Re: Software RAID when it works and when it doesn't

[Bill Davidsen <davidsen@tmr.com>]

Alberto Alonso wrote:
> On Fri, 2007-10-26 at 18:12 +0200, Goswin von Brederlow wrote:
>
>   
>> Depending on the hardware you can still access a different disk while
>> another one is reseting. But since there is no timeout in md it won't
>> try to use any other disk while one is stuck.
>>
>> That is exactly what I miss.
>>
>> MfG
>>         Goswin
>> -
>>     
>
> That is exactly what I've been talking about. Can md implement
> timeouts and not just leave it to the drivers?
>
> I can't believe it but last night another array hit the dust when
> 1 of the 12 drives went bad. This year is just a nightmare for
> me. It brought all the network down until I was able to mark it
> failed and reboot to remove it from the array.
>   

I'm not sure what kind of drives and drivers you use, but I certainly 
have drives go bad and they get marked as failed. Both on old PATA 
drives and newer SATA. All the SCSI I currently use is on IBM hardware 
RAID (ServeRAID), so I can only assume that failure would be noted.

-- 
bill davidsen <davidsen@tmr.com>
  CTO TMR Associates, Inc
  Doing interesting things with small computers since 1979