#!/bin/bash
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#
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# Script for operators to create formated images.
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# first arg is the size of a disk in GB.
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set -x
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set -o errexit
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if [ "$#" -ne 1 ]; then
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echo "The argument should be the size of a disk in GB"
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exit 2
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fi
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PROJECT=android-treehugger
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ZONE=us-central1-f
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DISK_NAME="extradisk-instance-${1}gb"
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IMAGE_NAME="extradisk-image-${1}gb"
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DEV_FILE="/dev/sdc"
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gcloud compute disks create "${DISK_NAME}" --zone=${ZONE} --project=${PROJECT} --size="${1}GB"
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gcloud compute instances attach-disk instance-disk-creation --disk "${DISK_NAME}" --zone=${ZONE} --project=${PROJECT}
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gcloud compute ssh instance-disk-creation --zone=${ZONE} --project=${PROJECT} --command "sudo mkfs.ext4 -F ${DEV_FILE}"
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gcloud compute ssh instance-disk-creation --zone=${ZONE} --project=${PROJECT} --command "sudo mount -o discard,defaults ${DEV_FILE} /mnt"
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gcloud compute ssh instance-disk-creation --zone=${ZONE} --project=${PROJECT} --command "ls /mnt"
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gcloud compute ssh instance-disk-creation --zone=${ZONE} --project=${PROJECT} --command "sudo umount /mnt"
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gcloud compute instances detach-disk instance-disk-creation --disk "${DISK_NAME}" --zone=${ZONE} --project=${PROJECT}
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gcloud compute images create "${IMAGE_NAME}" --source-disk-zone=${ZONE} --source-disk "${DISK_NAME}" --project=${PROJECT}
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gcloud compute disks delete "${DISK_NAME}" --zone=${ZONE} --project=${PROJECT}
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echo "Done image ${IMAGE_NAME} is ready."
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