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16 lines
629 B
Bash
16 lines
629 B
Bash
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#!/bin/bash
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# Transform a raw image disk to gce compatible
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RAWIMAGE="$1"
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GB=$((1024*1024*1024))
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size=$(qemu-img info -f raw --output json "$RAWIMAGE" | gawk 'match($0, /"virtual-size": ([0-9]+),/, val) {print val[1]}')
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# shellcheck disable=SC2004
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ROUNDED_SIZE=$(echo "$size/$GB+1"|bc)
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echo "Resizing raw image from \"$size\"MB to \"$ROUNDED_SIZE\"GB"
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qemu-img resize -f raw "$RAWIMAGE" "$ROUNDED_SIZE"G
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echo "Compressing raw image $RAWIMAGE to $RAWIMAGE.tar.gz"
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tar -c -z --format=oldgnu -f "$RAWIMAGE".tar.gz $RAWIMAGE
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echo "Restoring size to original raw image"
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qemu-img resize -f raw "$RAWIMAGE" --shrink "$size"
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echo "Done"
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