79790171bc
partx -u $DEVICE doesn't work in some cases, but partprobe $DEVICE fails in virtual environments (like devstack). For now, run both commands and ignore partprobe failures. Moving forward, this shell should be factored into python and share code with the other partition-modifying code added this cycle. Change-Id: I7e4c010e260be2a23dcc894bc0c1b30aea949084 Partial-bug: 1433812
74 lines
2.7 KiB
Bash
Executable File
74 lines
2.7 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 partx -u 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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partx -u $DEVICE || fail "running partx -u $DEVICE"
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# todo(jayf): partx -u doesn't work in all cases, but partprobe fails in
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# devstack. We run both commands now as a temporary workaround for bug 1433812
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# long term, this should all be refactored into python and share code with
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# the other partition-modifying code in the agent.
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partprobe $DEVICE || true
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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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