Linux基础——LVM无法删除问题排查

一、LVM可能被占用

# 查看lvm被占用中
[root@harbor ~]# dmsetup info -c | grep data01
data01-lvdata01                              253   2 L--w    0    1      0 LVM-RjmtKrgddy0ejyeqJhVtr3IRsKkukLJNn6z4gQOC22jXKNgBcv92CN2P1f9AlcDS
[root@harbor ~]# lsblk
NAME                                             MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda                                                8:0    0   40G  0 disk
├─sda1                                             8:1    0    1G  0 part /boot
└─sda2                                             8:2    0   39G  0 part
  ├─bigcloud--enterprise--linux--for--euler-root 253:0    0   35G  0 lvm  /
  └─bigcloud--enterprise--linux--for--euler-swap 253:1    0    4G  0 lvm  [SWAP]
sdb                                                8:16   0    8G  0 disk
└─vg1-test                                       253:3    0   24G  0 lvm  /data02
sdc                                                8:32   0    8G  0 disk
└─vg1-test                                       253:3    0   24G  0 lvm  /data02
sdd                                                8:48   0    8G  0 disk
└─vg1-test                                       253:3    0   24G  0 lvm  /data02
sde                                                8:64   0   20G  0 disk
└─data01-lvdata01                                253:2    0   20G  0 lvm
sr0                                               11:0    1 1024M  0 rom
# 
[root@harbor ~]#  ls -la /sys/dev/block/253:2/
total 0
drwxr-xr-x 9 root root    0 Apr 26 13:52 .
drwxr-xr-x 6 root root    0 Apr 26 13:50 ..
-r--r--r-- 1 root root 4096 Apr 26 13:52 alignment_offset
lrwxrwxrwx 1 root root    0 Apr 26 13:50 bdi -> ../../bdi/253:2
-r--r--r-- 1 root root 4096 Apr 26 13:52 capability
-r--r--r-- 1 root root 4096 Apr 26 13:50 dev
-r--r--r-- 1 root root 4096 Apr 26 13:52 discard_alignment
drwxr-xr-x 2 root root    0 Apr 26 13:50 dm
-r--r--r-- 1 root root 4096 Apr 26 13:52 ext_range
-r--r--r-- 1 root root 4096 Apr 26 13:52 hidden
drwxr-xr-x 2 root root    0 Apr 26 13:50 holders
-r--r--r-- 1 root root 4096 Apr 26 13:52 inflight
drwxr-xr-x 2 root root    0 Apr 26 13:52 integrity
drwxr-xr-x 2 root root    0 Apr 26 13:52 power
drwxr-xr-x 2 root root    0 Apr 26 13:51 queue
-r--r--r-- 1 root root 4096 Apr 26 13:52 range
-r--r--r-- 1 root root 4096 Apr 26 13:51 removable
-r--r--r-- 1 root root 4096 Apr 26 13:51 ro
-r--r--r-- 1 root root 4096 Apr 26 13:51 size
drwxr-xr-x 2 root root    0 Apr 26 13:52 slaves
-r--r--r-- 1 root root 4096 Apr 26 13:52 stat
lrwxrwxrwx 1 root root    0 Apr 26 13:50 subsystem -> ../../../../class/block
drwxr-xr-x 2 root root    0 Apr 26 13:52 trace
-rw-r--r-- 1 root root 4096 Apr 26 13:50 uevent

二、查找LVM占用情况

# 没有LVM映射相关文件
[root@harbor ~]#  ls -la /sys/dev/block/253:2/holders
total 0
drwxr-xr-x 2 root root 0 Apr 26 13:52 .
drwxr-xr-x 9 root root 0 Apr 26 13:52 ..
# lvs卷任然存在
[root@harbor ~]# lvs
  LV       VG                                  Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  root     bigcloud-enterprise-linux-for-euler -wi-ao----  35.04g
  swap     bigcloud-enterprise-linux-for-euler -wi-ao----   3.95g
  lvdata01 data01                              -wi------- <20.00g
  test     vg1                                 -wi-ao---- <23.99g

 

三、删除占用方法

# 尝试删除卷占用映射
[root@harbor ~]# dmsetup remove /dev/data01/lvdata01
# lvm已正常删除
[root@harbor ~]# lsblk
NAME                                             MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda                                                8:0    0   40G  0 disk
├─sda1                                             8:1    0    1G  0 part /boot
└─sda2                                             8:2    0   39G  0 part
  ├─bigcloud--enterprise--linux--for--euler-root 253:0    0   35G  0 lvm  /
  └─bigcloud--enterprise--linux--for--euler-swap 253:1    0    4G  0 lvm  [SWAP]
sdb                                                8:16   0    8G  0 disk
└─vg1-test                                       253:3    0   24G  0 lvm  /data02
sdc                                                8:32   0    8G  0 disk
└─vg1-test                                       253:3    0   24G  0 lvm  /data02
sdd                                                8:48   0    8G  0 disk
└─vg1-test                                       253:3    0   24G  0 lvm  /data02
sde                                                8:64   0   20G  0 disk
sr0                                               11:0    1 1024M  0 rom

 

四、删除LVM卷

[root@harbor ~]# lvremove  /dev/data01/lvdata01
  Logical volume "lvdata01" successfully removed

 

五、参考

https://blog.csdn.net/YH_7059/article/details/109766245