Roman Mamedov wrote:

On Thu, 10 Jun 2010 14:02:42 -0400
Miles Fidelman[off-list ref]  wrote:

   

quoted

2.  Are there any settings that can reduce the likelihood of a RAID
volume being dirty after a crash?  (The crash/reboot isn't that much of
a problem - the several hours of degraded performance ARE a problem.)
     

Do you currently have a write intent bitmap in the array? I think it can
reduce the need for recovery by an order of magnitude in some cases. Check man
mdadm for --bitmap if you don't use it yet.
   

Just went through the process of turning it on for all my arrays.  
Incredibly painless and quick.  Now I get to wait and see if it helps 
the next time I have a crash/reboot event.

Thanks very much!

Miles


-- 
In theory, there is no difference between theory and practice.
In<fnord>  practice, there is.   .... Yogi Berra