Disk Setup

[dark]

Hi all - im just looking for some guidance or a pointer in the right direction.

I have a box with the following physical disks:

80gb
80gb
750gb
750gb

I am trying to achieve the following, but am unsure how to proceed..

1 - Install Proxmox on the first 80gb disk - managed this so far
2 - have the 80gb and one 750gb available to my VM's (KVM)
3 - Use the second 750gb disk for snapshot backups

I am unsure if i need to setup this in Debian, or if i need to edit the proxmox configuration - im coming from FreeBSD so very confused about the Linux setup.

Any hints or tips would be very welcome

 

[udo]

Hi,
i think you know, that the disk without the right raidlevel are not save for production. Anyway...

If you install proxmox on the 80gb disk (e.g. sda), than you have a logical volume for the VMs (pve-data). So you can easy expand this storage with sdb (80GB) and sdc (750GB):

pvcreate /dev/sdb; pvcreate /dev/sdc
vgdisplay pve # look at free
vgextend pve /dev/sdb /dev/sdc
vgdisplay
lvextend /dev/pve/data -L +810G # leave min. 4GB free in vg pve for backup (snapshot)
resize2fs /dev/mapper/pve-data

The backup-disk can you use with an normal filesystem (or lvm and a big lv) which mounted to a directory (e.g. /backup) - see fstab. After that you can define the dir in the storage-gui for backups.

Udo

 

[dark]

Thank you for taking the time to reply.

The information you have provided is very useful , I spent a few hours playing about with LVM last night for the first time, its very powerful and easy to admin.

I will be going for raid1 if this machine turns into a production one, however for now, its more about me learning how to use proxmox and Linux.

Anyways, thanks so much for your time.

Dark

 

[JustaGuy]

I will be going for raid1 if this machine turns into a production one

Hi, I tried to PM you but it seems the feature is disabled in your profile.

I just wanted to mention that while it's not mentioned on the 'Storage Model' page of the PVE Wiki, it's documented all over the forums that Proxmox performs best in a RAID10 configuration.

So if you've got the disk, go that route instead of RAID1 like you mentioned.

I hope so far you're finding this project useful as I have, and welcome to the party!