ZFS RaidZ-2 problems

[Ronald Klop]

On Tue, 30 Oct 2012 17:32:10 +0100, Paul Wootton  
<paul-freebsd at fletchermoorland.co.uk> wrote:

> On 10/30/12 16:10, Ronald Klop wrote:
>> On Tue, 30 Oct 2012 15:37:55 +0100, Paul Wootton  
>> <paul-freebsd at fletchermoorland.co.uk> wrote:
>>
>>> On 10/30/12 12:04, Dennis Glatting wrote:
>>>> I've had this problem too. Here is what I can tell you for my case.  
>>>> ... I replaced the card, the cable, and the disks themselves leaving  
>>>> only one other possibility -- the power supply. The faulting array  
>>>> was on a separate cable from the power supply. I replaced the power  
>>>> supply, going from a 1,000W to 1,300W, and the power cables to the  
>>>> disks. Not a problem since.
>>>
>>> While I can accept that I might have a bad power supply. or cables, my  
>>> main concern is that I have only 1 drive showing as "Unavail" on a  
>>> RAIDZ-2 and the pack is showing "Faulted".
>>> I would have expected that pack to continue working with 2 bad drives,  
>>> and would have failed if I had 3rd one fail
>>>
>>> Paul
>>
>> Isn't your problem something else than a non-working pool with one  
>> broken disk. I guess it still worked before you exported it. Your  
>> actual problem is 'zpool import' does not work for your pool. Maybe  
>> there is more broken than one disk.
>>
>> Why did you export/import to fix anything in stead of replacing the  
>> faulted disk?
>>
>> (I'm not into the code details of ZFS, so can't help you with  
>> everything.)
>>
>> Ronald.
>>
>>
> The pool was marked as faulted before I tried exporting/importing.ZFS  
> should have marked the pool as degraded, so I wondered if I exported and  
> then reimported the pool, ZFS would taste each of the disks and imported  
> the pool in a degraded mode.

Weird. I don't know what is happening. I hope somebody else knows it.

Ronald.