pg 6.f6 is stuck unclean for 68549.601723, current state active+remapped, last acting [29,25,6]
$ ceph pg 6.f6 query
{ "state": "active+remapped",
  "epoch": 2345,
  "up": [
        29,
        25],
  "acting": [
        29,
        25,
        6],
  "actingbackfill": [
        "6",
        "25",
        "29"],
  "info": { "pgid": "6.f6",
      "last_update": "0'0",
      "last_complete": "0'0",
      "log_tail": "0'0",
      "last_user_version": 0,
      "last_backfill": "MAX",
      "purged_snaps": "[]",
      "history": { "epoch_created": 481,
          "last_epoch_started": 552,
          "last_epoch_clean": 552,
          "last_epoch_split": 0,
          "same_up_since": 547,
          "same_interval_since": 548,
          "same_primary_since": 499,
          "last_scrub": "0'0",
          "last_scrub_stamp": "2014-09-03 14:57:31.189223",
          "last_deep_scrub": "0'0",
          "last_deep_scrub_stamp": "2014-08-29 14:56:12.770231",
          "last_clean_scrub_stamp": "2014-09-03 14:57:31.189223"},
      "stats": { "version": "0'0",
          "reported_seq": "1923",
          "reported_epoch": "2345",
          "state": "active+remapped",
          "last_fresh": "2014-09-04 09:57:50.355631",
          "last_change": "2014-09-04 09:21:20.357442",
          "last_active": "2014-09-04 09:57:50.355631",
          "last_clean": "2014-09-03 14:57:31.189950",
          "last_became_active": "0.000000",
          "last_unstale": "2014-09-04 09:57:50.355631",
          "mapping_epoch": 547,
          "log_start": "0'0",
          "ondisk_log_start": "0'0",
          "created": 481,
          "last_epoch_clean": 552,
          "parent": "0.0",
          "parent_split_bits": 0,
          "last_scrub": "0'0",
          "last_scrub_stamp": "2014-09-03 14:57:31.189223",
          "last_deep_scrub": "0'0",
          "last_deep_scrub_stamp": "2014-08-29 14:56:12.770231",
          "last_clean_scrub_stamp": "2014-09-03 14:57:31.189223",
          "log_size": 0,
          "ondisk_log_size": 0,
          "stats_invalid": "0",
          "stat_sum": { "num_bytes": 0,
              "num_objects": 0,
              "num_object_clones": 0,
              "num_object_copies": 0,
              "num_objects_missing_on_primary": 0,
              "num_objects_degraded": 0,
              "num_objects_unfound": 0,
              "num_objects_dirty": 0,
              "num_whiteouts": 0,
              "num_read": 0,
              "num_read_kb": 0,
              "num_write": 0,
              "num_write_kb": 0,
              "num_scrub_errors": 0,
              "num_shallow_scrub_errors": 0,
              "num_deep_scrub_errors": 0,
              "num_objects_recovered": 0,
              "num_bytes_recovered": 0,
              "num_keys_recovered": 0,
              "num_objects_omap": 0,
              "num_objects_hit_set_archive": 0},
          "stat_cat_sum": {},
          "up": [
                29,
                25],
          "acting": [
                29,
                25,
                6],
          "up_primary": 29,
          "acting_primary": 29},
      "empty": 1,
      "dne": 0,
      "incomplete": 0,
      "last_epoch_started": 552,
      "hit_set_history": { "current_last_update": "0'0",
          "current_last_stamp": "0.000000",
          "current_info": { "begin": "0.000000",
              "end": "0.000000",
              "version": "0'0"},
          "history": []}},
  "peer_info": [
        { "peer": "6",
          "pgid": "6.f6",
          "last_update": "0'0",
          "last_complete": "0'0",
          "log_tail": "0'0",
          "last_user_version": 0,
          "last_backfill": "MAX",
          "purged_snaps": "[]",
          "history": { "epoch_created": 481,
              "last_epoch_started": 552,
              "last_epoch_clean": 552,
              "last_epoch_split": 0,
              "same_up_since": 547,
              "same_interval_since": 548,
              "same_primary_since": 499,
              "last_scrub": "0'0",
              "last_scrub_stamp": "2014-09-03 14:57:31.189223",
              "last_deep_scrub": "0'0",
              "last_deep_scrub_stamp": "2014-08-29 14:56:12.770231",
              "last_clean_scrub_stamp": "2014-09-03 14:57:31.189223"},
          "stats": { "version": "0'0",
              "reported_seq": "91",
              "reported_epoch": "540",
              "state": "peering",
              "last_fresh": "2014-08-19 15:33:53.810263",
              "last_change": "2014-08-19 15:33:52.801947",
              "last_active": "2014-08-19 15:33:48.754220",
              "last_clean": "2014-08-19 15:30:35.387701",
              "last_became_active": "0.000000",
              "last_unstale": "2014-08-19 15:33:53.810263",
              "mapping_epoch": 547,
              "log_start": "0'0",
              "ondisk_log_start": "0'0",
              "created": 481,
              "last_epoch_clean": 524,
              "parent": "0.0",
              "parent_split_bits": 0,
              "last_scrub": "0'0",
              "last_scrub_stamp": "2014-08-19 14:55:45.492402",
              "last_deep_scrub": "0'0",
              "last_deep_scrub_stamp": "2014-08-15 14:55:30.525252",
              "last_clean_scrub_stamp": "2014-08-19 14:55:45.492402",
              "log_size": 0,
              "ondisk_log_size": 0,
              "stats_invalid": "0",
              "stat_sum": { "num_bytes": 0,
                  "num_objects": 0,
                  "num_object_clones": 0,
                  "num_object_copies": 0,
                  "num_objects_missing_on_primary": 0,
                  "num_objects_degraded": 0,
                  "num_objects_unfound": 0,
                  "num_objects_dirty": 0,
                  "num_whiteouts": 0,
                  "num_read": 0,
                  "num_read_kb": 0,
                  "num_write": 0,
                  "num_write_kb": 0,
                  "num_scrub_errors": 0,
                  "num_shallow_scrub_errors": 0,
                  "num_deep_scrub_errors": 0,
                  "num_objects_recovered": 0,
                  "num_bytes_recovered": 0,
                  "num_keys_recovered": 0,
                  "num_objects_omap": 0,
                  "num_objects_hit_set_archive": 0},
              "stat_cat_sum": {},
              "up": [
                    29,
                    25],
              "acting": [
                    29,
                    25,
                    6],
              "up_primary": 29,
              "acting_primary": 29},
          "empty": 1,
          "dne": 0,
          "incomplete": 0,
          "last_epoch_started": 552,
          "hit_set_history": { "current_last_update": "0'0",
              "current_last_stamp": "0.000000",
              "current_info": { "begin": "0.000000",
                  "end": "0.000000",
                  "version": "0'0"},
              "history": []}},
        { "peer": "25",
          "pgid": "6.f6",
          "last_update": "0'0",
          "last_complete": "0'0",
          "log_tail": "0'0",
          "last_user_version": 0,
          "last_backfill": "MAX",
          "purged_snaps": "[]",
          "history": { "epoch_created": 481,
              "last_epoch_started": 552,
              "last_epoch_clean": 552,
              "last_epoch_split": 0,
              "same_up_since": 0,
              "same_interval_since": 0,
              "same_primary_since": 0,
              "last_scrub": "0'0",
              "last_scrub_stamp": "2014-09-03 14:57:31.189223",
              "last_deep_scrub": "0'0",
              "last_deep_scrub_stamp": "2014-08-29 14:56:12.770231",
              "last_clean_scrub_stamp": "2014-09-03 14:57:31.189223"},
          "stats": { "version": "0'0",
              "reported_seq": "0",
              "reported_epoch": "0",
              "state": "inactive",
              "last_fresh": "0.000000",
              "last_change": "0.000000",
              "last_active": "0.000000",
              "last_clean": "0.000000",
              "last_became_active": "0.000000",
              "last_unstale": "0.000000",
              "mapping_epoch": 0,
              "log_start": "0'0",
              "ondisk_log_start": "0'0",
              "created": 0,
              "last_epoch_clean": 0,
              "parent": "0.0",
              "parent_split_bits": 0,
              "last_scrub": "0'0",
              "last_scrub_stamp": "0.000000",
              "last_deep_scrub": "0'0",
              "last_deep_scrub_stamp": "0.000000",
              "last_clean_scrub_stamp": "0.000000",
              "log_size": 0,
              "ondisk_log_size": 0,
              "stats_invalid": "0",
              "stat_sum": { "num_bytes": 0,
                  "num_objects": 0,
                  "num_object_clones": 0,
                  "num_object_copies": 0,
                  "num_objects_missing_on_primary": 0,
                  "num_objects_degraded": 0,
                  "num_objects_unfound": 0,
                  "num_objects_dirty": 0,
                  "num_whiteouts": 0,
                  "num_read": 0,
                  "num_read_kb": 0,
                  "num_write": 0,
                  "num_write_kb": 0,
                  "num_scrub_errors": 0,
                  "num_shallow_scrub_errors": 0,
                  "num_deep_scrub_errors": 0,
                  "num_objects_recovered": 0,
                  "num_bytes_recovered": 0,
                  "num_keys_recovered": 0,
                  "num_objects_omap": 0,
                  "num_objects_hit_set_archive": 0},
              "stat_cat_sum": {},
              "up": [],
              "acting": [],
              "up_primary": -1,
              "acting_primary": -1},
          "empty": 1,
          "dne": 0,
          "incomplete": 0,
          "last_epoch_started": 552,
          "hit_set_history": { "current_last_update": "0'0",
              "current_last_stamp": "0.000000",
              "current_info": { "begin": "0.000000",
                  "end": "0.000000",
                  "version": "0'0"},
              "history": []}}],
  "recovery_state": [
        { "name": "Started\/Primary\/Active",
          "enter_time": "2014-09-04 09:21:17.036190",
          "might_have_unfound": [],
          "recovery_progress": { "backfill_targets": [],
              "waiting_on_backfill": [],
              "last_backfill_started": "0\/\/0\/\/-1",
              "backfill_info": { "begin": "0\/\/0\/\/-1",
                  "end": "0\/\/0\/\/-1",
                  "objects": []},
              "peer_backfill_info": [],
              "backfills_in_flight": [],
              "recovering": [],
              "pg_backend": { "pull_from_peer": [],
                  "pushing": []}},
          "scrub": { "scrubber.epoch_start": "539",
              "scrubber.active": 0,
              "scrubber.block_writes": 0,
              "scrubber.waiting_on": 0,
              "scrubber.waiting_on_whom": []}},
        { "name": "Started",
          "enter_time": "2014-09-04 09:21:08.223200"}],
  "agent_state": {}}