[Pvfs2-users] Timeouts while reading from our pvfs2-system client
kschoche at gmail.com
Tue Jun 12 09:33:56 EDT 2012
Hi vlad, this is a new one for me, and issues similar rarely occur under
relatively low loads like 1GB/s in my experience, are you able to reproduce
by using pvfs2-cp /input/file /dev/null and specifying a -b to set block
If this is what I think it is you shouldn't have any associated timeouts
on server side, can you verify?
More info to come once I get into the office.
On Jun 12, 2012 7:52 AM, "vlad" <vlad at cosy.sbg.ac.at> wrote:
> We are evaluating orangefs 2.8.6 with QDR-Infiniband on rocks cluster
> suite 6.0 (based on CentOS 6.x) and I have set up 8 Nodes (doppler14-20 and
> doppler22). Each node is metaserver, storageserver and client.
> Connection is made via ib://doppler18:3335/pvfs2-fs. The file system is
> mounted to /scratchfs via the kernel-inteface (pvfs2.ko). Our kernel
> version is "2.6.32-220.13.1.el6.x86_64"
> We have very impressive transfer rates (with 800-600MB/s) when we dump
> very big files (1TB) on the filesystem (dd if=/dev/zero
> of=/scratchfs/testfile.dump bs=8192K) , but when reading the dump to
> the client-core collapses and our /scratchfs gets inaccessible.
> The use of pvfs2fuse does not improve the situation, since we get a
> socket error (usually after dumping of 1GB of data, sometimes earlier,
> sometimes later ..). The pvfs2fuse-mountpoint gets also inaccessible .
> I've found this in one of our client log files:
> [E 14:22:23.279365] Error: encourage_recv_incoming: mop_id 7f6ce4000950 in
> RTS_DONE message not found.
> [E 14:22:23.292947] [bt] pvfs2-client-core(error+0xca) [0x46f91a]
> [E 14:22:23.292978] [bt] pvfs2-client-core() [0x46ccc4]
> [E 14:22:23.292999] [bt] pvfs2-client-core() [0x46ea65]
> [E 14:22:23.293018] [bt] pvfs2-client-core(BMI_testcontext+0xf3)
> [E 14:22:23.293037] [bt]
> pvfs2-client-core(PINT_thread_mgr_bmi_push+0x159) [0x4608a9]
> [E 14:22:23.293056] [bt] pvfs2-client-core() [0x45c9aa]
> [E 14:22:23.293074] [bt] pvfs2-client-core(job_testcontext+0x12a)
> [E 14:22:23.293092] [bt]
> pvfs2-client-core(PINT_client_state_machine_testsome+0xee) [0x41757e]
> [E 14:22:23.293111] [bt] pvfs2-client-core() [0x412ecd]
> [E 14:22:23.293130] [bt] pvfs2-client-core(main+0x703) [0x413fb3]
> [E 14:22:23.293165] [bt] /lib64/libc.so.6(__libc_start_main+0xfd)
> [E 14:22:23.303725] pvfs2-client-core with pid 29108 exited with value 1
> I have ot found any evidence for this error in the server log files
> though ..
> This is the output of our /etc/pvfs2tab:
> "ib://doppler18:3335/pvfs2-fs /scratchfs pvfs2 defaults,noauto 0 0"
> Please can you help me to stabilize the read access to our files ?
> Greetings from Salzburg/Austria/Europe
> Vlad Popa
> University of Salzburg
> Dept Of Computer Science-HPC Computing
> 5020 Salzburg
> Tel 0043-662-80446313
> mal:vlad at cosy.sbg.ac.at
> Pvfs2-users mailing list
> Pvfs2-users at beowulf-underground.org
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