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

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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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