how to manually clone a proxmox vm

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step 1: new vm to fill
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in proxmox gui:

-create new vm with a 1GB disk
-set things up however you like (choose bridge, network, ram, etc.)
-this means it has a new MAC address

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step 2: copy the files
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in the proxmox host, command line:

# This should match the file from your old vm. The default proxmox is not "disk#.img".
oldvmdisk=/mnt/mynas/images/100/disk1.img
# This should match the new file created in step 1.
newvmdisk=/mnt/mynas/images/101/disk1.img

qemu-img convert -O raw -p "$oldvmdisk" "$newvmdisk"

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step 3: update the vm OS configuration
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option A) without rebooting the VM
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in the proxmox host, command line:

losetup /dev/loop5 "$newvmdisk"
kpartx -a /dev/loop5

lsblk (figure out which dm-# device is right)
dmdevice=dm-5
mkdir /mnt/newvm
mount /dev/"$dmdevice" /mnt/newvm

vim /mnt/newvm/etc/network/interfaces
    (change IP)

vim /etc/udev/rules.d/70-persistent-net.rules
    (delete or comment all lines)

umount /mnt/newvm ; kpartx -d /dev/loop5 ; losetup -d /dev/loop5

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option B) with rebooting
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in the proxmox host:

-Remove the vm from the bridge, so it has a NIC, but not a network. If you can't figure out how, just remove the whole network device.

-Start the vm

run the commands in the VM:

vim /mnt/newvm/etc/network/interfaces
    (change IP)

vim /etc/udev/rules.d/70-persistent-net.rules
    (delete or comment all lines)

shutdown -h now
    Stop vm (not restart)


in the proxmox host:

-Add back the bridge or network device.

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step 4: start it and test it
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