So could you make sure you have debug info libvirt packages installed or in case you compile libvirt yourself that you compile with -g (should be there by default) and don't strip binaries.
I am using the rpm packages distributed from the website, which I've installed on my debian box using alien.
Ouch, I wonder if that could be the reason... Could you just compile libvirt yourself? Personally, I wouldn't really trust such transformed package esp. considering the hacky steps you did and described in another email.
I've attached two gdb traces -- one for when a migration is just running, and another where I've also got a blocked 'virsh list' from the command line. It appears there's no difference between them (except in the data counts in the thread actually doing the migration).
I've also attached a trace for the 'virsh' process itself.
Thanks, that was a good idea since according to it virsh is stuck while it tries to authenticate to libvirtd. Could you run this second virsh list with LIBVIRT_DEBUG environment variable set to 1 and attach the debug output? Also please check the virsh is stuck in the same place. Hopefully the log will tell us more. Jirka