[Pvfs2-users] NFS trouble

[Sam Lang]

Hi Emmanuel,

What program are running to test that gives you this behavior?

-sam

On Sep 20, 2007, at 6:06 AM, Emmanuel Florac wrote:

>
> Hello,
> I've built a small PVFS2 cluster and it works fine -- mostly...
>
> Here is the basic cluster setup : 2 dual core Xeon machines, 2GB
> RAM, 2 TB disks as server nodes. Running Debian Etch with a custom
> 2.6.20.7 SMP kernel built from kernel.org vanilla source.
> I compiled PVFS 2.6.3, with the 2.6.21 patch applied (it wouldn't
> compile as is).
>
> PVFS2 works just fine, local performance is OK.
> I'd need to share the PVFS2 filesystem thru NFS to some clients.
> Reading just works, however writing constantly fails with this error :
>
> Sep 19 18:36:53 triangle
> kernel: /usr/sarge64/usr/src/pvfs-2.6.3/src/kernel/linux-2.6/file.c
> line 1923: pvfs2_file_aio_write_iovec: not implemented yet (aio with 7
> segments)
>
> Then the file created is either of zero size, or filled with 0x00.
>
> I've tried many configurations : sharing from a PVFS2
> both server and client node, from a PVFS2 client-only node, with
> uniprocessor and smp kernel, forced NFS version 2, no luck.
>
> Writing thru CIFS (Samba), FTP, scp works perfectly.
>
> I tentatively edited the file.c source code by commenting out the test
> that spits the error out. With this modified kernel module, writing
> thru NFS works _most_of_the_time_. It fails apparently randomly from
> time to time while writing big files ( 500MB to 1GB).
>
> Any help would be greatly welcomed....
>
> -- 
> ----------------------------------------
> Emmanuel Florac     |   Intellique
> ----------------------------------------
>
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