[ceph-users] Reducing Max_mds
rresnick at fau.edu
Tue Oct 30 03:28:34 PDT 2018
Associate Director Research Computing
Office of Information Technology
Florida Atlantic University
777 Glades Road, CM22, Rm 173B
Boca Raton, FL 33431
From: John Spray <jspray at redhat.com>
Sent: Tuesday, October 30, 2018 5:26 AM
To: Rhian Resnick
Cc: ceph-users at lists.ceph.com
Subject: Re: [ceph-users] Reducing Max_mds
On Tue, Oct 30, 2018 at 6:36 AM Rhian Resnick <rresnick at fau.edu> wrote:
> I am looking to decrease our max mds servers as we had a server failure and need to remove a node.
> When we attempt to decrease the number of mds servers from 5 to 4 (or any other number) they never transition to standby. They just stay active.
> ceph fs set cephfs max_mds X
After you decrease max_mds, use "ceph mds deactivate <rank>" to bring
the actual number of active daemons in line with your new intended
>From Ceph 13.x that happens automatically, but since you're on 12.x it
needs doing by hand.
> Nothing looks useful in the mds or mon logs and I was wondering what you recommend looking at?
> We are on 12.2.9 running Centos.
> ceph-users mailing list
> ceph-users at lists.ceph.com
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