[lustre-discuss] "zpool upgrade -a" command for upgrade from lustre-2.12 to lustre 2.15 needed?

[Cameron Harr]

You can import the 0.7-formatted zpools in zfs 2.1 without upgrading 
them; you just won't get all the benefits (and there are a lot) of 2.1 
until you upgrade. So, you could run for a while with the old format 
until you're comfortable to upgrade them permanently. You can also take 
snapshots and back them up if you have space to do so.

Cameron

On 5/23/24 04:10, Bernd Melchers via lustre-discuss wrote:
> Hi All,
> for the process of update from CentOS-7 / lustre-2.12.9 / zfs-0.7 to
> Alma-8 / lustre-2.15 / zfs-2.1 we would like to know if the zfs pools
> have to be upgraded (with "zpool upgrade -a"). This will make newer zfs
> features available to lustre, but with the disadvantage that there is no
> way back to zfs-0.7 and lustre-2.12. Which zfs level does lustre-2.15
> need?
>
> Mit freundlichen Grüßen
> Bernd Melchers
>