On Tue, Jun 23, 2009 at 09:39:25PM +0100, Daniel P. Berrange wrote: > On Tue, Jun 23, 2009 at 06:22:34AM -0700, Garry Dolley wrote: > > My system: > > > > Ubuntu Jaunty 9.04 > > > > libvirt 0.6.4 > > kvm 0.8.4 > > qemu 0.10.0 > > > > I'm not sure what triggered this, I was working with several VMs, > > and then found that virsh decided to hang: > > > > garry@kvr02:~$ virsh list > > Connecting to uri: qemu:///system > > <hang> > > > > I have to ^C out of it. > > > > If I 'force-stop' and then 'start' libvirt-bin: > > > > garry@kvr02:~$ sudo /etc/init.d/libvirt-bin force-stop > > * Forcefully stopping libvirt management daemon libvirtd > > ...done. > > garry@kvr02:~$ sudo /etc/init.d/libvirt-bin start > > * Starting libvirt management daemon libvirtd > > ...done. > > > > I can then get something: > > > > garry@kvr02:~$ virsh list > > Connecting to uri: qemu:///system > > Id Name State > > ---------------------------------- > > 1 vm1 running > > 4 s3-lax running > > 14 freebsd-test running > > 19 freebsd-2 running > > <hang> > > > > But it hangs after that 4th one. I must ^C it again. > > > > If I do 'virsh list' again, it'll then show nothing (hangs like it > > does above). > > > > Any suggestions? > > Install the -debug packages for libvirt, and get a trace > of all its threads under GDB, eg > > (gdb) thread apply all backtrace > > > Also, capture traces of the client & server, by setting LIBVIRT_DEBUG=1 > before running each. I solved the problem, but thanks for this info. I'll use it next time. How do I attach gdb to a running process? (I'm a gdb noob) -- Garry Dolley ARP Networks, Inc. | http://www.arpnetworks.com | (818) 206-0181 Data center, VPS, and IP Transit solutions Member Los Angeles County REACT, Unit 336 | WQGK336 Blog http://scie.nti.st -- Libvir-list mailing list Libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list