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513601
2010 Mar 16
1
[CentOS-devel] disk i/o stalls with mptsas since upgrade to centos 5.4
...3 AM, Lennert Buytenhek
<buytenh at wantstofly.org> wrote:
> Hi!
>
> On two different machines, I've been experiencing disk I/O stalls
> after
> upgrading to the CentOS 5.4 kernel. Both machines have an LSI 1068E
> MPT SAS (mptsas) controller connected to a Chenbro CK13601 36-port SAS
> expander, with one machine having 16 1T WD disks hooked up to it, and
> the other having a mix of about 20 WD/Seagate/Samsung/Hitachi 1T and
> 2T
> disks.
>
> When there's a disk I/O stall, all reads and writes to any disk behind
> the SAS controller/expande...