Thanks Greg, Do you mean ceph osd map command is not displaying accurate information ?
I guess, either of these things are happening with my cluster - ceph osd map is not printing true information - Object to PG mapping is not correct ( one object is mapped to multiple PG's ) This is happening for several objects , but the cluster is Healthy. Need expert suggestion. On Tue, Feb 23, 2016 at 7:20 PM, Gregory Farnum <gfar...@redhat.com> wrote: > This is not a bug. The map command just says which PG/OSD an object maps > to; it does not go out and query the osd to see if there actually is such > an object. > -Greg > > > On Tuesday, February 23, 2016, Vickey Singh <vickey.singh22...@gmail.com> > wrote: > >> Hello Guys >> >> I am getting wired output from osd map. The object does not exists on >> pool but osd map still shows its PG and OSD on which its stored. >> >> So i have rbd device coming from pool 'gold' , this image has an object >> 'rb.0.10f61.238e1f29.000000002ac5' >> >> The below commands verifies this >> >> *[root@ceph-node1 ~]# rados -p gold ls | grep -i >> rb.0.10f61.238e1f29.000000002ac5* >> *rb.0.10f61.238e1f29.000000002ac5* >> *[root@ceph-node1 ~]#* >> >> This object lives on pool gold and OSD 38,0,20 , which is correct >> >> *[root@ceph-node1 ~]# ceph osd map gold rb.0.10f61.238e1f29.000000002ac5* >> *osdmap e1357 pool 'gold' (1) object 'rb.0.10f61.238e1f29.000000002ac5' >> -> pg 1.11692600 (1.0) -> up ([38,0,20], p38) acting ([38,0,20], p38)* >> *[root@ceph-node1 ~]#* >> >> >> Since i don't have object 'rb.0.10f61.238e1f29.000000002ac5' in data and >> rbd pools , rados ls will not list it. Which is expected. >> >> *[root@ceph-node1 ~]# rados -p data ls | grep -i >> rb.0.10f61.238e1f29.000000002ac5* >> *[root@ceph-node1 ~]# rados -p rbd ls | grep -i >> rb.0.10f61.238e1f29.000000002ac5* >> >> >> But , how come the object is showing in osd map of pool data and rbd. >> >> *[root@ceph-node1 ~]# ceph osd map data rb.0.10f61.238e1f29.000000002ac5* >> *osdmap e1357 pool 'data' (2) object 'rb.0.10f61.238e1f29.000000002ac5' >> -> pg 2.11692600 (2.0) -> up ([3,51,29], p3) acting ([3,51,29], p3)* >> *[root@ceph-node1 ~]#* >> >> *[root@ceph-node1 ~]# ceph osd map rbd rb.0.10f61.238e1f29.000000002ac5* >> *osdmap e1357 pool 'rbd' (0) object 'rb.0.10f61.238e1f29.000000002ac5' -> >> pg 0.11692600 (0.0) -> up ([41,20,3], p41) acting ([41,20,3], p41)* >> *[root@ceph-node1 ~]#* >> >> >> In ceph, object is unique and belongs to only one pool. So why does it >> shows up in all pool's osd map. >> >> Is this some kind of BUG in Ceph >> >> Ceph Hammer 0.94.5 >> CentOS 7.2 >> >
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