----- Original Message ----- > δΊ 2012-4-12 14:54, Ayal Baron ει: > > > > > > ----- Original Message ----- > >> I am using Fedora 16 with default python2.7.2 installed, and found > >> sometimes vdsm hanged at > >> vdsm/storage/misc.py, func execFunc: > >> p = subprocess.Popen(command, close_fds=True, cwd=cwd, > >> stdin=infile, stdout=outfile, > >> stderr=subprocess.PIPE, > >> env=env) > >> > >> Stopped command could be anything, most likely is > >> "Thread-12::DEBUG::2012-04-12 > >> 11:18:08,995::__init__::1241::Storage.Misc.excCmd::(_log) > >> '/usr/bin/sudo -n /sbin/iscsiadm -m session -R' (cwd None)" > >> during vdsm booting up procedure. This happens only when an other > >> thread is started at the same time by calling > >> threading.thread.start(), which I found in clientIF._init(): > >> self._hostStats.start() > >> > >> When it happens , there would be two vdsm showed in ps > >> command,: > >> vdsm 13794 1 0 11:18 ? 00:00:00 /bin/bash -e > >> /usr/share/vdsm/respawn --minlifetime 10 --daemon --masterpid > >> /var/run/vdsm/respawn.pid /usr/share/vdsm/vdsm > >> vdsm 13797 13794 0 11:18 ? 00:00:00 /usr/bin/python > >> /usr/share/vdsm/vdsm > >> vdsm 13837 13797 0 11:18 ? 00:00:00 /usr/bin/python > >> /usr/share/vdsm/vdsm > >> > >> Does anyone could give some idea about it? I made my own > >> testing > >> .py program calling misc.execFunc in one thread, and starting > >> an > >> other thread by start() in main thread, same thing happens > >> with > >> little chance, so I guess it is a bug in python threading and > >> pipe, planning to change vdsm threading class to work around > >> this. > > > > Do you have abrt package installed? > > > yes, and removed all abrt packages testing again, problem still > happens. > [root@oVirtPC xiawenc]# rpm -qa | grep abrt > [root@oVirtPC xiawenc]# > > [root@oVirtPC xiawenc]# rpm -qa | grep vdsm > vdsm-cli-4.9.6-0.68.git19981e1.fc16.noarch > vdsm-4.9.6-0.68.git19981e1.fc16.x86_64 > vdsm-debuginfo-4.9.6-0.68.git19981e1.fc16.x86_64 > vdsm-python-4.9.6-0.68.git19981e1.fc16.noarch > > Adam also metioned abrt package before, what problem it would > trick?
abrt had a bug where in some cases it would read from a socket that was never written to without a timeout so it would hang. The maintainer introduced a patch earlier this week but I'm not sure it's accepted yet. Can you attach vdsm.log? > > >> > >> _______________________________________________ > >> vdsm-devel mailing list > >> vdsm-devel@lists.fedorahosted.org > >> https://fedorahosted.org/mailman/listinfo/vdsm-devel > >> > > > _______________________________________________ vdsm-devel mailing list vdsm-devel@lists.fedorahosted.org https://fedorahosted.org/mailman/listinfo/vdsm-devel
