Re: raid issues after power failure

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2006/6/30, Ákos Maróy <darkeye@xxxxxxxxx>:
Francois,

Thank you for the very swift response.

> First, what is your mdadm version ?

# mdadm --version
mdadm - v1.12.0 - 14 June 2005

Rather old, version, isn't it ?
The freshest meat is 2.5.2, and can be grabbed here :
http://www.cse.unsw.edu.au/~neilb/source/mdadm/

It's quite strange that you have such an old mdadm with a 2.6.16 kernel.
That could be a good idea to upgrade...

what I see is that /dev/sdb1 is signaled as faulty (though it was known to
be not fault before the power failure), and that the whole array is dirty
because of the power failure - thus it can't resync.

Yep, this looks like it.
The events difference is quite big : 0.2701790 vs. 0.2607131... Could
it be that the sdb1 was marked faulty a couple of seconds before the
power failure ?


but even if I hot-add /dev/sdb1 after starting the array, it will say that
it's resyncing, but actually nothing will happen (no disk activity
according to vmstat, no CPU load, etc.)


That's strange. Once again, maybe upgrading your mdadm.

If it does not make it, I guess you'll have to re-constuct your array.
That does not necessarily mean you'll loose data, just playing with -C
and miscelaneous stuff, but I'm not good at that games... Neil is,
definitly.

Good luck.
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