ZFS v28 array doesn't expand with larger disks in mirror

[Kurt Touet]

Thanks for that info Artem.  I have now set that property,
exported/imported, and rebooted to no avail.  Is this something that
needed to be set ahead of time?

Thanks,
-kurt

On Thu, Jun 30, 2011 at 1:03 AM, Artem Belevich <art at freebsd.org> wrote:
> On Wed, Jun 29, 2011 at 11:29 PM, Kurt Touet <ktouet at gmail.com> wrote:
>> I have an admittedly odd zfs v28 array configuration under stable/8 r223484:
>>
>> # zpool status storage
>>  pool: storage
>>  state: ONLINE
>>  scan: resilvered 1.21T in 10h50m with 0 errors on Wed Jun 29 23:21:46 2011
>> config:
>>
>>        NAME        STATE     READ WRITE CKSUM
>>        storage     ONLINE       0     0     0
>>          raidz1-0  ONLINE       0     0     0
>>            ad14    ONLINE       0     0     0
>>            ad6     ONLINE       0     0     0
>>            ad12    ONLINE       0     0     0
>>            ad4     ONLINE       0     0     0
>>          mirror-1  ONLINE       0     0     0
>>            ad20    ONLINE       0     0     0
>>            ad18    ONLINE       0     0     0
>>
>> This was simply due to the need to expand the size of the original
>> raidz1 only array and constraints within the box.  All drives in the
>> box _were_ 1.5TB.  I had a drive in the mirror die this week, and I
>> had 2 spare 2TB drives on hand.  So, I decided to replace both of the
>> 1.5TB drives in the array with 2TB drives (and free up a little more
>> space on the box).  However, after replacing both drives, the array
>> did not expand in size.  It still acts as if the mirror contains 1.5TB
>> drives:
>>
>> storage     6.28T   548G
>>  raidz1    5.07T   399G
>>  mirror    1.21T   150G
>>
>> Is this normal behaviour?  It was my understanding that zfs
>> automatically adapted to having additional drive space in vdevs.
>
> You still have to set 'autoexpand' property on the pool in order for
> expansion to happen. Perevious versions would expand the pool on
> re-import or on boot.
>
> --Artem
>
>>
>> -kurt
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