Borked MD RAID...

[Eitan Tsur]

Ok, so here's what /proc/mdstat says after a clean reboot:

*Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 sdb1[0] sdc1[1]
      1465143808 blocks level 5, 256k chunk, algorithm 2 [3/2] [UU_]

md_d0 : inactive sdd[2](S)
      732574464 blocks

unused devices: <none>
*
I basically have to do:

>mdadm --stop /dev/md_d0
>mdadm --add /dev/md0 /dev/sdd1
>cat /proc/mdstat*
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 sdd1[3] sdb1[0] sdc1[1]
      1465143808 blocks level 5, 256k chunk, algorithm 2 [3/2] [UU_]
      [>....................]  recovery =  0.4% (3269252/732571904)
finish=153.7min speed=79057K/sec

unused devices: <none>*

Furthermore, the first time I saw this, it was /dev/sdb that had dropped.
Yesterday it was /dev/sdc.  Today it's /dev/sdd.  That's what throws me off
about this whole thing.

Regards,
-Eitan-

On Sun, Nov 30, 2008 at 2:41 PM, Lonni J Friedman <netllama at gmail.com>wrote:

> On Sun, Nov 30, 2008 at 2:38 PM, Eitan Tsur <eitan.tsur at gmail.com> wrote:
> > I just recently installed a 3-disk RAID5 array in a server of mine,
> running
> > FC9. Upon reboot, one of the drives drops out, and is allocated as a
> spare.
> > I suspect there is some sort of issue where DBUS re-arranges the
> > drive-to-device maps between boots, but I am not sure... Just kind of
> > annoying to have to stop and re-add a drive every boot, and wait the
> couple
> > hours for the array to rebuild the 3rd disk. Any thoughts? Anyone else
> > encountered such an issue before? What should I be looking for? I'm new
> to
> > the world of RAID, so any information you can give may be helpful.
>
> What's in /etc/mdadm.conf, /proc/mdstat and dmesg when this fails ?
>
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> L. Friedman                                    netllama at gmail.com
> LlamaLand                       https://netllama.linux-sxs.org
>
> --
> fedora-list mailing list
> fedora-list at redhat.com
> To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
> Guidelines:
> http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/fedora-list/attachments/20081202/b27815a2/attachment-0001.htm>