I have an issue very similar to this thread:
http://article.gmane.org/gmane.comp.file-systems.ceph.user/3197. I have
19 unfound objects that are part of a VM image that I have already
recovered from backup. If I query pg 4.30 ( the one with the unfound
objects), it says it is still querying osd.8, looking for the unfound
objects. Because of this, when I run:
# ceph pg 4.30 mark_unfound_lost revert
Error EINVAL: pg has 19 unfound objects but we haven't probed all
sources, not marking lost
It refuses to remove them. It has been "querying" osd.8 for almost 2
days now, and there is only 200GB on it, so I don't see why it would
take so long. So how can I force it to either stop querying, or revert
the unfound objects?
Here is how I got into this state. I have only 6 OSDs total, 3 on one
host (vashti) and 3 on another (zadok). I set the noout flag so I could
reboot zadok. Zadok was down for 2 minutes. When it came up ceph began
recovering the objects that had not been replicated yet. Before recovery
finished, osd.6, on vashti, died (IO errors on disk, whole drive
un-recoverable). Since osd.6 had objects that had not yet had a chance
to replicate to any OSD on zadok, they were lost. I cannot recover
anything further from osd.6.
Here is the output of "ceph pg 4.30 query":
{ "state": "active+recovering+degraded+remapped",
"epoch": 20364,
"up": [
2,
0],
"acting": [
1,
2],
"info": { "pgid": "4.30",
"last_update": "20364'10377395",
"last_complete": "0'0",
"log_tail": "20161'10325373",
"last_user_version": 10377395,
"last_backfill": "MAX",
"purged_snaps": "[1~7,10~4]",
"history": { "epoch_created": 386,
"last_epoch_started": 20323,
"last_epoch_clean": 20161,
"last_epoch_split": 0,
"same_up_since": 20322,
"same_interval_since": 20322,
"same_primary_since": 20311,
"last_scrub": "20118'10315975",
"last_scrub_stamp": "2014-04-29 11:54:57.358096",
"last_deep_scrub": "20050'10061396",
"last_deep_scrub_stamp": "2014-04-24 11:39:40.313745",
"last_clean_scrub_stamp": "2014-04-29 11:54:57.358096"},
"stats": { "version": "20364'10377395",
"reported_seq": "17957416",
"reported_epoch": "20364",
"state": "active+recovering+degraded+remapped",
"last_fresh": "2014-05-01 10:00:51.210564",
"last_change": "2014-05-01 09:03:31.708198",
"last_active": "2014-05-01 10:00:51.210564",
"last_clean": "2014-04-29 16:14:12.127562",
"last_became_active": "0.000000",
"last_unstale": "2014-05-01 10:00:51.210564",
"mapping_epoch": 20317,
"log_start": "20161'10325373",
"ondisk_log_start": "20161'10325373",
"created": 386,
"last_epoch_clean": 20161,
"parent": "0.0",
"parent_split_bits": 0,
"last_scrub": "20118'10315975",
"last_scrub_stamp": "2014-04-29 11:54:57.358096",
"last_deep_scrub": "20050'10061396",
"last_deep_scrub_stamp": "2014-04-24 11:39:40.313745",
"last_clean_scrub_stamp": "2014-04-29 11:54:57.358096",
"log_size": 52022,
"ondisk_log_size": 52022,
"stats_invalid": "0",
"stat_sum": { "num_bytes": 9078859264,
"num_objects": 2598,
"num_object_clones": 360,
"num_object_copies": 0,
"num_objects_missing_on_primary": 0,
"num_objects_degraded": 0,
"num_objects_unfound": 0,
"num_read": 703887,
"num_read_kb": 164523202,
"num_write": 8785487,
"num_write_kb": 69327327,
"num_scrub_errors": 0,
"num_shallow_scrub_errors": 0,
"num_deep_scrub_errors": 0,
"num_objects_recovered": 24428,
"num_bytes_recovered": 93261249024,
"num_keys_recovered": 0},
"stat_cat_sum": {},
"up": [
2,
0],
"acting": [
1,
2]},
"empty": 0,
"dne": 0,
"incomplete": 0,
"last_epoch_started": 20323},
"recovery_state": [
{ "name": "Started\/Primary\/Active",
"enter_time": "2014-05-01 09:03:30.557244",
"might_have_unfound": [
{ "osd": 0,
"status": "already probed"},
{ "osd": 2,
"status": "already probed"},
{ "osd": 6,
"status": "osd is down"},
{ "osd": 8,
"status": "querying"}],
"recovery_progress": { "backfill_target": 2,
"waiting_on_backfill": 0,
"last_backfill_started": "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": [],
"recovering": [],
"pg_backend": { "pull_from_peer": [],
"pushing": []}},
"scrub": { "scrubber.epoch_start": "0",
"scrubber.active": 0,
"scrubber.block_writes": 0,
"scrubber.finalizing": 0,
"scrubber.waiting_on": 0,
"scrubber.waiting_on_whom": []}},
{ "name": "Started",
"enter_time": "2014-05-01 09:03:29.347540"}]}
Thanks.
Kevin
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