Ceph pg unfound处理过程的示例分析

小编给大家分享一下Ceph pg unfound处理过程的示例分析，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧！

今天检查ceph集群，发现有pg丢失，于是就有了本文~~~

1.查看集群状态

[root@k8snode001 ~]# ceph health detail HEALTH_ERR 1/973013 objects unfound (0.000%); 17 scrub errors; Possible data damage: 1 pg recovery_unfound, 8 pgs inconsistent, 1 pg repair; Degraded data redundancy: 1/2919039 objects degraded (0.000%), 1 pg degraded OBJECT_UNFOUND 1/973013 objects unfound (0.000%)     pg 2.2b has 1 unfound objects OSD_SCRUB_ERRORS 17 scrub errors PG_DAMAGED Possible data damage: 1 pg recovery_unfound, 8 pgs inconsistent, 1 pg repair     pg 2.2b is active+recovery_unfound+degraded, acting [14,22,4], 1 unfound     pg 2.44 is active+clean+inconsistent, acting [14,8,21]     pg 2.73 is active+clean+inconsistent, acting [25,14,8]     pg 2.80 is active+clean+scrubbing+deep+inconsistent+repair, acting [4,8,14]     pg 2.83 is active+clean+inconsistent, acting [14,13,6]     pg 2.ae is active+clean+inconsistent, acting [14,3,2]     pg 2.c4 is active+clean+inconsistent, acting [8,21,14]     pg 2.da is active+clean+inconsistent, acting [23,14,15]     pg 2.fa is active+clean+inconsistent, acting [14,23,25] PG_DEGRADED Degraded data redundancy: 1/2919039 objects degraded (0.000%), 1 pg degraded     pg 2.2b is active+recovery_unfound+degraded, acting [14,22,4], 1 unfound

从输出发现pg 2.2b is active+recovery_unfound+degraded, acting [14,22,4], 1 unfound

现在我们来查看pg 2.2b，看看这个pg的想想信息。

[root@k8snode001 ~]# ceph pg dump_json pools    |grep 2.2b dumped all 2.2b       2487                  1        1         0       1  9533198403 3048     3048                active+recovery_unfound+degraded 2020-07-23 08:56:07.669903  10373'5448370  10373:7312614  [14,22,4]         14  [14,22,4]             14  10371'5437258 2020-07-23 08:56:06.637012   10371'5437258 2020-07-23 08:56:06.637012             0

可以看到它现在只有一个副本

2.查看pg map

[root@k8snode001 ~]# ceph pg map 2.2b osdmap e10373 pg 2.2b (2.2b) -> up [14,22,4] acting [14,22,4]

从pg map可以看出，pg 2.2b分布到osd [14,22,4]上

3.查看存储池状态

[root@k8snode001 ~]# ceph osd pool stats k8s-1 pool k8s-1 id 2   1/1955664 objects degraded (0.000%)   1/651888 objects unfound (0.000%)   client io 271 KiB/s wr, 0 op/s rd, 52 op/s wr  [root@k8snode001 ~]# ceph osd pool ls detail|grep k8s-1 pool 2 'k8s-1' replicated size 3 min_size 1 crush_rule 0 object_hash rjenkins pg_num 256 pgp_num 256 last_change 88 flags hashpspool,selfmanaged_snaps stripe_width 0 application rbd

4.尝试恢复pg 2.2b丢失地块

[root@k8snode001 ~]# ceph pg repair 2.2b

如果一直修复不成功，可以查看卡住PG的具体信息，主要关注recovery_state，命令如下

[root@k8snode001 ~]# ceph pg 2.2b  query {     "......     "recovery_state": [         {             "name": "Started/Primary/Active",             "enter_time": "2020-07-21 14:17:05.855923",             "might_have_unfound": [],             "recovery_progress": {                 "backfill_targets": [],                 "waiting_on_backfill": [],                 "last_backfill_started": "MIN",                 "backfill_info": {                     "begin": "MIN",                     "end": "MIN",                     "objects": []                 },                 "peer_backfill_info": [],                 "backfills_in_flight": [],                 "recovering": [],                 "pg_backend": {                     "pull_from_peer": [],                     "pushing": []                 }             },             "scrub": {                 "scrubber.epoch_start": "10370",                 "scrubber.active": false,                 "scrubber.state": "INACTIVE",                 "scrubber.start": "MIN",                 "scrubber.end": "MIN",                 "scrubber.max_end": "MIN",                 "scrubber.subset_last_update": "0'0",                 "scrubber.deep": false,                 "scrubber.waiting_on_whom": []             }         },         {             "name": "Started",             "enter_time": "2020-07-21 14:17:04.814061"         }     ],     "agent_state": {} }

如果repair修复不了;两种解决方案，回退旧版或者直接删除

5.解决方案

回退旧版 [root@k8snode001 ~]# ceph pg  2.2b  mark_unfound_lost revert 直接删除 [root@k8snode001 ~]# ceph pg  2.2b  mark_unfound_lost delete

6.验证

我这里直接删除了，然后ceph集群重建pg,稍等会再看，pg状态变为active+clean

[root@k8snode001 ~]#  ceph pg  2.2b query {     "state": "active+clean",     "snap_trimq": "[]",     "snap_trimq_len": 0,     "epoch": 11069,     "up": [         12,         22,         4     ],

再次查看集群状态

[root@k8snode001 ~]# ceph health detail HEALTH_OK

以上是"Ceph pg unfound处理过程的示例分析"这篇文章的所有内容，感谢各位的阅读！相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注行业资讯频道！