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Re: Borked MD RAID...

># mdadm.conf written out by anaconda
>DEVICE partitions
>MAILADDR root localhost
>ARRAY /dev/md0 level=raid5 num-devices=3 spares=1 UUID=0c21bf19:83747f05:70a4872d:90643876

If I switch the "DEVICE partitions" with "DEVICE /dev/sdb1 /dev/sdc1 /dev/sdd1", drives no longer are allocated as spares, however the array still seems to rebuild every boot.

I don't remember the specifics of what was in /proc/mdstat at the time, but currently the array is being rebuilt.  I'll reboot after it is complete to give you a copy of it.  Basically it allocated the dropped drive as a spare which I'd have to mdadm -stop and mdadm -add to the original array after every boot, manually.  Give me an hour or two and I'll get you the output of mdstat.

On Sun, Nov 30, 2008 at 2:41 PM, Lonni J Friedman <netllama gmail com> wrote:
On Sun, Nov 30, 2008 at 2:38 PM, Eitan Tsur <eitan tsur 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 gmail com
LlamaLand                       https://netllama.linux-sxs.org

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