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[Qemu-devel] When does live migration give up?


From: Alex Bligh
Subject: [Qemu-devel] When does live migration give up?
Date: Wed, 04 Sep 2013 16:24:20 +0100

We have seen a situation when migrating about 50 VMs at once where some
of them fail. I think this is because they are dirtying pages faster than
they can be transmitted.

What algorithm controls when migration fails in this way, and is it
tunable?

I am fully aware one answer to this question is "do not attempt to
migrate 50 busy VMs through a single 1GB/s NIC".

--
Alex Bligh



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