Re: [libvirt-users] Migration hangs on Gentoo with KVM

On Aug 1, 2011, at 16:33 , Eric Blake wrote: > [re-adding the list] Sorry about that, still not used to mailman lists which don't put the list address in the reply-to field. ;-) >> Thanks for the prompt answer Eric! Yes, nc has a q option: >> >> -q, --hold-timeout=SEC1[:SEC2] Set hold timeout(s) for local [and remote] > > Glad to hear that we found root cause to your problems, then. > >> >> The bug specifically refers to ssh, does that mean that it should work over tcp? > > The problem is that libvirt is trying to start a remote nc session over ssh; but looking at http://libvirt.org/remote.html, it looks like ssh is the only protocol using nc in that manner (so yes, you can probably avoid the issue by using tcp or tls). Meanwhile, I think you can work around it without patching libvirt, by using this as your remote URI: > > qemu+ssh://user@remotehost/system?netcat=/path/to/nc-wrapper > > where nc-wrapper is an executable script installed on remotehost, looking like: > > #!/bin/sh > exec /path/to/real/nc -q0 "$@" Just tried this, but still hangs; will try tcp and report the results. ~Jonathan