Hi Istvan,
The number of objects in "im" pool (918.34k) doesn't line up with
"rbd du" output which says that only 2.2T are provisioned (that would
take roughly ~576k objects). This usually occurs when there are object
clones caused by previous snapshots -- keep in mind that trimming
object clones after a snapshot is removed is an asynchronous process
and it can take a while.
Just to confirm, what is the output of "rbd info im/root",
"rbd snap ls --all im/root", "ceph df" (please recapture) and
"ceph osd pool ls detail" (only "im" pool is of interest)?
Thanks,
Ilya
On Fri, Dec 1, 2023 at 5:31 AM Szabo, Istvan (Agoda)
<Istvan.Szabo@xxxxxxxxx> wrote:
>
> Thrash empty.
>
> Istvan Szabo
> Staff Infrastructure Engineer
> ---------------------------------------------------
> Agoda Services Co., Ltd.
> e: istvan.szabo@xxxxxxxxx
> ---------------------------------------------------
>
>
>
> ________________________________
> From: Ilya Dryomov <idryomov@xxxxxxxxx>
> Sent: Thursday, November 30, 2023 6:27 PM
> To: Szabo, Istvan (Agoda) <Istvan.Szabo@xxxxxxxxx>
> Cc: Ceph Users <ceph-users@xxxxxxx>
> Subject: Re: Space reclaim doesn't happening in nautilus RBD pool
>
> Email received from the internet. If in doubt, don't click any link nor open any attachment !
> ________________________________
>
> On Thu, Nov 30, 2023 at 8:25 AM Szabo, Istvan (Agoda)
> <Istvan.Szabo@xxxxxxxxx> wrote:
> >
> > Hi,
> >
> > Is there any config on Ceph that block/not perform space reclaim?
> > I test on one pool which has only one image 1.8 TiB in used.
> >
> >
> > rbd $p du im/root
> > warning: fast-diff map is not enabled for root. operation may be slow.
> > NAME PROVISIONED USED
> > root 2.2 TiB 1.8 TiB
> >
> >
> >
> > I already removed all snaphots and now pool has only one image alone.
> > I run both fstrim over the filesystem (XFS) and try rbd sparsify im/root (don't know what it is exactly but it mentions to reclaim something)
> > It still shows the pool used 6.9 TiB which totally not make sense right? It should be up to 3.6 (1.8 * 2) according to its replica?
>
> Hi Istvan,
>
> Have you checked RBD trash?
>
> $ rbd trash ls -p im
>
> Thanks,
>
> Ilya
>
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