUID=4ef714ca-d5de-4f65-abc2-1e58eb25132b
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[root@web ~]# blkid /dev/sdd6
/dev/sdd6: UUID="4ef714ca-d5de-4f65-abc2-1e58eb25132b" TYPE="swap"
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[root@web ~]# swapon /dev/sdd6
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[root@web ~]# swapon -s
文件名 类型 大小 已用 权限
/dev/dm-1 partition 2097148 8 -2
/dev/sdd6 partition 2097148 0 -3
[root@web ~]# vim /etc/fstab
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[root@web ~]# cat /etc/fstab#
# /etc/fstab
# Created by anaconda on Sat Apr 19 17:11:28 2025
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/centos-root / xfs defaults 0 0
UUID=0671af2f-69a1-4a84-bb51-ceb937bc1a92 /boot xfs defaults 0 0
/dev/mapper/centos-swap swap swap defaults 0 0
/dev/sdb2 /u2 ext4 defaults 0 0
/dev/sdd6 swap swap defaults 0 0
[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 1G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part└─vg7-lv7 253:7 0 1G 0 lvm /u7
sr0 11:0 1 4.4G 0 rom /mnt
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[root@web ~]# df -u
df：无效选项 -- u
Try 'df --help' for more information.
[root@web ~]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 21M 466M 5% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 14G 3.6G 80% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
/dev/mapper/vg7-lv7 976M 960M 0 100% /u7
tmpfs 98M 0 98M 0% /run/user/0
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[root@web ~]# free -mtotal used free shared buff/cache available
Mem: 972 502 83 31 387 266
Swap: 4095 0 4095
[root@web ~]# swapn -s
bash: swapn: 未找到命令...
[root@web ~]# swapon -s
文件名 类型 大小 已用 权限
/dev/dm-1 partition 2097148 8 -2
/dev/sdd6 partition 2097148 0 -3
[root@web ~]# swap off /dev/sdd6
bash: swap: 未找到命令...
相似命令是： 'swapon'
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[root@web ~]# swapon off /dev/sdd6
swapon: stat 失败：off: 没有那个文件或目录
swapon: /dev/sdd6：swapon 失败: 设备或资源忙
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[root@web ~]# dd if=/dev/sr0 of=/Centos69.iso
dd: 正在写入"/Centos69.iso": 设备上没有空间
记录了5805697+0 的读入
记录了5805696+0 的写出
2972516352字节(3.0 GB)已复制，121.981 秒，24.4 MB/秒
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[root@web ~]# ls /Centos69.iso
/Centos69.iso
[root@web ~]# ll /Centos69.iso
-rw-r--r-- 1 root root 2972516352 7月 20 18:29 /Centos69.iso
[root@web ~]# dd if=/dev/zero of=/tmp/swapfile bs=1M count=1024
dd: 写入"/tmp/swapfile" 出错: 设备上没有空间
记录了1+0 的读入
记录了0+0 的写出
0字节(0 B)已复制，0.000944418 秒，0.0 kB/秒
[root@web ~]# du -sh /dev/swapfile
du: 无法访问"/dev/swapfile": 没有那个文件或目录
[root@web ~]# du -sh /tmp/swapfile
0 /tmp/swapfile
[root@web ~]# free -mtotal used free shared buff/cache available
Mem: 972 427 75 26 469 367
Swap: 4095 5 4090
[root@web ~]# mkswap /tmp/swapfile
mkswap: error: swap area needs to be at least 40 KiB用法mkswap [选项] 设备 [大小]选项：-c, --check 创建交换区前检查坏块-f, --force 允许交换区大于设备大小-p, --pagesize SIZE 指定页大小为 SIZE 字节-L, --label LABEL 指定标签为 LABEL-v, --swapversion NUM 指定交换空间版本号为 NUM-U, --uuid UUID 指定要使用的 UUID-V, --version 输出版本信息并退出-h, --help 显示此帮助并退出[root@web ~]# mkswap /tmp/swapfile
mkswap: error: swap area needs to be at least 40 KiB用法mkswap [选项] 设备 [大小]选项：-c, --check 创建交换区前检查坏块-f, --force 允许交换区大于设备大小-p, --pagesize SIZE 指定页大小为 SIZE 字节-L, --label LABEL 指定标签为 LABEL-v, --swapversion NUM 指定交换空间版本号为 NUM-U, --uuid UUID 指定要使用的 UUID-V, --version 输出版本信息并退出-h, --help 显示此帮助并退出[root@web ~]# rm -rf /c
cc.conf code/
[root@web ~]# rm -rf /Centos69.iso
[root@web ~]# dd if=/dev/zero of=/tmp/swapfile bs=1M count=1024
记录了1024+0 的读入
记录了1024+0 的写出
1073741824字节(1.1 GB)已复制，0.917215 秒，1.2 GB/秒
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[root@web ~]# mkswap /tmp/swapfile
正在设置交换空间版本 1，大小 = 1048572 KiB
无标签，UUID=670f9718-5b02-4921-9b1d-4a817830d079
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[root@web ~]# swapon -p 1 /tmp/swapfile
swapon: /tmp/swapfile：不安全的权限 0644，建议使用 0600。
[root@web ~]# ll /tmp/swapfile
-rw-r--r-- 1 root root 1073741824 7月 20 18:45 /tmp/swapfile
[root@web ~]# swapon -s
文件名 类型 大小 已用 权限
/dev/dm-1 partition 2097148 5120 -2
/dev/sdd6 partition 2097148 0 -3
/tmp/swapfile file 1048572 0 1
[root@web ~]# free -mtotal used free shared buff/cache available
Mem: 972 432 71 26 468 352
Swap: 5119 5 5114
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[root@web ~]# vim /etc/fstab
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[root@web ~]# cat /etc/fstab#
# /etc/fstab
# Created by anaconda on Sat Apr 19 17:11:28 2025
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/centos-root / xfs defaults 0 0
UUID=0671af2f-69a1-4a84-bb51-ceb937bc1a92 /boot xfs defaults 0 0
/dev/mapper/centos-swap swap swap defaults 0 0
/dev/sdb2 /u2 ext4 defaults 0 0
/dev/sdd6 swap swap defaults 0 0
/tmp/swapfile swap swap defaults,pir=1 0 0
[root@web ~]# yum install gdisk
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
local | 3.6 kB 00:00:00
软件包 gdisk-0.8.10-3.el7.x86_64 已安装并且是最新版本
无须任何处理
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[root@web ~]# yum list|grep gdisk
gdisk.x86_64 0.8.10-3.el7 @anaconda
[root@web ~]# yum install parted
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
软件包 parted-3.1-32.el7.x86_64 已安装并且是最新版本
无须任何处理
[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 1G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part└─vg7-lv7 253:7 0 1G 0 lvm /u7
sr0 11:0 1 4.4G 0 rom /mnt
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[root@web ~]# gdisk /dev/sdd3
GPT fdisk (gdisk) version 0.8.10Partition table scan:MBR: not presentBSD: not presentAPM: not presentGPT: not presentCreating new GPT entries.Command (? for help): ?
b back up GPT data to a file
c change a partition's name
d delete a partition
i show detailed information on a partition
l list known partition types
n add a new partition
o create a new empty GUID partition table (GPT)
p print the partition table
q quit without saving changes
r recovery and transformation options (experts only)
s sort partitions
t change a partition's type code
v verify disk
w write table to disk and exit
x extra functionality (experts only)
? print this menuCommand (? for help): q
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[root@web ~]#
Network error: Software caused connection abort───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────Session stopped- Press <return> to exit tab- Press R to restart session- Press S to save terminal output to file
Session stopped- Press <return> to exit tab- Press R to restart session- Press S to save terminal output to file
root@192.168.235.20's password:
▒▒▒ʱ▒▒ܾ▒
root@192.168.235.20's password:┌────────────────────────────────────────────────────────────────────┐│ • MobaXterm 20.0 • ││ (SSH client, X-server and networking tools) ││ ││ ➤ SSH session to root@192.168.235.20 ││ • SSH compression : ✘ ││ • SSH-browser : ✔ ││ • X11-forwarding : ✔ (remote display is forwarded through SSH) ││ • DISPLAY : ✔ (automatically set on remote server) ││ ││ ➤ For more info, ctrl+click on help or visit our website │└────────────────────────────────────────────────────────────────────┘Last failed login: Sun Jul 20 19:38:36 CST 2025 from 192.168.235.1 on ssh:notty
There was 1 failed login attempt since the last successful login.
Last login: Sun Jul 20 18:28:01 2025 from 192.168.235.1
[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 1G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part└─vg7-lv7 253:7 0 1G 0 lvm /u7
sr0 11:0 1 4.4G 0 rom /mnt
[root@web ~]# pvcreate /dev/sdb1WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.
WARNING: ext4 signature detected on /dev/sdb1 at offset 1080. Wipe it? [y/n]: nAborted wiping of ext4.1 existing signature left on the device.
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[root@web ~]# pvcreate /dev/sdb3WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.
WARNING: ext4 signature detected on /dev/sdb3 at offset 1080. Wipe it? [y/n]: nAborted wiping of ext4.1 existing signature left on the device.
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[root@web ~]# umount /dev/sdd7 /u7
umount: /dev/sdd7：未挂载
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[root@web ~]# umount /u7
umount: /u7：未挂载
[root@web ~]# ls /u7
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[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 1G 0 lvm
└─sdd8 8:56 0 2G 0 part└─vg7-lv7 253:7 0 1G 0 lvm
sr0 11:0 1 4.4G 0 rom /mnt
[root@web ~]# ls /dev/vg7
lv7
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[root@web ~]# ls /dev/vg7/lv7
/dev/vg7/lv7
[root@web ~]# ll /dev/vg7/lv7
lrwxrwxrwx 1 root root 7 7月 17 22:24 /dev/vg7/lv7 -> ../dm-7
[root@web ~]# lvremove /dev/vg7/lv7
Do you really want to remove active logical volume vg7/lv7? [y/n]: yLogical volume "lv7" successfully removed
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[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
└─sdd8 8:56 0 2G 0 part
sr0 11:0 1 4.4G 0 rom /mnt
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[root@web ~]# pvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.PV VG Fmt Attr PSize PFree/dev/sda2 centos lvm2 a-- <19.00g 0/dev/sdb5 vg01 lvm2 a-- 1020.00m 724.00m/dev/sdb6 vg01 lvm2 a-- 1020.00m 0/dev/sdb7 vg01 lvm2 a-- 1020.00m 40.00m/dev/sdb8 vg01 lvm2 a-- 1020.00m 0/dev/sdc1 vg_mysql lvm2 a-- <2.00g 0/dev/sdc2 vg_mysql lvm2 a-- <2.00g 0/dev/sdc5 vg_mysql lvm2 a-- <2.00g 0/dev/sdc6 vg_mysql lvm2 a-- <2.00g 0/dev/sdc7 vg_mysql lvm2 a-- 896.00m 880.00m/dev/sdd1 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd2 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd5 vg2 lvm2 a-- <2.00g <2.00g/dev/sdd7 vg7 lvm2 a-- <2.00g <2.00g/dev/sdd8 vg7 lvm2 a-- <2.00g <2.00g[unknown] vg2 lvm2 a-m <2.00g <2.00g
[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
[root@web ~]# vgremove vg7Volume group "vg7" successfully removed
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[root@web ~]# pvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.PV VG Fmt Attr PSize PFree/dev/sda2 centos lvm2 a-- <19.00g 0/dev/sdb5 vg01 lvm2 a-- 1020.00m 724.00m/dev/sdb6 vg01 lvm2 a-- 1020.00m 0/dev/sdb7 vg01 lvm2 a-- 1020.00m 40.00m/dev/sdb8 vg01 lvm2 a-- 1020.00m 0/dev/sdc1 vg_mysql lvm2 a-- <2.00g 0/dev/sdc2 vg_mysql lvm2 a-- <2.00g 0/dev/sdc5 vg_mysql lvm2 a-- <2.00g 0/dev/sdc6 vg_mysql lvm2 a-- <2.00g 0/dev/sdc7 vg_mysql lvm2 a-- 896.00m 880.00m/dev/sdd1 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd2 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd5 vg2 lvm2 a-- <2.00g <2.00g/dev/sdd7 lvm2 --- 2.00g 2.00g/dev/sdd8 lvm2 --- 2.00g 2.00g[unknown] vg2 lvm2 a-m <2.00g <2.00g
[root@web ~]# pvremove /dev/sdd7WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.Labels on physical volume "/dev/sdd7" successfully wiped.
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[root@web ~]# pvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.PV VG Fmt Attr PSize PFree/dev/sda2 centos lvm2 a-- <19.00g 0/dev/sdb5 vg01 lvm2 a-- 1020.00m 724.00m/dev/sdb6 vg01 lvm2 a-- 1020.00m 0/dev/sdb7 vg01 lvm2 a-- 1020.00m 40.00m/dev/sdb8 vg01 lvm2 a-- 1020.00m 0/dev/sdc1 vg_mysql lvm2 a-- <2.00g 0/dev/sdc2 vg_mysql lvm2 a-- <2.00g 0/dev/sdc5 vg_mysql lvm2 a-- <2.00g 0/dev/sdc6 vg_mysql lvm2 a-- <2.00g 0/dev/sdc7 vg_mysql lvm2 a-- 896.00m 880.00m/dev/sdd1 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd2 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd5 vg2 lvm2 a-- <2.00g <2.00g/dev/sdd8 lvm2 --- 2.00g 2.00g[unknown] vg2 lvm2 a-m <2.00g <2.00g
[root@web ~]# pvremove /dev/sdd8WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.Labels on physical volume "/dev/sdd8" successfully wiped.
[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
[root@web ~]# pvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.PV VG Fmt Attr PSize PFree/dev/sda2 centos lvm2 a-- <19.00g 0/dev/sdb5 vg01 lvm2 a-- 1020.00m 724.00m/dev/sdb6 vg01 lvm2 a-- 1020.00m 0/dev/sdb7 vg01 lvm2 a-- 1020.00m 40.00m/dev/sdb8 vg01 lvm2 a-- 1020.00m 0/dev/sdc1 vg_mysql lvm2 a-- <2.00g 0/dev/sdc2 vg_mysql lvm2 a-- <2.00g 0/dev/sdc5 vg_mysql lvm2 a-- <2.00g 0/dev/sdc6 vg_mysql lvm2 a-- <2.00g 0/dev/sdc7 vg_mysql lvm2 a-- 896.00m 880.00m/dev/sdd1 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd2 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd5 vg2 lvm2 a-- <2.00g <2.00g[unknown] vg2 lvm2 a-m <2.00g <2.00g
[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
└─sdd8 8:56 0 2G 0 part
sr0 11:0 1 4.4G 0 rom /mnt
[root@web ~]# pvcreate /dev/sdd7WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.Physical volume "/dev/sdd7" successfully created.
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[root@web ~]# pvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.PV VG Fmt Attr PSize PFree/dev/sda2 centos lvm2 a-- <19.00g 0/dev/sdb5 vg01 lvm2 a-- 1020.00m 724.00m/dev/sdb6 vg01 lvm2 a-- 1020.00m 0/dev/sdb7 vg01 lvm2 a-- 1020.00m 40.00m/dev/sdb8 vg01 lvm2 a-- 1020.00m 0/dev/sdc1 vg_mysql lvm2 a-- <2.00g 0/dev/sdc2 vg_mysql lvm2 a-- <2.00g 0/dev/sdc5 vg_mysql lvm2 a-- <2.00g 0/dev/sdc6 vg_mysql lvm2 a-- <2.00g 0/dev/sdc7 vg_mysql lvm2 a-- 896.00m 880.00m/dev/sdd1 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd2 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd5 vg2 lvm2 a-- <2.00g <2.00g/dev/sdd7 lvm2 --- 2.00g 2.00g[unknown] vg2 lvm2 a-m <2.00g <2.00g
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[root@web ~]# pvcreate /dev/sdd8WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.Physical volume "/dev/sdd8" successfully created.
[root@web ~]# vgsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.VG #PV #LV #SN Attr VSize VFreecentos 1 2 0 wz--n- <19.00g 0vg01 4 3 0 wz--n- 3.98g 764.00mvg1 2 1 0 wz--n- 3.99g 2.99gvg2 2 0 0 wz-pn- 3.99g 3.99gvg_mysql 5 1 0 wz--n- <8.86g 880.00m
[root@web ~]# pvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.PV VG Fmt Attr PSize PFree/dev/sda2 centos lvm2 a-- <19.00g 0/dev/sdb5 vg01 lvm2 a-- 1020.00m 724.00m/dev/sdb6 vg01 lvm2 a-- 1020.00m 0/dev/sdb7 vg01 lvm2 a-- 1020.00m 40.00m/dev/sdb8 vg01 lvm2 a-- 1020.00m 0/dev/sdc1 vg_mysql lvm2 a-- <2.00g 0/dev/sdc2 vg_mysql lvm2 a-- <2.00g 0/dev/sdc5 vg_mysql lvm2 a-- <2.00g 0/dev/sdc6 vg_mysql lvm2 a-- <2.00g 0/dev/sdc7 vg_mysql lvm2 a-- 896.00m 880.00m/dev/sdd1 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd2 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd5 vg2 lvm2 a-- <2.00g <2.00g/dev/sdd7 lvm2 --- 2.00g 2.00g/dev/sdd8 lvm2 --- 2.00g 2.00g[unknown] vg2 lvm2 a-m <2.00g <2.00g
[root@web ~]# vgcreate vg7No command with matching syntax recognised. Run 'vgcreate --help' for more information.Correct command syntax is:vgcreate VG_new PV ...[root@web ~]# vgcreate vg7 /dev/sdd7 /dev/sdd8WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.Volume group "vg7" successfully created
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[root@web ~]# vgsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.VG #PV #LV #SN Attr VSize VFreecentos 1 2 0 wz--n- <19.00g 0vg01 4 3 0 wz--n- 3.98g 764.00mvg1 2 1 0 wz--n- 3.99g 2.99gvg2 2 0 0 wz-pn- 3.99g 3.99gvg7 2 0 0 wz--n- 3.99g 3.99gvg_mysql 5 1 0 wz--n- <8.86g 880.00m
[root@web ~]# pvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.PV VG Fmt Attr PSize PFree/dev/sda2 centos lvm2 a-- <19.00g 0/dev/sdb5 vg01 lvm2 a-- 1020.00m 724.00m/dev/sdb6 vg01 lvm2 a-- 1020.00m 0/dev/sdb7 vg01 lvm2 a-- 1020.00m 40.00m/dev/sdb8 vg01 lvm2 a-- 1020.00m 0/dev/sdc1 vg_mysql lvm2 a-- <2.00g 0/dev/sdc2 vg_mysql lvm2 a-- <2.00g 0/dev/sdc5 vg_mysql lvm2 a-- <2.00g 0/dev/sdc6 vg_mysql lvm2 a-- <2.00g 0/dev/sdc7 vg_mysql lvm2 a-- 896.00m 880.00m/dev/sdd1 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd2 vg1 lvm2 a-- <2.00g <1.50g/dev/sdd5 vg2 lvm2 a-- <2.00g <2.00g/dev/sdd7 vg7 lvm2 a-- <2.00g <2.00g/dev/sdd8 vg7 lvm2 a-- <2.00g <2.00g[unknown] vg2 lvm2 a-m <2.00g <2.00g
[root@web ~]# lvcreate -n lv7 -l 50%free/dev/sdd7Specified %free/dev/sdd7 is unknown.Invalid argument for --extents: 50%free/dev/sdd7Error during parsing of command line.
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[root@web ~]# lvcreate -n lv7 -l50%free vg7
WARNING: ext4 signature detected on /dev/vg7/lv7 at offset 1080. Wipe it? [y/n]: mWARNING: Invalid input 'm'.
WARNING: ext4 signature detected on /dev/vg7/lv7 at offset 1080. Wipe it? [y/n]: nAborted wiping of ext4.1 existing signature left on the device.Logical volume "lv7" created.
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[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv7 vg7 -wi-a----- <2.00glv_mysql vg_mysql -wi-ao---- 8.00g
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[root@web ~]# lvcreate -n lv8 -l 100No command with matching syntax recognised. Run 'lvcreate --help' for more information.Nearest similar command has syntax:lvcreate --type error -L|--size Size[m|UNIT] VGCreate an LV that returns errors when used.[root@web ~]# lvcreate -n lv8 -L 1G vg7Logical volume "lv8" created.
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[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv7 vg7 -wi-a----- <2.00glv8 vg7 -wi-a----- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
[root@web ~]# ll /dev/vg7/lv7
lrwxrwxrwx 1 root root 7 7月 20 20:12 /dev/vg7/lv7 -> ../dm-7
[root@web ~]# ll /dev/mapper/vg7-lv8
lrwxrwxrwx 1 root root 7 7月 20 20:16 /dev/mapper/vg7-lv8 -> ../dm-8
[root@web ~]# mkfs.ext4 /dev/sdd7
mke2fs 1.42.9 (28-Dec-2013)
/dev/sdd7 is apparently in use by the system; will not make a 文件系统 here!
[root@web ~]# blkid /dev/vg7/lv7
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[root@web ~]# mkfs.ext4 /dev/vg7/lv7
mke2fs 1.42.9 (28-Dec-2013)
文件系统标签=
OS type: Linux
块大小=4096 (log=2)
分块大小=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
130816 inodes, 523264 blocks
26163 blocks (5.00%) reserved for the super user
第一个数据块=0
Maximum filesystem blocks=536870912
16 block groups
32768 blocks per group, 32768 fragments per group
8176 inodes per group
Superblock backups stored on blocks:32768, 98304, 163840, 229376, 294912Allocating group tables: 完成
正在写入inode表: 完成
Creating journal (8192 blocks): 完成
Writing superblocks and filesystem accounting information: 完成[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv7 vg7 -wi-a----- <2.00glv8 vg7 -wi-a----- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
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[root@web ~]# mount /dev/vg7/lv7 /u7
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[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 2G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part└─vg7-lv8 253:8 0 1G 0 lvm
sr0 11:0 1 4.4G 0 rom /mnt
[root@web ~]# pvdisplay /dev/vg7/lv7Failed to find device for physical volume "/dev/vg7/lv7".
[root@web ~]# pvdisplay /dev/sdd7WARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.--- Physical volume ---PV Name /dev/sdd7VG Name vg7PV Size 2.00 GiB / not usable 4.00 MiBAllocatable yes (but full)PE Size 4.00 MiBTotal PE 511Free PE 0Allocated PE 511PV UUID usPkZb-XdOY-jgZi-UDJZ-iDOy-oai8-cBfgIt您在 /var/spool/mail/root 中有邮件
[root@web ~]# vgdisplay vg7--- Volume group ---VG Name vg7System IDFormat lvm2Metadata Areas 2Metadata Sequence No 3VG Access read/writeVG Status resizableMAX LV 0Cur LV 2Open LV 1Max PV 0Cur PV 2Act PV 2VG Size 3.99 GiBPE Size 4.00 MiBTotal PE 1022Alloc PE / Size 767 / <3.00 GiBFree PE / Size 255 / 1020.00 MiBVG UUID KSJmej-clU3-NIyJ-nAuh-WaEX-zXWx-lr1uK4您在 /var/spool/mail/root 中有邮件
[root@web ~]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 21M 466M 5% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 16G 1.8G 90% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
tmpfs 98M 0 98M 0% /run/user/0
/dev/mapper/vg7-lv7 2.0G 6.0M 1.9G 1% /u7
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[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv7 vg7 -wi-ao---- <2.00glv8 vg7 -wi-a----- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 2G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part└─vg7-lv8 253:8 0 1G 0 lvm
sr0 11:0 1 4.4G 0 rom /mnt
[root@web ~]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 21M 466M 5% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 16G 1.8G 90% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
tmpfs 98M 0 98M 0% /run/user/0
/dev/mapper/vg7-lv7 2.0G 6.0M 1.9G 1% /u7
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[root@web ~]# lvdisplay /dev/vg7/lv8--- Logical volume ---LV Path /dev/vg7/lv8LV Name lv8VG Name vg7LV UUID cRYQDm-1n3E-MOZJ-F3h0-e0DX-8o56-EhObvDLV Write Access read/writeLV Creation host, time web.cn, 2025-07-20 20:16:38 +0800LV Status available# open 0LV Size 1.00 GiBCurrent LE 256Segments 1Allocation inheritRead ahead sectors auto- currently set to 8192Block device 253:8您在 /var/spool/mail/root 中有邮件
[root@web ~]# lvdisplay /dev/vg8/lv8Volume group "vg8" not foundCannot process volume group vg8
[root@web ~]# lvdisplay /dev/vg7/lv7--- Logical volume ---LV Path /dev/vg7/lv7LV Name lv7VG Name vg7LV UUID 3fRcmT-SVql-wET3-8my5-JWGw-pe32-4Yb8N4LV Write Access read/writeLV Creation host, time web.cn, 2025-07-20 20:08:33 +0800LV Status available# open 1LV Size <2.00 GiBCurrent LE 511Segments 1Allocation inheritRead ahead sectors auto- currently set to 8192Block device 253:7[root@web ~]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 21M 466M 5% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 16G 1.8G 90% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
tmpfs 98M 0 98M 0% /run/user/0
/dev/mapper/vg7-lv7 2.0G 6.0M 1.9G 1% /u7
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[root@web ~]# vgsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.VG #PV #LV #SN Attr VSize VFreecentos 1 2 0 wz--n- <19.00g 0vg01 4 3 0 wz--n- 3.98g 764.00mvg1 2 1 0 wz--n- 3.99g 2.99gvg2 2 0 0 wz-pn- 3.99g 3.99gvg7 2 2 0 wz--n- 3.99g 1020.00mvg_mysql 5 1 0 wz--n- <8.86g 880.00m
[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv7 vg7 -wi-ao---- <2.00glv8 vg7 -wi-a----- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
[root@web ~]# lvextend -L 100M /dev/vg7/lv7New size given (25 extents) not larger than existing size (511 extents)
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[root@web ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 2G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part└─vg7-lv8 253:8 0 1G 0 lvm
sr0 11:0 1 4.4G 0 rom /mnt
[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv7 vg7 -wi-ao---- <2.00glv8 vg7 -wi-a----- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
[root@web ~]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 21M 466M 5% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 16G 1.8G 90% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
tmpfs 98M 0 98M 0% /run/user/0
/dev/mapper/vg7-lv7 2.0G 6.0M 1.9G 1% /u7
[root@web ~]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv7 vg7 -wi-ao---- <2.00glv8 vg7 -wi-a----- 1.00glv_mysql vg_mysql -wi-ao---- 8.00g
[root@web ~]# vgsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.VG #PV #LV #SN Attr VSize VFreecentos 1 2 0 wz--n- <19.00g 0vg01 4 3 0 wz--n- 3.98g 764.00mvg1 2 1 0 wz--n- 3.99g 2.99gvg2 2 0 0 wz-pn- 3.99g 3.99gvg7 2 2 0 wz--n- 3.99g 1020.00mvg_mysql 5 1 0 wz--n- <8.86g 880.00m
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[root@web ~]# lvdisplay /dev/vg7/lv7--- Logical volume ---LV Path /dev/vg7/lv7LV Name lv7VG Name vg7LV UUID 3fRcmT-SVql-wET3-8my5-JWGw-pe32-4Yb8N4LV Write Access read/writeLV Creation host, time web.cn, 2025-07-20 20:08:33 +0800LV Status available# open 1LV Size <2.00 GiBCurrent LE 511Segments 1Allocation inheritRead ahead sectors auto- currently set to 8192Block device 253:7您在 /var/spool/mail/root 中有邮件
[root@web ~]# lvdisplay /dev/vg7/lv7|grep "LV size"
[root@web ~]# vgsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.VG #PV #LV #SN Attr VSize VFreecentos 1 2 0 wz--n- <19.00g 0vg01 4 3 0 wz--n- 3.98g 764.00mvg1 2 1 0 wz--n- 3.99g 2.99gvg2 2 0 0 wz-pn- 3.99g 3.99gvg7 2 2 0 wz--n- 3.99g 1020.00mvg_mysql 5 1 0 wz--n- <8.86g 880.00m
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[root@web ~]# lvdisplay /dev/vg7/lv8]Failed to find logical volume "vg7/lv8]"
[root@web ~]# lvdisplay /dev/vg7/lv8
\ --- Logical volume ---LV Path /dev/vg7/lv8LV Name lv8VG Name vg7LV UUID cRYQDm-1n3E-MOZJ-F3h0-e0DX-8o56-EhObvDLV Write Access read/writeLV Creation host, time web.cn, 2025-07-20 20:16:38 +0800LV Status available# open 0LV Size 1.00 GiBCurrent LE 256Segments 1Allocation inheritRead ahead sectors auto- currently set to 8192Block device 253:8[root@web ~]# lvextend /dev/vg7/lv8 -L 1.2GRounding size to boundary between physical extents: 1.20 GiB.Size of logical volume vg7/lv8 changed from 1.00 GiB (256 extents) to 1.20 GiB (308 extents).Logical volume vg7/lv8 successfully resized.
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[root@web ~]# lvdisplay /dev/vg7/lv8--- Logical volume ---LV Path /dev/vg7/lv8LV Name lv8VG Name vg7LV UUID cRYQDm-1n3E-MOZJ-F3h0-e0DX-8o56-EhObvDLV Write Access read/writeLV Creation host, time web.cn, 2025-07-20 20:16:38 +0800LV Status available# open 0LV Size 1.20 GiBCurrent LE 308Segments 1Allocation inheritRead ahead sectors auto- currently set to 8192Block device 253:8[root@web ~]# vgsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.VG #PV #LV #SN Attr VSize VFreecentos 1 2 0 wz--n- <19.00g 0vg01 4 3 0 wz--n- 3.98g 764.00mvg1 2 1 0 wz--n- 3.99g 2.99gvg2 2 0 0 wz-pn- 3.99g 3.99gvg7 2 2 0 wz--n- 3.99g 812.00mvg_mysql 5 1 0 wz--n- <8.86g 880.00m
[root@web ~]# lvextend -L +0.1G /dev/vg7/lv7Rounding size to boundary between physical extents: 104.00 MiB.Size of logical volume vg7/lv7 changed from <2.00 GiB (511 extents) to <2.10 GiB (537 extents).Logical volume vg7/lv7 successfully resized.
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[root@web ~]# lvdisplay /dev/vg7/lv7--- Logical volume ---LV Path /dev/vg7/lv7LV Name lv7VG Name vg7LV UUID 3fRcmT-SVql-wET3-8my5-JWGw-pe32-4Yb8N4LV Write Access read/writeLV Creation host, time web.cn, 2025-07-20 20:08:33 +0800LV Status available# open 1LV Size <2.10 GiBCurrent LE 537Segments 2Allocation inheritRead ahead sectors auto- currently set to 8192Block device 253:7[root@web ~]# systemctl status apache
Unit apache.service could not be found.
[root@web ~]# service apache start
Redirecting to /bin/systemctl start apache.service
Failed to start apache.service: Unit not found.
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[root@web ~]# service mysql start
Starting MySQL... SUCCESS!
[root@web ~]# cd /usr/local/apache2/
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[root@web apache2]# bin/ap
apachectl apxs
[root@web apache2]# bin/apachectl \
> ^C
[root@web apache2]# bin/apachectl
[root@web apache2]# bin/apachectl -k start
httpd (pid 101105) already running
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[root@web apache2]# service apache stop
Redirecting to /bin/systemctl stop apache.service
Failed to stop apache.service: Unit apache.service not loaded.
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[root@web apache2]# netstat -naltp| grep 80
tcp6 0 0 :::80 :::* LISTEN 101105/httpd
tcp6 0 0 192.168.235.20:80 192.168.235.1:51851 TIME_WAIT -
[root@web apache2]# bin/apachectl -k stop
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[root@web apache2]# service mysql stop
Shutting down MySQL.. SUCCESS!
[root@web apache2]# ll /usr/local/mysql
总用量 92
drwxr-xr-x 2 mysql mysql 4096 6月 29 21:02 bin
-rw-r--r-- 1 mysql mysql 17987 5月 17 2016 COPYING
drwxr-xr-x 6 mysql mysql 4096 7月 20 21:37 data
drwxr-xr-x 2 mysql mysql 4096 7月 1 21:39 docs
drwxr-xr-x 3 mysql mysql 4096 6月 29 21:02 include
drwxr-xr-x 3 mysql mysql 4096 6月 29 21:02 lib
drwx------ 2 root root 16384 7月 16 20:23 lost+found
drwxr-xr-x 4 mysql mysql 4096 6月 29 21:02 man
-rw-r--r-- 1 mysql mysql 943 6月 29 21:58 my.cnf
-rw-r--r-- 1 mysql mysql 943 7月 16 20:38 my-new.cnf
drwxr-xr-x 10 mysql mysql 4096 6月 29 21:02 mysql-test
-rw-r--r-- 1 mysql mysql 2496 5月 17 2016 README
drwxr-xr-x 2 mysql mysql 4096 6月 29 21:02 scripts
drwxr-xr-x 28 mysql mysql 4096 6月 29 21:02 share
drwxr-xr-x 4 mysql mysql 4096 7月 1 21:39 sql-bench
drwxr-xr-x 2 mysql mysql 4096 6月 29 21:02 support-files
[root@web apache2]# ll /usr/local/mysql/data
总用量 176172
-rw-rw---- 1 mysql mysql 56 6月 29 21:59 auto.cnf
drwx------ 2 mysql mysql 4096 7月 1 23:53 blog
-rw-rw---- 1 mysql mysql 79691776 7月 20 21:37 ibdata1
-rw-rw---- 1 mysql mysql 50331648 7月 20 21:37 ib_logfile0
-rw-rw---- 1 mysql mysql 50331648 6月 29 21:58 ib_logfile1
drwx------ 2 mysql mysql 4096 6月 29 21:58 mysql
drwx------ 2 mysql mysql 4096 7月 16 20:38 performance_schema
drwxr-xr-x 2 mysql mysql 4096 6月 29 21:02 test
-rw-r----- 1 mysql mysql 20968 7月 20 21:37 web.cn.err
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[root@web apache2]# du -sh /usr/local/mysql/data
177M /usr/local/mysql/data
[root@web apache2]# ls /
1.java 35.txt 5.java bin cc.conf date file3.java lib mnt proc root sbin sys u03 u1 usr
2041 3.java app boot code dev home lib64 oo .pcapng rhe16.iso run shop tmp u06 u2 var
2.java 4.java app1 boot.bak data etc java media opt rhome samba srv u01 u07 u7 www
[root@web apache2]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 2.1G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part├─vg7-lv7 253:7 0 2.1G 0 lvm /u7└─vg7-lv8 253:8 0 1.2G 0 lvm
sr0 11:0 1 4.4G 0 rom /mnt
[root@web apache2]# ll /usr/local/mysql
总用量 92
drwxr-xr-x 2 mysql mysql 4096 6月 29 21:02 bin
-rw-r--r-- 1 mysql mysql 17987 5月 17 2016 COPYING
drwxr-xr-x 6 mysql mysql 4096 7月 20 21:37 data
drwxr-xr-x 2 mysql mysql 4096 7月 1 21:39 docs
drwxr-xr-x 3 mysql mysql 4096 6月 29 21:02 include
drwxr-xr-x 3 mysql mysql 4096 6月 29 21:02 lib
drwx------ 2 root root 16384 7月 16 20:23 lost+found
drwxr-xr-x 4 mysql mysql 4096 6月 29 21:02 man
-rw-r--r-- 1 mysql mysql 943 6月 29 21:58 my.cnf
-rw-r--r-- 1 mysql mysql 943 7月 16 20:38 my-new.cnf
drwxr-xr-x 10 mysql mysql 4096 6月 29 21:02 mysql-test
-rw-r--r-- 1 mysql mysql 2496 5月 17 2016 README
drwxr-xr-x 2 mysql mysql 4096 6月 29 21:02 scripts
drwxr-xr-x 28 mysql mysql 4096 6月 29 21:02 share
drwxr-xr-x 4 mysql mysql 4096 7月 1 21:39 sql-bench
drwxr-xr-x 2 mysql mysql 4096 6月 29 21:02 support-files
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[root@web apache2]# ls /u1
lost+found test
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[root@web apache2]# ls /u2
lost+found
[root@web apache2]# ls /u7
lost+found
[root@web apache2]# ls ls /u1
ls: 无法访问ls: 没有那个文件或目录
/u1:
lost+found test
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[root@web apache2]# ls test
ls: 无法访问test: 没有那个文件或目录
[root@web apache2]# cd /u1
[root@web u1]# ls
lost+found test
[root@web u1]# cd test
-bash: cd: test: 不是目录
[root@web u1]# cat test
^C
[root@web u1]# lvsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convertroot centos -wi-ao---- <17.00gswap centos -wi-ao---- 2.00glv01 vg01 -wi-a----- <3.09glv02 vg01 -wi-a----- 120.00mlv03 vg01 -wi-a----- 36.00mlv1 vg1 -wi-ao---- 1.00glv7 vg7 -wi-ao---- <2.10glv8 vg7 -wi-a----- 1.20glv_mysql vg_mysql -wi-ao---- 8.00g
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[root@web u1]# vgsWARNING: Device for PV r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX not found or rejected by a filter.Couldn't find device with uuid r1noGN-Dn5A-udh3-qROp-C2Tj-HSil-AMqIZX.VG #PV #LV #SN Attr VSize VFreecentos 1 2 0 wz--n- <19.00g 0vg01 4 3 0 wz--n- 3.98g 764.00mvg1 2 1 0 wz--n- 3.99g 2.99gvg2 2 0 0 wz-pn- 3.99g 3.99gvg7 2 2 0 wz--n- 3.99g 708.00mvg_mysql 5 1 0 wz--n- <8.86g 880.00m
[root@web u1]# lvdisplay /dev/vg_mysql/lv_mysql--- Logical volume ---LV Path /dev/vg_mysql/lv_mysqlLV Name lv_mysqlVG Name vg_mysqlLV UUID HSyUeg-YzNS-w1Qn-9M4R-sdFG-WIm5-e43E6wLV Write Access read/writeLV Creation host, time web.cn, 2025-07-16 20:21:07 +0800LV Status available# open 1LV Size 8.00 GiBCurrent LE 2048Segments 5Allocation inheritRead ahead sectors auto- currently set to 8192Block device 253:2[root@web u1]# sblk
bash: sblk: 未找到命令...
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[root@web u1]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm /usr/local/mysql
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 2.1G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part├─vg7-lv7 253:7 0 2.1G 0 lvm /u7└─vg7-lv8 253:8 0 1.2G 0 lvm
sr0 11:0 1 4.4G 0 rom /mnt
[root@web u1]# mkdir /u3
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[root@web u1]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 27M 460M 6% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 16G 1.8G 90% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
tmpfs 98M 0 98M 0% /run/user/0
/dev/mapper/vg7-lv7 2.0G 6.0M 1.9G 1% /u7
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[root@web u1]# ll /usr/local/mysql
总用量 92
drwxr-xr-x 2 mysql mysql 4096 6月 29 21:02 bin
-rw-r--r-- 1 mysql mysql 17987 5月 17 2016 COPYING
drwxr-xr-x 6 mysql mysql 4096 7月 20 21:37 data
drwxr-xr-x 2 mysql mysql 4096 7月 1 21:39 docs
drwxr-xr-x 3 mysql mysql 4096 6月 29 21:02 include
drwxr-xr-x 3 mysql mysql 4096 6月 29 21:02 lib
drwx------ 2 root root 16384 7月 16 20:23 lost+found
drwxr-xr-x 4 mysql mysql 4096 6月 29 21:02 man
-rw-r--r-- 1 mysql mysql 943 6月 29 21:58 my.cnf
-rw-r--r-- 1 mysql mysql 943 7月 16 20:38 my-new.cnf
drwxr-xr-x 10 mysql mysql 4096 6月 29 21:02 mysql-test
-rw-r--r-- 1 mysql mysql 2496 5月 17 2016 README
drwxr-xr-x 2 mysql mysql 4096 6月 29 21:02 scripts
drwxr-xr-x 28 mysql mysql 4096 6月 29 21:02 share
drwxr-xr-x 4 mysql mysql 4096 7月 1 21:39 sql-bench
drwxr-xr-x 2 mysql mysql 4096 6月 29 21:02 support-files
[root@web u1]# ll -d /usr/local/mysql
drwxr-xr-x 14 mysql mysql 4096 7月 1 21:42 /usr/local/mysql
[root@web u1]# df -h /usr/local/mysql
文件系统 容量 已用 可用 已用% 挂载点
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
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[root@web u1]# ls /u3
[root@web u1]# rsync -av /usr/local/mysql /u3
sending incremental file list
mysql/
mysql/COPYING
mysql/README
mysql/my-new.cnf
mysql/my.cnf
mysql/bin/
mysql/bin/innochecksum
mysql/bin/msql2mysql
mysql/bin/my_print_defaults
mysql/bin/myisam_ftdump
mysql/bin/myisamchk
mysql/bin/myisamlog
mysql/bin/myisampack
...
mysql/support-files/mysql-log-rotate
mysql/support-files/mysql.server
mysql/support-files/mysqld_multi.serversent 1,196,969,459 bytes received 194,034 bytes 104,101,173.30 bytes/sec
total size is 1,195,957,310 speedup is 1.00
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[root@web u1]# unmount /usr/local/mysql
bash: unmount: 未找到命令...
[root@web u1]# umount /usr/local/mysql
[root@web u1]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 27M 460M 6% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 17G 638M 97% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
tmpfs 98M 0 98M 0% /run/user/0
/dev/mapper/vg7-lv7 2.0G 6.0M 1.9G 1% /u7
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[root@web u1]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 10G 0 disk
├─sdb1 8:17 0 1G 0 part
├─sdb2 8:18 0 1G 0 part /u2
├─sdb3 8:19 0 1G 0 part
├─sdb4 8:20 0 1K 0 part
├─sdb5 8:21 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb6 8:22 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
├─sdb7 8:23 0 1G 0 part
│ ├─vg01-lv01 253:3 0 3.1G 0 lvm
│ ├─vg01-lv02 253:4 0 120M 0 lvm
│ └─vg01-lv03 253:5 0 36M 0 lvm
├─sdb8 8:24 0 1G 0 part
│ └─vg01-lv01 253:3 0 3.1G 0 lvm
└─sdb9 8:25 0 900M 0 part
sdc 8:32 0 10G 0 disk
├─sdc1 8:33 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm
├─sdc2 8:34 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm
├─sdc3 8:35 0 1K 0 part
├─sdc5 8:37 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm
├─sdc6 8:38 0 2G 0 part
│ └─vg_mysql-lv_mysql 253:2 0 8G 0 lvm
└─sdc7 8:39 0 900M 0 part└─vg_mysql-lv_mysql 253:2 0 8G 0 lvm
sdd 8:48 0 20G 0 disk
├─sdd1 8:49 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd2 8:50 0 2G 0 part
│ └─vg1-lv1 253:6 0 1G 0 lvm /u1
├─sdd3 8:51 0 2G 0 part
├─sdd4 8:52 0 512B 0 part
├─sdd5 8:53 0 2G 0 part
├─sdd6 8:54 0 2G 0 part [SWAP]
├─sdd7 8:55 0 2G 0 part
│ └─vg7-lv7 253:7 0 2.1G 0 lvm /u7
└─sdd8 8:56 0 2G 0 part├─vg7-lv7 253:7 0 2.1G 0 lvm /u7└─vg7-lv8 253:8 0 1.2G 0 lvm
sr0 11:0 1 4.4G 0 rom /mnt
[root@web u1]# cd /usr/local/mysql
[root@web mysql]# ls
[root@web mysql]# ls
[root@web mysql]# ls
[root@web mysql]# rsync -av /usr/local/mysql /u3
sending incremental file list
mysql/sent 69 bytes received 20 bytes 178.00 bytes/sec
total size is 0 speedup is 0.00
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[root@web mysql]# mount /dev/vg_mysql/lv_mysql /usr/local/mysql
[root@web mysql]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 470M 0 470M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 27M 460M 6% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 17G 638M 97% /
/dev/sda1 1014M 172M 843M 17% /boot
/dev/sdb2 976M 2.6M 907M 1% /u2
/dev/sr0 4.4G 4.4G 0 100% /mnt
tmpfs 98M 12K 98M 1% /run/user/42
/dev/mapper/vg1-lv1 976M 960M 0 100% /u1
tmpfs 98M 0 98M 0% /run/user/0
/dev/mapper/vg7-lv7 2.0G 6.0M 1.9G 1% /u7
/dev/mapper/vg_mysql-lv_mysql 7.8G 1.2G 6.2G 17% /usr/local/mysql
[root@web mysql]# service mysql start
Starting MySQL. SUCCESS!
[root@web mysql]# ls /u7
lost+found
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[root@web mysql]# ls /u2
lost+found
[root@web mysql]# ls /dev/mapper/vg_mysql-lv_mysql
/dev/mapper/vg_mysql-lv_mysql
[root@web mysql]# cd /dev/mapper/
[root@web mapper]# ls
centos-root centos-swap control vg01-lv01 vg01-lv02 vg01-lv03 vg1-lv1 vg7-lv7 vg7-lv8 vg_mysql-lv_mysql
[root@web mapper]# ll
总用量 0
lrwxrwxrwx 1 root root 7 7月 17 19:32 centos-root -> ../dm-0
lrwxrwxrwx 1 root root 7 7月 17 19:32 centos-swap -> ../dm-1
crw------- 1 root root 10, 236 7月 17 19:32 control
lrwxrwxrwx 1 root root 7 7月 17 19:32 vg01-lv01 -> ../dm-3
lrwxrwxrwx 1 root root 7 7月 17 19:32 vg01-lv02 -> ../dm-4
lrwxrwxrwx 1 root root 7 7月 17 19:32 vg01-lv03 -> ../dm-5
lrwxrwxrwx 1 root root 7 7月 17 19:56 vg1-lv1 -> ../dm-6
lrwxrwxrwx 1 root root 7 7月 20 21:24 vg7-lv7 -> ../dm-7
lrwxrwxrwx 1 root root 7 7月 20 21:22 vg7-lv8 -> ../dm-8
lrwxrwxrwx 1 root root 7 7月 17 19:32 vg_mysql-lv_mysql -> ../dm-2
[root@web mapper]# cat vg_mysql-lv_mysql ▒▒
L▒▒▒▒ ▒▒|h▒▒|h▒▒S▒Ùwh<▒{▒d▒d▒\A+▒l▒a▒/usr/local/mysql4▒▒|ZgF▒▒)K▒-m0@
Ùwh
▒▒▒▒▒!▒[▒▒▒A!f▒▒▒▒▒▒p!
[root@web mapper]# ls
centos-root centos-swap control vg01-lv01 vg01-lv02 vg01-lv03 vg1-lv1 vg7-lv7 vg7-lv8 vg_mysql-lv_mysql
[root@web mapper]# ls vg_mysql-lv_mysql
vg_mysql-lv_mysql
[root@web mapper]# service mysql start
Starting MySQL SUCCESS!
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[root@web mapper]# cd /usr/local/apache2/
[root@web apache2]# service apache2 start
Redirecting to /bin/systemctl start apache2.service
Failed to start apache2.service: Unit not found.
[root@web apache2]# bin/apachectl -k start
[root@web apache2]#
