Hi Scott,
How big is the test file you're copying? tcp doesn't hang with two
pvfs2-cp on a 40MB, but I should probably try something larger. :-)
The flow timeouts on the server are set to 5 minutes. Are you
waiting that long before seeing those messages in the log?
-sam
On Jan 11, 2007, at 10:41 AM, Scott Atchley wrote:
Hi all,
Here is a little more detail. On the server, after the stall I only
see:
[E 01/11 11:28] job_time_mgr_expire: job time out: cancelling flow
operation, job_id: 362.
[E 01/11 11:28] fp_multiqueue_cancel: flow proto cancel called on
0x8197828
[D 01/11 11:28] fp_multiqueue_cancel: called on already completed
flow; doing nothing.
There are no timeouts in BMI.
On the client, I eventually see:
[E 11:32:21.004481] job_time_mgr_expire: job time out: cancelling
bmi operation, job_id: 41.
[D 11:32:21.004649] PINT_thread_mgr_bmi_cancel: trying to cancel
opid: 42, ptr: 0x810c5ac.
[D 11:32:21.004719] BMI_cancel: cancel id 42
* BMI_mx_cancel RX op_id 42 mxc_state 4 peer state 2
/* This is a recv that is pending (mxc_state 4) and the peer is
READY (peer state 2) */
[2] - segmentation fault (core dumped) pvfs2-cp /scratch/atchley/
test /mnt/pvfs2/test-${I}
[E 11:32:21.993383] job_time_mgr_expire: job time out: cancelling
bmi operation, job_id: 53.
[D 11:32:21.993421] PINT_thread_mgr_bmi_cancel: trying to cancel
opid: 54, ptr: 0x810c5ac.
[D 11:32:21.993439] BMI_cancel: cancel id 54
* BMI_mx_cancel RX op_id 54 mxc_state 4 peer state 2
/* This is a recv that is pending (mxc_state 4) and the peer is
READY (peer state 2) */
[3] + segmentation fault (core dumped) pvfs2-cp /scratch/atchley/
test /mnt/pvfs2/test-${I}
Since the receives are pending (posted, not completed), the cancel
should succeed. It is probably a bug in my code that causes the
segfaults. Unfortunately, the core files are not usable:
% gdb pvfs2-cp core.28788
"core.28788" is not a core dump: File format not recognized
File disagrees:
% file core.28788
core.28788: ELF 32-bit LSB core file Intel 80386, version 1 (SYSV),
SVR4-style, SVR4-style, from 'pvfs2-cp'
If the other BMI methods do not hang, then I need to keep digging.
Scott
On Jan 11, 2007, at 11:23 AM, Scott Atchley wrote:
Hi all,
I am simply running two pvfs2-cp processes at the same time to see
how everything works. For some reason, the copies start but do not
finish. Eventually, I see timeouts in BMI but not in bmi_mx.
Before I spend too much time on this, can other methods run two
copies at the same time?
$ for I in 1 2 ; do
pvfs2-cp test /mnt/pvfs2/test-${I} &
done
Thanks,
Scott
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