问题
Why is my ceph cluster value(964G) of raw used in global section far higher than that(244G) of used in pools section
[en@ceph01 ~]$ sudo ceph df
GLOBAL:
SIZE AVAIL RAW USED %RAW USED
6.00TiB 5.06TiB 964GiB 15.68
POOLS:
NAME ID USED %USED MAX AVAIL OBJECTS
.rgw.root 1 1.09KiB 0 1.56TiB 4
default.rgw.control 2 0B 0 1.56TiB 8
default.rgw.meta 3 0B 0 1.56TiB 0
default.rgw.log 4 0B 0 1.56TiB 207
cephfs_data 5 244GiB 9.22 2.34TiB 4829661
cephfs_meta 6 168MiB 0 2.34TiB 4160
[en@ceph01 ~]$ sudo ceph osd df
ID CLASS WEIGHT REWEIGHT SIZE USE DATA OMAP META AVAIL %USE VAR PGS
0 hdd 2.00000 1.00000 2.00TiB 331GiB 326GiB 1.64GiB 3.38GiB 1.68TiB 16.17 1.03 77
1 hdd 2.00000 1.00000 2.00TiB 346GiB 341GiB 1.69GiB 3.51GiB 1.66TiB 16.90 1.08 78
2 hdd 2.00000 1.00000 2.00TiB 286GiB 282GiB 1.31GiB 2.96GiB 1.72TiB 13.97 0.89 69
TOTAL 6.00TiB 964GiB 949GiB 4.64GiB 9.86GiB 5.06TiB 15.68
MIN/MAX VAR: 0.89/1.08 STDDEV: 1.24
info about ceph cluster:
>pool 5 'cephfs_data' replicated size 2 min_size 2 crush_rule 0 object_hash rjenkins pg_num 32 pgp_num 32 last_change 33 flags hashpspool stripe_width 0 application cephfs..
>pool 6 'cephfs_meta' replicated size 2min_size 2 crush_rule 0 object_hash rjenkins pg_num 32 pgp_num 32 last_change 31 flags hashpspool stripe_width 0 application cephfs
> max_osd 3
回答1:
RAW USED has internal overhead against pool usage.
RAW USED: The amount of raw storage consumed by user data, internal overhead, or reserved capacity.
https://docs.ceph.com/docs/master/rados/operations/monitoring/#checking-a-cluster-s-usage-stats
来源:https://stackoverflow.com/questions/63239473/why-is-my-ceph-cluster-value964g-of-raw-used-in-global-secion-far-higher-than