Backup error - zfs error: cannot create snapshot dataset already exists

Thanks! the trace looks a bit like: https://github.com/openzfs/zfs/issues/16324
the zfs-issue was fixed, and the fix was pulled into ZFS 2.2.7 - this should be included in proxmox-kernel version 6.8.12-7 (and the last 6.11 kernel as well)

Could you update to the latest version (6.8.12-7 is available on pve-no-subscription), reboot and see if it fixes the issue?
 
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Well reboot helped, it kinda didnt want to unmount rpool because of this locked dataset, so i had to turn it off and back on. But when it got back up i could remove that vzdump dataset.
 
SoLoR said:
Well reboot helped, it kinda didnt want to unmount rpool because of this locked dataset, so i had to turn it off and back on. But when it got back up i could remove that vzdump dataset.
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I would expect that - hopefully the issue does not reoccur with the fix in zfs - if it does - please report back here with dmesg/journalctl output and pveversion -v

Thanks!
 
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