Re: recovery from multiple failures

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On 2012-01-09, NeilBrown <neilb@xxxxxxx> wrote:
>
> --assemble --force certainly should start dirty/degraded array.
> There was a bug a while back where it didn't.  Maybe you should try a newer
> mdadm.

I'll try this next time (if there is one).

> Alternately:
>=20
>    echo 1 > /sys/module/md_mod/parameters/start_dirty_degraded=20
>
>
> and try again.  That is an easy way to set the module parameter after the
> module is loaded.

Worked great, the array is rebuilding now.  xfs_repair has found a small
number of errors, but otherwise the filesystem seems fine (at least for
now; haven't mounted it yet).

--keith



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