From f6c8c2e055f88e8ed74ac0c185fc9fbca1e1b775 Mon Sep 17 00:00:00 2001 From: Jeff Cody Date: Fri, 30 Oct 2015 15:25:17 -0400 Subject: qemu-iotests: fix cleanup of background processes Commit 934659c switched the iotests to run qemu and qemu-nbd from a bash subshell, in order to catch segfaults. Unfortunately, this means the process PID cannot be captured via '$!'. We stopped killing qemu and qemu-nbd processes, leaving a lot of orphaned, running qemu processes after executing iotests. Since the process is using exec in the subshell, the PID is the same as the subshell PID. Track these PIDs for cleanup using pidfiles in the $TEST_DIR. Only track the qemu PID, however, if requested - not all usage requires killing the process. Reported-by: John Snow Signed-off-by: Jeff Cody Message-id: 9e4f958b3895b7259b98d845bb46f000ba362869.1446232490.git.jcody@redhat.com [mreitz@redhat.com: Replaced '! -z "..."' by '-n "..."'] Signed-off-by: Max Reitz --- tests/qemu-iotests/058 | 12 ++++++++---- tests/qemu-iotests/common.config | 14 ++++++++++++-- tests/qemu-iotests/common.qemu | 18 ++++++++++++------ tests/qemu-iotests/common.rc | 8 +++++--- 4 files changed, 37 insertions(+), 15 deletions(-) (limited to 'tests') diff --git a/tests/qemu-iotests/058 b/tests/qemu-iotests/058 index f2bdd0bffc..63a6598784 100755 --- a/tests/qemu-iotests/058 +++ b/tests/qemu-iotests/058 @@ -32,11 +32,17 @@ status=1 # failure is the default! nbd_unix_socket=$TEST_DIR/test_qemu_nbd_socket nbd_snapshot_img="nbd:unix:$nbd_unix_socket" +rm -f "${TEST_DIR}/qemu-nbd.pid" _cleanup_nbd() { - if [ -n "$NBD_SNAPSHOT_PID" ]; then - kill "$NBD_SNAPSHOT_PID" + local NBD_SNAPSHOT_PID + if [ -f "${TEST_DIR}/qemu-nbd.pid" ]; then + read NBD_SNAPSHOT_PID < "${TEST_DIR}/qemu-nbd.pid" + rm -f "${TEST_DIR}/qemu-nbd.pid" + if [ -n "$NBD_SNAPSHOT_PID" ]; then + kill "$NBD_SNAPSHOT_PID" + fi fi rm -f "$nbd_unix_socket" } @@ -60,7 +66,6 @@ _export_nbd_snapshot() { _cleanup_nbd $QEMU_NBD -v -t -k "$nbd_unix_socket" "$TEST_IMG" -l $1 & - NBD_SNAPSHOT_PID=$! _wait_for_nbd } @@ -68,7 +73,6 @@ _export_nbd_snapshot1() { _cleanup_nbd $QEMU_NBD -v -t -k "$nbd_unix_socket" "$TEST_IMG" -l snapshot.name=$1 & - NBD_SNAPSHOT_PID=$! _wait_for_nbd } diff --git a/tests/qemu-iotests/common.config b/tests/qemu-iotests/common.config index 596bb2b1e5..be99730bb4 100644 --- a/tests/qemu-iotests/common.config +++ b/tests/qemu-iotests/common.config @@ -44,6 +44,8 @@ export HOST_OPTIONS=${HOST_OPTIONS:=local.config} export CHECK_OPTIONS=${CHECK_OPTIONS:="-g auto"} export PWD=`pwd` +export _QEMU_HANDLE=0 + # $1 = prog to look for, $2* = default pathnames if not found in $PATH set_prog_path() { @@ -105,7 +107,12 @@ fi _qemu_wrapper() { - (exec "$QEMU_PROG" $QEMU_OPTIONS "$@") + ( + if [ -n "${QEMU_NEED_PID}" ]; then + echo $BASHPID > "${TEST_DIR}/qemu-${_QEMU_HANDLE}.pid" + fi + exec "$QEMU_PROG" $QEMU_OPTIONS "$@" + ) } _qemu_img_wrapper() @@ -120,7 +127,10 @@ _qemu_io_wrapper() _qemu_nbd_wrapper() { - (exec "$QEMU_NBD_PROG" $QEMU_NBD_OPTIONS "$@") + ( + echo $BASHPID > "${TEST_DIR}/qemu-nbd.pid" + exec "$QEMU_NBD_PROG" $QEMU_NBD_OPTIONS "$@" + ) } export QEMU=_qemu_wrapper diff --git a/tests/qemu-iotests/common.qemu b/tests/qemu-iotests/common.qemu index e3faa53d22..8bf3969418 100644 --- a/tests/qemu-iotests/common.qemu +++ b/tests/qemu-iotests/common.qemu @@ -30,8 +30,6 @@ QEMU_COMM_TIMEOUT=10 QEMU_FIFO_IN="${TEST_DIR}/qmp-in-$$" QEMU_FIFO_OUT="${TEST_DIR}/qmp-out-$$" -QEMU_PID= -_QEMU_HANDLE=0 QEMU_HANDLE=0 # If bash version is >= 4.1, these will be overwritten and dynamic @@ -153,11 +151,11 @@ function _launch_qemu() mkfifo "${fifo_out}" mkfifo "${fifo_in}" + QEMU_NEED_PID='y'\ ${QEMU} -nographic -serial none ${comm} -machine accel=qtest "${@}" \ >"${fifo_out}" \ 2>&1 \ <"${fifo_in}" & - QEMU_PID[${_QEMU_HANDLE}]=$! if [[ "${BASH_VERSINFO[0]}" -ge "5" || ("${BASH_VERSINFO[0]}" -ge "4" && "${BASH_VERSINFO[1]}" -ge "1") ]] @@ -196,10 +194,18 @@ function _cleanup_qemu() # QEMU_PID[], QEMU_IN[], QEMU_OUT[] all use same indices for i in "${!QEMU_OUT[@]}" do - if [ -z "${wait}" ]; then - kill -KILL ${QEMU_PID[$i]} 2>/dev/null + local QEMU_PID + if [ -f "${TEST_DIR}/qemu-${i}.pid" ]; then + read QEMU_PID < "${TEST_DIR}/qemu-${i}.pid" + rm -f "${TEST_DIR}/qemu-${i}.pid" + if [ -z "${wait}" ] && [ -n "${QEMU_PID}" ]; then + kill -KILL ${QEMU_PID} 2>/dev/null + fi + if [ -n "${QEMU_PID}" ]; then + wait ${QEMU_PID} 2>/dev/null # silent kill + fi fi - wait ${QEMU_PID[$i]} 2>/dev/null # silent kill + if [ -n "${wait}" ]; then cat <&${QEMU_OUT[$i]} | _filter_testdir | _filter_qemu \ | _filter_qemu_io | _filter_qmp diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc index 28e4beac15..4878e99650 100644 --- a/tests/qemu-iotests/common.rc +++ b/tests/qemu-iotests/common.rc @@ -154,7 +154,6 @@ _make_test_img() # Start an NBD server on the image file, which is what we'll be talking to if [ $IMGPROTO = "nbd" ]; then eval "$QEMU_NBD -v -t -b 127.0.0.1 -p 10810 -f $IMGFMT $TEST_IMG_FILE &" - QEMU_NBD_PID=$! sleep 1 # FIXME: qemu-nbd needs to be listening before we continue fi } @@ -175,8 +174,11 @@ _cleanup_test_img() case "$IMGPROTO" in nbd) - if [ -n "$QEMU_NBD_PID" ]; then - kill $QEMU_NBD_PID + if [ -f "${TEST_DIR}/qemu-nbd.pid" ]; then + local QEMU_NBD_PID + read QEMU_NBD_PID < "${TEST_DIR}/qemu-nbd.pid" + kill ${QEMU_NBD_PID} + rm -f "${TEST_DIR}/qemu-nbd.pid" fi rm -f "$TEST_IMG_FILE" ;; -- cgit v1.2.3