[Openstack-operators] Reference architecture for medium sized environment

Mike Wilson geekinutah at gmail.com
Tue Aug 20 03:02:29 UTC 2013

Yeah we've played around with it a bit. It works well for the most part. It
does help to have an agent running on your source for migration that tries
to calm down I/O and there may be some tuning of tolerances and timeouts to
be done depending on how your VMs are specd out. Many of our VMs are backed
by LVM storage, so block live migrate is the only "live" migrate that works
well for this sort of thing.


On Mon, Aug 19, 2013 at 7:53 PM, Lorin Hochstein
<lorin at nimbisservices.com>wrote:

> On Sat, Aug 17, 2013 at 12:33 PM, Abel Lopez <alopgeek at gmail.com> wrote:
>> As for 'minimal storage' on your compute nodes, I assume that you're
>> intending to have a shared '/var/lib/nova/instances/' directory, as each vm
>> will need a disk file. This has the added benefit of being a prerequisite
>> for vm migration.
> Has anybody tried to use the block-based live migration that doesn't
> require shared storage?
> Lorin
> --
> Lorin Hochstein
> Lead Architect - Cloud Services
> Nimbis Services, Inc.
> www.nimbisservices.com
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