Using the packages from the virt-daily-upstream PPA, as suggested in #16, seems to resolve the issue: there are no detectable hangs after a live migration, and the clock offset afterwards is only 0.13s, where it used to be 2.3s for the same amount of uptime.
$ dpkg -l \*qemu\* |awk '/^ii/{print $2 "\t"$3}' ipxe-qemu 1.0.0+git-20131111.c3d1e78-2ubuntu1 qemu 2.0~git-20140609.959e41-0ubuntu1 qemu-keymaps 2.0.0+dfsg-2ubuntu1.1 qemu-system 2.0~git-20140609.959e41-0ubuntu1 qemu-system-arm 2.0~git-20140609.959e41-0ubuntu1 qemu-system-common 2.0~git-20140609.959e41-0ubuntu1 qemu-system-mips 2.0~git-20140609.959e41-0ubuntu1 qemu-system-misc 2.0~git-20140609.959e41-0ubuntu1 qemu-system-ppc 2.0~git-20140609.959e41-0ubuntu1 qemu-system-sparc 2.0~git-20140609.959e41-0ubuntu1 qemu-system-x86 2.0~git-20140609.959e41-0ubuntu1 qemu-user 2.0~git-20140609.959e41-0ubuntu1 qemu-utils 2.0~git-20140609.959e41-0ubuntu1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1297218 Title: guest hangs after live migration due to tsc jump To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/glusterfs/+bug/1297218/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs