[OpenIndiana-discuss] disconnected drives, how to avoid in the future?

[Jason Matthews]

btw as of november there is likely new firmware for your lsi card. you might want to take this opportunity to upgrade. 

j

Sent from Jasons' hand held

On Jan 10, 2012, at 7:13 AM, Maurilio Longo <maurilio.longo at libero.it> wrote:

> Geoff,
> 
> I've hit this problem several times in the past, with OpenSolaris and then
> with OpenIndiana.
> 
> There are, to my knowledge, no available solutions, it is so by design!
> 
> If a disk stops responding the pool waits until after it responds again
> (sometimes pulling it out of its slot and then reinserting the disk causes a
> reset of the link and it starts working again).
> 
> I was not able to assess what happens if I set failmode to continue.
> 
> I think it could be no better since you still cannot write to the pool.
> 
> This is IMHO the biggest problem of ZFS, in that I cannot instruct it to stop
> using a failed device if it has some level of redundancy still available.
> 
> Wait is OK only if an entire vdev stops responding, not if a disk in a vdev
> with redundancy has problems either fatal or transitory.
> 
> Best regards.
> 
> Maurilio.
> 
> 
> PS. Using server grade disks (those with TLER) makes it possibile to overcome
> this problem for transitory errors.
> 
> 
> Geoff Nordli wrote:
> 
>> Part of my concern is why one disk would have completely brought down
>> the system.  I have seen this come up on the list before, but I don't
>> remember any resolutions to fixing it.
>> 
>> Anyone have any clues to try to prevent this from happening in the future?
>> 
>> thanks,
>> 
>> Geoff
>> 
> 
> -- 
> __________
> |  |  | |__| Maurilio Longo
> |_|_|_|____| farmaconsult s.r.l.
> 
> 
> 
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