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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