Thanks a lot for your help. Konstantin Shalygin writes: > On 04/27/2018 05:05 PM, Igor Gajsin wrote: >> I have a crush rule like > > > You still can use device classes! > > >> * host0 has a piece of data on osd.0 > Not peace, full object. If we talk about non-EC pools. >> * host1 has pieces of data on osd.1 and osd.2 > host1 has copy on osd.1 *or* osd.2 >> * host2 has no data > host2 also will be have one copy of object. > > Also do not forget - hosts with half of osds of host1 (i.e. host0 and > host2) will be do "double work" in comparison. > You can minimize this impact via decreasing osd crush weights for host1. > > > > > > k -- With best regards, Igor Gajsin _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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