It probably won't break anything except for backward compatability.

Anything that will mount that pool will need to be at the same
version, or in this case support the same feature flags. Same goes for
anything that you send snapshots to.

On Sun, Apr 19, 2015 at 6:06 PM, Clug <tclug at freakzilla.com> wrote:
> Ubuntu, uh. 14.04 I guess.
>
> My assumption was that ZFS got upgraded lately and has new features now...
> or something.
>
> Like I said, just want to make sure this isn't breaking anything.
>
>
> On Sun, 19 Apr 2015, Linda Kateley wrote:
>
>> what distro are you running?
>>
>> you should just be able to run
>>
>> #zpool upgrade
>>
>> I am really curious as to what is causing this though.. Something is
>> making a call into the pool that the pool doesn't understand. #zpool clear
>> might clear the errors.
>>
>> linda
>>
>> On 4/19/15 5:52 PM, Clug wrote:
>>>
>>> Ok, so I threw a zpool status on my array today (as I do at least once a
>>> week) and got this message:
>>>
>>> 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(5) for details.
>>>
>>> Now sounds to me like I should just do the zpool upgrade thing but I
>>> figured I should check with the ZFS experts (namely Linda) on the list. I'm
>>> sliiightly worried about what software might now not be able to access the
>>> pool - I'd like to assume this means older versions of ZFS, and not anything
>>> else. But I'm not sure. The manpage for zpool-features wasn't very
>>> helpful...
>>>
>>>
>>> _______________________________________________
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>>> tclug-list at mn-linux.org
>>> http://mailman.mn-linux.org/mailman/listinfo/tclug-list
>>
>>
>> _______________________________________________
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>> tclug-list at mn-linux.org
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>>
> _______________________________________________
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> tclug-list at mn-linux.org
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