[PVE-User] PVE storage layout question.

Leandro Roggerone leandro at tecnetmza.com.ar
Fri Feb 21 13:51:02 CET 2020


Hi guys , thanks for the response.
You mean that both partitions are  usefulls and are needed.
Mi concern is to create a layout at the install moment and after some time
realize that some partition is too big ot to small.
So , my idea is:
Designate  1Tb  for LVM.
Designate 2TB for LVM-thin.
Left 2TB for future use:

So, In the future is it possible to modify partitions size without any
risk?

Other:
Can  I  add a Raid 1 with 2 ssd hard disk on remaining empty slots later or
do I need to have them installed at the proxmox install moment?
Thanks!!!!
Leandro.


El jue., 20 feb. 2020 a las 17:22, <proxmox-user at mattern.org> escribió:

> 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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> > pve-user at pve.proxmox.com
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