diff options
Diffstat (limited to 'ctdb/tests/UNIT/eventscripts/scripts/debug_locks.sh')
| -rw-r--r-- | ctdb/tests/UNIT/eventscripts/scripts/debug_locks.sh | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/ctdb/tests/UNIT/eventscripts/scripts/debug_locks.sh b/ctdb/tests/UNIT/eventscripts/scripts/debug_locks.sh new file mode 100644 index 0000000..b0cd039 --- /dev/null +++ b/ctdb/tests/UNIT/eventscripts/scripts/debug_locks.sh @@ -0,0 +1,272 @@ +setup() +{ + setup_dbdir +} + +result_filter() +{ + sed -e 's|\( of debug locks PID=\)[0-9]*|\1PID|' +} + +tdb_path() +{ + echo "${CTDB_DBDIR}/${1}.${FAKE_CTDB_PNN}" +} + +fake_file_id() +{ + _path="$1" + + echo "$FAKE_FILE_ID_MAP" | + awk -v path="$_path" '$1 == path { print $2 }' +} + +fake_stack_trace() +{ + _pid="$1" + _command="${2:-smbd}" + _state="$3" + + echo "----- Stack trace for PID=${_pid} -----" + + case "$_state" in + D*) + cat <<EOF +----- Process in D state, printing kernel stack only +[<ffffffff87654321>] fake_stack_trace_for_pid_${_pid}/stack+0x0/0xff +EOF + ;; + *) + cat <<EOF +Thread 1 (Thread 0x7f688fbfb180 (LWP ${_pid}) "${_command}"): +#0 0x00007f688ff7a076 in open (FAKE ARGS...) at FAKE PLACE +.... +#3 0x000055cd368ead72 in main (argc=<optimized out>, argv=<optimized out>) at ${_command}.c +EOF + ;; + esac +} + +do_test() +{ + _holder_scope="$1" + _holder_state="$2" + _helper_scope="$3" + _lock_type="${4:-FCNTL}" + + _lock_helper_pid="4132032" + + FAKE_PS_MAP=$( + cat <<EOF +1234567 ctdbd S +2345678 smbd S +4131931 smbd ${_holder_state} +${_lock_helper_pid} ctdb_lock_helpe S+ +EOF + ) + export FAKE_PS_MAP + + FAKE_FILE_ID_MAP="" + _tdbs="locking.tdb brlock.tdb test.tdb foo.tdb" + _n=1 + for _t in $_tdbs; do + _path=$(tdb_path "$_t") + _inode=$((19690818 + _n)) + FAKE_FILE_ID_MAP=$( + cat <<EOF +${FAKE_FILE_ID_MAP} +${_path} 103:04:${_inode} +EOF + ) + rm -f "$_path" + touch "$_path" + _n=$((_n + 1)) + done + export FAKE_FILE_ID_MAP + + _path=$(tdb_path "locking.tdb") + _locking_tdb_id=$(fake_file_id "$_path") + + _t=$( + cat <<EOF +POSIX ADVISORY WRITE 3769740 103:04:24380821 1073741826 1073742335 +FLOCK ADVISORY WRITE 3632524 103:02:1059266 0 EOF +FLOCK ADVISORY WRITE 4060231 00:17:17184 0 EOF +POSIX ADVISORY READ 1234567 ${_locking_tdb_id} 4 4 +POSIX ADVISORY WRITE 59178 103:04:24380821 1073741826 1073742335 +POSIX ADVISORY READ 4427 103:04:22152234 1073741826 1073742335 +POSIX ADVISORY WRITE 4427 103:04:22152494 0 EOF +POSIX ADVISORY READ 4427 103:04:22152702 1073741826 1073742335 +EOF + ) + + _holder_lock="" + if [ "$_holder_scope" = "DB" ]; then + if [ "$_lock_type" = "FCNTL" ]; then + _holder_lock=$( + cat <<EOF +POSIX ADVISORY WRITE 4131931 ${_locking_tdb_id} 168 EOF +EOF + ) + elif [ "$_lock_type" = "MUTEX" ]; then + _holder_lock=$( + cat <<EOF +POSIX ADVISORY WRITE 4131931 ${_locking_tdb_id} 400172 EOF +EOF + ) + fi + elif [ "$_holder_scope" = "RECORD" ] && + [ "$_lock_type" = "FCNTL" ]; then + _holder_lock=$( + cat <<EOF +POSIX ADVISORY WRITE 2345678 ${_locking_tdb_id} 112736 112736 +POSIX ADVISORY WRITE 4131931 ${_locking_tdb_id} 225472 225472 +EOF + ) + fi + + _t=$( + cat <<EOF +$_t +$_holder_lock +EOF + ) + + _helper_lock="" + if [ "$_helper_scope" = "DB" ] && + [ "$_lock_type" = "FCNTL" ]; then + _helper_lock=$( + cat <<EOF +-> POSIX ADVISORY WRITE ${_lock_helper_pid} ${_locking_tdb_id} 168 170 +EOF + ) + elif [ "$_helper_scope" = "RECORD" ] && + [ "$_lock_type" = "FCNTL" ]; then + _helper_lock=$( + cat <<EOF +-> POSIX ADVISORY WRITE ${_lock_helper_pid} ${_locking_tdb_id} 112736 112736 +EOF + ) + fi + _t=$( + cat <<EOF +$_t +$_helper_lock +EOF + ) + + if [ "$_holder_scope" = "DB" ]; then + _t=$( + cat <<EOF +$_t +POSIX ADVISORY READ 4131931 ${_locking_tdb_id} 4 4 +EOF + ) + elif [ "$_holder_scope" = "RECORD" ] && + [ "$_lock_type" = "FCNTL" ]; then + _t=$( + cat <<EOF +$_t +POSIX ADVISORY READ 2345678 ${_locking_tdb_id} 4 4 +POSIX ADVISORY READ 4131931 ${_locking_tdb_id} 4 4 +EOF + ) + fi + + _t=$( + cat <<EOF +$_t +POSIX ADVISORY READ 3769740 103:04:24390149 1073741826 1073742335 +POSIX ADVISORY WRITE 3769740 103:04:24380839 1073741826 1073742335 +FLOCK ADVISORY WRITE 3769302 103:02:1180313 0 EOF +FLOCK ADVISORY WRITE 3769302 103:02:1177487 0 EOF +FLOCK ADVISORY WRITE 3769302 103:02:1180308 0 EOF +OFDLCK ADVISORY READ -1 00:05:6 0 EOF +EOF + ) + + FAKE_PROC_LOCKS=$(echo "$_t" | awk '{ printf "%d: %s\n", NR, $0 }') + export FAKE_PROC_LOCKS + + _holder_mutex_lock="" + if [ "$_lock_type" = "MUTEX" ]; then + if [ "$_holder_scope" = "RECORD" ]; then + _holder_mutex_lock=$( + cat <<EOF +2345678 28142 +4131931 56284 +EOF + ) + fi + fi + + FAKE_TDB_MUTEX_CHECK="$_holder_mutex_lock" + export FAKE_TDB_MUTEX_CHECK + + _out='' + _nl=' +' + _db="locking.tdb.${FAKE_CTDB_PNN}" + + if [ -n "$_helper_lock" ]; then + read -r _ _ _ _ _pid _ _start _end <<EOF +$_helper_lock +EOF + _out="Waiter:${_nl}" + _out="${_out}${_pid} ctdb_lock_helpe ${_db} ${_start} ${_end}" + fi + + # fake lock info + _pids='' + _out="${_out:+${_out}${_nl}}Lock holders:" + if [ -n "$_holder_mutex_lock" ]; then + while read -r _pid _chain; do + _comm="smbd" + _out="${_out}${_nl}" + _out="${_out}${_pid} smbd ${_db} ${_chain}" + _pids="${_pids:+${_pids} }${_pid}" + done <<EOF +$_holder_mutex_lock +EOF + else + while read -r _ _ _ _pid _ _start _end; do + _comm="smbd" + _out="${_out}${_nl}" + _out="${_out}${_pid} smbd ${_db} ${_start} ${_end}" + _pids="${_pids:+${_pids} }${_pid}" + done <<EOF +$_holder_lock +EOF + fi + + # fake stack traces + for _pid in $_pids; do + _comm="smbd" + if [ "$_pid" = "4131931" ]; then + _state="$_holder_state" + else + _state="S" + fi + _out=$( + cat <<EOF +$_out +$(fake_stack_trace "$_pid" "$_comm" "$_state") +EOF + ) + done + + ok <<EOF +===== Start of debug locks PID=PID ===== +$_out +===== End of debug locks PID=PID ===== +EOF + + # shellcheck disable=SC2154 + # script_dir and script set in define_test() + script_test "${script_dir}/${script}" \ + "$_lock_helper_pid" \ + "$_helper_scope" \ + "$_path" \ + "$_lock_type" + +} |