Ah you are right. [root@s3db1 ~]# ceph daemon osd.23 config get bluestore_min_alloc_size_hdd { "bluestore_min_alloc_size_hdd": "65536" } But I also checked how many objects our s3 hold and the numbers just do not add up. There are only 26509200 objects, which would result in around 1TB "waste" if every object would be empty. I think the problem began when I updated the PG count from 1024 to 2048. Could there be an issue where the data is written twice? Am Do., 15. Apr. 2021 um 16:48 Uhr schrieb Amit Ghadge <amitg.b14@gmail.com
:
verify those two parameter values ,bluestore_min_alloc_size_hdd & bluestore_min_alloc_size_sdd, If you are using hdd disk then bluestore_min_alloc_size_hdd are applicable.
On Thu, Apr 15, 2021 at 8:06 PM Boris Behrens <bb@kervyn.de> wrote:
So, I need to live with it? A value of zero leads to use the default? [root@s3db1 ~]# ceph daemon osd.23 config get bluestore_min_alloc_size { "bluestore_min_alloc_size": "0" }
I also checked the fragmentation on the bluestore OSDs and it is around 0.80 - 0.89 on most OSDs. yikes. [root@s3db1 ~]# ceph daemon osd.23 bluestore allocator score block { "fragmentation_rating": 0.85906054329923576 }
The problem I currently have is, that I barely keep up with adding OSD disks.
Am Do., 15. Apr. 2021 um 16:18 Uhr schrieb Amit Ghadge < amitg.b14@gmail.com>:
size_kb_actual are actually bucket object size but on OSD level the bluestore_min_alloc_size default 64KB and SSD are 16KB
https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/3/html/ad...
-AmitG
On Thu, Apr 15, 2021 at 7:29 PM Boris Behrens <bb@kervyn.de> wrote:
Hi,
maybe it is just a problem in my understanding, but it looks like our s3 requires twice the space it should use.
I ran "radosgw-admin bucket stats", and added all "size_kb_actual" values up and divided to TB (/1024/1024/1024). The resulting space is 135,1636733 TB. When I tripple it because of replication I end up with around 405TB which is nearly half the space of what ceph df tells me.
Hope someone can help me.
ceph df shows RAW STORAGE: CLASS SIZE AVAIL USED RAW USED %RAW USED hdd 1009 TiB 189 TiB 820 TiB 820 TiB 81.26 TOTAL 1009 TiB 189 TiB 820 TiB 820 TiB 81.26
POOLS: POOL ID PGS STORED OBJECTS USED %USED MAX AVAIL rbd 0 64 0 B 0 0 B 0 18 TiB .rgw.root 1 64 99 KiB 119 99 KiB 0 18 TiB eu-central-1.rgw.control 2 64 0 B 8 0 B 0 18 TiB eu-central-1.rgw.data.root 3 64 1.0 MiB 3.15k 1.0 MiB 0 18 TiB eu-central-1.rgw.gc 4 64 71 MiB 32 71 MiB 0 18 TiB eu-central-1.rgw.log 5 64 267 MiB 564 267 MiB 0 18 TiB eu-central-1.rgw.users.uid 6 64 2.8 MiB 6.91k 2.8 MiB 0 18 TiB eu-central-1.rgw.users.keys 7 64 263 KiB 6.73k 263 KiB 0 18 TiB eu-central-1.rgw.meta 8 64 384 KiB 1k 384 KiB 0 18 TiB eu-central-1.rgw.users.email 9 64 40 B 1 40 B 0 18 TiB eu-central-1.rgw.buckets.index 10 64 10 GiB 67.61k 10 GiB 0.02 18 TiB eu-central-1.rgw.buckets.data 11 2048 264 TiB 138.31M 264 TiB 83.37 18 TiB eu-central-1.rgw.buckets.non-ec 12 64 297 MiB 11.32k 297 MiB 0 18 TiB eu-central-1.rgw.usage 13 64 536 MiB 32 536 MiB 0 18 TiB eu-msg-1.rgw.control 56 64 0 B 8 0 B 0 18 TiB eu-msg-1.rgw.data.root 57 64 72 KiB 227 72 KiB 0 18 TiB eu-msg-1.rgw.gc 58 64 300 KiB 32 300 KiB 0 18 TiB eu-msg-1.rgw.log 59 64 835 KiB 242 835 KiB 0 18 TiB eu-msg-1.rgw.users.uid 60 64 56 KiB 104 56 KiB 0 18 TiB eu-msg-1.rgw.usage 61 64 37 MiB 25 37 MiB 0 18 TiB eu-msg-1.rgw.users.keys 62 64 3.8 KiB 97 3.8 KiB 0 18 TiB eu-msg-1.rgw.meta 63 64 607 KiB 1.60k 607 KiB 0 18 TiB eu-msg-1.rgw.buckets.index 64 64 71 MiB 119 71 MiB 0 18 TiB eu-msg-1.rgw.users.email 65 64 0 B 0 0 B 0 18 TiB eu-msg-1.rgw.buckets.data 66 64 2.9 TiB 1.16M 2.9 TiB 5.30 18 TiB eu-msg-1.rgw.buckets.non-ec 67 64 2.2 MiB 354 2.2 MiB 0 18 TiB default.rgw.control 69 32 0 B 8 0 B 0 18 TiB default.rgw.data.root 70 32 0 B 0 0 B 0 18 TiB default.rgw.gc 71 32 0 B 0 0 B 0 18 TiB default.rgw.log 72 32 0 B 0 0 B 0 18 TiB default.rgw.users.uid 73 32 0 B 0 0 B 0 18 TiB fra-1.rgw.control 74 32 0 B 8 0 B 0 18 TiB fra-1.rgw.meta 75 32 0 B 0 0 B 0 18 TiB fra-1.rgw.log 76 32 50 B 28 50 B 0 18 TiB
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