All; This might be a noob type question, but this thread is interesting, and there's one thing I would like clarified. David Turner mentions setting 3 flags on OSDs, Götz has mentioned 5 flags, do the commands need to be run on all OSD nodes, or just one? Thank you, Dominic L. Hilsbos, MBA Director – Information Technology Perform Air International Inc. DHilsbos@xxxxxxxxxxxxxx 300 S. Hamilton Pl. Gilbert, AZ 85233 Phone: (480) 610-3500 Fax: (480) 610-3501 www.PerformAir.com From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of David Turner Sent: Wednesday, February 14, 2018 9:02 AM To: Götz Reinicke Cc: ceph-users Subject: Re: Shutting down half / full cluster ceph osd set noout ceph osd set nobackfill ceph osd set norecover Noout will prevent OSDs from being marked out during the maintenance and no PGs will be able to shift data around with the other 2 flags. After everything is done, unset the 3 flags and you're good to go. On Wed, Feb 14, 2018 at 5:25 AM Götz Reinicke <goetz.reinicke@xxxxxxxxxxxxxxx> wrote: Thanks! Götz Am 14.02.2018 um 11:16 schrieb Kai Wagner <kwagner@xxxxxxxx>: Hi, maybe it's worth looking at this: http://lists.ceph.com/pipermail/ceph-users-ceph.com/2017-April/017378.html Kai On 02/14/2018 11:06 AM, Götz Reinicke wrote: Hi, We have some work to do on our power lines for all building and we have to shut down all systems. So there is also no traffic on any ceph client. Pitty, we have to shot down some ceph nodes too in an affected building. To avoid rebalancing - as I see there is no need for it, as there is no traffic on clients - how can I safely set the remaining cluster nodes in a „keep calm and wait“ state? Is that the noout option? Thanks for feedback and suggestions! Regards . Götz _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com Götz Reinicke IT-Koordinator IT-OfficeNet +49 7141 969 82420 goetz.reinicke@xxxxxxxxxxxxxxx Filmakademie Baden-Württemberg GmbH Akademiehof 10 71638 Ludwigsburg http://www.filmakademie.de Eintragung Amtsgericht Stuttgart HRB 205016 Vorsitzende des Aufsichtsrates: Petra Olschowski Staatssekretärin im Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg Geschäftsführer: Prof. Thomas Schadt Götz Reinicke IT-Koordinator IT-OfficeNet +49 7141 969 82420 goetz.reinicke@xxxxxxxxxxxxxxx Filmakademie Baden-Württemberg GmbH Akademiehof 10 71638 Ludwigsburg http://www.filmakademie.de Eintragung Amtsgericht Stuttgart HRB 205016 Vorsitzende des Aufsichtsrates: Petra Olschowski Staatssekretärin im Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg Geschäftsführer: Prof. Thomas Schadt _______________________________________________ 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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