Hi Frank,
thanks for you hint. The find for the inode is really fast. At least fast enough for me:
$ time find /mnt/point -inum 1093514215110 -print -quit
real 0m3,009s
user 0m0,037s
sys 0m0,032s
Cheers,
Lars
Tue, 17 Dec 2019 15:08:06 +0000
Frank Schilder <frans@xxxxxx> ==> Marc Roos <M.Roos@xxxxxxxxxxxxxxxxx>, taeuber <taeuber@xxxxxxx> :
> I think you can do a find for the inode (-inum n). At last I hope you can.
>
> However, I vaguely remember that there was a thread where someone gave a really nice MDS command for finding the path to an inode in no time.
>
> Best regards,
>
> =================
> Frank Schilder
> AIT Risø Campus
> Bygning 109, rum S14
>
> ________________________________________
> From: Marc Roos <M.Roos@xxxxxxxxxxxxxxxxx>
> Sent: 17 December 2019 14:19:54
> To: Frank Schilder; taeuber
> Cc: ceph-users
> Subject: RE: Re: list CephFS snapshots
>
> Thanks, Good tip! If I do not know where I created these, is there a way
> to get their location in the filesystem? Or maybe a command that deletes
> by snapid?
>
>
> {
> "snapid": 54,
> "ino": 1099519875627,
> "stamp": "2017-09-13 21:21:35.769863",
> "name": "snap-20170913"
> },
> {
> "snapid": 153485,
> "ino": 1099519910289,
> "stamp": "2019-10-06 03:18:03.933510",
> "name": "snap-6"
> },
> {
> "snapid": 153489,
> "ino": 1099519910289,
> "stamp": "2019-10-07 03:21:03.218324",
> "name": "snap-7"
> },
>
>
>
> -----Original Message-----
> Cc: ceph-users@xxxxxxx
> Subject: Re: list CephFS snapshots
>
> Have you tried "ceph daemon mds.NAME dump snaps" (available since
> mimic)?
>
> =================
> Frank Schilder
> AIT Risø Campus
> Bygning 109, rum S14
>
> ________________________________________
> From: Lars Täuber <taeuber@xxxxxxx>
> Sent: 17 December 2019 12:32:34
> To: Stephan Mueller
> Cc: ceph-users@xxxxxxx
> Subject: Re: list CephFS snapshots
>
> Hi Michael,
>
> thanks for your gist.
> This is at least a way to do it. But there are many directories in our
> cluster.
> The "find $1 -type d" lasts for about 90 minutes to find all 2.6 million
> directories.
>
> Is there another (faster) way e.g. via mds?
>
> Cheers,
> Lars
>
>
> Mon, 16 Dec 2019 17:03:41 +0000
> Stephan Mueller <smueller@xxxxxxxx> ==> "taeuber@xxxxxxx"
> <taeuber@xxxxxxx>, "ceph-users@xxxxxxx" <ceph-users@xxxxxxx> :
> > Hi Lars,
> >
> > > Is there a mean to list all snapshots existing in a (subdir of)
> > > Cephfs?
> > > I can't use the find dommand to look for the ".snap" dirs.
> >
> > You can, but you can't search for the '.snap' directories, you have to
>
> > append them to the directory like `find $cephFsDir/.snap` but I it's
> > better to use `ls` instead, to list all snapshots.
> >
> > >
> > > I'd like to remove certain (or all) snapshots within a CephFS. But
> > > how do I find them?
> > >
> >
> > I just created a gist for you that can do that:
> > https://gist.github.com/Devp00l/2473f5953d578f440fc71b3d602a9c23
> >
> > As you can see in the script, snapshots starting with an underscore
> > are filtered out as these directories belong to snapshots that were
> > created in upper directories and these underscore snapshots can't be
> > used for deletion.
> >
> > The deletion of a snapshot can be done by calling `rmdir`.
> >
> > But if you really want to manage CephFS snapshots easily take a look
> > at the dashboard, as we have integrated the snapshot and quota
> > management by now :)
> >
> > You can delete multiple snapshots of a directory or just create new
> > snapshots on a directory basis easily through the UI.
> >
> >
> > Stephan
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