ZFS-8000-8A: assistance needed

Ruslan Makhmatkhanov rm at FreeBSD.org
Thu Sep 8 16:37:01 UTC 2016


Gary Palmer wrote on 09/08/2016 16:24:
> On Thu, Sep 08, 2016 at 03:35:50PM +0300, Ruslan Makhmatkhanov wrote:
>> Gary Palmer wrote on 09/08/2016 15:16:
>>> On Thu, Sep 08, 2016 at 02:46:04PM +0300, Ruslan Makhmatkhanov wrote:
>>>> Maurizio Vairani wrote on 09/08/2016 10:39:
>>>>> Hi Ruslan,
>>>>>
>>>>> Il 06/09/2016 22:00, Ruslan Makhmatkhanov ha scritto:
>>>>>>     NAME              STATE     READ WRITE CKSUM
>>>>>>     storage_ssd       ONLINE       0     0 59.3K
>>>>>>       mirror-0        ONLINE       0     0     0
>>>>>>         gpt/drive-06  ONLINE       0     0     0
>>>>>>         gpt/drive-07  ONLINE       0     0     9
>>>>>>       mirror-1        ONLINE       0     0  119K
>>>>>>         gpt/drive-08  ONLINE       0     0  119K
>>>>>>         gpt/drive-09  ONLINE       0     0  119K
>>>>>>     cache
>>>>>>       mfid5           ONLINE       0     0     0
>>>>>>       mfid6           ONLINE       0     0     0
>>>>>>
>>>
>>>> So, I'm interested how you detect that particular drives (with gpt
>>>> labels drive-07, drive-08 and drive-09) are failing?
>>>
>>> The CKSUM errors from the zpool status output.  They are
>>> indicative of underlying problems.  gpt/drive-07 has a low count
>>> so it's possibly not a major problem, but gpt/drive-08 and
>>> gpt/drive-09 both have a significant number.  I find it a bit
>>> curious that both drives in the mirror have similar number of
>>> errors.  Possibly indicating data pathing errors.
>>
>> Ah, ok, thanks. I wasn't able to find meaning of CKSUM field description
>> in zpool manpage, so didn't got it at the time. Not sure about data
>> pathing errors though.
>
> I mean something in the data path for both drives that is common
> to those two drives and not the others.  If they're all attached to
> the same controller, maybe they're on a different SAS port or cable
> or something to the other drives.
>
> Regards,
>
> Gary

We'll check that. Thank you, Gary!


-- 
Regards,
Ruslan

T.O.S. Of Reality


More information about the freebsd-fs mailing list