My two cents, with default luminous cluster 4nodes, 2x mds, taking 21 seconds to respond?? Is that not a bit long for a 4 node, 2x mds cluster? After flushing caches and doing [@c03 sbin]# ceph mds fail c failed mds gid 3464231 [@c04 5]# time ls -l total 2 ... real 0m21.891s user 0m0.002s sys 0m0.001s I am getting with this ceph tell mds.a injectargs '--mds_beacon_grace=5' Error EPERM: problem getting command descriptions from mds.a -----Original Message----- From: Patrick Donnelly [mailto:pdonnell@xxxxxxxxxx] Sent: 20 February 2019 21:46 To: Fyodor Ustinov Cc: ceph-users Subject: Re: faster switch to another mds On Tue, Feb 19, 2019 at 11:39 AM Fyodor Ustinov <ufm@xxxxxx> wrote: > > Hi! > > From documentation: > > mds beacon grace > Description: The interval without beacons before Ceph declares an MDS laggy (and possibly replace it). > Type: Float > Default: 15 > > I do not understand, 15 - are is seconds or beacons? seconds > And an additional misunderstanding - if we gently turn off the MDS (or MON), why it does not inform everyone interested before death - "I am turned off, no need to wait, appoint a new active server" The MDS does inform the monitors if it has been shutdown. If you pull the plug or SIGKILL, it does not. :) -- Patrick Donnelly _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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