For cephfs you can run the following on the server with the current active mds:
ceph daemon mds.$(hostname) session ls
Paul
2018-05-29 21:20 GMT+02:00 Reed Dier <reed.dier@xxxxxxxxxxx>:
Possibly helpful,If you are able to hit your ceph-mgr dashboard in a web browser, I find it possible to see a table of currently connected cephfs clients, hostnames, state, type (userspace/kernel), and ceph version.Assuming that the link is persistent, for me the url is ceph-mgr:7000/clients/1/Or if that fails, the traversal for me from ceph-mgr:7000 is the folder icon in the lefthand menu, the specific filesystem, then in the top left it will say “Filesystem <yourcephfs> /n Clients: ### Detail…”.The “Detail…” link should lead you to the aforementioned link from above, with a table of all the cephfs clients.Hopefully thats helpful.ReedOn May 29, 2018, at 4:42 AM, Paul Emmerich <paul.emmerich@xxxxxxxx> wrote:______________________________2018-05-29 9:41 GMT+02:00 Linh Vu <vul@xxxxxxxxxxxxxx>:Ah I remember that one, I still have it on my watch list on tracker.ceph.com
Thanks 😊
Alternatively, is there a way to check on a client node what ceph features (jewel, luminous etc.) it has? In our case, it's all CephFS clients, and it's a mix between ceph-fuse (which is Luminous 12.2.5) and kernel client (4.15.x). I suspect the latter is only supporting jewel features but I'd like to confirm.
From: Massimo Sgaravatto <massimo.sgaravatto@xxxxxxxxx>
Sent: Tuesday, 29 May 2018 4:51:56 PM
To: Linh Vu
Cc: ceph-users
Subject: Re: Luminous cluster - how to find out which clients are still jewel?As far as I know the status wrt this issue is still the one reported in this thread:
See also:
Cheers, Massimo
On Tue, May 29, 2018 at 8:39 AM, Linh Vu <vul@xxxxxxxxxxxxxx> wrote:
Hi all,
I have a Luminous 12.2.4 cluster. This is what `ceph features` tells me:
..."client": {"group": {"features": "0x7010fb86aa42ada","release": "jewel","num": 257},"group": {"features": "0x1ffddff8eea4fffb","release": "luminous","num": 820}}...
How do I find out which clients (IP/hostname/IDs) are actually on jewel feature set?
Regards,Linh
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--Paul Emmerich
Looking for help with your Ceph cluster? Contact us at https://croit.io
croit GmbH
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81247 München
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Paul Emmerich
Looking for help with your Ceph cluster? Contact us at https://croit.io
croit GmbH
Freseniusstr. 31h
81247 München
www.croit.io
Tel: +49 89 1896585 90
Looking for help with your Ceph cluster? Contact us at https://croit.io
croit GmbH
Freseniusstr. 31h
81247 München
www.croit.io
Tel: +49 89 1896585 90
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