Re: RAID6 clean?

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On Monday June 4, linux-raid@xxxxxxxxxxxxxxxx wrote:
> I have a RAID6 array.  1 drive is bad and now un-plugged because the system
> hangs waiting on the disk.
> 
> The system won't boot because / is "not clean".  I booted a rescue CD and
> managed to start my arrays using --force.  I tried to stop and start the
> arrays but they still required --force.  I then used "echo repair >
> sync_action" to make the arrays "clean".  I can now stop and start the RAID6
> array without --force.  I can now boot normally with 1 missing disk.
> 
> Is there an easier method?  Some sort of boot option?  This was a real pain
> in the @$$.
> 
> It would be nice if there was an array option to allow an "un-clean" array
> to be started.  An option that would be set in the md superblock.

Documentation/md.txt

search for 'clean' - no luck.
search for 'dirty'

|
|So, to boot with a root filesystem of a dirty degraded raid[56], use
|
|   md-mod.start_dirty_degraded=1
|

NeilBrown

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