[PVE-User] lvremove failed - trying again in XX seconds

[Laurent CARON]

Hi,

I'm sorry to heavily insist but I believe there is a bug (or maybe a
misunderstanding on my side) with vzdump/snapshots/lvm backups on 1.9.

I'm constantly getting "lvremove failed" while using snapshot backups.

My setup:
4 proxmox boxes (1.9):

# pveversion --verbose
pve-manager: 2.0-28 (pve-manager/2.0/30bb4d33)
running kernel: 2.6.32-7-pve
proxmox-ve-2.6.32: 2.0-60
pve-kernel-2.6.32-6-pve: 2.6.32-55
pve-kernel-2.6.32-7-pve: 2.6.32-60
lvm2: 2.02.88-2pve1
clvm: 2.02.88-2pve1
corosync-pve: 1.4.1-1
openais-pve: 1.1.4-1
libqb: 0.10.1-2
redhat-cluster-pve: 3.1.8-3
resource-agents-pve: 3.9.2-3
fence-agents-pve: 3.1.7-1
pve-cluster: 1.0-22
qemu-server: 2.0-17
pve-firmware: 1.0-15
libpve-common-perl: 1.0-14
libpve-access-control: 1.0-11
libpve-storage-perl: 2.0-11
vncterm: 1.0-2
vzctl: 3.0.30-2pve1
vzprocps: 2.0.11-2
vzquota: 3.0.12-3
pve-qemu-kvm: 1.0-3
ksm-control-daemon: 1.1-1

root FS is on softraid. This is *only* the root FS.
# cat /proc/mdstat
md0 : active raid1 sda1[0] sdb1[1]
      31254336 blocks [2/2] [UU]
      bitmap: 1/1 pages [4KB], 65536KB chunk

# mount | grep pve
/dev/fuse on /etc/pve type fuse (rw,nosuid,nodev,default_permissions,allow_other)
filer-002:/mnt/vg_md2/backups_proxmox/export on /mnt/pve/backups_tmm type nfs (rw,vers=3,addr=192.168.0.64)

# cat 701.conf
boot: dcn
bootdisk: ide0
cores: 1
ide0: LUN_lcaron:vm-701-disk-1
ide2: local:iso/grml64_2011.05.iso,media=cdrom
memory: 2048
name: vm-lc
net0: e1000=12:C1:3B:28:55:3B,bridge=vmbr0
ostype: l26
sockets: 1

# lvdisplay
  --- Logical volume ---
  LV Name                /dev/VG_FAS-2040-SIEGE-LCARON/vm-701-disk-1
  VG Name                VG_FAS-2040-SIEGE-LCARON
  LV UUID                XjqsmN-MGVL-JD5F-79ST-6LvI-YdLn-7otcGw
  LV Write Access        read/write
  LV Status              NOT available
  LV Size                32.00 GiB
  Current LE             8192
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto


# iscsiadm --mode node
10.100.0.10:3260,2002 iqn.1992-08.com.netapp:sn.142254160


# vzdump --mode snapshot --mailto admin-proxmox at lncsa.fr --all 1 --node proxmox-vty-001 --maxfiles 2 --storage backups_tmm
INFO: starting new backup job: vzdump --mailto admin-proxmox at lncsa.fr --mode snapshot --maxfiles 2 --storage backups_tmm --node proxmox-vty-001 --all 1
INFO: Starting Backup of VM 701 (qemu)
INFO: status = running
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO:   Logical volume "vzsnap-proxmox-vty-001-0" created
INFO: creating archive '/mnt/pve/backups_tmm/dump/vzdump-qemu-701-2012_02_24-11_41_25.tar'
INFO: adding '/mnt/pve/backups_tmm/dump/vzdump-qemu-701-2012_02_24-11_41_25.tmp/qemu-server.conf' to archive ('qemu-server.conf')
INFO: adding '/dev/VG_FAS-2040-SIEGE-LCARON/vzsnap-proxmox-vty-001-0' to archive ('vm-disk-ide0.raw')
INFO: Total bytes written: 34359740928 (34.17 MiB/s)
INFO: archive file size: 32.00GB
INFO: delete old backup '/mnt/pve/backups_tmm/dump/vzdump-qemu-701-2012_02_21-12_45_02.tar.lzo'
INFO: lvremove failed - trying again in 8 seconds
INFO: lvremove failed - trying again in 16 seconds
INFO: lvremove failed - trying again in 32 seconds
INFO: Finished Backup of VM 701 (00:16:35)
INFO: Backup job finished successfully

The only way out is then a reboot of the host.

Suspend works well (just the VM is unavailable during backups).

The exact same setup works fine under ProxMox 1.8 (with kernel 2.6.35).

Regards,

Laurent