This is not a bug in libvirt after all. When I fix migration.c to
reetry on -EAGAIN as well as -EINTR when flushing a buffer, the
migration completes. However, the resulting VM on the other end is
corrupt. I can ssh in, but eventually ls of any data not yet in the
buffer cache results in IO error, and eventual crash.
The code which I had to patch has been removed in latest upstream git
HEAD, investigating that...
** Also affects: qemu (Ubuntu)
Importance: Undecided
Status: New
** Changed in: qemu (Ubuntu)
Status: New => Triaged
** Changed in: qemu (Ubuntu)
Importance: Undecided => High
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https://bugs.launchpad.net/bugs/1157626
Title:
Unable to use "virsh migrate" on two hosts after moving to raring
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