[libvirt-users] Fwd: Does virsh actually work?

[Gary Hook]

On Wed, Sep 3, 2014 at 2:12 PM, Eric Blake <eblake at redhat.com> wrote:

> On 09/03/2014 01:05 PM, Gary Hook wrote:
>
> >
> > root at huey:/tmp# virsh migrate --live --p2p
>
> This command does not default to migrating storage,...
>

Oh, you mean like this?

root at huey:/tmp# virsh migrate --live --p2p --copy-storage-all
e7f75b9b-9ed4-4f7e-aa86-e481ab911d6f qemu+ssh://10.10.11.204/system
--verbose


error: Failed to open file
'/mnt/store01/virt/e7f75b9b-9ed4-4f7e-aa86-e481ab911d6f.qcow2': No such
file or directory

Apologies; I should have used this one in the first place.  Too many
attempts in the command history....

I'm guessing I"m still missing something...


>
>
> > (huey is 10.10.11.203, dewey is 10.10.11.204; DNS works, but I thought to
> > eliminate that as a source of this problem.) As can be seen, the .qcow2
> > files exists on the source system, and does not exist on the target
> system.
>
> ...therefore, this error message is expected if the storage is not
> already present on the destination.
>
> Migration requires either that you have shared storage (both source and
> destination can see THE SAME FILE, and if one side sees the file via
> NFS, then both sides must see the file via NFS [you can't mix local and
> NFS]).  OR, you have to tell migration that you want to migrate storage
> as well as machine state, by adding the --copy-storage-all flag to your
> command line.
>

Understood; perfectly sensible.  See above.


> http://libvirt.org/migration.html should document useful information
> such as this; would you like to submit a patch to help improve that web
> page?  The sources are in libvirt.git under docs/migration.html.in.
>

Yep, read that page (several times). At such point I have anything of
substance to add, absolutely, yes, I very much want to contribute. I am
just starting out building my skills on KVM and libvirt (background is with
PHYP on Power) but fully intend to become conversant with the packages.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/libvirt-users/attachments/20140903/6221f857/attachment.htm>