On Fri, Jan 15, 2021 at 4:36 AM Rafael Diaz Maurin <Rafael.DiazMaurin@xxxxxxxxxxxxxxx> wrote: > > Hello cephers, > > I run Nautilus (14.2.15) > > Here is my context : each night a script take a snapshot from each RBD volume in a pool (all the disks of the VMs hosted) on my ceph production cluster. Then each snapshot is exported (rbd export-diff | rbd import-diff in SSH) towards my ceph bakup cluster. > > 0. Yesterday, and for the firt time, I had this error when I ran ''rbd -p MY_POOL du'' on the ceph backup cluster : > 021-01-14 11:41:29.294 7f1f2fbcf0c0 -1 librbd::DiffIterate: diff_object_map: failed to load object map rbd_object_map.781776950f8dd5.000000000000b740 > > 1. I tried to find the image concerned by the error, and I find this one, with a slight diffence with the number of the object-map : > > rbd image 'MY_IMAGE': > size 30 GiB in 7680 objects > order 22 (4 MiB objects) > snapshot_count: 32 > id: 781776950f8dd5 > block_name_prefix: rbd_data.781776950f8dd5 > format: 2 > features: layering, exclusive-lock, object-map, fast-diff, deep-flatten, operations > op_features: snap-trash > flags: > create_timestamp: Thu Mar 19 01:00:27 2020 > access_timestamp: Thu Mar 19 01:00:27 2020 > modify_timestamp: Thu Jan 14 01:42:23 2021 > > 2. Then I ran a check wich not show any error > rbd -p MY_POOL object-map check "MY_IMAGE" > Object Map Check: 100% complete...done. > > 3. Then, I still ran a rebuild > rbd -p MY_POOL object-map rebuild "MY_IMAGE" > Object Map Rebuild: 100% complete...done. > > 4. But the error is still here : > 2021-01-15 09:33:58.775 7fa088e350c0 -1 librbd::DiffIterate: diff_object_map: failed to load object map rbd_object_map.781776950f8dd5.000000000000b740 You would need to rebuild the snapshot object map. First find the name of the snapshot associated with snapshot id b740 (46912) via "rbd snap ls <image-spec>", then run rebuild on that particule snapshot via "rbd object-map rebuild <image-spec>@<snap name>". > > Do someone know how to find the the image concerned by the object-map error and fix this error. > > Thank you for your help, > > Rafael > > > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx -- Jason _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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