This method will not work… I have to sync just the deltas after the initial sync as our bandwidth can not handle a full snapshot every time for every machine.
Anyone else have an idea? This has to be possible, right? On Jan 9, 2013, at 5:18 PM, Alexandre Kouznetsov <a...@ondore.com> wrote: > Hello. > > El 09/01/13 16:27, Chris Dutton escribió: >> Hello, >> >> What I am trying to accomplish is keep a vm on one host (a) in sync with >> another vm on host (b). They are both using local storage for the SR, >> which led me to investigate SXM. But it looks like it does just a little >> more then I want. >> >> From the Storage XenMotion wiki page: >> >> Each of a VM’s disks are snapshotted, and from the point of the snapshot >> onwards, all of the disk’s writes are synchronously mirrored to the >> destination storage repository. In the background, the snapshotted disk >> is copied to the destination location. Once a snapshot has finished >> copying, the next disk to be migrated is snapshot/mirrored. >> >> What I am hoping to do is everything except the last step (the actual >> migration). > > Since you are not actually migrating the VM, maybe the sync is unnecessary > (it might became obsolete in matter of seconds), but a copy of a snapshot. > > Maybe this reference would help: > http://lists.xen.org/archives/html/xen-api/2013-01/msg00038.html > (and the rest of the thread, about vm-migrate behavior) > > Note that the reference is about offline migration, but the mechanics is > similar. In your case, you would probably want to do a snapshot of the VDI > being used, and copy that snapshot to the other host, then attach it to the > target VM. > > >> The sync does not necessarily have to be synchronous for my situation, >> so maybe run a sync as a cron job but when a sync happens I only want >> the deltas copied (not a full snapshot). > As I understand it, yhe method I suggested will not allow you to update the > copy of the snapshot. Only create a new copy. > > > -- > Alexandre Kouznetsov > > > _______________________________________________ > Xen-api mailing list > Xen-api@lists.xen.org > http://lists.xen.org/cgi-bin/mailman/listinfo/xen-api
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