[pve-devel] Storage migration: online design solution

[Michael Rasmussen]

On Wed, 09 Jan 2013 03:49:21 +0100 (CET)
Alexandre DERUMIER <aderumier at odiso.com> wrote:

> 
> target can be file or device, (So I think it's for migrate between 2 storages available on same host)
> 
Yes, and this is were NBD comes into play.

> 
> So, if you use ndb server as target, is it for migrate storage between 2 differents host ? (From 1 local storage on 1 host to another local storage on different host by example)
> 
In principle NBD can be running on a remote server or local but I would
guess using NBD for a local device must be slower than writing directly
to the device.
> If yes, I think we need to migrate also the vm on the new host ?
Why do you think that? Late us say a VM has to disk devices on server-x
and server-y. If you then migrate storage from server-x to server-z
where should VM then be running? I have not seen any anything
indicating drive-mirror should be followed by a VM migrate.


-- 
Hilsen/Regards
Michael Rasmussen

Get my public GnuPG keys:
michael <at> rasmussen <dot> cc
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xD3C9A00E
mir <at> datanom <dot> net
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE501F51C
mir <at> miras <dot> org
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE3E80917
--------------------------------------------------------------
Not all men who drink are poets.  Some of us drink because we aren't
poets.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 198 bytes
Desc: not available
URL: <http://lists.proxmox.com/pipermail/pve-devel/attachments/20130109/776b6da2/attachment.sig>