I think the command you are looking for is 'rbd du' example
rbd du rbd/myimagename ________________________________ From: ceph-users <ceph-users-boun...@lists.ceph.com> on behalf of solarflow99 <solarflo...@gmail.com> Sent: Thursday, February 28, 2019 5:31 PM To: Jack Cc: Ceph Users Subject: Re: [ceph-users] rbd space usage yes, but: # rbd showmapped id pool image snap device 0 rbd nfs1 - /dev/rbd0 1 rbd nfs2 - /dev/rbd1 # df -h Filesystem Size Used Avail Use% Mounted on /dev/rbd0 8.0T 4.8T 3.3T 60% /mnt/nfsroot/rbd0 /dev/rbd1 9.8T 34M 9.8T 1% /mnt/nfsroot/rbd1 only 5T is taken up On Thu, Feb 28, 2019 at 2:26 PM Jack <c...@jack.fr.eu.org<mailto:c...@jack.fr.eu.org>> wrote: Are not you using 3-replicas pool ? (15745GB + 955GB + 1595M) * 3 ~= 51157G (there is overhead involved) Best regards, On 02/28/2019 11:09 PM, solarflow99 wrote: > thanks, I still can't understand whats taking up all the space 27.75 > > On Thu, Feb 28, 2019 at 7:18 AM Mohamad Gebai > <mge...@suse.de<mailto:mge...@suse.de>> wrote: > >> On 2/27/19 4:57 PM, Marc Roos wrote: >>> They are 'thin provisioned' meaning if you create a 10GB rbd, it does >>> not use 10GB at the start. (afaik) >> >> You can use 'rbd -p rbd du' to see how much of these devices is >> provisioned and see if it's coherent. >> >> Mohamad >> >>> >>> >>> -----Original Message----- >>> From: solarflow99 >>> [mailto:solarflo...@gmail.com<mailto:solarflo...@gmail.com>] >>> Sent: 27 February 2019 22:55 >>> To: Ceph Users >>> Subject: [ceph-users] rbd space usage >>> >>> using ceph df it looks as if RBD images can use the total free space >>> available of the pool it belongs to, 8.54% yet I know they are created >>> with a --size parameter and thats what determines the actual space. I >>> can't understand the difference i'm seeing, only 5T is being used but >>> ceph df shows 51T: >>> >>> >>> /dev/rbd0 8.0T 4.8T 3.3T 60% /mnt/nfsroot/rbd0 >>> /dev/rbd1 9.8T 34M 9.8T 1% /mnt/nfsroot/rbd1 >>> >>> >>> >>> # ceph df >>> GLOBAL: >>> SIZE AVAIL RAW USED %RAW USED >>> 180T 130T 51157G 27.75 >>> POOLS: >>> NAME ID USED %USED MAX AVAIL >>> OBJECTS >>> rbd 0 15745G 8.54 39999G >>> 4043495 >>> cephfs_data 1 0 0 39999G >>> 0 >>> cephfs_metadata 2 1962 0 39999G >>> 20 >>> spider_stage 9 1595M 0 39999G 47835 >>> spider 10 955G 0.52 39999G >>> 42541237 >>> >>> >>> >>> >>> _______________________________________________ >>> ceph-users mailing list >>> ceph-users@lists.ceph.com<mailto:ceph-users@lists.ceph.com> >>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> >> > > > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com<mailto:ceph-users@lists.ceph.com> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com<mailto:ceph-users@lists.ceph.com> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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