From: David Goulet <dgoulet@efficios.com>
Date: Mon, 25 Nov 2013 19:55:57 +0000 (-0500)
Subject: Fix: create a fast and a long UST snapshot test
X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=commitdiff_plain;h=1d20c959e3aa1a9a205fd7fff2d912b6bada1d23

Fix: create a fast and a long UST snapshot test

The fast one does 10 snapshots where the long one keeps the 1000
original value. The make check only executes the fast one.

Signed-off-by: David Goulet <dgoulet@efficios.com>
---

diff --git a/tests/fast_regression b/tests/fast_regression
index 64b089225..54707229d 100644
--- a/tests/fast_regression
+++ b/tests/fast_regression
@@ -8,7 +8,7 @@ regression/tools/live/test_lttng_ust
 regression/tools/tracefile-limits/test_tracefile_count
 regression/tools/tracefile-limits/test_tracefile_size
 regression/tools/exclusion/test_exclusion
-regression/tools/snapshots/test_ust
+regression/tools/snapshots/test_ust_fast
 regression/tools/snapshots/test_ust_streaming
 regression/ust/before-after/test_before_after
 regression/ust/buffers-pid/test_buffers_pid
diff --git a/tests/long_regression b/tests/long_regression
index 2c6afcdc1..ab4339ddf 100644
--- a/tests/long_regression
+++ b/tests/long_regression
@@ -5,6 +5,7 @@ regression/tools/health/test_thread_exit
 regression/tools/health/test_thread_stall
 regression/tools/health/test_tp_fail
 regression/tools/streaming/test_ust
+regression/tools/snapshots/test_ust_long
 regression/tools/tracefile-limits/test_tracefile_count
 regression/tools/tracefile-limits/test_tracefile_size
 regression/ust/before-after/test_before_after
diff --git a/tests/regression/tools/snapshots/Makefile.am b/tests/regression/tools/snapshots/Makefile.am
index 66e9ddd31..39cda7821 100644
--- a/tests/regression/tools/snapshots/Makefile.am
+++ b/tests/regression/tools/snapshots/Makefile.am
@@ -1,5 +1,5 @@
-noinst_SCRIPTS = test_kernel test_kernel_streaming test_ust test_ust_streaming
-EXTRA_DIST = test_kernel test_kernel_streaming test_ust test_ust_streaming
+noinst_SCRIPTS = test_kernel test_kernel_streaming test_ust_fast test_ust_long ust_test test_ust_streaming
+EXTRA_DIST = test_kernel test_kernel_streaming test_ust_fast test_ust_long ust_test test_ust_streaming
 
 all-local:
 	@if [ x"$(srcdir)" != x"$(builddir)" ]; then \
diff --git a/tests/regression/tools/snapshots/test_ust b/tests/regression/tools/snapshots/test_ust
deleted file mode 100755
index bdc6f74d6..000000000
--- a/tests/regression/tools/snapshots/test_ust
+++ /dev/null
@@ -1,370 +0,0 @@
-#!/bin/bash
-#
-# Copyright (C) - 2013 Julien Desfossez <jdesfossez@efficios.com>
-#
-# This library is free software; you can redistribute it and/or modify it under
-# the terms of the GNU Lesser General Public License as published by the Free
-# Software Foundation; version 2.1 of the License.
-#
-# This library is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
-# details.
-#
-# You should have received a copy of the GNU Lesser General Public License
-# along with this library; if not, write to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
-TEST_DESC="Snapshots - UST tracing"
-
-CURDIR=$(dirname $0)/
-TESTDIR=$CURDIR/../../..
-EVENT_NAME="tp:tptest"
-PID_RELAYD=0
-SESSION_NAME=""
-CHANNEL_NAME="snapchan"
-TESTAPP_PATH="$TESTDIR/utils/testapp"
-TESTAPP_NAME="gen-ust-events"
-TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
-NR_ITER=2000000
-NR_USEC_WAIT=100
-
-TRACE_PATH=$(mktemp -d)
-
-NUM_TESTS=2076
-
-source $TESTDIR/utils/utils.sh
-
-if [ ! -x "$TESTAPP_BIN" ]; then
-	BAIL_OUT "No UST events binary detected."
-fi
-
-function start_test_app()
-{
-	local tmp_file="/tmp/lttng_test_ust.42.file"
-
-	# Start application with a temporary file.
-	$TESTAPP_BIN $NR_ITER $NR_USEC_WAIT $tmp_file &
-	ok $? "Start application to trace"
-
-	# Wait for the application file to appear indicating that at least one
-	# tracepoint has been fired.
-	while [ ! -f "$tmp_file" ]; do
-		sleep 0.5
-	done
-	diag "Removing test app temporary file $tmp_file"
-	rm -f $tmp_file
-}
-
-function kill_test_app()
-{
-	diag "Killing $TESTAPP_NAME"
-	PID_APP=`pidof $TESTAPP_NAME`
-	kill $PID_APP >/dev/null 2>&1
-}
-
-function snapshot_add_output ()
-{
-	local sess_name=$1
-	local trace_path=$2
-	local name=$3
-	local max_size=$4
-	local extra_opt=""
-
-	if [ ! -z $name ]; then
-		extra_opt+=" -n $name "
-	fi
-
-	if [ ! -z $max_size ]; then
-		extra_opt+=" -m $max_size "
-	fi
-
-	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot add-output \
-		-s $sess_name $extra_opt $trace_path > /dev/null 2>&1
-
-	ok $? "Added snapshot output $trace_path ($extra_opt)"
-}
-
-function snapshot_del_output ()
-{
-	local sess_name=$1
-	local name=$2
-
-	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot del-output \
-		-s $sess_name $name > /dev/null 2>&1
-
-	ok $? "Deleted snapshot output named $name"
-}
-
-function enable_mmap_overwrite_subbuf_ust_channel ()
-{
-	local sess_name=$1
-	local chan_name=$2
-	local subbuf_size=$3
-
-	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -s $sess_name \
-		$chan_name -u --output mmap --overwrite \
-		--subbuf-size $subbuf_size > /dev/null 2>&1
-
-	ok $? "Enable channel $channel_name for session $sess_name with subbuf size $subbuf_size"
-}
-
-
-function test_ust_list_output ()
-{
-	output_names=("randomname" "somesnapshot")
-
-	diag "Test UST snapshot output listing"
-	create_lttng_session_no_output $SESSION_NAME
-	enable_lttng_mmap_overwrite_ust_channel $SESSION_NAME $CHANNEL_NAME
-	enable_ust_lttng_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
-
-	start_lttng_tracing $SESSION_NAME
-
-	snapshot_add_output $SESSION_NAME "file://$TRACE_PATH" ${output_names[0]}
-
-	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot list-output \
-		-s $SESSION_NAME 2>&1 | grep ${output_names[0]} > /dev/null
-	ok $? "Snapshot named ${output_names[0]} present in list-output listing"
-
-	snapshot_del_output $SESSION_NAME ${output_names[0]}
-
-	snapshot_add_output $SESSION_NAME "file://$TRACE_PATH" ${output_names[1]}
-
-	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot list-output \
-		-s $SESSION_NAME 2>&1 | grep ${output_names[1]} > /dev/null
-
-	ok $? "Snapshot named ${output_names[1]} present in list-output listing"
-
-	stop_lttng_tracing $SESSION_NAME
-	destroy_lttng_session $SESSION_NAME
-}
-
-function test_ust_local_snapshot ()
-{
-	diag "Test local UST snapshots"
-	create_lttng_session_no_output $SESSION_NAME
-	enable_lttng_mmap_overwrite_ust_channel $SESSION_NAME $CHANNEL_NAME
-	enable_ust_lttng_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
-	start_lttng_tracing $SESSION_NAME
-	lttng_snapshot_add_output $SESSION_NAME $TRACE_PATH
-
-	# Returns once the application has at least fired ONE tracepoint.
-	start_test_app
-
-	lttng_snapshot_record $SESSION_NAME
-	stop_lttng_tracing $SESSION_NAME
-	destroy_lttng_session $SESSION_NAME
-
-	# Validate test
-	validate_trace $EVENT_NAME $TRACE_PATH/
-	if [ $? -eq 0 ]; then
-		# Only delete if successful
-		rm -rf $TRACE_PATH
-	else
-		break
-	fi
-
-	kill_test_app
-}
-
-function test_ust_local_snapshot_max_size ()
-{
-	subbuf_size=8192
-	num_cpus=`nproc`
-
-	# The minimum size limit is min(subbuf_size) * nb_streams
-	max_size=$(($subbuf_size*$num_cpus))
-
-	diag "Test local UST snapshots with max size $max_size"
-	create_lttng_session_no_output $SESSION_NAME
-
-	enable_mmap_overwrite_subbuf_ust_channel $SESSION_NAME $CHANNEL_NAME $subbuf_size
-
-	enable_ust_lttng_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
-	start_lttng_tracing $SESSION_NAME
-
-	snapshot_add_output $SESSION_NAME "file://$TRACE_PATH" "" $max_size
-
-	# Returns once the application has at least fired ONE tracepoint.
-	start_test_app
-
-	lttng_snapshot_record $SESSION_NAME
-
-	# Check file size
-	sum_size_tracefiles=$(find $TRACE_PATH -name "${CHANNEL_NAME}_*" \
-		-exec stat -c '%s' {} \; | awk '{s = s + $1}END{print s}')
-
-	if [ "$sum_size_tracefiles" -gt "$max_size" ]; then
-		fail "Tracefiles size sum validation"
-		diag "Tracefiles size sum: $sum_size_tracefiles Expected max: $max_size"
-	fi
-
-	pass "Tracefiles size sum validation"
-
-	stop_lttng_tracing $SESSION_NAME
-	destroy_lttng_session $SESSION_NAME
-
-	# Validate test
-	validate_trace $EVENT_NAME $TRACE_PATH/
-
-	if [ $? -eq 0 ]; then
-		# Only delete if successful
-		rm -rf $TRACE_PATH
-	fi
-
-	kill_test_app
-}
-
-function test_ust_local_snapshot_large_metadata ()
-{
-	LM_EVENT="tp:tptest1,tp:tptest2,tp:tptest3,tp:tptest4,tp:tptest5"
-	LM_PATH="$TESTDIR/utils/testapp"
-	LM_NAME="gen-ust-nevents"
-	LM_BIN="$LM_PATH/$LM_NAME/$LM_NAME"
-
-	diag "Test local UST snapshots with > 4kB metadata"
-	create_lttng_session_no_output $SESSION_NAME
-	enable_lttng_mmap_overwrite_ust_channel $SESSION_NAME $CHANNEL_NAME
-	enable_ust_lttng_event $SESSION_NAME $LM_EVENT $CHANNEL_NAME
-	start_lttng_tracing $SESSION_NAME
-	lttng_snapshot_add_output $SESSION_NAME $TRACE_PATH
-	$LM_BIN 1 1
-	ok $? "Start application to trace"
-	lttng_snapshot_record $SESSION_NAME
-	stop_lttng_tracing $SESSION_NAME
-	destroy_lttng_session $SESSION_NAME
-
-	# Validate test
-	validate_trace $LM_EVENT $TRACE_PATH/
-	if [ $? -eq 0 ]; then
-		# Only delete if successful
-		rm -rf $TRACE_PATH
-	else
-		break
-	fi
-}
-
-function enable_channel_per_uid_mmap_overwrite()
-{
-	sess_name=$1
-	channel_name=$2
-
-	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel --buffers-uid -u $channel_name -s $sess_name --output mmap --overwrite >/dev/null 2>&1
-	ok $? "Enable channel $channel_name per UID for session $sess_name"
-}
-
-function test_ust_per_uid_local_snapshot ()
-{
-	diag "Test local UST snapshots"
-	create_lttng_session_no_output $SESSION_NAME
-	enable_channel_per_uid_mmap_overwrite $SESSION_NAME $CHANNEL_NAME
-	enable_ust_lttng_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
-	start_lttng_tracing $SESSION_NAME
-	lttng_snapshot_add_output $SESSION_NAME $TRACE_PATH
-
-	# Returns once the application has at least fired ONE tracepoint.
-	start_test_app
-
-	lttng_snapshot_record $SESSION_NAME
-	stop_lttng_tracing $SESSION_NAME
-	destroy_lttng_session $SESSION_NAME
-
-	# Validate test
-	validate_trace $EVENT_NAME $TRACE_PATH/
-	if [ $? -eq 0 ]; then
-		# Only delete if successful
-		rm -rf $TRACE_PATH
-	else
-		break
-	fi
-
-	kill_test_app
-}
-
-function test_ust_per_uid_local_snapshot_post_mortem ()
-{
-	diag "Test local UST snapshots post-mortem"
-	create_lttng_session_no_output $SESSION_NAME
-	enable_channel_per_uid_mmap_overwrite $SESSION_NAME $CHANNEL_NAME
-	enable_ust_lttng_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
-	start_lttng_tracing $SESSION_NAME
-	lttng_snapshot_add_output $SESSION_NAME $TRACE_PATH
-
-	# Returns once the application has at least fired ONE tracepoint.
-	start_test_app
-	kill_test_app
-
-	lttng_snapshot_record $SESSION_NAME
-	stop_lttng_tracing $SESSION_NAME
-	destroy_lttng_session $SESSION_NAME
-
-	# Validate test
-	validate_trace $EVENT_NAME $TRACE_PATH/
-	if [ $? -eq 0 ]; then
-		# Only delete if successful
-		rm -rf $TRACE_PATH
-	else
-		break
-	fi
-}
-
-function test_ust_1000_local_snapshots ()
-{
-	NB_SNAP=1000
-
-	diag "Test $NB_SNAP local UST snapshots"
-	create_lttng_session_no_output $SESSION_NAME
-	enable_lttng_mmap_overwrite_ust_channel $SESSION_NAME $CHANNEL_NAME
-	enable_ust_lttng_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
-	start_lttng_tracing $SESSION_NAME
-	lttng_snapshot_add_output $SESSION_NAME $TRACE_PATH
-
-	# Returns once the application has at least fired ONE tracepoint.
-	start_test_app
-
-	for i in $(seq 1 $NB_SNAP); do
-		diag "Snapshot $i/$NB_SNAP"
-		rm -rf $TRACE_PATH/snapshot/* 2>/dev/null
-		lttng_snapshot_record $SESSION_NAME
-		# Validate test
-		validate_trace $EVENT_NAME $TRACE_PATH/
-		if [ $? -eq 0 ]; then
-			# Only delete if successful
-			rm -rf $TRACE_PATH
-		else
-			break
-		fi
-	done
-	stop_lttng_tracing $SESSION_NAME
-	destroy_lttng_session $SESSION_NAME
-
-	kill_test_app
-}
-
-plan_tests $NUM_TESTS
-
-print_test_banner "$TEST_DESC"
-
-if [ "$(id -u)" == "0" ]; then
-	isroot=1
-else
-	isroot=0
-fi
-
-start_lttng_sessiond
-
-tests=( test_ust_list_output
-	test_ust_local_snapshot
-	test_ust_local_snapshot_max_size
-	test_ust_per_uid_local_snapshot
-	test_ust_per_uid_local_snapshot_post_mortem
-	test_ust_local_snapshot_large_metadata
-	test_ust_1000_local_snapshots )
-
-for fct_test in ${tests[@]};
-do
-	SESSION_NAME=$(randstring 16 0)
-	${fct_test}
-done
-
-stop_lttng_sessiond
diff --git a/tests/regression/tools/snapshots/test_ust_fast b/tests/regression/tools/snapshots/test_ust_fast
new file mode 100755
index 000000000..edb435c52
--- /dev/null
+++ b/tests/regression/tools/snapshots/test_ust_fast
@@ -0,0 +1,29 @@
+#!/bin/bash
+#
+# Copyright (C) - 2013 Julien Desfossez <jdesfossez@efficios.com>
+#
+# This library is free software; you can redistribute it and/or modify it under
+# the terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation; version 2.1 of the License.
+#
+# This library is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this library; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+
+CURDIR=$(dirname $0)/
+NR_SNAPSHOT=10
+TESTDIR=$CURDIR/../../..
+TEST_BIN="ust_test"
+
+source $TESTDIR/utils/utils.sh
+
+if [ ! -x "$CURDIR/$TEST_BIN" ]; then
+	BAIL_OUT "No UST test found: $TEST_BIN"
+fi
+
+./$CURDIR/$TEST_BIN $NR_SNAPSHOT
diff --git a/tests/regression/tools/snapshots/test_ust_long b/tests/regression/tools/snapshots/test_ust_long
new file mode 100755
index 000000000..9e1a0c262
--- /dev/null
+++ b/tests/regression/tools/snapshots/test_ust_long
@@ -0,0 +1,29 @@
+#!/bin/bash
+#
+# Copyright (C) - 2013 Julien Desfossez <jdesfossez@efficios.com>
+#
+# This library is free software; you can redistribute it and/or modify it under
+# the terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation; version 2.1 of the License.
+#
+# This library is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this library; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+
+CURDIR=$(dirname $0)/
+NR_SNAPSHOT=1000
+TESTDIR=$CURDIR/../../..
+TEST_BIN="ust_test"
+
+source $TESTDIR/utils/utils.sh
+
+if [ ! -x "$CURDIR/$TEST_BIN" ]; then
+	BAIL_OUT "No UST test found: $TEST_BIN"
+fi
+
+./$CURDIR/$TEST_BIN $NR_SNAPSHOT
diff --git a/tests/regression/tools/snapshots/ust_test b/tests/regression/tools/snapshots/ust_test
new file mode 100755
index 000000000..e727aa634
--- /dev/null
+++ b/tests/regression/tools/snapshots/ust_test
@@ -0,0 +1,370 @@
+#!/bin/bash
+#
+# Copyright (C) - 2013 Julien Desfossez <jdesfossez@efficios.com>
+#
+# This library is free software; you can redistribute it and/or modify it under
+# the terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation; version 2.1 of the License.
+#
+# This library is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this library; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+TEST_DESC="Snapshots - UST tracing"
+
+CURDIR=$(dirname $0)/
+TESTDIR=$CURDIR/../../..
+EVENT_NAME="tp:tptest"
+PID_RELAYD=0
+SESSION_NAME=""
+CHANNEL_NAME="snapchan"
+TESTAPP_PATH="$TESTDIR/utils/testapp"
+TESTAPP_NAME="gen-ust-events"
+TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
+NR_ITER=2000000
+NR_USEC_WAIT=100
+
+NUM_TESTS=76
+
+TRACE_PATH=$(mktemp -d)
+
+source $TESTDIR/utils/utils.sh
+
+if [ ! -x "$TESTAPP_BIN" ]; then
+	BAIL_OUT "No UST events binary detected."
+fi
+
+# Need the number of snapshot to do.
+if [ -z $1 ]; then
+	BAIL_OUT "A number of snapshot is needed."
+fi
+NR_SNAPSHOT=$1
+
+NUM_TESTS=$(($NUM_TESTS + ($NR_SNAPSHOT * 2)))
+
+function start_test_app()
+{
+	local tmp_file="/tmp/lttng_test_ust.42.file"
+
+	# Start application with a temporary file.
+	$TESTAPP_BIN $NR_ITER $NR_USEC_WAIT $tmp_file &
+	ok $? "Start application to trace"
+
+	# Wait for the application file to appear indicating that at least one
+	# tracepoint has been fired.
+	while [ ! -f "$tmp_file" ]; do
+		sleep 0.5
+	done
+	diag "Removing test app temporary file $tmp_file"
+	rm -f $tmp_file
+}
+
+function kill_test_app()
+{
+	diag "Killing $TESTAPP_NAME"
+	PID_APP=`pidof $TESTAPP_NAME`
+	kill $PID_APP >/dev/null 2>&1
+}
+
+function snapshot_add_output ()
+{
+	local sess_name=$1
+	local trace_path=$2
+	local name=$3
+	local max_size=$4
+	local extra_opt=""
+
+	if [ ! -z $name ]; then
+		extra_opt+=" -n $name "
+	fi
+
+	if [ ! -z $max_size ]; then
+		extra_opt+=" -m $max_size "
+	fi
+
+	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot add-output \
+		-s $sess_name $extra_opt $trace_path > /dev/null 2>&1
+
+	ok $? "Added snapshot output $trace_path ($extra_opt)"
+}
+
+function snapshot_del_output ()
+{
+	local sess_name=$1
+	local name=$2
+
+	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot del-output \
+		-s $sess_name $name > /dev/null 2>&1
+
+	ok $? "Deleted snapshot output named $name"
+}
+
+function enable_mmap_overwrite_subbuf_ust_channel ()
+{
+	local sess_name=$1
+	local chan_name=$2
+	local subbuf_size=$3
+
+	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -s $sess_name \
+		$chan_name -u --output mmap --overwrite \
+		--subbuf-size $subbuf_size > /dev/null 2>&1
+
+	ok $? "Enable channel $channel_name for session $sess_name with subbuf size $subbuf_size"
+}
+
+
+function test_ust_list_output ()
+{
+	output_names=("randomname" "somesnapshot")
+
+	diag "Test UST snapshot output listing"
+	create_lttng_session_no_output $SESSION_NAME
+	enable_lttng_mmap_overwrite_ust_channel $SESSION_NAME $CHANNEL_NAME
+	enable_ust_lttng_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
+
+	start_lttng_tracing $SESSION_NAME
+
+	snapshot_add_output $SESSION_NAME "file://$TRACE_PATH" ${output_names[0]}
+
+	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot list-output \
+		-s $SESSION_NAME 2>&1 | grep ${output_names[0]} > /dev/null
+	ok $? "Snapshot named ${output_names[0]} present in list-output listing"
+
+	snapshot_del_output $SESSION_NAME ${output_names[0]}
+
+	snapshot_add_output $SESSION_NAME "file://$TRACE_PATH" ${output_names[1]}
+
+	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot list-output \
+		-s $SESSION_NAME 2>&1 | grep ${output_names[1]} > /dev/null
+
+	ok $? "Snapshot named ${output_names[1]} present in list-output listing"
+
+	stop_lttng_tracing $SESSION_NAME
+	destroy_lttng_session $SESSION_NAME
+}
+
+function test_ust_local_snapshot ()
+{
+	diag "Test local UST snapshots"
+	create_lttng_session_no_output $SESSION_NAME
+	enable_lttng_mmap_overwrite_ust_channel $SESSION_NAME $CHANNEL_NAME
+	enable_ust_lttng_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
+	start_lttng_tracing $SESSION_NAME
+	lttng_snapshot_add_output $SESSION_NAME $TRACE_PATH
+
+	# Returns once the application has at least fired ONE tracepoint.
+	start_test_app
+
+	lttng_snapshot_record $SESSION_NAME
+	stop_lttng_tracing $SESSION_NAME
+	destroy_lttng_session $SESSION_NAME
+
+	# Validate test
+	validate_trace $EVENT_NAME $TRACE_PATH/
+	if [ $? -eq 0 ]; then
+		# Only delete if successful
+		rm -rf $TRACE_PATH
+	else
+		break
+	fi
+
+	kill_test_app
+}
+
+function test_ust_local_snapshot_max_size ()
+{
+	subbuf_size=8192
+	num_cpus=`nproc`
+
+	# The minimum size limit is min(subbuf_size) * nb_streams
+	max_size=$(($subbuf_size*$num_cpus))
+
+	diag "Test local UST snapshots with max size $max_size"
+	create_lttng_session_no_output $SESSION_NAME
+
+	enable_mmap_overwrite_subbuf_ust_channel $SESSION_NAME $CHANNEL_NAME $subbuf_size
+
+	enable_ust_lttng_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
+	start_lttng_tracing $SESSION_NAME
+
+	snapshot_add_output $SESSION_NAME "file://$TRACE_PATH" "" $max_size
+
+	# Returns once the application has at least fired ONE tracepoint.
+	start_test_app
+
+	lttng_snapshot_record $SESSION_NAME
+
+	# Check file size
+	sum_size_tracefiles=$(find $TRACE_PATH -name "${CHANNEL_NAME}_*" \
+		-exec stat -c '%s' {} \; | awk '{s = s + $1}END{print s}')
+
+	if [ "$sum_size_tracefiles" -gt "$max_size" ]; then
+		fail "Tracefiles size sum validation"
+		diag "Tracefiles size sum: $sum_size_tracefiles Expected max: $max_size"
+	fi
+
+	pass "Tracefiles size sum validation"
+
+	stop_lttng_tracing $SESSION_NAME
+	destroy_lttng_session $SESSION_NAME
+
+	# Validate test
+	validate_trace $EVENT_NAME $TRACE_PATH/
+
+	if [ $? -eq 0 ]; then
+		# Only delete if successful
+		rm -rf $TRACE_PATH
+	fi
+
+	kill_test_app
+}
+
+function test_ust_local_snapshot_large_metadata ()
+{
+	LM_EVENT="tp:tptest1,tp:tptest2,tp:tptest3,tp:tptest4,tp:tptest5"
+	LM_PATH="$TESTDIR/utils/testapp"
+	LM_NAME="gen-ust-nevents"
+	LM_BIN="$LM_PATH/$LM_NAME/$LM_NAME"
+
+	diag "Test local UST snapshots with > 4kB metadata"
+	create_lttng_session_no_output $SESSION_NAME
+	enable_lttng_mmap_overwrite_ust_channel $SESSION_NAME $CHANNEL_NAME
+	enable_ust_lttng_event $SESSION_NAME $LM_EVENT $CHANNEL_NAME
+	start_lttng_tracing $SESSION_NAME
+	lttng_snapshot_add_output $SESSION_NAME $TRACE_PATH
+	$LM_BIN 1 1
+	ok $? "Start application to trace"
+	lttng_snapshot_record $SESSION_NAME
+	stop_lttng_tracing $SESSION_NAME
+	destroy_lttng_session $SESSION_NAME
+
+	# Validate test
+	validate_trace $LM_EVENT $TRACE_PATH/
+	if [ $? -eq 0 ]; then
+		# Only delete if successful
+		rm -rf $TRACE_PATH
+	else
+		break
+	fi
+}
+
+function enable_channel_per_uid_mmap_overwrite()
+{
+	sess_name=$1
+	channel_name=$2
+
+	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel --buffers-uid -u $channel_name -s $sess_name --output mmap --overwrite >/dev/null 2>&1
+	ok $? "Enable channel $channel_name per UID for session $sess_name"
+}
+
+function test_ust_per_uid_local_snapshot ()
+{
+	diag "Test local UST snapshots"
+	create_lttng_session_no_output $SESSION_NAME
+	enable_channel_per_uid_mmap_overwrite $SESSION_NAME $CHANNEL_NAME
+	enable_ust_lttng_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
+	start_lttng_tracing $SESSION_NAME
+	lttng_snapshot_add_output $SESSION_NAME $TRACE_PATH
+
+	# Returns once the application has at least fired ONE tracepoint.
+	start_test_app
+
+	lttng_snapshot_record $SESSION_NAME
+	stop_lttng_tracing $SESSION_NAME
+	destroy_lttng_session $SESSION_NAME
+
+	# Validate test
+	validate_trace $EVENT_NAME $TRACE_PATH/
+	if [ $? -eq 0 ]; then
+		# Only delete if successful
+		rm -rf $TRACE_PATH
+	else
+		break
+	fi
+
+	kill_test_app
+}
+
+function test_ust_per_uid_local_snapshot_post_mortem ()
+{
+	diag "Test local UST snapshots post-mortem"
+	create_lttng_session_no_output $SESSION_NAME
+	enable_channel_per_uid_mmap_overwrite $SESSION_NAME $CHANNEL_NAME
+	enable_ust_lttng_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
+	start_lttng_tracing $SESSION_NAME
+	lttng_snapshot_add_output $SESSION_NAME $TRACE_PATH
+
+	# Returns once the application has at least fired ONE tracepoint.
+	start_test_app
+	kill_test_app
+
+	lttng_snapshot_record $SESSION_NAME
+	stop_lttng_tracing $SESSION_NAME
+	destroy_lttng_session $SESSION_NAME
+
+	# Validate test
+	validate_trace $EVENT_NAME $TRACE_PATH/
+	if [ $? -eq 0 ]; then
+		# Only delete if successful
+		rm -rf $TRACE_PATH
+	else
+		break
+	fi
+}
+
+function test_ust_local_snapshots ()
+{
+	diag "Test $NR_SNAPSHOT local UST snapshots"
+	create_lttng_session_no_output $SESSION_NAME
+	enable_lttng_mmap_overwrite_ust_channel $SESSION_NAME $CHANNEL_NAME
+	enable_ust_lttng_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
+	start_lttng_tracing $SESSION_NAME
+	lttng_snapshot_add_output $SESSION_NAME $TRACE_PATH
+
+	# Returns once the application has at least fired ONE tracepoint.
+	start_test_app
+
+	for i in $(seq 1 $NR_SNAPSHOT); do
+		diag "Snapshot $i/$NR_SNAPSHOT"
+		rm -rf $TRACE_PATH/snapshot/* 2>/dev/null
+		lttng_snapshot_record $SESSION_NAME
+		# Validate test
+		validate_trace $EVENT_NAME $TRACE_PATH/
+		if [ $? -eq 0 ]; then
+			# Only delete if successful
+			rm -rf $TRACE_PATH
+		else
+			break
+		fi
+	done
+	stop_lttng_tracing $SESSION_NAME
+	destroy_lttng_session $SESSION_NAME
+
+	kill_test_app
+}
+
+plan_tests $NUM_TESTS
+
+print_test_banner "$TEST_DESC"
+
+start_lttng_sessiond
+
+tests=( test_ust_list_output
+	test_ust_local_snapshot
+	test_ust_local_snapshot_max_size
+	test_ust_per_uid_local_snapshot
+	test_ust_per_uid_local_snapshot_post_mortem
+	test_ust_local_snapshot_large_metadata
+	test_ust_local_snapshots)
+
+for fct_test in ${tests[@]};
+do
+	SESSION_NAME=$(randstring 16 0)
+	${fct_test}
+done
+
+stop_lttng_sessiond