[ovirt-users] Move a VM between 2 setups

Yaniv Dary ydary at redhat.com
Tue Nov 15 10:47:54 EST 2016


In general ever since 3.5 you don't need a export domain to do this.
It is advised you use import storage domain feature to do the same thing.
You create a new storage domain move VM to it and then remove it and attach
it to the new engine.
This should be much faster than the export domain.

Yaniv Dary
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Red Hat Israel Ltd.
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On Tue, Nov 15, 2016 at 4:04 PM, Robert Story <rstory at tislabs.com> wrote:

> On Mon, 14 Nov 2016 19:42:46 +0000 Daniel wrote:
> BD> An “export domain” is made for just this purpose. Create a NFS
> (version 3) share and make it accessible to the hypervisors for each
> engine. (It should be a dedicated NFS share, not used for anything else.)
> As I recall it should be owned by vdsm:vdsm (36:36). In one of the engines
> (doesn’t matter which), in the web admin page go to Storage and add a new
> NFS based export domain, using the NFS share you created. Once it’s
> activated, test it out; try right-clicking on a VM to “export” it.
> BD>
> BD> Note that there can only be one engine connected to a given export
> domain at any one time. When you’re done testing the export domain on the
> first engine, you need to put it into “maintenance” and ultimately “detach”
> it.
> BD>
> BD> Then go to the other engine, and this time under Storage instead of
> “new domain” click “import domain” and enter the same NFS share
> information. It should recognize that you already have an export domain
> setup under that NFS share.  Attach and activate it, and under Storage /
> <your export domain name>  / VM Import, try importing the VM you had
> previously exported.
>
> What I did in the past was to create a nfs share for each engine in
> subdirectories on the same filesystem (eg /srv/ovirt/export/beta,
> /srv/ovirt/export/production). After exporting from one, log in the the nfs
> machine and move (or cp -al) the exported domain from one to the other.
> It's pretty much instantaneous since it's the same file system. Saves the
> hassle of the disconnect/reconnect.
>
>
> Robert
>
> --
> Senior Software Engineer @ Parsons
>
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>
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