[ceph-users] Real disk usage of clone images
jdillama at redhat.com
Sat Oct 7 04:22:33 PDT 2017
The "rbd du" command will calculate how much space a clone is using,
as well as individual snapshots.
$ rbd du my-pool
NAME PROVISIONED USED
clone at 1 10G 512M
clone at 2 10G 64M
clone 10G 512M
parent at 1 10G 1G
parent 10G 0
<TOTAL> 20G 2.06G
On Sat, Oct 7, 2017 at 3:33 AM, Josy <josy at colossuscloudtech.com> wrote:
> Not sure if this is a good/valid question.
> I have deployed a lot of VMs in a ceph cluster that were cloned from an
> original rbd image.
> I want to see how much of the original image is a new VM (cloned image)
> using. Is there any command to get such details?
> $ rbd info cvm/f6d058e73ab4a0e1262b3140731b4980-1
> rbd image 'f6d058e73ab4a0e1262b3140731b4980-1':
> size 61440 MB in 15360 objects
> order 22 (4096 kB objects)
> block_name_prefix: rbd_data.a2f03d1b58ba
> format: 2
> features: layering
> create_timestamp: Fri Oct 6 19:20:53 2017
> ostemplates/windows-81-x64-20171004 at snap_windows-81-x64-20171004
> overlap: 50000 MB
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