Ok it seems that OSD pools are finally to correctly restored (quite same amount of objects/datas than before restoration) so that should explain the situation I will have to dig why
Vincent Le ven. 7 juin 2019 à 08:41, Vincent Pharabot <[email protected]> a écrit : > Hello Cephers, > > > > I’m trying to understand Cephfs design and specially how file system view > reflect OSD pools in order to perform a backup / restore operation (VM > context). > > > > I’m able to backup and restore sucessfully OSDs but I have some issues > with filesystem layer. > > When I create files after backup time, after OSD restoration I’m still > seeing these files even if they are not usable (since osd do not have > knowledge of these). > > > > I tried to shutdown/start fs before/after restoration but no change > > Same no luck with journal export/import > > > > I had a look at http://docs.ceph.com/docs/mimic/cephfs/disaster-recovery/ > but since I do not really know what’s beneath all the tools/procedures, I > don’t know how to start with this > > > > I know there’s a really usefull feature called cephfs snapshot (.snap) but > for some reasons I could not use it here. > > > > Could someone kind enough to guide me ? > > > > My goal is to restore datas and cephfs layer. > > OSD restoration seems ok but how to make cephfs consistent with the OSD > pool restoration ? > > Is there some cache files somewhere on MDS to refresh ? (did not find any) > > Or maybe something wrong with the OSD metadata pool linked to my cephfs fs > but I don’t really know how to check > > > > I’m using Ceph Mimic (ceph version 13.2.5 > (cbff874f9007f1869bfd3821b7e33b2a6ffd4988) mimic (stable)) with 3 MDS / 1 > active and bluestore > > > > Thank you for your precious help ! > > > > Vincent >
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