As for now, when I run `dump_ops_in_flight`, `ops` in empty and `num_ops` is 0.
But when I run `ceph status`, I still get 15 clients failing to respond to cache pressure.
Where should I start solving this problem?
On Thu, Nov 10, 2016 at 6:16 PM Goncalo Borges <goncalo.borges@xxxxxxxxxxxxx> wrote:
Hi
"ceph daemon mds.<id> session ls", executed in your mds server, should give you hostname and client id of all your cephfs clients.
"ceph daemon mds.<id> dump_ops_in_flight" should give you operations not completed or pending to complete for certain clients ids. In case of problems, that those problematic clients will probably appear there.
Cheers
Goncalo
________________________________________
From: ceph-users [ceph-users-bounces@xxxxxxxxxxxxxx] on behalf of Yutian Li [lyt@xxxxxxxxxx]
Sent: 10 November 2016 15:21
To: ceph-users@xxxxxxxxxxxxxx
Subject: Locating CephFS clients in warn message
I get a HEALTH_WARN when I run `ceph status`. It says
health HEALTH_WARN
mds0: Many clients (17) failing to respond to cache pressure
I have 50 OSDs, 3 MONs, and 1 MDS. I just use CephFS and attach it to 20 ~ 30 clients using kernel mount option.
I wonder how to locate those "many" clients that are failing to respond. I don't even see an ID of the lagging clients anywhere.
Thanks!
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