[ovirt-devel] Values of column all_disks_for_vms.actual_size

[Tal Nisan]

Actual size is the size that is actually allocated in the disk, if you
create a thin provisioned 20GB disk for instance its actual size before
installing an OS on it will be 0 bytes, after installing the OS it's
expected to have a value in the actual size

On Fri, Jan 20, 2017 at 7:45 PM, Jakub Niedermertl <jniederm at redhat.com>
wrote:

> Hi Tal,
>
> what describe values in column 'actual_size' of view 'all_disks_for_vms'?
>
> I noticed very strange behavior of values in this column: It's
> * 0 for 'thin-provisioned' disk of VM in cluster 4.1
> * 2147487744 for 'preallocated' 2GB disk of VM in cluster 4.1
> * 0 for 'thin-provisioned' disk of VM in cluster 4.0
> * 0 for 'preallocated' disk of VM in cluster 4.0
> * 0 for disk of template that was created by importing glance image as
> template to 4.0 cluster
> * 200704 for disk of template that was created by importing 12 MB
> glance image as template to 4.1 cluster
> * 0 for disk of template that was created by importing glance image as
> template to 4.0 cluster
> * 0 for disk of template of VM with preallocated disk in 4.1 cluster
> * 0 for disk of template of VM with preallocated disk in 4.0 cluster
>
> How is the value supposed to be computed?
>
> Thanks for explanation
>
> Jakub
>
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