ZFS snapshot problem

[JoseLuisTorres]

hi all

i have a problem with proxmox 7.3

the ZFS snapshots seem to have a problem as they can't be accessed, it's like it says the snapshot has been taken but not really, in proxmox 7.2 this works correctly.
any ideas please?

thanks

 

[LnxBil]

I don't see anything wrong in the picture. What is it that you want to see here?

 

[JoseLuisTorres]

I don't see anything wrong in the picture. What is it that you want to see here?

hi LnxBil

when you take a snapshot, you can navigate inside it.
specifically in the root of the pool, in this case in /.zfs/snapshot/backup/

As can be seen in the image, it takes the snapshot but it is empty.
this completely undermines the functioning of the snapshot.

thanks

 

[Clete2]

I think the .zfs folder has some sort of bug when mounted to root. Mine behaves this way too.

I promise you that your snapshot refers to 563GB of data just like the screenshot says. I can prove it to you. Do this:

zfs create rpool/testing
zfs send rpool/ROOT/pve-1@backup | zfs receive rpool/testing/pve-1
ls /rpool/testing/pve-1
zfs destroy rpool/testing -r

I did a similar action on mine:




Edit: Found the relevant bug on GitHub: https://github.com/openzfs/zfs/issues/9461

 

[JoseLuisTorres]

hi

I have solved it by downgrading the packages involved

apt-get install libzpool5linux=2.1.5-pve1
apt-get install zfs-zed=2.1.5-pve1
apt-get install libzfs4linux=2.1.5-pve1
apt-get install zfsutils-linux=2.1.5-pve1
apt-get install zfs-initramfs=2.1.5-pve1

I have regenerated the boot, I don't know if it was strictly necessary, but I did it to make sure.
After reboot and it works fine.

thanks

 

[Stoiko Ivanov]

i have a problem with proxmox 7.3

the ZFS snapshots seem to have a problem as they can't be accessed, it's like it says the snapshot has been taken but not really, in proxmox 7.2 this works correctly.
any ideas please?

* could you try to reinstall the latest zfs software (the issue - if it persists should not be in the userspace part of zfs - but in the kernel)
* then create a snapshot - see if it's visible
* in any case - reboot
* check if its visible after a reboot?

I'll try to reproduce the issue here

 

[Stoiko Ivanov]

managed to reproduce the issue - see https://github.com/openzfs/zfs/issues/9461#issuecomment-1376162949

Depending on the feedback from upstream we'll see how to address this in a robust manner

 

[JoseLuisTorres]

hello

no solution here?

in proxmox v7.4-3 the problem continues
thx

 

[GabrieleV]

Same problem: .zfs snapshots are not accessible.