--reply=yes just answers yes to the questions "would you like to
overwrite file XXX"
I'm most afraid this is some fuse bug but surely someone would have
reported it elsewhere. The cp is not in state R+ which is weird but even
a kill -9 PID won't get rid of it.
I'll get you a gdb trace asap :-)
Thanks!
-Mic
Raghavendra G wrote:
Hi Mickey,
Is it possible to attach to glusterfs process using gdb, while cp is
hung and get a backtrace?
#ps aux | grep -i glusterfs
# gdb -p <glusterfs-process-id>
and in gdb,
gdb> bt
Also,
It would be helpful, If you can get a backtrace of cp also.
#ps aux | grep -i cp
# gdb -p <cp-process-id>
gdb> bt
Also, I am curious to know what do the --reply option to cp does.
regards,
On Sun, Jun 15, 2008 at 12:12 AM, Mickey Mazarick
<mic@xxxxxxxxxxxxxxxxxx <mailto:mic@xxxxxxxxxxxxxxxxxx>> wrote:
I'm still seeing the problem described below. It only happens over
the ibverbs transport and very infrequently tcp. This is an
intermittent problem, but happens quite frequently over ibverbs.
It will use all the processing power on a single core of the
client machine. I can repeat the command but eventually the
machine will lock with all processors doing a cp or a tar command.
We see it on both kernel 2.6.18 and 2.6.24. <http://2.6.24.> Has
anyone there been able to replicate it?
Thanks!
-Mickey Mazarick
Mickey Mazarick wrote:
Something odd is happening when I run a shell script with cp
commands in it. This happens infrequently but I have to reboot
the system to get my processor back. I'm never taring or
copying more than 50 megs of data.
It either hangs on a command like:
cp --reply=yes /usr/src/linux-${kernver}/.config
/tftpboot/node_root/boot/config-${kernver}
or
tar cf - etc | gzip >
/tftpboot/node_root/drbl_ssi/template_etc.tgz
when I do a top I see:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+
COMMAND
1603 root 20 0 54160 1616 508 R 100 0.0 33:02.72 cp
(100% cpu time)
I'm unable to kill that process in any way, but I can kill the
shell script that spawned it. The CP command is still running.
I see the below errors on the client:
2008-05-11 17:02:32 E [client-protocol.c:1238:client_flush]
system1: : returning EBADFD
2008-05-11 17:02:32 E [afr.c:2623:afr_flush_cbk] afr1:
(path=/scripts/gluster/afrheal.sh child=system1) op_ret=-1
op_errno=77
2008-05-11 17:02:32 W [client-protocol.c:1296:client_close]
system1: no valid fd found, returning
2008-05-11 17:02:32 W [client-protocol.c:1296:client_close]
system-ns1: no valid fd found, returning
My client and server specs are identical to:
http://www.gluster.org/docs/index.php/Simple_High_Availability_Storage_with_GlusterFS_1.3
This happens equally over ib-verbs and tcp transports.
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--
Raghavendra G
A centipede was happy quite, until a toad in fun,
Said, "Prey, which leg comes after which?",
This raised his doubts to such a pitch,
He fell flat into the ditch,
Not knowing how to run.
-Anonymous
--
