3dc40c925d
Red Hat periodically updates the qcow2 guest image available for download. This sets the default image name to the latest. Change-Id: Iba3075bbee3b41918d5cd3da9721fcbf98ff3bcd
59 lines
2.3 KiB
Bash
Executable file
59 lines
2.3 KiB
Bash
Executable file
#!/bin/bash
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set -eu
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[ -n "$ARCH" ]
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[ -n "$TARGET_ROOT" ]
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if [ 'amd64' = "$ARCH" ] ; then
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ARCH="x86_64"
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fi
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DIB_RELEASE=${DIB_RELEASE:-latest}
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DIB_CLOUD_IMAGES=${DIB_CLOUD_IMAGES:-http://rhn.redhat.com}
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BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-rhel-guest-image-6-6.5-20131115.0-1.qcow2}
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BASE_IMAGE_TAR=$DIB_RELEASE-rhel-server-$ARCH-latest.tgz
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CACHED_TAR=$DIB_IMAGE_CACHE/$BASE_IMAGE_TAR
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if [ -n "$DIB_OFFLINE" -a -f "$CACHED_TAR" ] ; then
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echo "Not checking freshness of cached $CACHED_TAR."
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else
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echo "Fetching Base Image"
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$TMP_HOOKS_PATH/bin/cache-url $DIB_CLOUD_IMAGES/$BASE_IMAGE_FILE $DIB_IMAGE_CACHE/$BASE_IMAGE_FILE
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if [ ! -f $CACHED_TAR -o \
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$DIB_IMAGE_CACHE/$BASE_IMAGE_FILE -nt $CACHED_TAR ] ; then
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echo "Repacking base image as tarball."
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WORKING=$(mktemp -d)
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EACTION="rm -r $WORKING"
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trap "$EACTION" EXIT
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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 $DIB_IMAGE_CACHE/$BASE_IMAGE_FILE $WORKING/$RAW_FILE
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MAGIC_BIT=p1
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# NOTE: On RHEL, partprobe of /dev/loop0 does not create /dev/loop0p2,
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# while kpartx at least creates /dev/mapper/loop0p2.
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LOOPDEV=$(sudo kpartx -av $WORKING/$RAW_FILE | awk "/loop[0-9]+$MAGIC_BIT/ {print \$3}")
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export LOOPDEV=$LOOPDEV
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echo "Loop device is set to: $LOOPDEV"
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if ! timeout 5 sh -c "while ! [ -e /dev/mapper/$LOOPDEV ]; do sleep 1; done"; then
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echo "Error: Could not find /dev/mapper/$LOOPDEV"
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exit 1
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fi
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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 $DIB_IMAGE_CACHE/$BASE_IMAGE_TAR
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fi
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fi
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# Extract the base image (use --numeric-owner to avoid UID/GID mismatch between
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# image tarball and host OS e.g. when building RHEL image on an openSUSE host)
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sudo tar -C $TARGET_ROOT --numeric-owner -xzf $DIB_IMAGE_CACHE/$BASE_IMAGE_TAR
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if [ -e "$TARGET_ROOT/lost+found" ]; then
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sudo rmdir $TARGET_ROOT/lost+found
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fi
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