[sheepdog] ledger object leak

[Hitoshi Mitake]

On Fri, Oct 24, 2014 at 8:37 PM, Valerio Pachera <sirio81 at gmail.com> wrote:
> 2014-10-24 9:34 GMT+02:00 Hitoshi Mitake <mitake.hitoshi at lab.ntt.co.jp>:
>> 80 prefixed objects are inode objects. And keeping them is required by
>> current sheepdog implementation.
>
> Ok. I see the size of the inode object is 13M but because it's a
> sparse file, it's using less than that.
>
> ls -lh 807c2b2500000000
> -rw-r----- 1 root root 13M ott 24 00:17 807c2b2500000000
>
> du -h 807c2b2500000000
> 8,0K    807c2b2500000000
>
> When does / what makes the size of a inode object grow?

Create and write request, snapshotting, and cloning let inode objects grow.
But practically it wouldn't be so large, I think. Could you do
experiments and share results?

Thanks,
Hitoshi

>
> I was afraid of the 13M because taking often vdi snapshots was leading
> to waste lots of storage.
> 8k is almost irrelevant.
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