[ceph-users] Snapshot space

Josy josy at colossuscloudtech.com
Sun Oct 8 09:01:17 PDT 2017


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

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