Removing LVM VG

U

uaudith

New Member
Jul 11, 2023
2
0
1
Recently I saw a buffer io error on /dev/dm-xx error on the terminal in the host.
Running dmsetup info /dev/dm-xx shows that it corresponds to a previous VG
And VGS does not show anything about this volume group.
Next, I tried to remove them by dmsetup remove -f /dev/dm-0 /dev/dm-13
And it gave following error
Bash: 
device-mapper: remove ioctl on raid0_lvmThinPool-raid0_lvmThinPool_tmeta  failed: Device or resource busy
Command failed.

Here is the output of vgs
Bash: 
root@proxmox:~# dmsetup info /dev/dm-0
Name:              raid0_lvmThinPool-raid0_lvmThinPool_tmeta
State:             ACTIVE
Read Ahead:        256
Tables present:    LIVE
Open count:        1
Event number:      0
Major, minor:      253, 0
Number of targets: 1
UUID: LVM-ahnisMfKYiF98Mn0IbpE5nHa5PWsc2dIkeC31S5UmHbvBp13IDSG1nvdnB8xJA1y-tmeta

root@proxmox:~# vgs
  VG                 #PV #LV #SN Attr   VSize    VFree
  pve                  1   3   0 wz--n- <446.57g <16.00g
  raid5_lvmThinPool    1   2   0 wz--n-   17.46t 512.00m
  raid5_lvmThinPool2   1   2   0 wz--n-   17.46t 512.00m

And the output of dmsetup ls
Bash: 
root@proxmox:~# dmsetup ls
pve-data        (253:8)
pve-data_tdata  (253:7)
pve-data_tmeta  (253:6)
pve-root        (253:5)
pve-swap        (253:4)
raid0_lvmThinPool-raid0_lvmThinPool-tpool       (253:13)
raid0_lvmThinPool-raid0_lvmThinPool_tdata       (253:2)
raid0_lvmThinPool-raid0_lvmThinPool_tmeta       (253:0)
raid5_lvmThinPool-raid5_lvmThinPool     (253:10)
raid5_lvmThinPool-raid5_lvmThinPool-tpool       (253:9)
raid5_lvmThinPool-raid5_lvmThinPool_tdata       (253:3)
raid5_lvmThinPool-raid5_lvmThinPool_tmeta       (253:1)
raid5_lvmThinPool-vm--101--disk--0      (253:12)
raid5_lvmThinPool2-raid5_lvmThinPool2   (253:18)
raid5_lvmThinPool2-raid5_lvmThinPool2-tpool     (253:17)
raid5_lvmThinPool2-raid5_lvmThinPool2_tdata     (253:15)
raid5_lvmThinPool2-raid5_lvmThinPool2_tmeta     (253:11)
raid5_lvmThinPool2-vm--100--disk--0     (253:19)

I tried using lsof to find the processes that are using these volumes which might be giving the Device or resource busy error.
so lsof | grep 253,13 failed with following error

Bash: 
lsof: no pwd entry for UID 101000
lsof: no pwd entry for UID 101000
lsof: no pwd entry for UID 101000

The VG that I am trying to remove has previously been assigned to vm101, now that VM is not running. but a different container is running with that id now
 
Have you tried to reboot after editing?

can you give me the out put of lsblk , pvs and lvs
 
Hi Philipp,
I did not try rebooting. Maybe that will solve this. I'll have to wait a few more days to restart though.

Bash: 
root@proxmox:~# lsblk
NAME                                            MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda                                               8:0    0  17.5T  0 disk
├─raid5_lvmThinPool-raid5_lvmThinPool_tmeta     253:1    0  15.8G  0 lvm
│ └─raid5_lvmThinPool-raid5_lvmThinPool-tpool   253:9    0  17.4T  0 lvm
│   ├─raid5_lvmThinPool-raid5_lvmThinPool       253:10   0  17.4T  1 lvm
│   └─raid5_lvmThinPool-vm--101--disk--0        253:12   0     5T  0 lvm
└─raid5_lvmThinPool-raid5_lvmThinPool_tdata     253:3    0  17.4T  0 lvm
  └─raid5_lvmThinPool-raid5_lvmThinPool-tpool   253:9    0  17.4T  0 lvm
    ├─raid5_lvmThinPool-raid5_lvmThinPool       253:10   0  17.4T  1 lvm
    └─raid5_lvmThinPool-vm--101--disk--0        253:12   0     5T  0 lvm
sdb                                               8:16   0 447.1G  0 disk
├─sdb1                                            8:17   0  1007K  0 part
├─sdb2                                            8:18   0   512M  0 part /boot/efi
└─sdb3                                            8:19   0 446.6G  0 part
  ├─pve-swap                                    253:4    0     8G  0 lvm  [SWAP]
  ├─pve-root                                    253:5    0    96G  0 lvm  /
  ├─pve-data_tmeta                              253:6    0   3.3G  0 lvm
  │ └─pve-data                                  253:8    0   320G  0 lvm
  └─pve-data_tdata                              253:7    0   320G  0 lvm
    └─pve-data                                  253:8    0   320G  0 lvm
sdd                                               8:48   0  17.5T  0 disk
├─raid5_lvmThinPool2-raid5_lvmThinPool2_tmeta   253:11   0  15.8G  0 lvm
│ └─raid5_lvmThinPool2-raid5_lvmThinPool2-tpool 253:17   0  17.4T  0 lvm
│   ├─raid5_lvmThinPool2-raid5_lvmThinPool2     253:18   0  17.4T  1 lvm
│   └─raid5_lvmThinPool2-vm--100--disk--0       253:19   0     5T  0 lvm
└─raid5_lvmThinPool2-raid5_lvmThinPool2_tdata   253:15   0  17.4T  0 lvm
  └─raid5_lvmThinPool2-raid5_lvmThinPool2-tpool 253:17   0  17.4T  0 lvm
    ├─raid5_lvmThinPool2-raid5_lvmThinPool2     253:18   0  17.4T  1 lvm
    └─raid5_lvmThinPool2-vm--100--disk--0       253:19   0     5T  0 lvm
raid0_lvmThinPool-raid0_lvmThinPool_tmeta       253:0    0  15.8G  0 lvm
└─raid0_lvmThinPool-raid0_lvmThinPool-tpool     253:13   0  23.3T  0 lvm

Bash: 
root@proxmox:~# pvs
  PV         VG                 Fmt  Attr PSize    PFree
  /dev/sda   raid5_lvmThinPool  lvm2 a--    17.46t 512.00m
  /dev/sdb3  pve                lvm2 a--  <446.57g <16.00g
  /dev/sdd   raid5_lvmThinPool2 lvm2 a--    17.46t 512.00m

Bash: 
root@proxmox:~# lvs
  LV                 VG                 Attr       LSize   Pool               Origin Data%  Meta%  Move Log Cpy%Sync Convert
  data               pve                twi-a-tz-- 320.03g                           0.00   0.52
  root               pve                -wi-ao----  96.00g
  swap               pve                -wi-ao----   8.00g
  raid5_lvmThinPool  raid5_lvmThinPool  twi-aotz--  17.43t                           4.08   1.08
  vm-101-disk-0      raid5_lvmThinPool  Vwi-aotz--   5.00t raid5_lvmThinPool         14.23
  raid5_lvmThinPool2 raid5_lvmThinPool2 twi-aotz--  17.43t                           0.35   0.39
  vm-100-disk-0      raid5_lvmThinPool2 Vwi-aotz--   5.00t raid5_lvmThinPool2        1.24
 
You must log in or register to reply here.
Top Bottom