On Sun, Sep 13, 2009 at 10:08:48PM +, J?hann B. Gu?mundsson wrote:
Virt-manager now supports migration and VM cloning however cloning only
works within a connection though so you can't clone to another machine. It
certainly would be a nice addition if supports storage cloning across
connections.
To support cloning between machines would essentially require the client
app to download the entire storage volume over one connection and upload
it over the second. I don't really much like this as an idea, although
our new data streaming APIs would make it fairly easy to add.
For somes types of pool, virt-manager could in fact do cloning between
machines / connections, without needing API support. eg, if using an
iSCSI pool, a SCSI FibreChannel, a NFS / GFS / GlusterFS pool these
are all shared storage mechanism. virt-manager ought to be able to
work out that pool X on one connection, is the same as pool Y on the
second connection, and thus just do the clone completely within pool X
and just refresh pool Y to see the new volume.If the source pool
is tied to the local machine (eg local disk, LVM, non-network FS),
then it could go via a second networked pool that is shared.
Ultimately I think that if someone has more than a handful of hosts
running virtualization, then it is very likely that they have got
networked/multi-host-accessible storage of some kind which would allow
for cross-connection cloning without this being needed in libvirt API
directly
Regards,
Daniel
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