Hi,
I know this topic seems to be handled a lot (as far as I can see), but I
reached the end of my google_foo.
* We have OSDs that are near full, but there are also OSDs that are only
loaded with 50%.
* We have 4,8,16 TB rotating disks in the cluster.
* The disks that get packed are 4TB disks and very empty disks are also 4TB
* The OSD nodes are all around the same total disk space (51 - 59)
* The balancer tells me that it can not find further optimization, or that
pg_num is decreasin.
How can I debug further before the cluster goes into a bad state?
[root@s3db1 ~]# ceph osd df tree | sort -nk 17 | head -n 30
ID CLASS WEIGHT REWEIGHT SIZE RAW USE DATA OMAP META AVAIL
%USE VAR PGS STATUS TYPE NAME
MIN/MAX VAR: 0.75/1.23 STDDEV: 6.96
TOTAL 673 TiB 474 TiB 452 TiB 100 GiB 1.2 TiB 199
TiB 70.39
-3 58.49872 - 58 TiB 39 TiB 36 TiB 8.2 GiB 85 GiB 19
TiB 67.40 0.96 - host s3db2
-4 58.49872 - 58 TiB 40 TiB 35 TiB 35 GiB 81 GiB 19
TiB 67.91 0.96 - host s3db3
-11 50.94173 - 51 TiB 35 TiB 35 TiB 3.5 GiB 94 GiB 16
TiB 68.00 0.97 - host s3db10
-10 51.28331 - 51 TiB 35 TiB 35 TiB 4.6 GiB 93 GiB 16
TiB 69.16 0.98 - host s3db9
-6 58.89636 - 59 TiB 41 TiB 40 TiB 2.4 GiB 102 GiB 18
TiB 69.15 0.98 - host s3db5
-12 50.99052 - 51 TiB 36 TiB 36 TiB 1.8 GiB 93 GiB 15
TiB 69.99 0.99 - host s3db11
-2 58.20561 - 58 TiB 41 TiB 37 TiB 9.6 GiB 96 GiB 17
TiB 70.00 0.99 - host s3db1
-1 673.44452 - 673 TiB 474 TiB 452 TiB 100 GiB 1.2 TiB 199
TiB 70.39 1.00 - root default
-5 58.49872 - 58 TiB 42 TiB 35 TiB 7.0 GiB 94 GiB 17
TiB 71.06 1.01 - host s3db4
-8 58.89636 - 59 TiB 42 TiB 42 TiB 3.6 GiB 108 GiB 17
TiB 71.91 1.02 - host s3db7
-7 58.89636 - 59 TiB 43 TiB 42 TiB 15 GiB 120 GiB 16
TiB 72.69 1.03 - host s3db6
-37 58.55478 - 59 TiB 43 TiB 43 TiB 4.4 GiB 117 GiB 16
TiB 73.18 1.04 - host s3db12
-9 51.28331 - 51 TiB 38 TiB 38 TiB 4.9 GiB 103 GiB 13
TiB 74.18 1.05 - host s3db8
15 hdd 3.63689 1.00000 3.6 TiB 1.9 TiB 1.7 TiB 2.1 GiB 0 B 1.7
TiB 52.87 0.75 45 up osd.15
6 hdd 3.63689 1.00000 3.6 TiB 1.9 TiB 1.7 TiB 1.7 GiB 0 B 1.7
TiB 52.90 0.75 46 up osd.6
12 hdd 3.63689 1.00000 3.6 TiB 1.9 TiB 1.7 TiB 570 MiB 0 B 1.7
TiB 53.04 0.75 41 up osd.12
81 hdd 3.63689 1.00000 3.6 TiB 2.0 TiB 1.7 TiB 895 MiB 0 B 1.7
TiB 54.26 0.77 51 up osd.81
27 hdd 3.73630 1.00000 3.7 TiB 2.1 TiB 2.0 TiB 6.8 MiB 5.8 GiB 1.6
TiB 56.12 0.80 47 up osd.27
3 hdd 3.63689 1.00000 3.6 TiB 2.1 TiB 1.6 TiB 510 MiB 0 B 1.6
TiB 57.04 0.81 51 up osd.3
5 hdd 3.63689 1.00000 3.6 TiB 2.1 TiB 1.5 TiB 431 MiB 0 B 1.5
TiB 57.88 0.82 49 up osd.5
80 hdd 3.63689 1.00000 3.6 TiB 2.1 TiB 1.5 TiB 1.8 GiB 0 B 1.5
TiB 58.31 0.83 51 up osd.80
25 hdd 3.73630 1.00000 3.7 TiB 2.2 TiB 2.1 TiB 4.1 MiB 6.1 GiB 1.5
TiB 58.91 0.84 39 up osd.25
0 hdd 3.73630 1.00000 3.7 TiB 2.2 TiB 2.1 TiB 83 MiB 6.2 GiB 1.5
TiB 60.03 0.85 46 up osd.0
79 hdd 3.63689 1.00000 3.6 TiB 2.3 TiB 1.4 TiB 1.8 GiB 0 B 1.4
TiB 62.53 0.89 47 up osd.79
61 hdd 7.32619 1.00000 7.3 TiB 4.6 TiB 4.6 TiB 1.1 GiB 12 GiB 2.7
TiB 62.80 0.89 101 up osd.61
67 hdd 7.27739 1.00000 7.3 TiB 4.6 TiB 4.6 TiB 557 MiB 13 GiB 2.7
TiB 63.29 0.90 96 up osd.67
72 hdd 7.32619 1.00000 7.3 TiB 4.6 TiB 4.6 TiB 107 MiB 11 GiB 2.7
TiB 63.36 0.90 87 up osd.72
[root@s3db1 ~]# ceph osd df tree | sort -nk 17 | tail
51 hdd 7.27739 1.00000 7.3 TiB 5.6 TiB 5.5 TiB 724 MiB 14 GiB 1.7
TiB 76.34 1.08 105 up osd.51
71 hdd 3.68750 1.00000 3.7 TiB 2.8 TiB 2.8 TiB 3.7 MiB 7.8 GiB 867
GiB 77.04 1.09 47 up osd.71
82 hdd 3.63689 1.00000 3.6 TiB 2.8 TiB 839 GiB 628 MiB 0 B 839
GiB 77.48 1.10 45 up osd.82
14 hdd 3.63689 1.00000 3.6 TiB 2.9 TiB 777 GiB 18 GiB 0 B 777
GiB 79.14 1.12 59 up osd.14
4 hdd 3.63689 1.00000 3.6 TiB 2.9 TiB 752 GiB 826 MiB 0 B 752
GiB 79.80 1.13 53 up osd.4
75 hdd 3.68750 1.00000 3.7 TiB 2.9 TiB 2.9 TiB 523 MiB 8.2 GiB 757
GiB 79.95 1.14 53 up osd.75
76 hdd 3.68750 1.00000 3.7 TiB 3.0 TiB 3.0 TiB 237 MiB 9.2 GiB 668
GiB 82.30 1.17 50 up osd.76
33 hdd 3.73630 1.00000 3.7 TiB 3.1 TiB 3.0 TiB 380 MiB 8.5 GiB 671
GiB 82.46 1.17 57 up osd.33
34 hdd 3.73630 1.00000 3.7 TiB 3.1 TiB 3.0 TiB 464 MiB 8.4 GiB 605
GiB 84.18 1.20 60 up osd.34
35 hdd 3.73630 1.00000 3.7 TiB 3.2 TiB 3.1 TiB 352 MiB 8.7 GiB 515
GiB 86.55 1.23 53 up osd.35
[root@s3db1 ~]# ceph balancer status
{
"last_optimize_duration": "0:00:00.020142",
"plans": [],
"mode": "upmap",
"active": true,
"optimize_result": "Unable to find further optimization, or pool(s)
pg_num is decreasing, or distribution is already perfect",
"last_optimize_started": "Thu Mar 11 13:42:32 2021"
}
[root@s3db1 ~]# ceph df
RAW STORAGE:
CLASS SIZE AVAIL USED RAW USED %RAW USED
hdd 673 TiB 199 TiB 474 TiB 474 TiB 70.41
TOTAL 673 TiB 199 TiB 474 TiB 474 TiB 70.41
POOLS:
POOL ID PGS STORED
OBJECTS USED %USED MAX AVAIL
rbd 0 64 0 B
0 0 B 0 19 TiB
.rgw.root 1 64 98 KiB
118 98 KiB 0 19 TiB
eu-central-1.rgw.control 2 64 0 B
8 0 B 0 19 TiB
eu-central-1.rgw.data.root 3 64 1022 KiB
3.02k 1022 KiB 0 19 TiB
eu-central-1.rgw.gc 4 64 84 MiB
32 84 MiB 0 19 TiB
eu-central-1.rgw.log 5 64 220 MiB
564 220 MiB 0 19 TiB
eu-central-1.rgw.users.uid 6 64 2.8 MiB
6.89k 2.8 MiB 0 19 TiB
eu-central-1.rgw.users.keys 7 64 262 KiB
6.70k 262 KiB 0 19 TiB
eu-central-1.rgw.meta 8 64 384 KiB
1k 384 KiB 0 19 TiB
eu-central-1.rgw.users.email 9 64 40 B
1 40 B 0 19 TiB
eu-central-1.rgw.buckets.index 10 64 10 GiB
67.54k 10 GiB 0.02 19 TiB
eu-central-1.rgw.buckets.data 11 1024 151 TiB
106.48M 151 TiB 72.67 19 TiB
eu-central-1.rgw.buckets.non-ec 12 64 268 MiB
13.03k 268 MiB 0 19 TiB
eu-central-1.rgw.usage 13 64 501 MiB
32 501 MiB 0 19 TiB
eu-msg-1.rgw.control 56 64 0 B
8 0 B 0 19 TiB
eu-msg-1.rgw.data.root 57 64 71 KiB
221 71 KiB 0 19 TiB
eu-msg-1.rgw.gc 58 64 60 KiB
32 60 KiB 0 19 TiB
eu-msg-1.rgw.log 59 64 835 KiB
242 835 KiB 0 19 TiB
eu-msg-1.rgw.users.uid 60 64 56 KiB
107 56 KiB 0 19 TiB
eu-msg-1.rgw.usage 61 64 36 MiB
25 36 MiB 0 19 TiB
eu-msg-1.rgw.users.keys 62 64 3.8 KiB
97 3.8 KiB 0 19 TiB
eu-msg-1.rgw.meta 63 64 600 KiB
1.58k 600 KiB 0 19 TiB
eu-msg-1.rgw.buckets.index 64 64 46 MiB
112 46 MiB 0 19 TiB
eu-msg-1.rgw.users.email 65 64 0 B
0 0 B 0 19 TiB
eu-msg-1.rgw.buckets.data 66 64 2.8 TiB
1.14M 2.8 TiB 4.76 19 TiB
eu-msg-1.rgw.buckets.non-ec 67 64 2.2 MiB
353 2.2 MiB 0 19 TiB
default.rgw.control 69 32 0 B
8 0 B 0 19 TiB
default.rgw.data.root 70 32 0 B
0 0 B 0 19 TiB
default.rgw.gc 71 32 0 B
0 0 B 0 19 TiB
default.rgw.log 72 32 0 B
0 0 B 0 19 TiB
default.rgw.users.uid 73 32 0 B
0 0 B 0 19 TiB
fra-1.rgw.control 74 32 0 B
8 0 B 0 19 TiB
fra-1.rgw.meta 75 32 0 B
0 0 B 0 19 TiB
fra-1.rgw.log 76 32 50 B
28 50 B 0 19 TiB
whitespace-again-2021-03-10 77 64 111 MiB
363.94k 111 MiB 0 19 TiB
whitespace-again-2021-03-10_2 78 32 18 KiB
59 18 KiB 0 19 TiB
whitespace-again-2021-03-10_3 79 32 11 KiB
36 11 KiB 0 19 TiB
--
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