b43c8c4c4e
These comments were left in write_image.sh from the 'teeth-agent' days when these were split into two scripts. I moved the comment into the correct script and clarified what it means. Change-Id: Iccdcd925be5c94d993d8125534264f496de4594f
68 lines
2.4 KiB
Bash
Executable File
68 lines
2.4 KiB
Bash
Executable File
#!/bin/bash
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# Copyright 2013 Rackspace, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# This should work with almost any image that uses MBR partitioning and
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# doesn't already have 3 or more partitions -- or else you'll no longer
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# be able to create extended partitions on the disk.
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log() {
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echo "`basename $0`: $@"
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}
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fail() {
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log "Error $@"
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exit 1
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}
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usage() {
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[[ -z "$1" ]] || echo -e "USAGE ERROR: $@\n"
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echo "`basename $0`: CONFIGDRIVE DEVICE"
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echo " - This script injects CONFIGDRIVE contents as an iso9660"
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echo " filesystem on a partition at the end of DEVICE."
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exit 1
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}
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CONFIGDRIVE="$1"
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DEVICE="$2"
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[[ -f $CONFIGDRIVE ]] || usage "$CONFIGDRIVE (CONFIGDRIVE) is not a regular file"
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[[ -b $DEVICE ]] || usage "$DEVICE (DEVICE) is not a block device"
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# We need to run partprobe to ensure all partitions are visible so the
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# following blkid command returns partitions just imaged to the device
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/sbin/partprobe $DEVICE || fail "running partprobe against $DEVICE"
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# Check for preexisting partition for configdrive
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EXISTING_PARTITION=`/sbin/blkid -l -o device $DEVICE -t LABEL=config-2`
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if [[ $? == 0 ]]; then
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log "Existing configdrive found on ${DEVICE} at ${EXISTING_PARTITION}"
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ISO_PARTITION=$EXISTING_PARTITION
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else
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# Create small partition at the end of the device
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log "Adding configdrive partition to $DEVICE"
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parted -a optimal -s -- $DEVICE mkpart primary ext2 -64MiB -0 || fail "creating configdrive on ${DEVICE}"
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# Find partition we just created
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# Dump all partitions, ignore empty ones, then get the last partition ID
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ISO_PARTITION=`sfdisk --dump $DEVICE | grep -v ' 0,' | tail -n1 | awk '{print $1}'` || fail "finding ISO partition created on ${DEVICE}"
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fi
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# This writes the ISO image to the config drive.
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log "Writing Configdrive contents in $CONFIGDRIVE to $ISO_PARTITION"
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dd if=$CONFIGDRIVE of=$ISO_PARTITION bs=64K oflag=direct || fail "writing Configdrive to ${ISO_PARTITION}"
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log "${DEVICE} imaged successfully!"
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