selftest: Add lvm2 thin provision for kdump test

Signed-off-by: Tao Liu <ltao@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>

tests/scripts/testcases/lvm2-thinp-kdump/0-local-lvm2-thinp.sh

@@ -0,0 +1,59 @@
+on_build() {
+	TEST_DIR_PREFIX=/tmp/lvm_test.XXXXXX
+	# clear TEST_DIRs if any
+	rm -rf ${TEST_DIR_PREFIX%.*}.*
+	TEST_IMG="$(mktemp -d $TEST_DIR_PREFIX)/test.img"
+
+	img_inst_pkg "lvm2"
+	img_inst $TESTDIR/scripts/testcases/lvm2-thinp-kdump/lvm.conf  /etc/lvm/
+	dd if=/dev/zero of=$TEST_IMG bs=300M count=1
+	# The test.img will be /dev/sdb
+	img_add_qemu_cmd "-hdb $TEST_IMG"
+}
+
+on_test() {
+	VG=vg00
+	LV_THINPOOL=thinpool
+	LV_VOLUME=thinlv
+	VMCORE_PATH=var/crash
+
+	local boot_count=$(get_test_boot_count)
+
+	if [ $boot_count -eq 1 ]; then
+
+		vgcreate $VG /dev/sdb
+		# Create a small thinpool which is definitely not enough for
+		# vmcore, then create a thin volume which is definitely enough
+		# for vmcore, so we can make sure thinpool should be autoextend
+		# during runtime.
+		lvcreate -L 10M -T $VG/$LV_THINPOOL
+		lvcreate -V 300M -T $VG/$LV_THINPOOL -n $LV_VOLUME
+		mkfs.ext4 /dev/$VG/$LV_VOLUME
+		mount /dev/$VG/$LV_VOLUME /mnt
+		mkdir -p /mnt/$VMCORE_PATH
+
+		cat << EOF > /etc/kdump.conf
+ext4 /dev/$VG/$LV_VOLUME
+path /$VMCORE_PATH
+core_collector makedumpfile -l --message-level 7 -d 31
+EOF
+		kdumpctl start || test_failed "Failed to start kdump"
+
+		sync
+
+		echo 1 > /proc/sys/kernel/sysrq
+		echo c > /proc/sysrq-trigger
+
+	elif [ $boot_count -eq 2 ]; then
+		mount /dev/$VG/$LV_VOLUME /mnt
+		if has_valid_vmcore_dir /mnt/$VMCORE_PATH; then
+			test_passed
+		else
+			test_failed "Vmcore missing"
+		fi
+
+		shutdown -h 0
+	else
+		test_failed "Unexpected reboot"
+	fi
+}

tests/scripts/testcases/lvm2-thinp-kdump/lvm.conf

@@ -0,0 +1,5 @@
+activation {
+	thin_pool_autoextend_threshold = 70
+	thin_pool_autoextend_percent = 20
+	monitoring = 1
+}