Re: [librbd] Add interface of get the snapshot size?

[Wido den Hollander <wido@42on.com>]

On 03/24/2014 02:30 PM, Haomai Wang wrote:
> Hi all,
>
> As we know, snapshot is a lightweight resource in librbd and we
> doesn't have any statistic informations about it. But it causes some
> problems to the cloud management.
>
> We can't measure the size of snapshot, different snapshot will occur
> different space. So we don't have way to estimate the resource usage
> of user.
>
> Maybe we can have a counter to record space usage when volumn created.

What do you mean with space usage? Cluster wide or pool usage?

> When creating snapshot, the counter is freeze and store as the size of
> snapshot. New counter will assign to zero for the volume.
>
> Any feedback is appreciate!
>


-- 
Wido den Hollander
42on B.V.

Phone: +31 (0)20 700 9902
Skype: contact42on