<div dir="ltr"><div>HI,</div><div>I am using cinder volumes.</div><div>Ignazio<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Il giorno gio 4 ago 2022 alle ore 16:56 Gorka Eguileor <<a href="mailto:geguileo@redhat.com">geguileo@redhat.com</a>> ha scritto:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On 03/08, Ignazio Cassano wrote:<br>
> Hello All,<br>
> I am looking for a solution to speed up live migration.<br>
> Instances where ram is used heavily like java application servers, live<br>
> migration take a long time (more than 20 minutes for 8GB ram instance) and<br>
> converge mode is already set to True in nova.conf.<br>
<br>
Hi,<br>
<br>
Probably doesn't affect your case, but I assume you are using ephemeral<br>
nova boot volumes.<br>
<br>
Have you tried using only Cinder volumes on the VM?<br>
<br>
Cheers,<br>
Gorka.<br>
<br>
<br>
> I also tried with post_copy but it does not change.<br>
> After the first live migration (very solow) if I try to migrate again it is<br>
> very fast.<br>
> I presume the first migration is slow because memory fragmentation when an<br>
> instance is running on the same compute node for a long time.<br>
> I am looking for a solution considering the on my computing node I can have<br>
> a little ram overcommit. Any case I am increasing the number of compute<br>
> nodes to reduce it.<br>
> Thanks<br>
> Ignazio<br>
<br>
</blockquote></div>