Thanks Mike for details reply! I checked on VMware and KVM. On KVM, after first snapshot, the secondary storage count for account increases by 1 (template + snapshot I suppose). After second snapshot, it again increases by 1.
On VmWare, the secondary storage count remains the same irrespective of how many snapshots I create. This is clearly an issue. I have two questions. 1) How can we know the snapshot size? The size is not listed in any API. 2) Is snapshot size counted in secondary storage count (and hence considered in SS limits)? I just want to be sure here. Regards, Gaurav On Tue, Dec 9, 2014 at 11:17 AM, Mike Tutkowski < mike.tutkow...@solidfire.com> wrote: > I guess I would expect the non-zero blocks of your disk to be backed up the > first time, which could lead to anywhere from some small amount of space > all the way up to 8 GB (in your situation). > > However, you mentioned that you see 9 GB consumed, which does seem > unexpected. > > When you say your template is 8 GB, I assume that's its physical size (and > the root disk's virtual size could be larger). > > If that's the case, I would expect 8 GB to be backed up for the first > snapshot. > > On Mon, Dec 8, 2014 at 10:39 PM, Gaurav Aradhye < > gaurav.arad...@clogeny.com> > wrote: > > > Thanks Mike! > > > > However, I am observing this in case of first snapshot also. Let me try > on > > various hypervisors to see the behavior. > > > > Regards, > > Gaurav > > > > On Tue, Dec 9, 2014 at 11:04 AM, Mike Tutkowski < > > mike.tutkow...@solidfire.com> wrote: > > > > > I'm not exactly sure how this number is calculated, but - if you are > > using > > > XenServer - remember that after the first snapshot for a volume, each > > > subsequent snapshot is only the blocks that have changed since the > prior > > > snapshot (this might even be true for ESX these days with CloudStack). > > > > > > That being the case, unless you change all 8 GB of blocks each time > > before > > > doing a snapshot, you should expect your snapshots to be < 8 GB > > > (potentially very small, if you didn't change much since the last > > > snapshot). > > > > > > On Mon, Dec 8, 2014 at 10:15 PM, Gaurav Aradhye < > > > gaurav.arad...@clogeny.com> > > > wrote: > > > > > > > Hello, > > > > > > > > When I create a snapshot, from say, template registered through an > > > account, > > > > then > > > > > > > > 1) How can I know the snapshot size on secondary storage? (API > > > > listSnapshots does not specify the snapshot size) > > > > > > > > 2) How is snapshot size counted in secondary storage used by the > > account? > > > > Currently I can see secondary storage count increasing by the (number > > of > > > > snapshots) and not the snapshot size. > > > > > > > > E.g. I have template sized 8 GB. I create a snapshot from it. Now if > I > > > list > > > > the secondary storage used by the account, then it lists as "9" (GB). > > If > > > I > > > > create another snapshot, then it lists it as 10. It is not possible > for > > > my > > > > snapshot size to be 1 (GB) because it's created from root volume > having > > > > size 8 GB. > > > > > > > > Can I say it's a bug? Secondary storage count being listed as > (Storage > > > > other than snapshot + number of snapshots) GB. > > > > > > > > Regards, > > > > Gaurav > > > > > > > > > > > > > > > > -- > > > *Mike Tutkowski* > > > *Senior CloudStack Developer, SolidFire Inc.* > > > e: mike.tutkow...@solidfire.com > > > o: 303.746.7302 > > > Advancing the way the world uses the cloud > > > <http://solidfire.com/solution/overview/?video=play>*™* > > > > > > > > > -- > *Mike Tutkowski* > *Senior CloudStack Developer, SolidFire Inc.* > e: mike.tutkow...@solidfire.com > o: 303.746.7302 > Advancing the way the world uses the cloud > <http://solidfire.com/solution/overview/?video=play>*™* >
