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
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