Borked MD RAID...

[Eitan Tsur]

Not in /etc/mdadm.conf...  Where else could it be defined?

On Tue, Dec 2, 2008 at 3:53 PM, Lonni J Friedman <netllama at gmail.com> wrote:

> Are you sure that you don't have a spare designated somewhere?
>
> On Tue, Dec 2, 2008 at 2:32 PM, Eitan Tsur <eitan.tsur at gmail.com> wrote:
> > 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
>
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