No -- it means that your clone had written approximately 10GB of space within the image before you created the first snapshot. If the "fast-diff" feature is enabled, note that it only calculates usage in object size chunks (defaults to 4MB) -- which means that even writing 1 byte to a 4MB object would flag the object as dirty (it's an upper-bound estimate). On Sun, Oct 8, 2017 at 12:01 PM, Josy <josy@xxxxxxxxxxxxxxxxxxxxx> wrote: > Hello, > > I noticed that when we create a snapshot of a clone, the first snapshot > seems to be quite large. > > For example: > > Clone VM is taking up 136MBs according to rbd du > First snapshot: 10GBs > Second snapshot: 104MBs > Third snapshot: 57MBs > > The clone is a Windows virtual machine, which does take around 10GB if it > wasn't a clone. Does this mean that the first snapshot of a clone needs to > have a full copy of the original cloned image? > > Ceph version : Luminous 12.2.1 > > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- Jason _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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