Re: failed to read root inode

Eric Sandeen
2010-05-10T01:07:08Z

Stan Hoeppner wrote:
> Emmanuel Florac put forth on 5/9/2010 8:28 AM:
>> Le Sat, 08 May 2010 17:53:17 -0500 vous écriviez:
>>
>>> Why did the "crash" of a single disk in a hardware RAID6 cause a
>>> kernel freeze? What is your definition of "disk crash"? A single
>>> physical disk failure should not have caused this under any
>>> circumstances. The RAID card should have handled a single disk
>>> failure transparently.
>> The RAID array may go west if the disk isn't properly set up,
>> particularly if it's a desktop-class drive.
>
> By design, a RAID6 pack should be able to handle two simultaneous drive
> failures before the array goes offline. According to the OP's post he lost
> one drive. Unless it's a really crappy RAID card or if he's using a bunch
> of dissimilar drives causing problems with the entire array, he shouldn't
> have had a problem.
>
> This is why I'm digging for more information. The information he presented
> here doesn't really make any sense. One physical disk failure _shouldn't_
> have caused the problems he's experiencing. I don't think we got the full
> story.

I tend to agree, something is missing here, which means my suggestions
for repair will be unlikely to be terribly successful; I think more is wrong
than we know...

-Eric