Re: Backup from huge Maildirs

On Tue, 18 Sep 2007, Raúl Alexis Betancor Santana wrote:
> If you do that with software raid, it will be slower than a simple raid5,
> thats because you have first to write to the raid1 device and then to the
> raid0 device, two times trought the same io routines ... that does not sounds
> good, at least for me.

Don't stack md devices, you're playing russian roulete. Either use raid10 or use LVM striping over two RAID1.

And yes, this is due to kernel bugs in md. You might have luck and not hit them... or not.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh


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