Problem Backups Proxmox 6.1

C

Cortesano

Member
Feb 13, 2020
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Hi, I have performed a new installation Proxmox 6.1 and I have problems with container backups. The Storage backups is NAS NFS, The problem also repeat in hdd local and external. only works when the container is off.

Container off = Backups OK
Container on = Backups Error

Task viewer Backup error
Code: 
INFO: starting new backup job: vzdump 100 --node *******  --mode stop --storage backups --compress lzo --remove 0
INFO: Starting Backup of VM 100 (lxc)
INFO: Backup started at 2020-02-13 11:48:47
INFO: status = running
INFO: backup mode: stop
INFO: ionice priority: 7
INFO: CT Name: dataserver
INFO: stopping vm
INFO: creating archive '/mnt/pve/backups/dump/vzdump-lxc-100-2020_02_13-11_48_47.tar.lzo'
mount: /mnt/vzsnap0: special device /dev/VirtDatos/vm-100-disk-0 does not exist.
umount: /mnt/vzsnap0/: not mounted.
command 'umount -l -d /mnt/vzsnap0/' failed: exit code 32
INFO: restarting vm
INFO: guest is online again after 8 seconds
ERROR: Backup of VM 100 failed - command 'mount /dev/VirtDatos/vm-100-disk-0 /mnt/vzsnap0//' failed: exit code 32
INFO: Failed at 2020-02-13 11:48:56
INFO: Backup job finished with errors
TASK ERROR: job errors

Task viewer Backup OK (Container shutdown)
Code: 
()
INFO: starting new backup job: vzdump 101 --mode stop --node ******* --compress lzo --remove 0 --storage backups
INFO: Starting Backup of VM 101 (lxc)
INFO: Backup started at 2020-02-13 12:14:06
INFO: status = stopped
INFO: backup mode: stop
INFO: ionice priority: 7
INFO: CT Name: netserver
INFO: creating archive '/mnt/pve/backups/dump/vzdump-lxc-101-2020_02_13-12_14_06.tar.lzo'
INFO: Total bytes written: 532234240 (508MiB, 3.8MiB/s)
INFO: archive file size: 246MB
INFO: Finished Backup of VM 101 (00:02:19)
INFO: Backup finished at 2020-02-13 12:16:25
INFO: Backup job finished successfully
TASK OK

pveversion -v
Code: 
proxmox-ve: 6.1-2 (running kernel: 5.3.18-1-pve)
pve-manager: 6.1-7 (running version: 6.1-7/13e58d5e)
pve-kernel-5.3: 6.1-4
pve-kernel-helper: 6.1-4
pve-kernel-5.3.18-1-pve: 5.3.18-1
ceph-fuse: 12.2.11+dfsg1-2.1+b1
corosync: 3.0.3-pve1
criu: 3.11-3
glusterfs-client: 5.5-3
ifupdown: 0.8.35+pve1
ksm-control-daemon: 1.3-1
libjs-extjs: 6.0.1-10
libknet1: 1.14-pve1
libpve-access-control: 6.0-6
libpve-apiclient-perl: 3.0-3
libpve-common-perl: 6.0-12
libpve-guest-common-perl: 3.0-3
libpve-http-server-perl: 3.0-4
libpve-storage-perl: 6.1-4
libqb0: 1.0.5-1
libspice-server1: 0.14.2-4~pve6+1
lvm2: 2.03.02-pve4
lxc-pve: 3.2.1-1
lxcfs: 3.0.3-pve60
novnc-pve: 1.1.0-1
proxmox-mini-journalreader: 1.1-1
proxmox-widget-toolkit: 2.1-3
pve-cluster: 6.1-4
pve-container: 3.0-19
pve-docs: 6.1-4
pve-edk2-firmware: 2.20191127-1
pve-firewall: 4.0-10
pve-firmware: 3.0-5
pve-ha-manager: 3.0-8
pve-i18n: 2.0-4
pve-qemu-kvm: 4.1.1-2
pve-xtermjs: 4.3.0-1
qemu-server: 6.1-5
smartmontools: 7.1-pve2
spiceterm: 3.1-1
vncterm: 1.6-1
zfsutils-linux: 0.8.3-pve1

Any idea?

Thanks
 
Last edited:
hi,

can you post the container configuration as well? (pct config CTID)
 
oguz said:
hi,

can you post the container configuration as well? (pct config CTID)
Click to expand...


# pct config 100
arch: amd64
cores: 1
hostname: dataserver
memory: 2048
net0: name=eth0,bridge=vmbr0,gw=192.168.20.1,hwaddr=2A:9C:BE:E9:B2:F9,ip=192.168.20.11/24,type=veth
ostype: debian
rootfs: vms:vm-100-disk-0,size=600G
swap: 512
 
the two outputs in your first post are from different containers, which doesn't tell us too much about what could be going on.

in either case i suspect it could be storage related

could you please post:

* backup output of container 100 when it's on/off
* same for CT 101
* contents of /etc/pve/storage.conf so we can see what kind of storage you use

thanks
 
oguz said:
the two outputs in your first post are from different containers, which doesn't tell us too much about what could be going on.

in either case i suspect it could be storage related

could you please post:

* backup output of container 100 when it's on/off
* same for CT 101
* contents of /etc/pve/storage.conf so we can see what kind of storage you use

thanks
Click to expand...


Container 100 on
Code: 
INFO: starting new backup job: vzdump 100 --compress lzo --mode stop --remove 0 --node ****** --storage backups
INFO: Starting Backup of VM 100 (lxc)
INFO: Backup started at 2020-02-14 17:01:22
INFO: status = running
INFO: backup mode: stop
INFO: ionice priority: 7
INFO: CT Name: dataserver
INFO: stopping vm
INFO: creating archive '/mnt/pve/backups/dump/vzdump-lxc-100-2020_02_14-17_01_22.tar.lzo'
mount: /mnt/vzsnap0: special device /dev/VirtDatos/vm-100-disk-0 does not exist.
umount: /mnt/vzsnap0/: not mounted.
command 'umount -l -d /mnt/vzsnap0/' failed: exit code 32
INFO: restarting vm
INFO: guest is online again after 4 seconds
ERROR: Backup of VM 100 failed - command 'mount /dev/VirtDatos/vm-100-disk-0 /mnt/vzsnap0//' failed: exit code 32
INFO: Failed at 2020-02-14 17:01:27
INFO: Backup job finished with errors
TASK ERROR: job errors

Container 100 off
Code: 
INFO: starting new backup job: vzdump 100 --storage backups --compress lzo --mode stop --remove 0 --node ******
INFO: Starting Backup of VM 100 (lxc)
INFO: Backup started at 2020-02-14 17:02:25
INFO: status = stopped
INFO: backup mode: stop
INFO: ionice priority: 7
INFO: CT Name: dataserver
INFO: creating archive '/mnt/pve/backups/dump/vzdump-lxc-100-2020_02_14-17_02_25.tar.lzo'
INFO: Total bytes written: 1338193920 (1.3GiB, 44MiB/s)
INFO: archive file size: 676MB
INFO: Finished Backup of VM 100 (00:00:36)
INFO: Backup finished at 2020-02-14 17:03:01
INFO: Backup job finished successfully
TASK OK

Container 101 on
Code: 
INFO: starting new backup job: vzdump 101 --mode stop --storage backups --compress lzo --node ******  --remove 0
INFO: Starting Backup of VM 101 (lxc)
INFO: Backup started at 2020-02-14 17:03:50
INFO: status = running
INFO: backup mode: stop
INFO: ionice priority: 7
INFO: CT Name: netserver
INFO: stopping vm
INFO: creating archive '/mnt/pve/backups/dump/vzdump-lxc-101-2020_02_14-17_03_50.tar.lzo'
mount: /mnt/vzsnap0: special device /dev/VirtDatos/vm-101-disk-0 does not exist.
umount: /mnt/vzsnap0/: not mounted.
command 'umount -l -d /mnt/vzsnap0/' failed: exit code 32
INFO: restarting vm
INFO: guest is online again after 10 seconds
ERROR: Backup of VM 101 failed - command 'mount /dev/VirtDatos/vm-101-disk-0 /mnt/vzsnap0//' failed: exit code 32
INFO: Failed at 2020-02-14 17:04:00
INFO: Backup job finished with errors
TASK ERROR: job errors
Container 101 off
Code: 
INFO: starting new backup job: vzdump 101 --remove 0 --node ******   --compress lzo --storage backups --mode stop
INFO: Starting Backup of VM 101 (lxc)
INFO: Backup started at 2020-02-14 17:04:41
INFO: status = stopped
INFO: backup mode: stop
INFO: ionice priority: 7
INFO: CT Name: netserver
INFO: creating archive '/mnt/pve/backups/dump/vzdump-lxc-101-2020_02_14-17_04_41.tar.lzo'
INFO: Total bytes written: 676403200 (646MiB, 27MiB/s)
INFO: archive file size: 324MB
INFO: Finished Backup of VM 101 (00:00:29)
INFO: Backup finished at 2020-02-14 17:05:10
INFO: Backup job finished successfully
TASK OK

/etc/pve/storage.conf
Code: 
# cat /etc/pve/storage.cfg
lvm: vms
        vgname VirtDatos
        content rootdir,images
        shared 0

dir: local
        path /var/lib/vz
        content snippets,iso,vztmpl,images,rootdir
        maxfiles 0

nfs: backups
        export /volume1/Backups
        path /mnt/pve/backups
        server 192.168.20.9
        content vztmpl,backup,images,rootdir,snippets,iso
        maxfiles 2

dir: Temporal
        disable
        path /mnt/temporal
        content backup
        maxfiles 2
        shared 0

This error ERROR: Backup of VM 100 failed - command 'mount /dev/VirtDatos/vm-100-disk-0 /mnt/vzsnap0//' failed: exit code 32
The command works in bash Ok. (Command.png)

Command.png

Thanks
 
hi,

thanks for the info, i was able to reproduce the issue. i'll take a look and try to come up with a fix
 
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Reactions: Cortesano
although not fixed yet i've narrowed the issue down to LVM devices and 'stop' mode.

can you try using 'suspend' mode while doing a backup? that could serve as a workaround until this is fixed
 
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Reactions: Cortesano
oguz said:
although not fixed yet i've narrowed the issue down to LVM devices and 'stop' mode.

can you try using 'suspend' mode while doing a backup? that could serve as a workaround until this is fixed
Click to expand...

Hi,

The backup in mode "Suspend" work correctly. I will backups temporarily in this mode until to error fix.

Thanks!
 
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