/create-vhd
Created Jan 13, 2017
| #!/bin/bash | |
| # Create an Azure compatible VHD from a VirtualBox VDI | |
| # More info: https://docs.microsoft.com/en-us/azure/virtual-machines/virtual-machines-linux-create-upload-generic#general-linux-installation-notes#resizing-vhds | |
| # And: http://serverfault.com/a/770425 | |
| name=$1 | |
| # Convert the image to raw | |
| qemu-img convert -f vdi -O raw "$name.vdi" image.raw | |
| MB=$((1024*1024)) | |
| # Get the size of the vdi | |
| size=$(qemu-img info -f vdi --output json "$name.vdi" | \ | |
| gawk 'match($0, /"virtual-size": ([0-9]+),/, val) {print val[1]}') | |
| # Calculate the size of the image to the nearest even integer because Azure is crazy | |
| mb=$(($size/$MB)) | |
| echo "Old size: $mb MB" | |
| if [ $((mb%2)) -eq 0 ]; then increment=2; else increment=1; fi | |
| mbincremented=$(($mb + $increment)) | |
| echo "New size: $mbincremented MB" | |
| rounded_size=$((($mbincremented)*$MB)) | |
| echo "Rounded Size = $rounded_size" | |
| # Resize the image to the rounded size | |
| qemu-img resize -f raw image.raw $rounded_size | |
| # Convert the raw image to VHD | |
| qemu-img convert -f raw -O vpc -o subformat=fixed,force_size image.raw "$name.vhd" | |
| rm image.raw |
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