Ceph

the osd log a fewlines up should tell us what the error was that it got back from the fs. can you attach the last few hundreds lines of that log (or the whole thing)?

this looks like a dup of #5269

actually, no:

    -5> 2013-07-16 12:43:08.632339 7ffe2d5a9700 15 filestore(/var/lib/ceph/osd/5) create_collection /var/lib/ceph/osd/5/current/7.0_head
    -4> 2013-07-16 12:43:08.632359 7ffe2d5a9700 10 filestore(/var/lib/ceph/osd/5) create_collection /var/lib/ceph/osd/5/current/7.0_head = -17
    -3> 2013-07-16 12:43:08.632362 7ffe2d5a9700  0 filestore(/var/lib/ceph/osd/5)  error (17) File exists not handled on operation 20 (6778010.0.1, or op 1, counting from 0)
    -2> 2013-07-16 12:43:08.632378 7ffe2d5a9700  0 filestore(/var/lib/ceph/osd/5) unexpected error code
    -1> 2013-07-16 12:43:08.632380 7ffe2d5a9700  0 filestore(/var/lib/ceph/osd/5)  transaction dump:
{ "ops": [
        { "op_num": 0,
          "op_name": "mkcoll",
          "collection": "7.0_head"},
        { "op_num": 1,
          "op_name": "mkcoll",
          "collection": "7.0_head"},
        { "op_num": 2,
          "op_name": "collection_setattr",
          "collection": "7.0_head",
          "name": "info",
          "length": 1},

Andrey, what version is the osd running? the sha1 in the log (43c453982c37a55defc5d9ffcfd8cf8a60755f24) is not in ceph.git

Please excuse me, I am horribly wrong - we`re using our own patch which is affecting collections too and it was a general cause for the current problem. By the way, may I ask to add some work with collection seperation via config tunable in the git? Same question was about a year ago and nobody implemented this yet in the mainline.

Sorry if it was unclear: dedicated parameter(s) for path of the omap and meta collections.