Re: Ceph PG's incomplete and OSD drives lost

[Иван Кудрявцев <kudryavtsev_ia@xxxxxxxxx>]

Hello, Irek.

Look at this please:

root@ceph-osd-1-2:~# rbd -p rbd ls
rbd: pool rbd doesn't contain rbd images

root@ceph-osd-1-2:~# ceph osd dump | grep pool
pool 0 'data' rep size 3 min_size 1 crush_ruleset 0 object_hash rjenkins pg_num 448 pgp_num 448 last_change 23 owner 0 crash_replay_interval 45
pool 1 'metadata' rep size 3 min_size 1 crush_ruleset 1 object_hash rjenkins pg_num 448 pgp_num 448 last_change 12 owner 0
pool 2 'rbd' rep size 3 min_size 1 crush_ruleset 2 object_hash rjenkins pg_num 448 pgp_num 448 last_change 14 owner 0


root@ceph-osd-1-2:~# rados -p rbd ls | less
rb.0.2f64.238e1f29.000000031d19
....
rb.0.3bfe.2ae8944a.00000001c515
rb.0.dcd4f.238e1f29.00000003c183
cloud1-ftp1-block-xfs01.rbd
...
and it stalles after, because (I think) founds some incomplete, stale or another PG.

31.10.2013 11:35, Ирек Фасихов пишет:

root@ceph-osd-1-2:~# rbd -p POOLNAME ls 
rbd: pool rbd doesn't contain rbd images 
root@ceph-osd-1-2:~# 

2013/10/31 Иван Кудрявцев <kudryavtsev_ia@xxxxxxxxx>

Hello, List.

I met very big trouble during ceph upgrade from bobtail to cuttlefish.

My OSDs started to crash to stale so LA went to 100+ on node, after I stop OSD I unable to launch it again because of errors. So, I started to reformat OSDs and eventually meet that I have "incomplete" PGs and It seems to me that I lost actual data (It seems some drives I use is buggy and lost partition and filesystem at all after reboot node as them was empty, and I placed them in all my nodes in one time). I use ceph as source for RBD images, so all my images are unaccessible and ceph health is:

root@ceph-osd-1-2:~# ceph -s
  cluster e74c9e0b-40ce-45e4-904a-676cbaaf042d
   health HEALTH_WARN 536 pgs backfill; 28 pgs backfilling; 546 pgs degraded; 19 pgs down; 76 pgs incomplete; 33 pgs peering; 23 pgs stale; 109 pgs stuck inactive; 23 pgs stuck stale; 673 pgs stuck unclean; 11 requests are blocked > 32 sec; recovery 2769254/9737405 degraded (28.439%);  recovering 76 o/s, 169MB/s; mds cluster is degraded; clock skew detected on mon.0, mon.1
   monmap e1: 3 mons at {0=10.252.0.3:6789/0,1=10.252.0.4:6789/0,2=10.252.0.2:6789/0}, election epoch 5486, quorum 0,1,2 0,1,2
   osdmap e52800: 48 osds: 41 up, 41 in
    pgmap v22294835: 1344 pgs: 671 active+clean, 18 active+remapped+wait_backfill, 150 active+degraded+wait_backfill, 12 down+peering, 14 stale+peering, 13 active+degraded+backfilling, 368 active+degraded+remapped+wait_backfill, 7 stale+down+peering, 74 incomplete, 15 active+degraded+remapped+backfilling, 2 stale+incomplete; 6883 GB data, 14627 GB used, 31364 GB / 46031 GB avail; 2769254/9737405 degraded (28.439%);  recovering 76 o/s, 169MB/s
   mdsmap e564: 1/1/1 up {0=2=up:replay}, 2 up:standby

Actually, my images stored in RBD pool, but when I try to access it I get:

root@ceph-osd-1-2:~# rbd ls
rbd: pool rbd doesn't contain rbd images
root@ceph-osd-1-2:~#

however, I can access images directly:

root@ceph-osd-1-2:~# rbd info lun-000000017
rbd image 'lun-000000017':
        size 10000 MB in 320000 objects
        order 15 (32768 bytes objects)
        block_name_prefix: rb.0.3c07.238e1f29
        format: 1

and what I really would like is to export data even with errors as usual files and try to check and fix some using fsck. As I understand I should someway fix "incomplete" pgs and "inactive" pgs but I don't really understand how to do it?

root@ceph-osd-1-2:~#  ceph pg dump | awk '{print $1, $14, $2 ,$6/1024/1024 , $9}' | grep '\.' | grep inc
dumped all in format plain
2.1be [43,15,37] 1603 4018.79 incomplete
2.1aa [20,37,44] 4875 11930.5 incomplete
0.1a4 [45,37,27] 0 0 incomplete
2.1a1 [43,45,37] 988 2497.98 incomplete
2.1a0 [30,29,37] 0 0 incomplete
0.1a2 [30,29,37] 0 0 incomplete
1.1a3 [45,37,27] 0 0 incomplete
2.1a2 [45,37,27] 0 0 incomplete
1.1a1 [30,29,37] 0 0 incomplete
2.19d [18,42,24] 0 0 incomplete
0.19f [18,42,24] 0 0 incomplete
1.19e [18,42,24] 0 0 incomplete
0.198 [1,43,37] 0 0 incomplete
1.197 [1,43,37] 0 0 incomplete
2.196 [1,43,37] 0 0 incomplete
2.183 [28,30,37] 0 0 incomplete
2.15f [27,32,37] 0 0 incomplete
0.15c [42,31,37] 0 0 incomplete
1.15b [42,31,37] 0 0 incomplete
2.15a [42,31,37] 0 0 incomplete
2.137 [7,30,37] 0 0 incomplete
0.130 [41,31,25] 139 446.865 stale+incomplete
0.12d [31,37,27] 0 0 incomplete
1.12c [31,37,27] 0 0 incomplete
2.12b [31,37,27] 0 0 incomplete
0.124 [30,37,42] 0 0 incomplete
1.123 [30,37,42] 0 0 incomplete
2.122 [30,37,42] 0 0 incomplete
0.109 [31,37,27] 0 0 incomplete
1.108 [31,37,27] 0 0 incomplete
2.107 [31,37,27] 0 0 incomplete
2.f4 [12,37,20] 3132 7941.63 incomplete
2.ee [12,11,37] 3959 9825.61 incomplete
0.ec [32,37,42] 0 0 incomplete
1.eb [32,37,42] 0 0 incomplete
2.ea [32,37,42] 0 0 incomplete
2.de [45,37,21] 1228 2960.71 incomplete
2.d8 [9,28,37] 832 2029.15 incomplete
2.c1 [13,30,37] 0 0 incomplete
2.b9 [32,2,37] 2971 7305.59 incomplete
2.a4 [30,22,33] 1343 3365.41 incomplete
2.9e [43,37,45] 651 1633.18 incomplete
2.9a [30,2,37] 0 0 incomplete
2.95 [6,43,37] 0 0 incomplete
1.96 [6,43,37] 0 0 incomplete
0.97 [6,43,37] 4 8.00209 incomplete
2.91 [47,28,1] 4518 11066.5 stale+incomplete
0.64 [32,37,8] 0 0 incomplete
1.63 [32,37,8] 0 0 incomplete
2.62 [32,37,8] 0 0 incomplete
0.59 [32,37,21] 311 1010.57 incomplete
2.55 [27,16,37] 0 0 incomplete
0.57 [27,16,37] 0 0 incomplete
1.56 [27,16,37] 0 0 incomplete
2.57 [32,37,21] 42 72.6953 incomplete
2.4c [11,37,30] 3315 8320.87 incomplete
0.49 [18,7,37] 0 0 incomplete
1.48 [18,7,37] 0 0 incomplete
2.47 [18,7,37] 0 0 incomplete
2.3d [28,44,37] 0 0 incomplete
0.3f [28,44,37] 0 0 incomplete
1.3e [28,44,37] 0 0 incomplete
2.2a [43,16,37] 5379 13236.4 incomplete
0.18 [32,42,37] 0 0 incomplete
1.17 [32,42,37] 0 0 incomplete
2.16 [32,42,37] 0 0 incomplete
2.d [45,29,37] 0 0 incomplete
1.e [45,29,37] 0 0 incomplete
0.f [45,29,37] 0 0 incomplete
2.c [18,20,37] 1208 3002.21 incomplete
2.9 [45,37,27] 0 0 incomplete
1.a [45,37,27] 0 0 incomplete
0.b [45,37,27] 28 80.5886 incomplete
2.7 [22,37,30] 2889 7272.09 incomplete
0.1 [31,37,27] 39 135.707 incomplete
1.0 [31,37,27] 0 0 incomplete

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--

С уважением, Фасихов Ирек Нургаязович

Моб.: +79229045757

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