Re: Disk usage

[Maxence Sartiaux <contact@xxxxxxx>]

Reply to myself !

In fact i had an overlay in top of my ssd pool & hdd pool.

The guy who installed this ceph cluster created some objects in the hdd pool but didn't removed them before applying the overlay,

so the objects was not listed in the rbd ls but when i removed the overlay a rbd -p rbd ls showed a bunch of disk, after remove them and reapplying the overlay my free space was back !

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From: "Maxence Sartiaux" <contact@xxxxxxx>
To: "ceph-users" <ceph-users@xxxxxxxx>
Sent: Friday, March 11, 2016 12:24:22 PM
Subject: Disk usage

Hello, 

I've a little problem or i don't understand something

A ceph df return me a used total of ~5To but a rbd ls return me some object with a total of ~1.1To where is the other ~4To used ?

$ rbd ls -l

NAME SIZE PARENT FMT PROT LOCK
vm-105-disk-1 51200M 2
vm-105-disk-2 102400M 2
volume-45cde9d2-3a14-4138-b51f-2f3077ebcbb2 51200M 2
volume-45cde9d2-3a14-4138-b51f-2f3077ebcbb2@volume-ddedca3f-82aa-4cae-ae10-91c726bc2f65.clone_snap 51200M 2 yes
volume-75dc06e1-aa27-49aa-9101-333d92e9d291 120G 2
volume-bf5cc58c-4674-4ecc-b434-c814d3ce1f5c 500G 2
volume-ddedca3f-82aa-4cae-ae10-91c726bc2f65 51200M rbd/volume-45cde9d2-3a14-4138-b51f-2f3077ebcbb2@volume-ddedca3f-82aa-4cae-ae10-91c726bc2f65.clone_snap 2
volume-f4fe4023-f80a-4b4d-a232-49787a0e2101 120G 2

TOTAL : 1047.2 Go

$ ceph df

GLOBAL:
SIZE AVAIL RAW USED %RAW USED
37867G 27457G 10409G 27.49
POOLS:
NAME ID USED %USED MAX AVAIL OBJECTS
rbd 1 4630G 12.23 11653G 1196797
ssd 2 546G 1.44 1599G 3212442

$ ceph pg stat

v364130: 3600 pgs: 3599 active+clean, 1 active+clean+scrubbing+deep; 5176 GB data, 10409 GB used, 27457 GB / 37867 GB avail; 68 B/s wr, 0 op/s

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