Re: RAID6 won't reassemble after disk controller failure

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Mikael Abrahamsson wrote:
> Ok, next thing to recommend would be to get the latest mdadm from Niels
> git repo and try with that one. I know some who have fixed similar
> problems to yours by doing this.
> 
> "git clone git://neil.brown.name/mdadm mdadm" and compile that and see
> if --assemble --force works.
> 

That constitutes a huge step forward.  Was able to assemble the array
with all 12 drives using this binary!  Thanks so much!!!

However, after stopping and re-assembling the array, using the 'stock'
CentOS version, it yields this complaint unless '--force' is also used.
 I'm inclined to believe I should simply fail /dev/sdbt and move on, yes?



[root@dsfs01 ~/mdadm]./mdadm -A /dev/md10
mdadm: ignoring /dev/sdbk as it reports /dev/sdbt as failed
mdadm: ignoring /dev/sdbl as it reports /dev/sdbt as failed
mdadm: ignoring /dev/sdbm as it reports /dev/sdbt as failed
mdadm: /dev/md10 assembled from 9 drives - not enough to start the array.
[root@dsfs01 ~/mdadm]mdadm
[root@dsfs01 ~/mdadm]./mdadm -A --force /dev/md10
mdadm: /dev/md10 has been started with 12 drives.
[root@dsfs01 ~/mdadm]mdadm -S /dev/md10
mdadm: stopped /dev/md10
[root@dsfs01 ~/mdadm]mdadm -A /dev/md10
mdadm: ignoring /dev/sdbk as it reports /dev/sdbt as failed
mdadm: ignoring /dev/sdbl as it reports /dev/sdbt as failed
mdadm: ignoring /dev/sdbm as it reports /dev/sdbt as failed
mdadm: /dev/md10 assembled from 9 drives - not enough to start the array.
[root@dsfs01 ~/mdadm]mdadm -A --force /dev/md10
mdadm: /dev/md10 has been started with 12 drives.

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