Comment 1 for bug 1381072

Actually the very last released version of libvirt is 1.2.9.

See the link for details: http://libvirt.org/git/?p=libvirt.git;a=summary

According to the LP issue #13334398, https://bugs.launchpad.net/nova/+bug/1334398

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effectively disable libvirt live snapshotting
 ... some text skipped ...
    Effectively turn this off by increasing the
    MIN_LIBVIRT_LIVESNAPSHOT_VERSION to something that doesn't yet
    exist. This can get us back to a working state, then we can decide
    if live snapshotting is something that can be made to actually work
    under load.
------------- End of the quotation ----------

The libvirt 1.3.0 has not released yet and doesn't exist.
And it was done on purpose to disable the "live snapshotting" feature, as I got it.

So the request to upgrade libvirt to ver 1.3.0 was probably a misunderstanding.