Re: RAID 6 reshape failed (false message about critical section)

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On Wednesday September 5, ashutosh@xxxxxxxxxxxxxx wrote:
> 
> Please advise me how should I proceed to resolve this situation and  
> save my data if possible (yes, unfortunately I was going to make  
> backups in a week but did not had them yet - too bad for me :-( ).

Hi.
 thanks for the detailed report.

I can see what the problem is.  It will take a little while to figure
out what the "correct" fix it, but a quick fix to get you out of
trouble would be to remove the lines:

		if (info->array.utime > __le64_to_cpu(bsb.mtime) + 3600 ||
		    info->array.utime < __le64_to_cpu(bsb.mtime))
			continue; /* time stamp is too bad */

from Grow.c in mdadm (around line 925).  This change is definitely
safe for your case, and should get the array assembled and the reshape
restarted.  Please let me know how it goes.

NeilBrown
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