Leave 3 last snapshots and delete the rest via CLI

[vagner.oliveira]

Hello everyone, I would like a script to scan the snapshots created and leave only the last 3 of each VM. I'm seeing the qm delsnapshot command, but I believe I have to use it together with another function for all the lists I want to delete.
Thank you all!

 

[Dunuin]

cv4pve-autosnap can do that: https://github.com/Corsinvest/cv4pve-autosnap

Edit: Not sure if it fits your needs. Looks like it only check snapshots matching its naming scheme.

 

[vagner.oliveira]

Thank you, I will check

 

[vagner.oliveira]

Reactivating the topic, I managed to make the backup script this way, I know it's very basic, and I'd like people's help to make it more automatic.


Basically I manually take a snapshot of each VM by assigning the current date.

# declare snapshot variable and set today's date
export data=$(date +"%d_%m_%y")

# snapshot VM 100
export vmid=100
pvesh create /nodes/qv3wse9z72/qemu/$vmid/snapshot --snapname auto_$data

# snapshot VM 102
export vmid=102
pvesh create /nodes/qv3wse9z72/qemu/$vmid/snapshot --snapname auto_$data

# snapshot VM 103
export vmid=103
pvesh create /nodes/qv3wse9z72/qemu/$vmid/snapshot --snapname auto_$data

# snapshot VM 104
export vmid=104
pvesh create /nodes/qv3wse9z72/qemu/$vmid/snapshot --snapname auto_$data

In this more grotesque script, I do a manual check of the last 7 days and leave the 3 most recent and delete the rest.

# declare snapshot variable and set today's date
export data=$(date +"%d_%m_%y")

# loop that takes the last 7 to 3 days and deletes the snapshotsfor i in {3..7}
        do
        ontem=$(date +%d_%m_%y -d "$data - $i day")

        # snapshot VM 100
        export vmid=100
        pvesh delete /nodes/qv3wse9z72/qemu/$vmid/snapshot/auto_$ontem

        # snapshot VM 102
        export vmid=102
        pvesh delete /nodes/qv3wse9z72/qemu/$vmid/snapshot/auto_$ontem

        # snapshot VM 103
        export vmid=103
        pvesh delete /nodes/qv3wse9z72/qemu/$vmid/snapshot/auto_$ontem

        # snapshot VM 104
        export vmid=104
        pvesh delete /nodes/qv3wse9z72/qemu/$vmid/snapshot/auto_$ontem

        #end of the snapshot delete loop
        done

The purpose of this post is to help those looking for a script and those who know how to improve this one I started using the tools that are already included in proxmox.

 

[Dunuin]

So you basically just do what https://github.com/Corsinvest/cv4pve-autosnap is alredy doing. Create snapshots of VMs and then pruning them.

 

[vagner.oliveira]

The difference is that with my code it is not necessary to install anything on Proxomox, which, in my opinion, I think is better. The point that I posted my script is to help those who want to do it the same way I did, without installing anything and, if possible, improve this script.

 

[Dunuin]

I don't see the point. You also don't have to install cv4pve-autosnap. You just download and unzip it. Makes no difference to me if I would run a script I found in some forums or a script from some github repo. In both cases I should have to look at the code and see what it does, as someone else wrote that script.

Difference is just that cv4pve already got alot of features implemented with years of work put into it, its running for years on alot of PVE nodes so its well tested to not screw something up.