[PVE-User] lzo files conundrum

Renato Gallo renato at aster-lab.com
Wed Mar 11 09:07:42 CET 2020


Hello,

Might be I was not clear, I apologize.
it's not that I want both backups to be equal.
Both machines are set up as scsi and have equal storage configuration.
Both machines sit on the same proxmox server.
I would like to know why the backups gigas are so different one from another.

Renato Gallo 



----- Original Message -----
From: "Alwin Antreich" <a.antreich at proxmox.com>
To: "PVE User List" <pve-user at pve.proxmox.com>
Cc: "renato" <renato at aster-lab.com>, "Gaspare Noto" <g.noto at way-interactive.com>
Sent: Wednesday, March 11, 2020 8:55:13 AM
Subject: Re: [PVE-User] lzo files conundrum

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


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