On 03/14/2018 01:48 PM, Lars Marowsky-Bree wrote: > On 2018-02-28T02:38:34, Patrick Donnelly <pdonnell@xxxxxxxxxx> wrote: > >> I think it will be necessary to reduce the actives to 1 (max_mds -> 1; >> deactivate other ranks), shutdown standbys, upgrade the single active, >> then upgrade/start the standbys. >> >> Unfortunately this didn't get flagged in upgrade testing. Thanks for >> the report Dan. > > This means that - when the single active is being updated - there's a > time when there's no MDS active, right? > > Is another approach theoretically feasible? Have the updated MDS only go > into the incompatible mode once there's a quorum of new ones available, > or something? > > (From the point of view of a distributed system, this is double plus > ungood.) here is what I did and what worked without any problem: we have mons and mds on the same hosts, 3 host in total 1. stop the 2 non active mds 2. update ceph on all 3 hosts 3. restart the active mds 4. start the mds on the others HTH Dietmar -- _________________________________________ D i e t m a r R i e d e r, Mag.Dr. Innsbruck Medical University Biocenter - Division for Bioinformatics Email: dietmar.rieder@xxxxxxxxxxx Web: http://www.icbi.at
Attachment:
signature.asc
Description: OpenPGP digital signature
_______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
