[lvm-devel] main - tests: add lvextend-caches-on-thindata

[David Teigland]

Gitweb:        https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=00f603de2c507ee12195487fa007510ee3ff9770
Commit:        00f603de2c507ee12195487fa007510ee3ff9770
Parent:        6b00c8c9109b0b6111d4adb9918cccc407ac448f
Author:        David Teigland <teigland at redhat.com>
AuthorDate:    Thu May 6 15:59:37 2021 -0500
Committer:     David Teigland <teigland at redhat.com>
CommitterDate: Thu May 6 16:23:26 2021 -0500

tests: add lvextend-caches-on-thindata

to test lvextend of thin pool data while it has
cache|writecache attached
---
 test/shell/lvextend-caches-on-thindata.sh | 170 ++++++++++++++++++++++++++++++
 1 file changed, 170 insertions(+)

diff --git a/test/shell/lvextend-caches-on-thindata.sh b/test/shell/lvextend-caches-on-thindata.sh
new file mode 100644
index 000000000..aab571611
--- /dev/null
+++ b/test/shell/lvextend-caches-on-thindata.sh
@@ -0,0 +1,170 @@
+#!/usr/bin/env bash
+
+# Copyright (C) 2017-2020 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
+
+SKIP_WITH_LVMPOLLD=1
+
+# lvextend thin pool data that has cache|writecache attached
+
+. lib/inittest
+
+do_test()
+{
+	local tp=$1
+	local lvt=$2
+
+	# create some initial data
+	lvchange -ay $vg/$lvt
+	mkfs.xfs -f -s size=4096 "$DM_DEV_DIR/$vg/$lvt"
+	mount "$DM_DEV_DIR/$vg/$lvt" "$mount_dir"
+	cp pattern "$mount_dir/pattern1"
+	dd if=/dev/urandom of="$mount_dir/rand100M" bs=1M count=100 conv=fdatasync
+	cp pattern "$mount_dir/pattern2"
+
+	# extend while mounted
+	lvextend -L+64M $vg/${tp}_tdata "$dev4"
+	lvs -a $vg -o+devices
+
+	# verify initial data
+	diff pattern "$mount_dir/pattern1"
+	diff pattern "$mount_dir/pattern2"
+	dd of=/dev/null if="$mount_dir/rand100M" bs=1M count=100
+
+	# add more data
+	cp pattern "$mount_dir/pattern3"
+	dd if=/dev/urandom of="$mount_dir/rand8M" bs=1M count=8 conv=fdatasync
+
+	# restart the LV
+	umount "$mount_dir"
+	lvchange -an $vg/$lvt
+	lvchange -an $vg/$tp
+	lvchange -ay $vg/$lvt
+	mount "$DM_DEV_DIR/$vg/$lvt" "$mount_dir"
+
+	# verify all data
+	diff pattern "$mount_dir/pattern1"
+	diff pattern "$mount_dir/pattern2"
+	diff pattern "$mount_dir/pattern3"
+	dd of=/dev/null if="$mount_dir/rand100M" bs=1M count=100
+	dd of=/dev/null if="$mount_dir/rand8M" bs=1M count=8
+
+	# extend again while inactive
+	umount "$mount_dir"
+	lvchange -an $vg/$lvt
+	lvchange -an $vg/$tp
+	lvextend -L+64M $vg/${tp}_tdata "$dev5"
+	lvs -a $vg -o+devices
+	lvchange -ay $vg/$lvt
+	mount "$DM_DEV_DIR/$vg/$lvt" "$mount_dir"
+
+	# verify all data
+	diff pattern "$mount_dir/pattern1"
+	diff pattern "$mount_dir/pattern2"
+	diff pattern "$mount_dir/pattern3"
+	dd of=/dev/null if="$mount_dir/rand100M" bs=1M count=100
+	dd of=/dev/null if="$mount_dir/rand8M" bs=1M count=8
+
+	# add more data
+	cp pattern "$mount_dir/pattern4"
+
+	# remove the cache
+	lvconvert --splitcache $vg/${tp}_tdata
+
+	# verify all data
+	diff pattern "$mount_dir/pattern1"
+	diff pattern "$mount_dir/pattern2"
+	diff pattern "$mount_dir/pattern3"
+	diff pattern "$mount_dir/pattern4"
+	dd of=/dev/null if="$mount_dir/rand100M" bs=1M count=100
+	dd of=/dev/null if="$mount_dir/rand8M" bs=1M count=8
+
+	umount "$mount_dir"
+	lvchange -an $vg/$lvt
+	lvchange -an $vg/$tp
+	lvchange -ay $vg/$lvt
+	mount "$DM_DEV_DIR/$vg/$lvt" "$mount_dir"
+
+	# verify all data
+	diff pattern "$mount_dir/pattern1"
+	diff pattern "$mount_dir/pattern2"
+	diff pattern "$mount_dir/pattern3"
+	diff pattern "$mount_dir/pattern4"
+	dd of=/dev/null if="$mount_dir/rand100M" bs=1M count=100
+	dd of=/dev/null if="$mount_dir/rand8M" bs=1M count=8
+
+	umount "$mount_dir"
+	lvchange -an $vg/$lvt
+	lvchange -an $vg/$tp
+	lvremove $vg/$lvt
+	lvremove $vg/$tp
+	lvremove -y $vg
+}
+
+
+aux have_cache 1 10 0 || skip
+aux have_writecache 1 0 0 || skip
+which mkfs.xfs || skip
+
+mount_dir="mnt"
+mkdir -p "$mount_dir"
+
+aux prepare_devs 6 70 # want 64M of usable space from each dev
+
+# generate random data
+dd if=/dev/urandom of=pattern bs=512K count=1
+
+vgcreate $SHARED $vg "$dev1" "$dev2" "$dev3" "$dev4" "$dev5" "$dev6"
+
+# test extending cache|writecache on thin pool data
+# test type cache|writecache
+# cache with cachepool|cachevol
+# cache with writeback|writethrough
+
+# lv1 is thinpool LV: 128M
+# lv2 is fast LV:      64M
+# lv3 is thin LV:       1G
+
+# attach writecache to thinpool data
+lvcreate --type thin-pool -n $lv1 -L128M --poolmetadataspare n $vg "$dev1" "$dev2"
+lvcreate --type thin -n $lv3 -V1G --thinpool $lv1 $vg
+lvcreate -n $lv2 -L64M -an $vg "$dev3"
+lvconvert -y --type writecache --cachevol $lv2 $vg/$lv1
+lvs -a $vg -o+devices
+do_test $lv1 $lv3
+
+# attach cache/writeback (cachevol) to thinpool data
+lvcreate --type thin-pool -n $lv1 -L128M --poolmetadataspare n $vg "$dev1" "$dev2"
+lvcreate --type thin -n $lv3 -V1G --thinpool $lv1 $vg
+lvcreate -n $lv2 -L64M -an $vg "$dev3"
+lvconvert -y --type cache --cachevol $lv2 --cachemode writeback $vg/$lv1
+lvs -a $vg -o+devices
+do_test $lv1 $lv3
+
+# attach cache/writethrough (cachevol) to thinpool data
+lvcreate --type thin-pool -n $lv1 -L128M --poolmetadataspare n $vg "$dev1" "$dev2"
+lvcreate --type thin -n $lv3 -V1G --thinpool $lv1 $vg
+lvcreate -n $lv2 -L64M -an $vg "$dev3"
+lvconvert -y --type cache --cachevol $lv2 --cachemode writethrough $vg/$lv1
+lvs -a $vg -o+devices
+do_test $lv1 $lv3
+
+# attach cache (cachepool) to thinpool data
+lvcreate --type thin-pool -n $lv1 -L128M --poolmetadataspare n $vg "$dev1" "$dev2"
+lvcreate --type thin -n $lv3 -V1G --thinpool $lv1 $vg
+lvcreate -y --type cache-pool -n $lv2 -L64M --poolmetadataspare n $vg "$dev3" "$dev6"
+lvconvert -y --type cache --cachepool $lv2 --poolmetadataspare n $vg/$lv1
+lvs -a $vg -o+devices
+do_test $lv1 $lv3
+
+# FIXME: test these thin pool data extensions done by dmeventd
+
+vgremove -f $vg
+