RE: Raid-5 freezes with large writes... Continues after a more /proc/mdstat???

I had a very similar problem (posted here:
http://www.spinics.net/lists/raid/msg05320.html).
After trying loads of combinations/configurations, I'm back to SuSE 8.2,
which works flawless.
I don't know what causes the problem, but I would be glad to know... 

Greets
Christoph


-----Original Message-----
From: linux-raid-owner@vger.kernel.org
[mailto:linux-raid-owner@vger.kernel.org] On Behalf Of david@hpcf.upr.edu
Sent: Freitag, 18. Juni 2004 17:53
To: linux-raid@vger.kernel.org
Subject: Re: Raid-5 freezes with large writes... Continues after a more
/proc/mdstat???

I have the same problem.

David

Hej,

I am using Suse 9.1 and have build (finally) my Raid-5 volume using 
the raidtools.

When I write large amounts of data to the array (i.e. 50 GB) in a cp 
or mv operation, it always stops in the middle of the copy. It waits. 
There are no kernel messages, no errors, it just waits.

The strange part is that after I do a "more /proc/mdstat" my cp/mv 
operation continues.

Performance is descent with approx. 20-30MB/s writes and 80MB/s reads.

You can see the rest of my setup in a previous post:
http://marc.theaimsgroup.com/?l=linux-raid&m=108738559332187&w=2

Has anybody seen this before?

Alwin

P.S. I am using two Maxtor 200GB IDE disks and two identical disks but 
with SATA interface. My box is a Dell 400SC and I run Suse 9.1 with 
the default kernel.


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