Was there any activity against your cluster when you reduced the size
from 3 -> 2? I think maybe it was just taking time to percolate
through the system if nothing else was going on. When you reduced them
to size 1 then data needed to be deleted so everything woke up and
started processing.
-Greg
On Wed, Dec 10, 2014 at 5:27 AM, Eneko Lacunza <elacunza@xxxxxxxxx> wrote:
> Hi all,
>
> I fixed the issue with the following commands:
> # ceph osd pool set data size 1
> (wait some seconds for clean+active state of +64pgs)
> # ceph osd pool set data size 2
> # ceph osd pool set metadata size 1
> (wait some seconds for clean+active state of +64pgs)
> # ceph osd pool set metadata size 2
> # ceph osd pool set rbd size 1
> (wait some seconds for clean+active state of +64pgs)
> # ceph osd pool set rbd size 2
>
> This now gives me:
> # ceph status
> cluster 3e91b908-2af3-4288-98a5-dbb77056ecc7
> health HEALTH_OK
> monmap e3: 3 mons at
> {0=10.0.3.3:6789/0,1=10.0.3.1:6789/0,2=10.0.3.2:6789/0}, election epoch 32,
> quorum 0,1,2 1,2,0
> osdmap e275: 2 osds: 2 up, 2 in
> pgmap v395557: 256 pgs, 4 pools, 194 GB data, 49820 objects
> 388 GB used, 116 GB / 505 GB avail
> 256 active+clean
>
> I'm still curious whether this can be fixed without this trick?
>
> Cheers
> Eneko
>
>
> On 10/12/14 13:14, Eneko Lacunza wrote:
>>
>> Hi all,
>>
>> I have a small ceph cluster with just 2 OSDs, latest firefly.
>>
>> Default data, metadata and rbd pools were created with size=3 and
>> min_size=1
>> An additional pool rbd2 was created with size=2 and min_size=1
>>
>> This would give me a warning status, saying that 64 pgs were active+clean
>> and 192 active+degraded. (there are 64 pg per pool).
>>
>> I realized it was due to the size=3 in the three pools, so I changed that
>> value to 2:
>> # ceph osd pool set data size 2
>> # ceph osd pool set metadata size 2
>> # ceph osd pool set rbd size 2
>>
>> Those 3 pools are empty. After those commands status would report 64 pgs
>> active+clean, and 192 pgs active, with a warning saying 192 pgs were
>> unclean.
>>
>> I have created a rbd block with:
>> rbd create -p rbd --image test --size 1024
>>
>> And now the status is:
>> # ceph status
>> cluster 3e91b908-2af3-4288-98a5-dbb77056ecc7
>> health HEALTH_WARN 192 pgs stuck unclean; recovery 2/99640 objects
>> degraded (0.002%)
>> monmap e3: 3 mons at
>> {0=10.0.3.3:6789/0,1=10.0.3.1:6789/0,2=10.0.3.2:6789/0}, election epoch 32,
>> quorum 0,1,2 1,2,0
>> osdmap e263: 2 osds: 2 up, 2 in
>> pgmap v393763: 256 pgs, 4 pools, 194 GB data, 49820 objects
>> 388 GB used, 116 GB / 505 GB avail
>> 2/99640 objects degraded (0.002%)
>> 192 active
>> 64 active+clean
>>
>> Looking to an unclean non-empty pg:
>> # ceph pg 2.14 query
>> { "state": "active",
>> "epoch": 263,
>> "up": [
>> 0,
>> 1],
>> "acting": [
>> 0,
>> 1],
>> "actingbackfill": [
>> "0",
>> "1"],
>> "info": { "pgid": "2.14",
>> "last_update": "263'1",
>> "last_complete": "263'1",
>> "log_tail": "0'0",
>> "last_user_version": 1,
>> "last_backfill": "MAX",
>> "purged_snaps": "[]",
>> "history": { "epoch_created": 1,
>> "last_epoch_started": 136,
>> "last_epoch_clean": 136,
>> "last_epoch_split": 0,
>> "same_up_since": 135,
>> "same_interval_since": 135,
>> "same_primary_since": 11,
>> "last_scrub": "0'0",
>> "last_scrub_stamp": "2014-11-26 12:23:57.023493",
>> "last_deep_scrub": "0'0",
>> "last_deep_scrub_stamp": "2014-11-26 12:23:57.023493",
>> "last_clean_scrub_stamp": "0.000000"},
>> "stats": { "version": "263'1",
>> "reported_seq": "306",
>> "reported_epoch": "263",
>> "state": "active",
>> "last_fresh": "2014-12-10 12:53:37.766465",
>> "last_change": "2014-12-10 10:32:24.189000",
>> "last_active": "2014-12-10 12:53:37.766465",
>> "last_clean": "0.000000",
>> "last_became_active": "0.000000",
>> "last_unstale": "2014-12-10 12:53:37.766465",
>> "mapping_epoch": 128,
>> "log_start": "0'0",
>> "ondisk_log_start": "0'0",
>> "created": 1,
>> "last_epoch_clean": 136,
>> "parent": "0.0",
>> "parent_split_bits": 0,
>> "last_scrub": "0'0",
>> "last_scrub_stamp": "2014-11-26 12:23:57.023493",
>> "last_deep_scrub": "0'0",
>> "last_deep_scrub_stamp": "2014-11-26 12:23:57.023493",
>> "last_clean_scrub_stamp": "0.000000",
>> "log_size": 1,
>> "ondisk_log_size": 1,
>> "stats_invalid": "0",
>> "stat_sum": { "num_bytes": 112,
>> "num_objects": 1,
>> "num_object_clones": 0,
>> "num_object_copies": 2,
>> "num_objects_missing_on_primary": 0,
>> "num_objects_degraded": 1,
>> "num_objects_unfound": 0,
>> "num_objects_dirty": 1,
>> "num_whiteouts": 0,
>> "num_read": 0,
>> "num_read_kb": 0,
>> "num_write": 1,
>> "num_write_kb": 1,
>> "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": [
>> 0,
>> 1],
>> "acting": [
>> 0,
>> 1],
>> "up_primary": 0,
>> "acting_primary": 0},
>> "empty": 0,
>> "dne": 0,
>> "incomplete": 0,
>> "last_epoch_started": 136,
>> "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": "1",
>> "pgid": "2.14",
>> "last_update": "263'1",
>> "last_complete": "263'1",
>> "log_tail": "0'0",
>> "last_user_version": 0,
>> "last_backfill": "MAX",
>> "purged_snaps": "[]",
>> "history": { "epoch_created": 1,
>> "last_epoch_started": 136,
>> "last_epoch_clean": 136,
>> "last_epoch_split": 0,
>> "same_up_since": 0,
>> "same_interval_since": 0,
>> "same_primary_since": 0,
>> "last_scrub": "0'0",
>> "last_scrub_stamp": "2014-11-26 12:23:57.023493",
>> "last_deep_scrub": "0'0",
>> "last_deep_scrub_stamp": "2014-11-26 12:23:57.023493",
>> "last_clean_scrub_stamp": "0.000000"},
>> "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": 0,
>> "dne": 0,
>> "incomplete": 0,
>> "last_epoch_started": 136,
>> "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": "2014-12-01 17:14:33.709442",
>> "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": "0",
>> "scrubber.active": 0,
>> "scrubber.block_writes": 0,
>> "scrubber.finalizing": 0,
>> "scrubber.waiting_on": 0,
>> "scrubber.waiting_on_whom": []}},
>> { "name": "Started",
>> "enter_time": "2014-12-01 17:14:32.723733"}],
>> "agent_state": {}}
>>
>>
>> It seems like those 192 pgs didn't realize there's no need for a 3rd copy?
>>
>> How can I fix this so that I get active+clean for all pgs?
>>
>> Thanks a lot.
>> Eneko
>>
>
>
> --
> Zuzendari Teknikoa / Director Técnico
> Binovo IT Human Project, S.L.
> Telf. 943575997
> 943493611
> Astigarraga bidea 2, planta 6 dcha., ofi. 3-2; 20180 Oiartzun (Gipuzkoa)
> www.binovo.es
>
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