Re: [libvirt-users] live migration taking forever
On Thu, Jan 22, 2015 at 9:11 PM, Xu (Simon) Chen <xchenum(a)gmail.com> wrote:
Hey folks,
I am running libvirt 1.2.4 and qemu 2.1 on a 3.14.27 kernel. I've found that
live migrating a relatively large VM (16 cores and 64G ram) is taking
forever - close to 15 hours now, and still not done...
With "lsof -i", I can see a connection is established from my source
hypervisor to a target hypervisor, likely for the purpose of copying data.
nettop shows that this connection is constantly sending 50-60MBps traffic.
The VM being migrated has a disk on ceph by using librbd.
I wonder if anyone has seen similar issues, and how I could troubleshoot
further. (I tried but failed to get qemu monitor to work on the VM...)
Thanks.
-Simon
Hi, under certain conditions, like memory-intensive procedures inside
guest, live migration effectively will have no end, and this is
expected behavior. You may want to use --timeout parameter for
fallback interval to non-live migration for example. If your vm is
sitting idle, the observed behavior is most probably a bug.