[lvm-devel] dev-mornfall-lvmcache - tests: snapshot testing

[Petr Rockai]

Gitweb:        http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=a766ea16b86501b6241cf7ba96dd0f28e1cf35b7
Commit:        a766ea16b86501b6241cf7ba96dd0f28e1cf35b7
Parent:        cd9350198e3178251a54c442183465e8b7719251
Author:        Zdenek Kabelac <zkabelac at redhat.com>
AuthorDate:    Wed May 29 23:36:44 2013 +0200
Committer:     Zdenek Kabelac <zkabelac at redhat.com>
CommitterDate: Thu May 30 17:35:23 2013 +0200

tests: snapshot testing

---
 test/shell/snapshots-usage.sh |   87 +++++++++++++++++++++++++++++++++++++++++
 1 files changed, 87 insertions(+), 0 deletions(-)

diff --git a/test/shell/snapshots-usage.sh b/test/shell/snapshots-usage.sh
new file mode 100644
index 0000000..ae08378
--- /dev/null
+++ b/test/shell/snapshots-usage.sh
@@ -0,0 +1,87 @@
+#!/bin/bash
+# Copyright (C) 2013 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+# no automatic extensions please
+
+. lib/test
+
+fill() {
+	dd if=/dev/zero of=$DM_DEV_DIR/$vg1/lvol0 bs=$1 count=1
+}
+
+aux prepare_vg
+
+lvcreate -s -l 100%FREE -n $lv $vg --virtualsize 15P
+
+aux lvmconf "activation/snapshot_autoextend_percent = 20" \
+            "activation/snapshot_autoextend_threshold = 50"
+aux lvmconf 'devices/filter = [ "a|dev/mapper/.*$|", "a|dev/LVMTEST|", "r|.*|" ]'
+aux lvmconf 'devices/global_filter = [ "a|dev/mapper/.*$|", "a|dev/LVMTEST|", "r|.*|" ]'
+
+# Check usability with smallest extent size
+pvcreate --setphysicalvolumesize 4T $DM_DEV_DIR/$vg/$lv
+vgcreate -s 1K $vg1 $DM_DEV_DIR/$vg/$lv
+
+# Check border size
+lvcreate -aey -L4095G $vg1
+lvcreate -s -L100K $vg1/lvol0
+fill 1K
+check lv_field $vg1/lvol1 data_percent "12.00"
+lvremove -ff $vg1
+
+# Create 1KB snapshot
+lvcreate -aey -l1 $vg1
+not lvcreate -s -l1 $vg1/lvol0
+not lvcreate -s -l3 $vg1/lvol0
+lvcreate -s -l30 $vg1/lvol0
+check lv_field $vg1/lvol1 size "12.00k"
+
+not lvcreate -s -c512 -l512 $vg1/lvol0
+lvcreate -aey -s -c128 -l1700 $vg1/lvol0
+# 3 * 128
+check lv_field $vg1/lvol2 size "384.00k"
+
+lvremove -ff $vg1
+
+lvcreate -aey -l20 $vg1
+lvcreate -s -l12 $vg1/lvol0
+
+# Fill 1KB -> 100% snapshot (1x 4KB chunk)
+fill 1K
+check lv_field $vg1/lvol1 data_percent "100.00"
+
+# Check it resizes 100% full valid snapshot
+lvextend --use-policies $vg1/lvol1
+check lv_field $vg1/lvol1 data_percent "80.00"
+
+fill 4K
+lvextend --use-policies $vg1/lvol1
+check lv_field $vg1/lvol1 size "18.00k"
+
+lvextend -l+33 $vg1/lvol1
+check lv_field $vg1/lvol1 size "28.00k"
+
+fill 20K
+vgremove -ff $vg1
+
+# Check usability with large extent size
+pvcreate $DM_DEV_DIR/$vg/$lv
+vgcreate -s 4G $vg1 $DM_DEV_DIR/$vg/$lv
+
+lvcreate -aey -l1 $vg1
+lvcreate -s -l1 $vg1/lvol0
+check lv_field $vg1/lvol1 size "4.00g"
+
+lvcreate -aey -V15E -l1 -s $vg1
+check lv_field $vg1/lvol2 origin_size "15.00e"
+
+vgremove -ff $vg1
+vgremove -ff $vg