Helllo,
answering to myself in case some else sutmbles upon this thread in the
future. I was able to remove the unexpected snap, here is the recipe:
How to remove the unexpected snapshots:
1.) Stop the OSD
ceph-osd -i 14 --flush-journal
... flushed journal /var/lib/ceph/osd/ceph-14/journal for object store
/var/lib/ceph/osd/ceph-14
2.) List the Object in question
ceph-objectstore-tool --data-path /var/lib/ceph/osd/ceph-14
--journal-path
/dev/disk/by-partuuid/212e9db1-943b-45f9-9d83-cffaeb777db7 --op list
rbd_data.59cb9c679e2a9e3.0000000000003096
[wait ... it might take minutes]
["7.374",{"oid":"rbd_data.59cb9c679e2a9e3.0000000000003096","key":"","snapid":171076,"hash":2728045428,"max":0,"pool":7,"namespace":""}]
["7.374",{"oid":"rbd_data.59cb9c679e2a9e3.0000000000003096","key":"","snapid":171797,"hash":2728045428,"max":0,"pool":7,"namespace":""}]
["7.374",{"oid":"rbd_data.59cb9c679e2a9e3.0000000000003096","key":"","snapid":-2,"hash":2728045428,"max":0,"pool":7,"namespace":""}]
3.) Remove the snap from the object
ceph-objectstore-tool --data-path /var/lib/ceph/osd/ceph-14
--journal-path
/dev/disk/by-partuuid/212e9db1-943b-45f9-9d83-cffaeb777db7
["7.374",{"oid":"rbd_data.59cb9c679e2a9e3.0000000000003096","key":"","snapid":171076,"hash":2728045428,"max":0,"pool":7,"namespace":""}]
remove
[wait ... it might take minutes]
remove 7/a29aab74/rbd_data.59cb9c679e2a9e3.0000000000003096/29c44
4.) Start the OSD Again
5.) Do this for all OSD on which the snap it exists. If it still exists
on one of the other OSDs, it will be synced before repair starts and
thus cause harm again.
6.) ceph pg repair 7.374
Happy again and in need of sleep,
derjohn
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