main - tests: add writecache-cache-blocksize-2

[David Teigland <teigland@sourceware.org>]

Gitweb:        https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=9759f915e78044667681de395bf2694bd5c7f393
Commit:        9759f915e78044667681de395bf2694bd5c7f393
Parent:        ff677aa69f8fc31e5733b0650e2324c826ce0794
Author:        David Teigland <teigland@redhat.com>
AuthorDate:    Mon Jun 7 15:40:40 2021 -0500
Committer:     David Teigland <teigland@redhat.com>
CommitterDate: Mon Jun 7 15:40:40 2021 -0500

tests: add writecache-cache-blocksize-2

inconsistent physical block size of devs used
for main LV and cache
---
 test/shell/writecache-cache-blocksize-2.sh | 232 +++++++++++++++++++++++++++++
 1 file changed, 232 insertions(+)

diff --git a/test/shell/writecache-cache-blocksize-2.sh b/test/shell/writecache-cache-blocksize-2.sh
new file mode 100644
index 000000000..af4f60e1d
--- /dev/null
+++ b/test/shell/writecache-cache-blocksize-2.sh
@@ -0,0 +1,232 @@
+#!/usr/bin/env bash
+
+# Copyright (C) 2018 Red Hat, 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 v.2.
+#
+# 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
+
+# Test dm-writecache and dm-cache with different block size combinations
+
+SKIP_WITH_LVMPOLLD=1
+
+. lib/inittest
+
+aux have_writecache 1 0 0 || skip
+which mkfs.xfs || skip
+
+mnt="mnt"
+mkdir -p $mnt
+
+awk 'BEGIN { while (z++ < 16384) printf "A" }' > fileA
+awk 'BEGIN { while (z++ < 16384) printf "B" }' > fileB
+awk 'BEGIN { while (z++ < 16384) printf "C" }' > fileC
+
+# generate random data
+dd if=/dev/urandom of=randA bs=512K count=2
+dd if=/dev/urandom of=randB bs=512K count=3
+dd if=/dev/urandom of=randC bs=512K count=4
+
+_add_new_data_to_mnt() {
+	mount "$DM_DEV_DIR/$vg/$lv1" $mnt
+
+	# add original data
+	cp randA $mnt
+	cp randB $mnt
+	cp randC $mnt
+	mkdir $mnt/1
+	cp fileA $mnt/1
+	cp fileB $mnt/1
+	cp fileC $mnt/1
+	mkdir $mnt/2
+	cp fileA $mnt/2
+	cp fileB $mnt/2
+	cp fileC $mnt/2
+	sync
+}
+
+_add_more_data_to_mnt() {
+	mkdir $mnt/more
+	cp fileA $mnt/more
+	cp fileB $mnt/more
+	cp fileC $mnt/more
+	cp randA $mnt/more
+	cp randB $mnt/more
+	cp randC $mnt/more
+	sync
+}
+
+_verify_data_on_mnt() {
+	diff randA $mnt/randA
+	diff randB $mnt/randB
+	diff randC $mnt/randC
+	diff fileA $mnt/1/fileA
+	diff fileB $mnt/1/fileB
+	diff fileC $mnt/1/fileC
+	diff fileA $mnt/2/fileA
+	diff fileB $mnt/2/fileB
+	diff fileC $mnt/2/fileC
+}
+
+_verify_more_data_on_mnt() {
+	diff randA $mnt/more/randA
+	diff randB $mnt/more/randB
+	diff randC $mnt/more/randC
+	diff fileA $mnt/more/fileA
+	diff fileB $mnt/more/fileB
+	diff fileC $mnt/more/fileC
+}
+
+_verify_data_on_lv() {
+	lvchange -ay $vg/$lv1
+	mount "$DM_DEV_DIR/$vg/$lv1" $mnt
+	_verify_data_on_mnt
+	rm $mnt/randA
+	rm $mnt/randB
+	rm $mnt/randC
+	rm -rf $mnt/1
+	rm -rf $mnt/2
+	umount $mnt
+	lvchange -an $vg/$lv1
+}
+
+# Check that the LBS ($1) and PBS ($2) are accurately reported.
+_check_env() {
+
+	check sysfs "$(< SCSI_DEBUG_DEV)" queue/logical_block_size "$1"
+	check sysfs "$(< SCSI_DEBUG_DEV)" queue/physical_block_size "$2"
+
+	blockdev --getss "$dev1"
+	blockdev --getpbsz "$dev1"
+	blockdev --getss "$dev2"
+	blockdev --getpbsz "$dev2"
+}
+
+#
+# _run_test $BD1 $BD2 $type $optname "..."
+#
+# $BD1:    device to place the main LV on
+# $BD2:    device to place the cache on
+# $type    is cache or writecache to use in lvconvert --type $type
+# $optname is either --cachevol or --cachepool to use in lvconvert
+# "..." a sector size option to use in mkfs.xfs
+#
+
+_run_test() {
+	vgcreate $SHARED $vg "$1"
+	vgextend $vg "$2"
+	lvcreate -n $lv1 -l 8 -an $vg "$1"
+	lvcreate -n $lv2 -l 4 -an $vg "$2"
+	lvchange -ay $vg/$lv1
+	mkfs.xfs -f $5 "$DM_DEV_DIR/$vg/$lv1" |tee out
+	_add_new_data_to_mnt
+	lvconvert --yes --type $3 $4 $lv2 $vg/$lv1
+
+	# TODO: check expected LBS of LV1
+	# blockdev --getss "$DM_DEV_DIR/$vg/$lv1" |tee out
+	# grep "$N" out
+	# TODO: check expected PBS of LV1
+	# blockdev --getpbsz "$DM_DEV_DIR/$vg/$lv1" |tee out
+	# grep "$N" out
+
+	_add_more_data_to_mnt
+	_verify_data_on_mnt
+	lvconvert --splitcache $vg/$lv1
+	check lv_field $vg/$lv1 segtype linear
+	blockdev --getss "$DM_DEV_DIR/$vg/$lv1"
+	blockdev --getpbsz "$DM_DEV_DIR/$vg/$lv1"
+	_verify_data_on_mnt
+	_verify_more_data_on_mnt
+	umount $mnt
+	lvchange -an $vg/$lv1
+	lvchange -an $vg/$lv2
+	_verify_data_on_lv
+	lvremove $vg/$lv1
+	lvremove $vg/$lv2
+	vgremove $vg
+}
+
+# Setup: dev1 LBS 512, PBS 4096  (using scsi-debug)
+#        dev2 LBS 512, PBS 4096  (using scsi-debug)
+#        dev3 LBS 512, PBS 512   (using loop)
+#        dev4 LBS 512, PBS 512   (using loop)
+#
+
+aux prepare_scsi_debug_dev 256 sector_size=512 physblk_exp=3
+aux prepare_devs 2 64
+
+# loopa/loopb have LBS 512 PBS 512
+which fallocate || skip
+fallocate -l 64M loopa
+fallocate -l 64M loopb
+
+for i in {1..5}; do
+	LOOP1=$(losetup -f loopa --show || true)
+	test -n "$LOOP1" && break
+done
+for i in {1..5} ; do
+	LOOP2=$(losetup -f loopb --show || true)
+	test -n "$LOOP2" && break
+done
+
+# prepare devX mapping so it works for real & fake dev dir
+d=3
+for i in "$LOOP1" "$LOOP2"; do
+	echo "$i"
+	m=${i##*loop}
+	test -e "$DM_DEV_DIR/loop$m" || mknod "$DM_DEV_DIR/loop$m" b 7 "$m"
+	eval "dev$d=\"$DM_DEV_DIR/loop$m\""
+	d=$(( d + 1 ))
+done
+
+# verify dev1/dev2 have LBS 512 PBS 4096
+_check_env "512" "4096"
+
+# verify dev3/dev4 have LBS 512 PBS 512
+blockdev --getss "$LOOP1" | grep 512
+blockdev --getss "$LOOP2" | grep 512
+blockdev --getpbsz "$LOOP1" | grep 512
+blockdev --getpbsz "$LOOP2" | grep 512
+
+aux extend_filter "a|$dev3|" "a|$dev4|"
+
+# place main LV on dev1 with LBS 512, PBS 4096
+# and the cache on dev3 with LBS 512, PBS 512
+
+_run_test "$dev1" "$dev3" "writecache" "--cachevol" ""
+_run_test "$dev1" "$dev3" "cache" "--cachevol"  ""
+_run_test "$dev1" "$dev3" "cache" "--cachepool" ""
+
+# place main LV on dev3 with LBS 512, PBS 512
+# and the cache on dev1 with LBS 512, PBS 4096
+
+_run_test "$dev3" "$dev1" "writecache" "--cachevol" ""
+_run_test "$dev3" "$dev1" "cache" "--cachevol"  ""
+_run_test "$dev3" "$dev1" "cache" "--cachepool" ""
+
+# place main LV on dev1 with LBS 512, PBS 4096
+# and the cache on dev3 with LBS 512, PBS 512
+# and force xfs sectsz 512
+
+_run_test "$dev1" "$dev3" "writecache" "--cachevol" "-s size=512"
+_run_test "$dev1" "$dev3" "cache" "--cachevol" "-s size=512"
+_run_test "$dev1" "$dev3" "cache" "--cachepool" "-s size=512"
+
+# place main LV on dev3 with LBS 512, PBS 512
+# and the cache on dev1 with LBS 512, PBS 4096
+# and force xfs sectsz 4096
+
+_run_test "$dev3" "$dev1" "writecache" "--cachevol" "-s size=4096"
+_run_test "$dev3" "$dev1" "cache" "--cachevol" "-s size=4096"
+_run_test "$dev3" "$dev1" "cache" "--cachepool" "-s size=4096"
+
+
+losetup -d "$LOOP1" || true
+losetup -d "$LOOP2" || true
+rm loopa loopb
+
+aux cleanup_scsi_debug_dev