The proper way would be to do this change atomically by adjusting the crush hierarchy and rules at the same time by editing and setting the crush map manually. Paul 2018-08-24 9:40 GMT+02:00 Konstantin Shalygin <k0ste@xxxxxxxx>: > On 08/24/2018 01:57 PM, Buchberger, Carsten wrote: >> >> Hi Konstantin, >> >> sounds easy;-) If i apply the new rule to the existing pools there won't >> be any osds to satisfy the requirements of the rule - because the osds are >> not in the new root yet. >> Isn't that a problem ? >> >> Thank you > > > Your IO will stall. > You need fast move osds to new root. Make list of commands `ceph osd crush > move <osd.n> host=<host-n>` and paste it after apply crush rule. > > > > > > k > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- Paul Emmerich Looking for help with your Ceph cluster? Contact us at https://croit.io croit GmbH Freseniusstr. 31h 81247 München www.croit.io Tel: +49 89 1896585 90 _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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