e6608d42da
Fedora's partprobe does not create devices the same way it does on Ubuntu. Instead of using partprobe, this patch uses kpartx, which works on both Fedora and Ubuntu. Change-Id: Iac5cbac083e423425693c8210cd5d058ce4bce72
57 lines
2.1 KiB
Bash
Executable File
57 lines
2.1 KiB
Bash
Executable File
#!/bin/bash
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set -e
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[ -n "$ARCH" ]
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[ -n "$TARGET_ROOT" ]
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if [ 'amd64' = "$ARCH" ] ; then
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ARCH="x86_64"
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fi
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IMG_PATH=~/.cache/image-create
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DIB_CLOUD_IMAGES=${DIB_CLOUD_IMAGES:-http://mattdm.fedorapeople.org/cloud-images/}
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DIB_RELEASE=${DIB_RELEASE:-Fedora18}
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BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-$DIB_RELEASE-Cloud-$ARCH-latest.qcow2}
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BASE_IMAGE_TAR=$DIB_RELEASE-Cloud-$ARCH-latest.tgz
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mkdir -p $IMG_PATH
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# TODO: don't cache forever.
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if [ ! -f $IMG_PATH/$BASE_IMAGE_FILE ] ; then
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echo "Fetching Base Image"
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wget $DIB_CLOUD_IMAGES/$BASE_IMAGE_FILE -O $IMG_PATH/$BASE_IMAGE_FILE.tmp
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mv $IMG_PATH/$BASE_IMAGE_FILE.tmp $IMG_PATH/$BASE_IMAGE_FILE
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fi
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if [ ! -f $IMG_PATH/$BASE_IMAGE_TAR ] ; then
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echo "Repacking base image as tarball."
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WORKING=$(mktemp -d)
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EACTION="rm -r $WORKING"
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trap "$EACTION" EXIT
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echo "Working in $WORKING"
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RAW_FILE=$(basename $BASE_IMAGE_FILE)
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RAW_FILE=${RAW_FILE#.qcow2}.raw
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qemu-img convert -f qcow2 -O raw $IMG_PATH/$BASE_IMAGE_FILE $WORKING/$RAW_FILE
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# WARNING: The mattdm image has the root filesystem on the second
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# partition (p2). If he changes the image the MAGIC_BIT
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# might also need to change.
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MAGIC_BIT=p2
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# XXX: Parsing stdout is dangerous, would like a better way to discover
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# the device used for the image.
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# NOTE: On F17 (parted-3.0-10.fc17.x86_64), partprobe of
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# /dev/loop0 does not create /dev/loop0p2, while kpartx at
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# least creates /dev/mapper/loop0p2.
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LOOPDEV=$(sudo kpartx -avr $WORKING/$RAW_FILE | awk "/loop[0-9]+$MAGIC_BIT/ {print \$3}")
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EACTION="sudo kpartx -d $WORKING/$RAW_FILE;$EACTION"
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trap "$EACTION" EXIT
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mkdir $WORKING/mnt
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sudo mount /dev/mapper/$LOOPDEV $WORKING/mnt
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EACTION="sudo umount -f $WORKING/mnt;$EACTION"
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trap "$EACTION" EXIT
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# Chroot in so that we get the correct uid/gid
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sudo chroot $WORKING/mnt bin/tar -cz . > $WORKING/tmp.tar
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mv $WORKING/tmp.tar $IMG_PATH/$BASE_IMAGE_TAR
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fi
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# Extract the base image
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sudo tar -C $TARGET_ROOT -xzf $IMG_PATH/$BASE_IMAGE_TAR
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sudo rmdir $TARGET_ROOT/lost+found
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