PVE 8.4.14, cluster of 2 identical nodes + qdevice. Both nodes are single disk with root on ZFS, both boot in UEFI mode.
Code:
zpool status
status: Some supported and requested features are not enabled on the pool.
The pool can still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
the pool may no longer be accessible by software that does not support
the features. See zpool-features(7) for details.
scan: scrub repaired 0B in 00:03:18 with 0 errors on Sun Oct 12 00:27:19 2025- Is it worth it in terms of added functionality to "zpool upgrade"? Or should I rather upgrade to PVE9 first and then do it?
- Do I need to upgrade all nodes in a cluster at the same time (I'm reluctant to do that), or can I upgrade 1 node first and the second a couple of days later, when I see the first one has no issues?