ZFS snapshot problem

Jan 18, 2021
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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
 

Attachments

  • px73.png
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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
 
Last edited:
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:

Code:
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:

Screenshot 2022-12-28 at 2.23.18 PM.png


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

I have solved it by downgrading the packages involved

code_language.shell:
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
 
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
 

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