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Date: Wed, 08 Sep 2021 11:25:58 +0200
From: nada <nada@verdnatura.es>
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Subject: Re: [PVE-User] VM storage and replication
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hi Alex
in case you have a limited budget now
you may do backups local backups but it is not recommended by some cheap
NAS ASAP
temporal solution:
1. create some filesystem LVM/ext4 @node1 and mount at /mnt/backup
2. install NFS server @node1 and export /mnt/backup to node2
3. install NFS client @node2 and create mountpoint /mnt/backup
4. edit fstab @node2 example
node1:/mnt/backup /mnt/backup nfs
defaults,noatime,bg 0 2
5. mount /mnt/backup
6. add directory to your proxmox storage via webGUI
or add to /etc/pve/storage.cfg example
dir: backup
path /mnt/backup
content vztmpl,backup,iso
after this you will have backups accessible at both nodes
hope it will help you
Nada
On 2021-09-08 10:05, Alex K wrote:
> Hi all,
>
> I have setup a dual server setup, with latest proxmox v7.x. Each host
> with
> its own local storage. No shared storage (CEPH, GlusterFS).
>
> I understand I can have VMs hosted on top LVM with qcow2 disk images or
> on
> top thin LVM as raw thin LVM volumes. On both cases I still keep the
> option
> to be able to perform VM backups. Which one is the preferred way
> according
> to your experience? I will try to do some quick tests on the IO
> performance
> between the two.
>
> Also, I was thinking to replicate the VMs from one host to the other. I
> understand that for the Proxmox integrated replication feature I need
> ZFS
> backed storage. As I am not much into ZFS, although I really enjoy
> FreeNAS
> and its great features and will definitely look into it later, I was
> thinking to prepare a custom script that would snapshot the LVM volumes
> where the VM images reside and sync the VM disks from one host to the
> other, using rsync, just for a local copy of them. Of course I will
> take
> care to have an external media also to periodically export the VMs for
> backup purposes, though I would like to have a local copy of the VM
> disk
> images at the other host, readily available in case I face issues with
> the
> external media or one of the hosts. What do you think about this
> approach?
> Am I missing some other feature or better approach?
>
> Regrading the sync/replication of the VMs between the hosts (without
> ZFS),
> I was thinking also to have a dedicated local LVM volume for these
> periodic
> backup jobs configured within Proxmox and then the custom script to
> just
> rsync these backup images between the two hosts. This seems a simple
> one
> though it increases the storage requirements, while with the previous
> approach with the custom script, the script would snapshot, sync to the
> other side and remove the snapshot without keeping a redundant local
> copy
> of the disk image in the same host.
>
> Sorry for the long read.
> Appreciate any feedback.
>
> Alex
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