[Bug 14534] mvsas : repeatably disconnects all disks during RAID6 resync

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https://bugzilla.kernel.org/show_bug.cgi?id=14534


Stonefish <iamthestonefishdammit@hotmail.com> changed:

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--- Comment #11 from Stonefish <iamthestonefishdammit@hotmail.com>  2011-07-04 22:44:11 ---
Greetings all,

I'm receiving a very similar problem to this, and have been doing so ever since
I got three of those same Supermicro AOC-SASLP-MV8 cards six months back.  I'm
currently running just one, but that doesn't help.

I've created a software raid5, and it's usable.  When this error strikes, it
does recover.  IO performance drops to zero for about a minute or three, but it
does come back.  Almost always :)
I've tried several kernels since about 2.6.34, vanilla and gentoo alike. 
Currently on 2.6.39.2.

I was able to write some 140GB of random data to the array yesterday, and it
didn't fail until I started running a kvm instance and writing to the virtual
disk on it.  That kills it every time.
If I don't write large quantities of the data to the array, it remains quite
stable.  I'm able to read at excellent speeds.
The disks are Seagate ST31500341AS

I'll attach a log file.  Is there anything else anyone needs?

Cheers.

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