yes, but:
# rbd showmapped
id pool image snap device
0 rbd nfs1 - /dev/rbd0
1 rbd nfs2 - /dev/rbd1
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
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 <ceph@xxxxxxxxxxxxxx> 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 <mgebai@xxxxxxx> 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:solarflow99@xxxxxxxxx]
>>> Sent: 27 February 2019 22:55
>>> To: Ceph Users
>>> Subject: 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@xxxxxxxxxxxxxx
>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>>
>>
>
>
>
> _______________________________________________
> ceph-users mailing list
> ceph-users@xxxxxxxxxxxxxx
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>
_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
_______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
