ceph/qa/workunits/rbd/rbd-nbd.sh
Mykola Golub cf5649047f tests: improve rbd-nbd tests
- cleanup on a test failure;
- minimize interference with other processes (tests) that are
  run concurrently;
- use xmlstarlet when parsing rbd output;
- add exit status test.

Signed-off-by: Mykola Golub <mgolub@mirantis.com>
2016-01-13 13:07:42 +02:00

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#!/bin/bash -ex
. $(dirname $0)/../ceph-helpers.sh
POOL=rbd
IMAGE=testrbdnbd$$
SUDO=sudo
SIZE=64
DATA=
DEV=
setup()
{
trap cleanup INT TERM EXIT
TEMPDIR=`mktemp -d`
DATA=${TEMPDIR}/data
dd if=/dev/urandom of=${DATA} bs=1M count=${SIZE}
rbd --dest-pool ${POOL} --no-progress import ${DATA} ${IMAGE}
if [ `id -u` = 0 ]
then
SUDO=
fi
}
function cleanup()
{
set +e
rm -Rf ${TMPDIR}
if [ -n "${DEV}" ]
then
${SUDO} rbd-nbd unmap ${DEV}
fi
if rbd -p ${POOL} status ${IMAGE} 2>/dev/null; then
for s in 0.1 0.2 0.4 0.8 1.6 3.2 6.4 12.8; do
sleep $s
rbd -p ${POOL} status ${IMAGE} | grep 'Watchers: none' && break
done
rbd -p ${POOL} remove ${IMAGE}
fi
}
function expect_false()
{
if "$@"; then return 1; else return 0; fi
}
#
# main
#
setup
# exit status test
expect_false rbd-nbd
expect_false rbd-nbd INVALIDCMD
if [ `id -u` -ne 0 ]
then
expect_false rbd-nbd map ${IMAGE}
fi
expect_false ${SUDO} rbd-nbd map INVALIDIMAGE
expect_false ${SUDO} rbd-nbd --device INVALIDDEV map ${IMAGE}
# map test using the first unused device
DEV=`${SUDO} rbd-nbd map ${POOL}/${IMAGE}`
${SUDO} rbd-nbd list-mapped | grep "^${DEV}$"
# map test specifying the device
expect_false ${SUDO} rbd-nbd --device ${DEV} map ${POOL}/${IMAGE}
dev1=${DEV}
${SUDO} rbd-nbd unmap ${DEV}
${SUDO} rbd-nbd list-mapped | expect_false grep "^${DEV}$"
DEV=
# XXX: race possible when the device is reused by other process
DEV=`${SUDO} rbd-nbd --device ${dev1} map ${POOL}/${IMAGE}`
[ "${DEV}" = "${dev1}" ]
${SUDO} rbd-nbd list-mapped | grep "^${DEV}$"
#read test
[ "`dd if=${DATA} bs=1M | md5sum`" = "`${SUDO} dd if=${DEV} bs=1M | md5sum`" ]
#write test
dd if=/dev/urandom of=${DATA} bs=1M count=${SIZE}
${SUDO} dd if=${DATA} of=${DEV} bs=1M
sync
[ "`dd if=${DATA} bs=1M | md5sum`" = "`rbd -p ${POOL} --no-progress export ${IMAGE} - | md5sum`" ]
#trim test
provisioned=`rbd -p ${POOL} --format xml du ${IMAGE} |
$XMLSTARLET sel -t -m "//stats/images/image/provisioned_size" -v .`
used=`rbd -p ${POOL} --format xml du ${IMAGE} |
$XMLSTARLET sel -t -m "//stats/images/image/used_size" -v .`
[ "${used}" -eq "${provisioned}" ]
${SUDO} mkfs.ext4 -E discard ${DEV} # better idea?
sync
provisioned=`rbd -p ${POOL} --format xml du ${IMAGE} |
$XMLSTARLET sel -t -m "//stats/images/image/provisioned_size" -v .`
used=`rbd -p ${POOL} --format xml du ${IMAGE} |
$XMLSTARLET sel -t -m "//stats/images/image/used_size" -v .`
[ "${used}" -lt "${provisioned}" ]
echo OK