On Sun, Jan 29, 2017 at 6:40 AM, Muthusamy Muthiah
<muthiah.muthusamy@xxxxxxxxx> wrote:
> Hi All,
>
> Also tried EC profile 3+1 on 5 node cluster with bluestore enabled . When
> an OSD is down the cluster goes to ERROR state even when the cluster is n+1
> . No recovery happening.
>
> health HEALTH_ERR
> 75 pgs are stuck inactive for more than 300 seconds
> 75 pgs incomplete
> 75 pgs stuck inactive
> 75 pgs stuck unclean
> monmap e2: 5 mons at
> {ca-cn1=10.50.5.117:6789/0,ca-cn2=10.50.5.118:6789/0,ca-cn3=10.50.5.119:6789/0,ca-cn4=10.50.5.120:6789/0,ca-cn5=10.50.5.121:6789/0}
> election epoch 10, quorum 0,1,2,3,4
> ca-cn1,ca-cn2,ca-cn3,ca-cn4,ca-cn5
> mgr active: ca-cn1 standbys: ca-cn4, ca-cn3, ca-cn5, ca-cn2
> osdmap e264: 60 osds: 59 up, 59 in; 75 remapped pgs
> flags sortbitwise,require_jewel_osds,require_kraken_osds
> pgmap v119402: 1024 pgs, 1 pools, 28519 GB data, 21548 kobjects
> 39976 GB used, 282 TB / 322 TB avail
> 941 active+clean
> 75 remapped+incomplete
> 8 active+clean+scrubbing
>
> this seems to be an issue with bluestore , recovery not happening properly
> with EC .
It's possible but it seems a lot more likely this is some kind of
config issue. Can you share your osd map ("ceph osd getmap")?
-Greg
>
> Thanks,
> Muthu
>
> On 24 January 2017 at 12:57, Muthusamy Muthiah <muthiah.muthusamy@xxxxxxxxx>
> wrote:
>>
>> Hi Greg,
>>
>> We use EC:4+1 on 5 node cluster in production deployments with filestore
>> and it does recovery and peering when one OSD goes down. After few mins ,
>> other OSD from a node where the fault OSD exists will take over the PGs
>> temporarily and all PGs goes to active + clean state . Cluster also does not
>> goes down during this recovery process.
>>
>> Only on bluestore we see cluster going to error state when one OSD is
>> down.
>> We are still validating this and let you know additional findings.
>>
>> Thanks,
>> Muthu
>>
>> On 21 January 2017 at 02:06, Shinobu Kinjo <skinjo@xxxxxxxxxx> wrote:
>>>
>>> `ceph pg dump` should show you something like:
>>>
>>> * active+undersized+degraded ... [NONE,3,2,4,1] 3 [NONE,3,2,4,1]
>>>
>>> Sam,
>>>
>>> Am I wrong? Or is it up to something else?
>>>
>>>
>>> On Sat, Jan 21, 2017 at 4:22 AM, Gregory Farnum <gfarnum@xxxxxxxxxx>
>>> wrote:
>>> > I'm pretty sure the default configs won't let an EC PG go active with
>>> > only "k" OSDs in its PG; it needs at least k+1 (or possibly more? Not
>>> > certain). Running an "n+1" EC config is just not a good idea.
>>> > For testing you could probably adjust this with the equivalent of
>>> > min_size for EC pools, but I don't know the parameters off the top of
>>> > my head.
>>> > -Greg
>>> >
>>> > On Fri, Jan 20, 2017 at 2:15 AM, Muthusamy Muthiah
>>> > <muthiah.muthusamy@xxxxxxxxx> wrote:
>>> >> Hi ,
>>> >>
>>> >> We are validating kraken 11.2.0 with bluestore on 5 node cluster with
>>> >> EC
>>> >> 4+1.
>>> >>
>>> >> When an OSD is down , the peering is not happening and ceph health
>>> >> status
>>> >> moved to ERR state after few mins. This was working in previous
>>> >> development
>>> >> releases. Any additional configuration required in v11.2.0
>>> >>
>>> >> Following is our ceph configuration:
>>> >>
>>> >> mon_osd_down_out_interval = 30
>>> >> mon_osd_report_timeout = 30
>>> >> mon_osd_down_out_subtree_limit = host
>>> >> mon_osd_reporter_subtree_level = host
>>> >>
>>> >> and the recovery parameters set to default.
>>> >>
>>> >> [root@ca-cn1 ceph]# ceph osd crush show-tunables
>>> >>
>>> >> {
>>> >> "choose_local_tries": 0,
>>> >> "choose_local_fallback_tries": 0,
>>> >> "choose_total_tries": 50,
>>> >> "chooseleaf_descend_once": 1,
>>> >> "chooseleaf_vary_r": 1,
>>> >> "chooseleaf_stable": 1,
>>> >> "straw_calc_version": 1,
>>> >> "allowed_bucket_algs": 54,
>>> >> "profile": "jewel",
>>> >> "optimal_tunables": 1,
>>> >> "legacy_tunables": 0,
>>> >> "minimum_required_version": "jewel",
>>> >> "require_feature_tunables": 1,
>>> >> "require_feature_tunables2": 1,
>>> >> "has_v2_rules": 1,
>>> >> "require_feature_tunables3": 1,
>>> >> "has_v3_rules": 0,
>>> >> "has_v4_buckets": 0,
>>> >> "require_feature_tunables5": 1,
>>> >> "has_v5_rules": 0
>>> >> }
>>> >>
>>> >> ceph status:
>>> >>
>>> >> health HEALTH_ERR
>>> >> 173 pgs are stuck inactive for more than 300 seconds
>>> >> 173 pgs incomplete
>>> >> 173 pgs stuck inactive
>>> >> 173 pgs stuck unclean
>>> >> monmap e2: 5 mons at
>>> >>
>>> >> {ca-cn1=10.50.5.117:6789/0,ca-cn2=10.50.5.118:6789/0,ca-cn3=10.50.5.119:6789/0,ca-cn4=10.50.5.120:6789/0,ca-cn5=10.50.5.121:6789/0}
>>> >> election epoch 106, quorum 0,1,2,3,4
>>> >> ca-cn1,ca-cn2,ca-cn3,ca-cn4,ca-cn5
>>> >> mgr active: ca-cn1 standbys: ca-cn2, ca-cn4, ca-cn5, ca-cn3
>>> >> osdmap e1128: 60 osds: 59 up, 59 in; 173 remapped pgs
>>> >> flags sortbitwise,require_jewel_osds,require_kraken_osds
>>> >> pgmap v782747: 2048 pgs, 1 pools, 63133 GB data, 46293 kobjects
>>> >> 85199 GB used, 238 TB / 322 TB avail
>>> >> 1868 active+clean
>>> >> 173 remapped+incomplete
>>> >> 7 active+clean+scrubbing
>>> >>
>>> >> MON log:
>>> >>
>>> >> 2017-01-20 09:25:54.715684 7f55bcafb700 0 log_channel(cluster) log
>>> >> [INF] :
>>> >> osd.54 out (down for 31.703786)
>>> >> 2017-01-20 09:25:54.725688 7f55bf4d5700 0 mon.ca-cn1@0(leader).osd
>>> >> e1120
>>> >> crush map has features 288250512065953792, adjusting msgr requires
>>> >> 2017-01-20 09:25:54.729019 7f55bf4d5700 0 log_channel(cluster) log
>>> >> [INF] :
>>> >> osdmap e1120: 60 osds: 59 up, 59 in
>>> >> 2017-01-20 09:25:54.735987 7f55bf4d5700 0 log_channel(cluster) log
>>> >> [INF] :
>>> >> pgmap v781993: 2048 pgs: 1869 active+clean, 173 incomplete, 6
>>> >> active+clean+scrubbing; 63159 GB data, 85201 GB used, 238 TB / 322 TB
>>> >> avail;
>>> >> 21825 B/s rd, 163 MB/s wr, 2046 op/s
>>> >> 2017-01-20 09:25:55.737749 7f55bf4d5700 0 mon.ca-cn1@0(leader).osd
>>> >> e1121
>>> >> crush map has features 288250512065953792, adjusting msgr requires
>>> >> 2017-01-20 09:25:55.744338 7f55bf4d5700 0 log_channel(cluster) log
>>> >> [INF] :
>>> >> osdmap e1121: 60 osds: 59 up, 59 in
>>> >> 2017-01-20 09:25:55.749616 7f55bf4d5700 0 log_channel(cluster) log
>>> >> [INF] :
>>> >> pgmap v781994: 2048 pgs: 29 remapped+incomplete, 1869 active+clean,
>>> >> 144
>>> >> incomplete, 6 active+clean+scrubbing; 63159 GB data, 85201 GB used,
>>> >> 238 TB /
>>> >> 322 TB avail; 44503 B/s rd, 45681 kB/s wr, 518 op/s
>>> >> 2017-01-20 09:25:56.768721 7f55bf4d5700 0 log_channel(cluster) log
>>> >> [INF] :
>>> >> pgmap v781995: 2048 pgs: 47 remapped+incomplete, 1869 active+clean,
>>> >> 126
>>> >> incomplete, 6 active+clean+scrubbing; 63159 GB data, 85201 GB used,
>>> >> 238 TB /
>>> >> 322 TB avail; 20275 B/s rd, 72742 kB/s wr, 665 op/s
>>> >>
>>> >> Thanks,
>>> >> Muthu
>>> >>
>>> >>
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>>> >>
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>>
>>
>
>
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