[EMAIL PROTECTED] wrote on Mon, 19 Mar 2007 09:44 -0400:
> We have PathScale Infinipath QLE7140 cards using the driver that's
> included with the 2.6.20.x kernels. The machines in question have two
> dual core Opteron 280 processors, SuperMicro H8DCE-HTe mainboards, and
> 4GB of ECC DDR400. I've tried pvfs-2.6.2 w/2.6.20.1 and the latest CVS
> w/2.6.20.3.
>
> When testing with bonnie (not the preferred benchmark, I realize), a
> filesystem mounted over the TCP interface works fine, but when mounted
> over the IB interface the kernel reports a null pointer dereference in
> put_back_slot within one or two test attempts (complete reports below).
> When the openib interface test is able to complete successfully it's up
> to 2.5 times faster than gigabit/TCP, so we're very interested in making
> use of it.
>
> I've attached the pvfs2 fs config file.
>
> The test is run with:
> bonnie -s 8G:1024k -f -n 0
>
> Please let me know if you need any more info...
Have you been able to use, say, pvfs2-cp to put files into PVFS over
IB? That will help us know if it's a kernel problem or an IB
problem, perhaps.
The other interesting thing to know is if you can recofigure PVFS to
use only TCP, then run your bonnie test and get the same error.
-- Pete
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