`virsh list` hangs on my server that hosts a bunch of VMs.
This might be due to the Debian upgrade I did on Feb 15, which upgrades
`libvirt` from 2.4.0-1 to 3.0.0-2.
I have tried restarting libvirtd for a few times, without luck.
Attached below are some relevant logs; let me know if you need some more
for debugging.
Thanks for your help!!
root@vm-host:~# uname -a
Linux vm-host 4.6.0-1-amd64 #1 SMP Debian 4.6.4-1 (2016-07-18) x86_64
GNU/Linux
root@vm-host:~# apt-cache policy libvirt-daemon
libvirt-daemon:
Installed: 3.0.0-2
Candidate: 3.0.0-2
Version table:
*** 3.0.0-2 500
500
http://debian.csie.ntu.edu.tw/debian testing/main amd64
Packages
100 /var/lib/dpkg/status
root@vm-host:~# strace -o /tmp/trace -e trace=network,file,poll virsh
list # hangs forever .....
^C
root@vm-host:~# tail -10 /tmp/trace
access("/etc/libvirt/libvirt.conf", F_OK) = 0
open("/etc/libvirt/libvirt.conf", O_RDONLY) = 5
access("/proc/vz", F_OK) = -1 ENOENT (No such file or
directory)
socket(AF_UNIX, SOCK_STREAM, 0) = 5
connect(5, {sa_family=AF_UNIX,
sun_path="/var/run/libvirt/libvirt-sock"}, 110) = 0
getsockname(5, {sa_family=AF_UNIX}, [128->2]) = 0
poll([{fd=5, events=POLLOUT}, {fd=6, events=POLLIN}], 2, -1) = 1
([{fd=5, revents=POLLOUT}])
poll([{fd=5, events=POLLIN}, {fd=6, events=POLLIN}], 2, -1) = ?
ERESTART_RESTARTBLOCK (Interrupted by signal)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
+++ killed by SIGINT +++
root@vm-host:~# lsof /var/run/libvirt/libvirt-sock # hangs too ...
^C
This is weird =) Can you attach to libvirtd using gdb (with installed
debuginfo) and run 't a a bt' to see where the daemon hangs? I think
it's not accepting connections and that's what virsh is waiting for.