27 Mar
2023
27 Mar
'23
8:28 p.m.
On Wed, Mar 22, 2023 at 10:51 PM Tony Liu <tonyliu0592(a)hotmail.com> wrote:
Hi,
I want
1) copy a snapshot to an image,
2) no need to copy snapshots,
3) no dependency after copy,
4) all same image format 2.
In that case, is rbd cp the same as rbd clone + rbd flatten?
I ran some tests, seems like it, but want to confirm, in case of missing anything.
Hi Tony,
Yes, at a high level it should be the same.
Also, seems cp is a bit faster and flatten, is that
true?
I can't think of anything that would make "rbd cp" faster. I would
actually expect it to be slower since "rbd cp" also attempts to sparsify
the destination image (see --sparse-size option), making it more space
efficient.
Thanks,
Ilya