HI, I am using cinder volumes. Ignazio Il giorno gio 4 ago 2022 alle ore 16:56 Gorka Eguileor <geguileo@redhat.com> ha scritto:
On 03/08, Ignazio Cassano wrote:
Hello All, I am looking for a solution to speed up live migration. Instances where ram is used heavily like java application servers, live migration take a long time (more than 20 minutes for 8GB ram instance) and converge mode is already set to True in nova.conf.
Hi,
Probably doesn't affect your case, but I assume you are using ephemeral nova boot volumes.
Have you tried using only Cinder volumes on the VM?
Cheers, Gorka.
I also tried with post_copy but it does not change. After the first live migration (very solow) if I try to migrate again it is very fast. I presume the first migration is slow because memory fragmentation when an instance is running on the same compute node for a long time. I am looking for a solution considering the on my computing node I can have a little ram overcommit. Any case I am increasing the number of compute nodes to reduce it. Thanks Ignazio