[Users] actual disk size of vm via api

[Gadi Ickowicz]

Hi,

There are 2 different ways to create a vm from a template:
* thin
* clone

If you create a vm that is a thin-copy of a template, it works like a snapshot, creating a new volume on top of the template's disk.
If you create a vm that is a full clone then you clone the whole disk image.

did you created a thin-copy of the template?

Gadi Ickowicz

----- Original Message -----
From: "Sven Kieske" <S.Kieske at mittwald.de>
To: "Users at ovirt.org List" <Users at ovirt.org>
Sent: Wednesday, February 12, 2014 5:57:28 PM
Subject: [Users] actual disk size of vm via api

Hi,

I got a question regarding the reported actual disk size
of a vm.

you can obtain this value fine via api:

https://your_engine/api/vms/{id}/disks/

however, if the vm is cloned from a template

this disk size does not seem to show the
actual size of the whole disk but instead
the difference from the actual template size.

is this a bug or a feature?
I would like to obtain the "real" size.

e.g. I have a template with 50GB (thin provisioned)
the actual size of this template is 1,5 GB

I clone a vm from this template, the actual size
which gets reported via api is about 8 MB (stuff that
changes from the template).

So I can not obtain the complete used size of the vm.

This was tested under ovirt 3.3.2
-- 
Mit freundlichen Grüßen / Regards

Sven Kieske

Systemadministrator
Mittwald CM Service GmbH & Co. KG
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T: +49-5772-293-100
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Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen
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