tests: multi-hosts: Add VG testing

This patch is to add VG testing on multi hosts.  There have two scripts,
the script multi_hosts_vg_hosta.sh is used to create VGs on one host,
and the second script multi_hosts_vg_hostb.sh afterwards will acquire
global lock and VG lock, and remove VGs.  The testing flow verifies the
locking operations between two hosts with lvmlockd and the backend
locking manager.

  On the host A:
    make check_lvmlockd_idm \
      LVM_TEST_BACKING_DEVICE=/dev/sdj3,/dev/sdk3,/dev/sdl3 \
      LVM_TEST_MULTI_HOST=1 T=multi_hosts_vg_hosta.sh

  On the host B:
    make check_lvmlockd_idm \
      LVM_TEST_BACKING_DEVICE=/dev/sdj3,/dev/sdk3,/dev/sdl3 \
      LVM_TEST_MULTI_HOST=1 T=multi_hosts_vg_hostb.sh

Signed-off-by: Leo Yan <leo.yan@linaro.org>

test/Makefile.in

@@ -93,6 +93,7 @@ help:
 	@echo -e "\nSupported variables:"
 	@echo "  LVM_TEST_AUX_TRACE	Set for verbose messages for aux scripts []."
 	@echo "  LVM_TEST_BACKING_DEVICE Set device used for testing (see also LVM_TEST_DIR)."
+	@echo "  LVM_TEST_MULTI_HOST	Set multiple hosts used for testing."
 	@echo "  LVM_TEST_CAN_CLOBBER_DMESG Allow to clobber dmesg buffer without /dev/kmsg. (1)"
 	@echo "  LVM_TEST_DEVDIR	Set to '/dev' to run on real /dev."
 	@echo "  LVM_TEST_PREFER_BRD	Prefer using brd (ramdisk) over loop for testing [1]."

test/lib/inittest.sh

@@ -32,6 +32,7 @@ LVM_TEST_DEVDIR=${LVM_TEST_DEVDIR-}
 LVM_TEST_NODEBUG=${LVM_TEST_NODEBUG-}
 LVM_TEST_LVM1=${LVM_TEST_LVM1-}
 LVM_TEST_FAILURE=${LVM_TEST_FAILURE-}
+LVM_TEST_MULTI_HOST=${LVM_TEST_MULTI_HOST-}
 # TODO: LVM_TEST_SHARED
 SHARED=${SHARED-}
 
@@ -65,6 +66,7 @@ test -n "$SKIP_WITH_LVMLOCKD" && test -n "$LVM_TEST_LVMLOCKD" && initskip
 unset CDPATH
 
 export LVM_TEST_BACKING_DEVICE LVM_TEST_DEVDIR LVM_TEST_NODEBUG LVM_TEST_FAILURE
+export LVM_TEST_MULTI_HOST
 export LVM_TEST_LVMLOCKD LVM_TEST_LVMLOCKD_TEST
 export LVM_TEST_LVMPOLLD LVM_TEST_LOCK_TYPE_DLM LVM_TEST_LOCK_TYPE_SANLOCK LVM_TEST_LOCK_TYPE_IDM
 export LVM_TEST_DEVICES_FILE

test/shell/multi_hosts_vg_hosta.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+
+# Copyright (C) 2020 Seagate, Inc. All rights reserved.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+# This testing script is for multi-hosts testing, the paired scripts
+# are: multi_hosts_vg_hosta.sh / multi_hosts_vg_hostb.sh
+#
+# On the host A:
+#   make check_lvmlockd_idm \
+#     LVM_TEST_BACKING_DEVICE=/dev/sdj3,/dev/sdk3,/dev/sdl3 \
+#     LVM_TEST_MULTI_HOST=1 T=multi_hosts_vg_hosta.sh
+# On the host B:
+#   make check_lvmlockd_idm \
+#     LVM_TEST_BACKING_DEVICE=/dev/sdj3,/dev/sdk3,/dev/sdl3 \
+#     LVM_TEST_MULTI_HOST=1 T=multi_hosts_vg_hostb.sh
+
+SKIP_WITH_LVMPOLLD=1
+
+. lib/inittest
+
+[ -z "$LVM_TEST_MULTI_HOST" ] && skip;
+
+IFS=',' read -r -a BLKDEVS <<< "$LVM_TEST_BACKING_DEVICE"
+
+for d in "${BLKDEVS[@]}"; do
+	aux extend_filter_LVMTEST "a|$d|"
+done
+
+aux lvmconf "devices/allow_changes_with_duplicate_pvs = 1"
+
+i=0
+for d in "${BLKDEVS[@]}"; do
+	echo $i
+	i=$((i+1))
+	vgcreate $SHARED TESTVG$i $d
+	vgchange -a n TESTVG$i
+done

test/shell/multi_hosts_vg_hostb.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+
+# Copyright (C) 2020 Seagate, Inc. All rights reserved.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+# This testing script is for multi-hosts testing, the paired scripts
+# are: multi_hosts_vg_hosta.sh / multi_hosts_vg_hostb.sh
+#
+# On the host A:
+#   make check_lvmlockd_idm \
+#     LVM_TEST_BACKING_DEVICE=/dev/sdj3,/dev/sdk3,/dev/sdl3 \
+#     LVM_TEST_MULTI_HOST=1 T=multi_hosts_vg_hosta.sh
+# On the host B:
+#   make check_lvmlockd_idm \
+#     LVM_TEST_BACKING_DEVICE=/dev/sdj3,/dev/sdk3,/dev/sdl3 \
+#     LVM_TEST_MULTI_HOST=1 T=multi_hosts_vg_hostb.sh
+
+SKIP_WITH_LVMPOLLD=1
+
+. lib/inittest
+
+[ -z "$LVM_TEST_MULTI_HOST" ] && skip;
+
+IFS=',' read -r -a BLKDEVS <<< "$LVM_TEST_BACKING_DEVICE"
+
+for d in "${BLKDEVS[@]}"; do
+	aux extend_filter_LVMTEST "a|$d|"
+done
+
+aux lvmconf "devices/allow_changes_with_duplicate_pvs = 1"
+
+vgchange --lock-start
+
+i=0
+for d in "${BLKDEVS[@]}"; do
+        i=$((i+1))
+	check vg_field TESTVG$i lv_count 0
+done
+
+i=0
+for d in "${BLKDEVS[@]}"; do
+        i=$((i+1))
+	vgchange -a ey TESTVG$i
+	vgremove -ff TESTVG$i
+done