From: L. Mark Stone (lmstone_at_rnome.com)
Date: Wed Feb 16 2005 - 03:53:49 CET
From: "L. Mark Stone" <lmstone@rnome.com> Date: Tue, 15 Feb 2005 21:53:49 -0500 Message-Id: <200502152153.50082.lmstone@rnome.com> Subject: Re: [suse-sles-e] File systems and SCSI Arrays...
On Tuesday, February 15, 2005 01:28 pm, Anders Norrbring wrote:
> The disk space is located on a Compaq Smart Array 3200 controller.
> The controller takes care of everything regarding RAID, so that part
> doesn't load the Linux system.
> The system loads the driver cpqarray in initrd, everything seems fine
> so far.
>
> The problem is that when the file system gets a load, for example if
> I copy large files to the volume, it takes forever to complete and
> the system seems hanged. After 10-90 seconds, it continues its work.
> If I have one window open with 'top', that too freezes during this
> period.
>
> Since it's SuSE SLES9, I formatted everything with reiserfs, my
> thinking wass that this may be the problem, but then I tried with XFS
> as well, just the same problem.. I'm just guessing.. If someone can
> clear things up, I'd be grateful..
Anders,
I've got a SLES9 box running on an old Compaq 6400r with a SmartArray
3200 controller and I see none of the issues you are having. Reiser
shouldn't make a difference (although I now prefer ext3...)
If your box is a Compaq box, did you SmartStart it before installing
SuSE? (The choice of OS to be installed sets the BIOS up correctly.)
Also, check your boot options in grub and look for the "elevator= "
parameter. If it is set to "as", try changing it to "cfq" or
"deadline" and see what happens after a reboot. (My Compaq has the
parm set to "cfq"; as I understand it, RAID controllers will see poorer
performance if the parm is set to "as".)
Good luck!
Mark
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