Right now that backtrace isn't very useful. I think the backtrace on
segfault will print source files and lines if you compile with
debugging. Configure with --enable-strict or build with CFLAGS=-g.
It looks like the segfault might not be directly related to the bmi
ib error that you're getting, but more that we're not correctly
handling the error returned.
-sam
On Apr 4, 2007, at 12:21 PM, Kyle Schochenmaier wrote:
I can reproducibly trigger this error on the server by doing
multiple instances of pvfs2-cp over various IB hardware.
For this one, I did:
pvfs2-cp -t /pvfs2/1node/test2 /dev/null & pvfs2-cp -t /pvfs2/1node/
test2 /dev/null & pvfs2-cp -t /pvfs2/1node/test2 /dev/null & pvfs2-
cp -t /pvfs2/1node/test2 /dev/null & pvfs2-cp -t /pvfs2/1node/
test2 /dev/null & pvfs2-cp -t /pvfs2/1node/test2 /dev/null
That should be 6 of them, everything worked fine up until 6
processes started hammering the server. I can reproduce this with
only 3 processes using faster/lower-latency hardware on the client.
Any ideas where to start tracking this one down?
Kyle
[D 21:25:03.375378] PVFS2 Server version
2.6.2pre1-2007-02-23-150254 starting.
[E 17:00:09.488945] job_time_mgr_expire: job time out: cancelling
flow operation
, job_id: 4608742.
[E 17:00:09.571458] fp_multiqueue_cancel: flow proto cancel called
on 0x60a620
[E 17:00:09.572098] handle_io_error: flow proto error cleanup
started on 0x60a62
0, error_code: -1610612737
[E 17:00:09.573040] handle_io_error: flow proto 0x60a620 canceled 8
operations,
will clean up.
[E 17:00:09.573595] handle_io_error: flow proto 0x60a620 error
cleanup finished,
error_code: -1610612737
[E 17:00:09.573630] Error: memcache_memfree: buf 0x2aaaab272010 len
262144 count
= 2, expected 1.
[E 17:00:09.630067] [bt] /usr/local/sbin/pvfs2-server(error
+0xca) [0x42e40a]
[E 17:00:09.630112] [bt] /usr/local/sbin/pvfs2-server [0x42e72a]
[E 17:00:09.630120] [bt] /usr/local/sbin/pvfs2-server [0x431fa2]
[E 17:00:09.630128] [bt] /usr/local/sbin/pvfs2-server [0x433a69]
[E 17:00:09.630136] [bt] /usr/local/sbin/pvfs2-server [0x43df38]
[E 17:00:09.630143] [bt] /lib/libpthread.so.0 [0x2b3168be0b1c]
[E 17:00:09.630151] [bt] /lib/libc.so.6(__clone+0x72)
[0x2b3168fcd9c2]
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