root@server5:/tmp# ceph pg 0.4 query
{ "state": "active+remapped",
  "epoch": 12246,
  "up": [],
  "acting": [
        1,
        3],
  "info": { "pgid": "0.4",
      "last_update": "0'0",
      "last_complete": "0'0",
      "log_tail": "0'0",
      "last_backfill": "MAX",
      "purged_snaps": "[]",
      "history": { "epoch_created": 1,
          "last_epoch_started": 12246,
          "last_epoch_clean": 12246,
          "last_epoch_split": 0,
          "same_up_since": 12245,
          "same_interval_since": 12245,
          "same_primary_since": 12234,
          "last_scrub": "0'0",
          "last_scrub_stamp": "2013-10-17 09:54:27.542107",
          "last_deep_scrub": "0'0",
          "last_deep_scrub_stamp": "2013-10-15 09:54:24.023996",
          "last_clean_scrub_stamp": "2013-10-17 09:54:27.542107"},
      "stats": { "version": "0'0",
          "reported_seq": "12270",
          "reported_epoch": "12246",
          "state": "active+remapped",
          "last_fresh": "2013-10-18 08:34:35.232973",
          "last_change": "2013-10-18 08:34:35.053154",
          "last_active": "2013-10-18 08:34:35.232973",
          "last_clean": "0.000000",
          "last_became_active": "0.000000",
          "last_unstale": "2013-10-18 08:34:35.232973",
          "mapping_epoch": 12234,
          "log_start": "0'0",
          "ondisk_log_start": "0'0",
          "created": 1,
          "last_epoch_clean": 12246,
          "parent": "0.0",
          "parent_split_bits": 0,
          "last_scrub": "0'0",
          "last_scrub_stamp": "2013-10-17 09:54:27.542107",
          "last_deep_scrub": "0'0",
          "last_deep_scrub_stamp": "2013-10-15 09:54:24.023996",
          "last_clean_scrub_stamp": "2013-10-17 09:54:27.542107",
          "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_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},
          "stat_cat_sum": {},
          "up": [],
          "acting": [
                1,
                3]},
      "empty": 1,
      "dne": 0,
      "incomplete": 0,
      "last_epoch_started": 12246},
  "recovery_state": [
        { "name": "Started\/Primary\/Active",
          "enter_time": "2013-10-18 08:34:35.052983",
          "might_have_unfound": [],
          "recovery_progress": { "backfill_target": -1,
              "waiting_on_backfill": 0,
              "backfill_pos": "0\/\/0\/\/-1",
              "backfill_info": { "begin": "0\/\/0\/\/-1",
                  "end": "0\/\/0\/\/-1",
                  "objects": []},
              "peer_backfill_info": { "begin": "0\/\/0\/\/-1",
                  "end": "0\/\/0\/\/-1",
                  "objects": []},
              "backfills_in_flight": [],
              "pull_from_peer": [],
              "pushing": []},
          "scrub": { "scrubber.epoch_start": "8",
              "scrubber.active": 0,
              "scrubber.block_writes": 0,
              "scrubber.finalizing": 0,
              "scrubber.waiting_on": 0,
              "scrubber.waiting_on_whom": []}},
        { "name": "Started",
          "enter_time": "2013-10-18 08:34:33.909553"}]}