No any chance to backup Container

S

slavon

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Apr 2, 2025
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INFO: Starting Backup of VM 113 (lxc)
INFO: Backup started at 2026-01-03 10:55:07
INFO: status = running
INFO: CT Name: postgresCT
INFO: including mount point rootfs ('/') in backup
INFO: including mount point mp0 ('/var/lib/postgresql') in backup
INFO: mode failure - some volumes do not support snapshots
INFO: trying 'suspend' mode instead
INFO: backup mode: suspend
INFO: ionice priority: 7
INFO: CT Name: postgresCT
INFO: including mount point rootfs ('/') in backup
INFO: including mount point mp0 ('/var/lib/postgresql') in backup
INFO: starting first sync /proc/3334/root/ to /var/tmp/vzdumptmp23355_113
ERROR: rsync: [receiver] write failed on "/var/tmp/vzdumptmp23355_113/var/lib/postgresql/15/main/pg_wal/000000010000001D000000E6": No space left on device (28)
ERROR: rsync error: error in file IO (code 11) at receiver.c(381) [receiver=3.4.1]
ERROR: rsync: [sender] write error: Broken pipe (32)
ERROR: rsync error: error in file IO (code 11) at io.c(849) [sender=3.4.1]
ERROR: Backup of VM 113 failed - command 'rsync --stats -h -X -A --numeric-ids -aH --delete --no-whole-file --sparse --one-file-system --relative '--exclude=/tmp/?*' '--exclude=/var/tmp/?*' '--exclude=/var/run/?*.pid' /proc/3334/root//./ /proc/3334/root//./var/lib/postgresql /var/tmp/vzdumptmp23355_113' failed: exit code 11
INFO: Failed at 2026-01-03 10:59:15
Click to expand...

Why proxmox try backup 700G Container in /var/tmp (50g free space)?!

Backup storage have 10tb+ free space, but backup process try use /var/tmp.

Strange idea!
 
mode failure - some volumes do not support snapshots
Click to expand...
Or you can make this work so it doesn't need temporary storage. Please share this in code blocks (not quotes like above)
Bash: 
cat /etc/pve/storage.cfg
cat /etc/pve/jobs.cfg
pct config 113
lsblk -o+FSTYPE,LABEL,MODEL
Alternatively use stop mode but snapshot support is important and should be fixed if possible.
 
Last edited:
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Impact said:
Or you can make this work so it doesn't need temporary storage. Please share this in code blocks (not quotes like above)
Bash: 
cat /etc/pve/storage.cfg
cat /etc/pve/jobs.cfg
pct config 113
lsblk -o+FSTYPE,LABEL,MODEL
Alternatively use stop mode but snapshot support is important and should be fixed if possible.
Click to expand...
I use NFS 4.x mount (over Infiniband RDMA) to remote nvme disk. VM can do snapshots. Containers can't.
 
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