Quoting Serge Hallyn (serge.hallyn@canonical.com):
Quoting Serge Hallyn (serge.hallyn@canonical.com):
Quoting Wen Congyang (wency@cn.fujitsu.com):
At 03/22/2012 06:54 AM, Serge Hallyn Wrote:
Hi,
I grabbed today's git head of libvirt. Created a VM (clean install of ubuntu oneiric, installed through virt-manager), and cloned it 3 times. Then I did
serge@ubuntu:~$ for i in `seq 1 4`; do virsh start o$i > /tmp/o$i 2>&1 & done [1] 12184 [2] 12185 [3] 12186 [4] 12187 serge@ubuntu:~$ virsh list error: Failed to list active domains error: End of file while reading data: Input/output error
(Note that most of the time, virsh list actually succeeds, only one of the virsh start's fails)
I cannot reproduce this problem on RHEL6.
At last, found the trigger. I can now reproduce this on uptodate fedora 16, using http://people.canonical.com/~serge/breaklibvirt.sh (run as root from /home/$user). The trigger is the qemu hook. If I don't have a qemu hook, then I can do 100 runs of the parallel starts and lists with no failures. But introduce a slow hook, and the very first run always fails. -serge