Bug#578352: closed by martin f krafft <madduck at debian.org> (Re: Bug#578352: mdadm: failed devices become spares!)

[martin f krafft]

also sprach Pierre Vignéras <pierre at vigneras.name> [2010.04.20.1317 +0200]:
> Apr 12 20:10:02 phobos mdadm[3157]: Fail event detected on md device /dev/md2, 
> component device /dev/sdf1
> Apr 12 20:11:02 phobos mdadm[3157]: SpareActive event detected on md device 
> /dev/md2, component device /dev/sdf1 
> 
> And at that time I was neither logged in nor did I touch to 
> that NFS server (neither the USB drives, nor the server itself). Actually, 
> I discovered the problem the day after. So the first question is:
> 
> is it normal that after a failure detected on /dev/sdf1 it becomes 
> a spare (again if I understand the syslog message correctly)?

It seems like the drive goes offline and comes back, and then
I think it would be normal. Are there no kernel messages about this?

> what should I do to recover my data? You suggest to remove
> previous one. I don't get how:
> 
> mdadm /dev/md2 --remove ?? (according to /proc/mdstat, /dev/sdf1
> and /dev/sdc1 are now spares).

Try

  mdadm --remove /dev/md2 /dev/sdc1
  mdadm --add /dev/md2 /dev/sdc1
  mdadm --remove /dev/md2 /dev/sdf1
  mdadm --add /dev/md2 /dev/sdf1

and post all the output.

-- 
 .''`.   martin f. krafft <madduck at d.o>      Related projects:
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