On Tue, Mar 28, 2017 at 09:49:40AM -0500, Eric Blake wrote: > On 03/24/2017 07:34 AM, Kashyap Chamarthy wrote: > > While debugging some other issue, I happened to stumble across an old > > libvirt commit[*] that adds support for pivot (whether QEMU should > > switch to a target copy or not) operation as a result of issuing QMP > > 'block-job-cancel' to a 'drive-mirror' (in libvirt parlance, "block > > copy"). > > > > In the libvirt commit message[*] Eric Blake writes: > > > > "[...] There may be potential improvements to the snapshot code to > > exploit block copy over multiple disks all at one point in time. > > And, if 'block-job-cancel' were made part of 'transaction', you > > could copy multiple disks at the same point in time without pausing > > the domain. [...]" > > > > I realize that 'block-job-cancel' is currently not part of the > > @TransactionAction. Is it worthwhile to do so? > > Yes, it is still worthwhile to make that improvement, although it is > now 2.10 material.
Thanks for looking, didn't imply that it's for 2.9 (which is in Release Candidate phase) -- I realize most people are busy with it. Further discussion could be had when 2.10 tree opens up. [...] -- /kashyap
