[PVE-User] lzo files conundrum

[Alwin Antreich]

Hello Renato,

On Wed, Mar 11, 2020 at 07:35:21AM +0100, Renato Gallo via pve-user wrote:
> Date: Wed, 11 Mar 2020 07:35:21 +0100 (CET)
> From: Renato Gallo <renato at aster-lab.com>
> To: pve-user at pve.proxmox.com
> Cc: g noto <g.noto at way-interactive.com>
> Subject: lzo files conundrum
> X-Mailer: Zimbra 8.8.15_GA_3829 (ZimbraWebClient - FF68
>  (Linux)/8.8.15_GA_3829)
> 
> Hello, 
> 
> we have two machines same system 100 Gb of virtual disk both have the disks on a zfspool. 
> from the df -h point of view the disks use is quite similar. 
> we backup those machine regularly during the weekend using the scheduled backup of proxmox from the datastore menu. 
> we cannot understand why one machine have a .lzo file of 9.something gigas and the other has a backup .lzo file of around 40 gigas. 
> can you explain this to us ? 
Possibly thin-provisioning.

In the storage definition the _Thin provision_ needs to be set, to
create thin-provisioned zVOLs from the start. And OFC, you will need to
have the VM disks setup with SCSI and discard on to run a TRIM inside
the VM.

--
Cheers,
Alwin