vzdump: create KVM backups with an specific name

With Proxmox VE, the virtual environment I am using, you can configure KVM backups, but you are going to get dump files like this:

vzdump-qemu-117-YYYY_MM_DD-HH_MM_SS.tgz

The names of these files are not very representative and you should rename them if you want to easily identify your KVM backups in your storage.

I am using this command for KVM backups to get the files with their server names:

#
# vzdump --compress  --snapshot --storage pve-backups --maxfiles 2 --stdout 117 > /mnt/pve/pve-backups/myserver_YYYY_MM_DD.tgz
# 

You can put this command in a cron if you want.

To restore the machine simply run:

#
# qmrestore /mnt/pve/pve-backups/myserver_YYYY_MM_DD.tgz 117
#