At Sat, 17 Aug 2013 09:14:44 +0200, Ing. Luca Lazzeroni - Trend Servizi Srl wrote: > > > Il giorno 17/ago/2013, alle ore 03:43, MORITA Kazutaka <morita.kazutaka at gmail.com> ha scritto: > > > At Fri, 16 Aug 2013 17:03:54 +0800, > > Liu Yuan wrote: > >> > >> On Fri, Aug 16, 2013 at 10:48:17AM +0200, Ing. Luca Lazzeroni - Trend Servizi Srl wrote: > >>> Hi, > >>> I'm trying to use external snapshot feature of QEMU/libVirt with sheepdog baked vdi to take VDI live backups without using sheepdog snapshots. > >>> This is to avoid the problem of disk-space unreleased on snapshot deletion. > >> > >> Maybe you can simply use qemu-img sheepdog:image local_iamge to read the image > >> out of cluster? > >> > >> The release of unused objects from deleted snapshots will be supported in the > >> up comming series of v0.7.x, I guess in about one month or two. > > > > I don't think the object reclaim patches should go into stable-0.7. > > The feature changes the underlying store layout and breaks backward > > compatibility. > > Does it mean that the whole cluster needs to be updated simultaneously or that we need to reformat it after install ? No need to reformat it, but please update all the sheep daemons after stopping sheepdog. Their protocol has no compatibility between 0.6.x and 0.7. > Still the protocol be compatible with qemu block driver used in qemu 1.5 or we need to upgrade qemu too ? IIUC, sheepdog 0.7 is still compatible with qemu 1.5. > > > > > I'll resend the series after rebasing and adding a document. Testing > > and reviewing would be greatly appreciated. Those are the missing > > things to merge the feature. > > > > Ok, thanks. > One question; did you implement a commit/rollback feature on snapshot deletion and space reclaim ? What do you mean by "a commit/rollback feature"? Thanks Kazutaka |