55 lines
1.7 KiB
Bash
Executable File
55 lines
1.7 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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set -e
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log() {
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echo "`basename $0`: $@"
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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`: IMAGEFILE DEVICE"
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echo " - This script images DEVICE with IMAGEFILE"
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exit 1
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}
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IMAGEFILE="$1"
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DEVICE="$2"
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[[ -f $IMAGEFILE ]] || usage "$IMAGEFILE (IMAGEFILE) is not a file"
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[[ -b $DEVICE ]] || usage "$DEVICE (DEVICE) is not a block device"
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# In production this will be replaced with secure erasing the drives
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# For now we need to ensure there aren't any old (GPT) partitions on the drive
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log "Erasing existing GPT and MBR data structures from ${DEVICE}"
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# NOTE(gfidente): GPT uses 33*512 sectors, this is an attempt to avoid bug:
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# https://bugs.launchpad.net/ironic-python-agent/+bug/1737556
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DEVICE_SECTORS_COUNT=`blockdev --getsz $DEVICE`
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dd bs=512 if=/dev/zero of=$DEVICE count=33
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dd bs=512 if=/dev/zero of=$DEVICE count=33 seek=$((${DEVICE_SECTORS_COUNT} - 33))
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sgdisk -Z $DEVICE
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log "Imaging $IMAGEFILE to $DEVICE"
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# limit the memory usage for qemu-img to 2 GiB
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ulimit -v 2097152
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qemu-img convert -t directsync -O host_device $IMAGEFILE $DEVICE
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sync
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log "${DEVICE} imaged successfully!"
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