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If the guest is modifying memory faster then your network connection
can sync it, the migration will never finish.<br>
<br>
I've worked around this in the past by running 'virsh suspend' on
the source host. This will temporarily stop the guest, and allow
the migration to finish.<br>
<br>
<div class="moz-cite-prefix">On 1/22/2015 1:11 PM, Xu (Simon) Chen
wrote:<br>
</div>
<blockquote
cite="mid:CAGNyuhXOVyftX5xk_F9oU83BhcxsdGxem2b8aExKn1CHuxTeoA@mail.gmail.com"
type="cite">
<div dir="ltr">Hey folks,
<div><br>
</div>
<div>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...</div>
<div><br>
</div>
<div>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.</div>
<div><br>
</div>
<div>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...)</div>
<div><br>
</div>
<div>Thanks.</div>
<div>-Simon</div>
</div>
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