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vm:proxmox:ceph:db:usage [2023/05/31 09:29]
niziak created
vm:proxmox:ceph:db:usage [2024/01/18 16:01] (current)
niziak
Line 31: Line 31:
 <code bash> <code bash>
 ceph daemon osd.6 bluefs stats ceph daemon osd.6 bluefs stats
 +ceph tell osd.\* bluefs stats
 </​code>​ </​code>​
  
Line 59: Line 60:
 On 2nd machine, there is 2.9 GB placed onto DB and 502MB of DB data is placed on SLOW device ! On 2nd machine, there is 2.9 GB placed onto DB and 502MB of DB data is placed on SLOW device !
  
 +Compacting helps a bit:
 +<code bash>
 +ceph tell osd.<​osdid>​ compact
 +# or for all osds
 +ceph tell osd.\* compact
 +</​code>​
 +
 +<​code>​
 +{
 +  "​db_total_bytes":​ 4294959104,
 +  "​db_used_bytes":​ 2881486848
 +}
 +
 +Usage matrix:
 +DEV/​LEV ​    ​WAL ​        ​DB ​         SLOW        *           ​* ​          ​REAL ​       FILES       
 +LOG         0 B         180 GiB     15 GiB      0 B         0 B         3.7 MiB     ​1 ​          
 +WAL         0 B         90 MiB      24 MiB      0 B         0 B         109 MiB     ​9 ​          
 +DB          0 B         2.6 GiB     319 MiB     0 B         0 B         2.9 GiB     ​55 ​         ​
 +SLOW        0 B         0 B         0 B         0 B         0 B         0 B         ​0 ​          
 +TOTALS ​     0 B         183 GiB     15 GiB      0 B         0 B         0 B         ​65 ​         ​
 +</​code>​
 +
 +<code bash>
 +ceph osd set noout
 +systemctl stop ceph.osd.target
 +ceph-bluestore-tool fsck --path /​var/​lib/​ceph/​osd/​ceph-6
 +</​code>​