v2 test: auto-dedup on restore

Use maps04, on tmpfs, check if size of pages image is zero in the end
Signed-off-by: Tikhomirov Pavel <snorcht@gmail.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/mem-snap/run-snap-maps04.sh

+#!/bin/bash
+
+source ../env.sh || exit 1
+
+USEPS=0
+
+if [ "$1" = "-s" ]; then
+	echo "Will test via page-server"
+	USEPS=1
+	shift
+fi
+
+NRSNAP=1
+SPAUSE=${2:-4}
+PORT=12345
+
+function fail {
+	echo "$@"
+	exit 1
+}
+set -x
+
+IMGDIR="dump"
+CURDIR=${pwd}
+if ! mount | fgrep "$CURDIR/$IMGDIR" ; then
+	rm -rf "$IMGDIR"
+	mkdir "$IMGDIR"
+
+	mount -t tmpfs -o size=1500M,nr_inodes=10k,mode=700 tmpfs $IMGDIR
+fi
+rm -rf "$IMGDIR/*"
+
+echo "Launching test"
+make -C ../zdtm/live/static/ cleanout
+make -C ../zdtm/live/static/ maps04
+make -C ../zdtm/live/static/ maps04.pid || fail "Can't start test"
+PID=$(cat ../zdtm/live/static/maps04.pid)
+kill -0 $PID || fail "Test haven't started"
+
+mkdir "$IMGDIR/$NRSNAP/"
+
+if [ $USEPS -eq 1 ] ; then
+	${CRIU} page-server -D "${IMGDIR}/$NRSNAP/" -o ps.log --port ${PORT} -d -v4 #&
+	PS_PID=$!
+	ps_args="--page-server --address 127.0.0.1 --port=${PORT}"
+else
+	ps_args=""
+fi
+
+${CRIU} dump -D "${IMGDIR}/$NRSNAP/" -o dump.log -t ${PID} -v4 $ps_args || fail "Fail to dump"
+if [ $USEPS -eq 1 ] ; then
+	wait $PS_PID
+fi
+
+echo "Restoring"
+${CRIU} restore -D "${IMGDIR}/$NRSNAP/" -o restore.log --auto-dedup -d -v4 || fail "Fail to restore"
+
+make -C ../zdtm/live/static/ maps04.out
+sleep 1
+
+cat "../zdtm/live/static/maps04.out" | fgrep PASS || fail "Test failed"
+
+size=$(du -sh -BK  dump/1/pages-*.img | grep -Eo '[0-9]+' | head -1)
+if [ $size -ne 0 ] ; then
+	fail "Size not null"
+fi
+
+echo "Test PASSED"