[OpenIndiana-discuss] zpool feature/upgrade best practices or recommendations

[Tim Mooney via openindiana-discuss]

All-

Based upon my reading of zpool-features(7), it looks like versioned zpool
has been removed in favor of individual feature enablement.

I've been diligent over the years about pkg updates on my hipster
workstation, but I've never actually done anything to update my rpool.
I'm not running a fileserver or sharing storage, just doing mundane
workstation things.  The workstation is currently running on traditional
spinning disks.

What features *should* I enable?  I'm looking for recommendations on the
"no brainers", things that are all benefit, no downside.

Also, is there a good place to read up on each of the features?  I would
rather not have to dig through the open-zfs mail archive to try figure out
what each one does, benefits/downsides, etc.



$ zpool status
  pool: rpool
 state: ONLINE
status: Some supported 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 0 days 15:59:08 with 0 errors on Sun Jun 15 
19:56:08 2025
config:

        NAME          STATE     READ WRITE CKSUM
        rpool         ONLINE       0     0     0
          mirror-0    ONLINE       0     0     0
            c3t0d0s0  ONLINE       0     0     0
            c3t1d0s0  ONLINE       0     0     0

errors: No known data errors



$ zpool get all | egrep 'version|feature'
rpool  version                        -                   default
rpool  feature@async_destroy          enabled             local
rpool  feature@empty_bpobj            active              local
rpool  feature@lz4_compress           active              local
rpool  feature@multi_vdev_crash_dump  disabled            local
rpool  feature@spacemap_histogram     disabled            local
rpool  feature@enabled_txg            disabled            local
rpool  feature@hole_birth             disabled            local
rpool  feature@extensible_dataset     disabled            local
rpool  feature@embedded_data          disabled            local
rpool  feature@bookmarks              disabled            local
rpool  feature@filesystem_limits      disabled            local
rpool  feature@large_blocks           disabled            local
rpool  feature@large_dnode            disabled            local
rpool  feature@sha512                 disabled            local
rpool  feature@skein                  disabled            local
rpool  feature@edonr                  disabled            local
rpool  feature@device_removal         disabled            local
rpool  feature@obsolete_counts        disabled            local
rpool  feature@zpool_checkpoint       disabled            local
rpool  feature@spacemap_v2            disabled            local
rpool  feature@allocation_classes     disabled            local
rpool  feature@resilver_defer         disabled            local
rpool  feature@encryption             disabled            local
rpool  feature@bookmark_v2            disabled            local
rpool  feature@userobj_accounting     disabled            local
rpool  feature@project_quota          disabled            local
rpool  feature@log_spacemap           disabled            local


I'm not sure how lz4_compress or empty_bpobj were set to "active", as I have
no record of doing anything with either.

I appreciate any pointers or recommendations,

Thanks,

Tim
--
Tim Mooney                                             tim.moo...@ndsu.edu
Enterprise Computing & Infrastructure /
Division of Information Technology    /                701-231-1076 (Voice)
North Dakota State University, Fargo, ND 58105-5164

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