[PVE-User] PVE storage layout question.

proxmox-user at mattern.org proxmox-user at mattern.org
Thu Feb 20 21:22:16 CET 2020


Hi,

Am 20.02.20 um 17:54 schrieb Leandro Roggerone:
> Hi guys.
> I have a very old proxmox version (4.X).
> There I have only one partition where I store both vms and isos images.
> Now, I installed pve last version.
Did you reinstall your server? You can update. It's really easy - see 
the wiki.
> After install default process finished I can see two partitions created.
> (LVM and  LVM-thin)
The main difference (on a single server) between LVM and LVM-thin in 
proxmox is that you can't use snapshots with "normal" LVM volumes. You 
have to use LVM-Thin.
> After reading in storage documentation , it is not clear for me what the
> difference is between them.
> Can I use only one partition (like in my old proxmox ver4) ?
Proxmox uses LVM is a blocklevel storage. You can't use is for files 
directly (https://pve.proxmox.com/pve-docs/chapter-pvesm.html). So you 
need another partition/LVM Volume with a filesystem for your ISOs. LVM 
is really flexible. You can create a logical volume with a filesystem 
with the shell and mount it to use it for ISOs, Backup or whatever.
> Any advice regarding storage layout good practice would be appreciated.
Depends on your usage. If possible do some fio tests with different RAID 
levels, stripe sizes, cache settings...
> Currently I have a 5TB Raid5 storage available.
>
> Regards,
> Leandro.
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