In-place upgrade from 4.4-1 to 5.1 (when released) - zfs boot mirror

[flexyz]

Hi

I currently have 4.4-1 booting from a zfs mirror. I want to upgrade to 5.1 when it has been released.

Can I used ZFS snapshots to have a rollback option if the in-place upgrade should fail for any reason?

Do I need to perform anything special in regards to ZFS also being upgraded on 5.1?

Is this the correct process: https://pve.proxmox.com/wiki/Upgrade_from_4.x_to_5.0 -> In-place upgrade

Thanks

 

[wolfgang]

Hi,

I never try it but yes it should work.
But if you need to rollback please do it with a live Linux what support zfs.
It is not good to do it with the Linux which run on this dataset.

 

[flexyz]

alright - this could be a promox installation on a USB stick? - when upgrading to 5.1 will the ZFS pools also be upgraded?

(I will try it on a VM setup first)

 

[wolfgang]

alright - this could be a promox installation on a USB stick? - when upgrading to 5.1 will the ZFS pools also be upgraded?

Yes you have to use debug mode and then cancel the installation, to enter the shell.

(I will try it on a VM setup first)

This is always a good idea.