[PVE-User] Creating VM with thin provisioning (please help me understand it).

Atila Vasconcelos atilav at lightspeed.ca
Thu Mar 5 23:22:33 CET 2020


I was searching for this piece of information for a long long time!!!

Thank you Gianni, you changed my life! For real! Thanks a lot!


On 2020-03-05 1:32 p.m., Gianni Milo wrote:
> One last thing, normally the guest OS won't release the occupied disk space
> on the host when you delete data within it. For example, let's say that you
> have a VM which is using 30GB of data and then you delete 10GB worth of
> data. That 10GB of space won't be released from the VM ThinLV volume,
> unless you use virtio-scsi as storage controller for the VM and the discard
> option is enabled.
> More on LVM:
> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/logical_volume_manager_administration/index
> G.
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