On Tue, 25 Sep 2012, Dan Mick wrote: > Hemant: > > Yes, you can. Use ceph osd getmap -o <file> to get the OSD map, and then use > osdmaptool --find-object-map <objectname> <file> to output the > PG the object hashes to and the list of OSDs that PG maps to (primary first): > > $ ceph osd getmap -o osdmap > got osdmap epoch 59 > $ osdmaptool --test-map-object dmick.rbd osdmap > osdmaptool: osdmap file 'osdmap' > object 'dmick.rbd' -> 0.69c8 -> [3,1] > > shows dmick.rbd mapping to pg 0.69c8, which in turn maps to OSDs 3 and 1, 3 > being the primary. You can do this more simply with: ceph osd map <poolname> <objectname> sage > > On 09/25/2012 02:30 AM, hemant surale wrote: > > Hi Community, > > Is it possible to identify where exactly primary copy of obj > > is stored ? I am using crushmaps to use specific osds for data > > placement but i want to knw the primary capoy location. Or I need to > > replace pseudo random function by some deterministic function to guide > > ceph to utilize specific osd? > > > > > > Regards, > > Hemant Surale. > > -- > > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
