Re: megaraid_sas waiting for command and then offline
From: Alan Cox
Date: Wed Oct 25 2006 - 19:00:41 EST
Ar Mer, 2006-10-25 am 15:48 -0700, ysgrifennodd Brett G. Durrett:
> After I reported an additional failure, Sumant said they were able to
> reproduce the problems with XFS but they have not seen it with EXT3.
I've seen precisely that pattern with a couple of IDE controllers. In
both cases they had problems with very large I/O requests. XFS was
generating extremely long linear reads and writes while ext3 tended to
generate nice I/O patterns but never really huge ones.
(The IDE drivers in question have since been fixed except for IT821x
where some firmware versions in raid mode still barf)
Alan
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