Cinder

  1. Bug #1209199
  2. Comment #4

Comment 4 for bug 1209199

Revision history for this message
Edward Hope-Morley (hopem) wrote :

xiaoxi,

Option (c) is not currently available if you are cloning a volume from another volume. This modification is only for the case of volume clone from volume NOT volume clone from snapshot i.e.

I want to allow copy-on-write if the user does the following:

cinder --source-volid <id> ...

Currently, only full copy is supported for this command.

Your concern about performance is valid and this would obviously need some testing. I'm also hoping that jdurgin might give his thoughts on this.