FreeNAS boot usb - The pool is formatted using a legacy on-disk format?

[EvanVanVan]

Edit2: Solved. For those wondering:

Don't upgrade it.

See this thread - https://forums.freenas.org/index.php?threads/psa-do-not-upgrade-your-boot-pools.42355/#post-274580

Is it normal for the USB on which FreeNAS is installed to show that it's formatted using a legacy on-disk format?

The guide section regarding upgrading a ZFS pool, only mentions the actual data pool. I'm not entirely sure how the USB stick itself is formatted, or what the result of running a "zpool upgrade" on it would be.

Any suggestions?

Thanks

edit:

Code:

zpool status
  pool: freenas-boot
state: ONLINE
status: The pool is formatted using a legacy on-disk format.  The pool can
        still be used, but some features are unavailable.
action: Upgrade the pool using 'zpool upgrade'.  Once this is done, the
        pool will no longer be accessible on software that does not support feature
        flags.
  scan: scrub repaired 0 in 0h1m with 0 errors on Sun Feb 28 03:46:56 2016
config:

        NAME        STATE     READ WRITE CKSUM
        freenas-boot  ONLINE       0     0     0
          da8p2     ONLINE       0     0     0

errors: No known data errors

 

[Ericloewe]

or what the result of running a "zpool upgrade" on it would be.

Don't. GRUB 2 doesn't use the "full" version of ZFS and ZFS booting has limitations.

That said, I was under the impression that early in the 9.3 days the boot pool logic was altered to suppress warnings that users might perceive as undesirable, but which are just noise and nothing to worry about.

 

[EvanVanVan]

Cool thanks, yeah I didn't receive a warning. I just did a zpool status to check the status of a scrub on my main pool and noticed that message (via SSH) on the boot drive.

Thanks

 

[EvanVanVan]

I'm going to bump this. Should I do something to clear this message? I've noticed other people don't get this. I'm guessing save my config file and recreate the boot disk from scratch?

Code:

zpool status
  pool: freenas-boot
state: ONLINE
status: The pool is formatted using a legacy on-disk format.  The pool can
        still be used, but some features are unavailable.
action: Upgrade the pool using 'zpool upgrade'.  Once this is done, the
        pool will no longer be accessible on software that does not support feature
        flags.
  scan: scrub repaired 0 in 0h1m with 0 errors on Sun Feb 28 03:46:56 2016
config:

        NAME        STATE     READ WRITE CKSUM
        freenas-boot  ONLINE       0     0     0
          da8p2     ONLINE       0     0     0

errors: No known data errors

 

[gpsguy]

Don't upgrade it.

See this thread - https://forums.freenas.org/index.php?threads/psa-do-not-upgrade-your-boot-pools.42355/#post-274580

 

[EvanVanVan]

Don't upgrade it.

See this thread - https://forums.freenas.org/index.php?threads/psa-do-not-upgrade-your-boot-pools.42355/#post-274580

Ok thanks, I believed the other guy too and wasn't going to upgrade it, I just didn't realize it was a 9.10 "feature" that'll be promptly fixed.