[OmniOS-discuss] Pool degraded

[Alexander Lesle]

Hello Kevin Swab and List,

On April, 08 2014, 20:17 <Kevin Swab> wrote in [1]:

> Instead of a 'zpool remove ...', you want to do a 'zpool detach ...' to
> get rid of the old device.

thats it.
zpool detach ... "removes" the broken device from the pool.

> If you turn the 'autoreplace' property on
> for the pool, the spare will automatically kick in the next time a drive
> fails...

Are you sure? Because the man zpool tell me other:

,-----[ man zpool ]-----
|
| autoreplace=on | off
| 
|          Controls automatic device replacement. If set to  "off",
|          device  replacement must be initiated by the administra-
|          tor by using the "zpool  replace"  command.  If  set  to
|          "on",  any  new device, found in the same physical loca-
|          tion as a device that previously belonged to  the  pool,
|          is  automatically  formatted  and  replaced. The default
|          behavior is "off". This property can also be referred to
|          by its shortened column name, "replace".
|
`-------------------

I understand it that when I pull out a device and put a new device in
the _same_ Case-Slot ZFS make a resilver and ZFS pull out the old one
automatically.
When the property if off I have use the command zpool replace ... ...
what I have done.

But in my case, the spare device was in the Case and _named for_ this
pool
So the 'Hot Spares-Section' tells
,-----[ man zpool ]-----
|
| ZFS allows devices to  be  associated  with  pools  as  "hot
| spares".  These  devices  are not actively used in the pool,
| but  when  an  active  device  fails,  it  is  automatically
| replaced  by  a hot spare.
|
`-------------------

Or I have misunderstood.

> On 04/08/2014 12:13 PM, Alexander Lesle wrote:
>> Hello All,
>> 
>> I have a pool with mirrors and one spare.
>> Now my pool is degraded and I though that Omnios/ZFS activate the
>> spare itself and make a resilvering.
>> 
>> # zpool status -x
>>   pool: pool_ripley
>>  state: DEGRADED
>> status: One or more devices could not be opened.  Sufficient replicas exist for
>>         the pool to continue functioning in a degraded state.
>> action: Attach the missing device and online it using 'zpool online'.
>>    see: http://illumos.org/msg/ZFS-8000-2Q
>>   scan: resilvered 84K in 0h0m with 0 errors on Sun Mar 23 15:09:08 2014
>> config:
>> 
>>         NAME                       STATE     READ WRITE CKSUM
>>         pool_ripley                DEGRADED     0     0     0
>>           mirror-0                 DEGRADED     0     0     0
>>             c1t5000CCA22BC16BC5d0  ONLINE       0     0     0
>>             c1t5000CCA22BEEF6A3d0  UNAVAIL      0     0     0  cannot open
>>           mirror-1                 ONLINE       0     0     0
>>             c1t5000CCA22BC8D31Ad0  ONLINE       0     0     0
>>             c1t5000CCA22BF612C4d0  ONLINE       0     0     0
>>           .
>>           .
>>           .
>> 
>>         spares
>>           c1t5000CCA22BF5B9DEd0    AVAIL
>> 
>> But nothing done.
>> OK, then I do it myself.
>> # zpool replace -f pool_ripley c1t5000CCA22BEEF6A3d0 c1t5000CCA22BF5B9DEd0
>> Resilvering is starting immediately.
>> 
>> # zpool status -x
>>   pool: pool_ripley
>>  state: DEGRADED
>> status: One or more devices could not be opened.  Sufficient replicas exist for
>>         the pool to continue functioning in a degraded state.
>> action: Attach the missing device and online it using 'zpool online'.
>>    see: http://illumos.org/msg/ZFS-8000-2Q
>>   scan: resilvered 1.53T in 3h12m with 0 errors on Sun Apr  6 17:48:51 2014
>> config:
>> 
>>         NAME                         STATE     READ WRITE CKSUM
>>         pool_ripley                  DEGRADED     0     0     0
>>           mirror-0                   DEGRADED     0     0     0
>>             c1t5000CCA22BC16BC5d0    ONLINE       0     0     0
>>             spare-1                  DEGRADED     0     0     0
>>               c1t5000CCA22BEEF6A3d0  UNAVAIL      0     0     0  cannot open
>>               c1t5000CCA22BF5B9DEd0  ONLINE       0     0     0
>>           mirror-1                   ONLINE       0     0     0
>>             c1t5000CCA22BC8D31Ad0    ONLINE       0     0     0
>>             c1t5000CCA22BF612C4d0    ONLINE       0     0     0
>>          .
>>          .
>>          .
>>         spares
>>           c1t5000CCA22BF5B9DEd0      INUSE     currently in use
>> 
>> After resilvering I made power-off, unplugged the broken HDD from
>> Case-slot 1 and switched the Spare from Slot 21 to Slot 1.
>> The pool is still degraded. The broken HDD I cant remove it.
>> 
>> # zpool remove pool_ripley c1t5000CCA22BEEF6A3d0
>> cannot remove c1t5000CCA22BEEF6A3d0: only inactive hot spares,
>> cache, top-level, or log devices can be removed
>> 
>> What can I do to through out the broken HDD and tell ZFS that the
>> spare is now member of mirror-0 and remove it from the spare list?
>> Why does not automatically jump in the Spare device and resilver the
>> pool?
>> 
>> Thanks.
>> 


-- 
Best Regards
Alexander
April, 08 2014
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[1] mid:53443D37.7020307 at ColoState.EDU
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