We have a Proxmox VM which refuses to be backed up
This happens on both a backup to local storage, as a backup to the Proxmox Backup Server. This led me to assume that the error is on the VM itself and not at the backup locations?
I've checked the Ext4 filesystem by booting into a Gentoo iso and running
Any clues on what to try next?
Code:
INFO: creating Proxmox Backup Server archive 'vm/111/2024-03-18T11:58:57Z'
INFO: issuing guest-agent 'fs-freeze' command
INFO: issuing guest-agent 'fs-thaw' command
INFO: started backup task 'bfc8e56d-b81d-4224-8ebe-0e27e8b8f3f6'
INFO: resuming VM again
INFO: scsi0: dirty-bitmap status: created new
INFO: 0% (296.0 MiB of 30.0 GiB) in 3s, read: 98.7 MiB/s, write: 58.7 MiB/s
INFO: 1% (532.0 MiB of 30.0 GiB) in 6s, read: 78.7 MiB/s, write: 74.7 MiB/s
INFO: 2% (792.0 MiB of 30.0 GiB) in 9s, read: 86.7 MiB/s, write: 58.7 MiB/s
INFO: 3% (1.1 GiB of 30.0 GiB) in 12s, read: 100.0 MiB/s, write: 68.0 MiB/s
INFO: 4% (1.4 GiB of 30.0 GiB) in 15s, read: 105.3 MiB/s, write: 68.0 MiB/s
INFO: 5% (1.7 GiB of 30.0 GiB) in 18s, read: 100.0 MiB/s, write: 62.7 MiB/s
INFO: 6% (1.9 GiB of 30.0 GiB) in 21s, read: 89.3 MiB/s, write: 78.7 MiB/s
INFO: 7% (2.1 GiB of 30.0 GiB) in 24s, read: 61.3 MiB/s, write: 50.7 MiB/s
INFO: 8% (2.4 GiB of 30.0 GiB) in 27s, read: 102.7 MiB/s, write: 60.0 MiB/s
INFO: 9% (2.7 GiB of 30.0 GiB) in 31s, read: 78.0 MiB/s, write: 37.0 MiB/s
INFO: 10% (3.1 GiB of 30.0 GiB) in 35s, read: 89.0 MiB/s, write: 68.0 MiB/s
INFO: 11% (3.3 GiB of 30.0 GiB) in 38s, read: 88.0 MiB/s, write: 69.3 MiB/s
INFO: 12% (3.7 GiB of 30.0 GiB) in 42s, read: 87.0 MiB/s, write: 56.0 MiB/s
INFO: 13% (3.9 GiB of 30.0 GiB) in 45s, read: 97.3 MiB/s, write: 89.3 MiB/s
INFO: 14% (4.3 GiB of 30.0 GiB) in 48s, read: 109.3 MiB/s, write: 76.0 MiB/s
INFO: 15% (4.5 GiB of 30.0 GiB) in 51s, read: 81.3 MiB/s, write: 74.7 MiB/s
INFO: 16% (4.8 GiB of 30.0 GiB) in 54s, read: 106.7 MiB/s, write: 73.3 MiB/s
INFO: 17% (5.2 GiB of 30.0 GiB) in 57s, read: 117.3 MiB/s, write: 50.7 MiB/s
INFO: 18% (5.5 GiB of 30.0 GiB) in 1m, read: 118.7 MiB/s, write: 52.0 MiB/s
INFO: 19% (5.9 GiB of 30.0 GiB) in 1m 3s, read: 129.3 MiB/s, write: 22.7 MiB/s
INFO: 20% (6.2 GiB of 30.0 GiB) in 1m 6s, read: 114.7 MiB/s, write: 65.3 MiB/s
INFO: 21% (6.5 GiB of 30.0 GiB) in 1m 9s, read: 106.7 MiB/s, write: 65.3 MiB/s
INFO: 22% (6.9 GiB of 30.0 GiB) in 1m 12s, read: 108.0 MiB/s, write: 57.3 MiB/s
INFO: 23% (7.2 GiB of 30.0 GiB) in 1m 15s, read: 104.0 MiB/s, write: 68.0 MiB/s
INFO: 24% (7.5 GiB of 30.0 GiB) in 1m 18s, read: 106.7 MiB/s, write: 81.3 MiB/s
INFO: 25% (7.7 GiB of 30.0 GiB) in 1m 21s, read: 73.3 MiB/s, write: 61.3 MiB/s
INFO: 26% (7.8 GiB of 30.0 GiB) in 1m 23s, read: 62.0 MiB/s, write: 52.0 MiB/s
ERROR: job failed with err -121 - Remote I/O error
INFO: aborting backup job
INFO: resuming VM again
ERROR: Backup of VM 111 failed - job failed with err -121 - Remote I/O error
INFO: Failed at 2024-03-18 13:00:22
INFO: Backup job finished with errors
TASK ERROR: job errors
This happens on both a backup to local storage, as a backup to the Proxmox Backup Server. This led me to assume that the error is on the VM itself and not at the backup locations?
I've checked the Ext4 filesystem by booting into a Gentoo iso and running
fsck -fy /dev/sda1
, which corrected a few inodes but after a reboot the error still appears at exactly the same spot.Any clues on what to try next?