[lvm-devel] master - tests: add metadata-old.sh

[David Teigland]

Gitweb:        https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=9156640b6083690a7341d6073c491272f1187282
Commit:        9156640b6083690a7341d6073c491272f1187282
Parent:        d3636ff8322f17bac66ac6fe79e2c0710d645260
Author:        David Teigland <teigland at redhat.com>
AuthorDate:    Fri May 24 15:18:18 2019 -0500
Committer:     David Teigland <teigland at redhat.com>
CommitterDate: Fri Jun 7 15:54:04 2019 -0500

tests: add metadata-old.sh

---
 test/shell/metadata-old.sh |  177 ++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 177 insertions(+), 0 deletions(-)

diff --git a/test/shell/metadata-old.sh b/test/shell/metadata-old.sh
new file mode 100644
index 0000000..53133bc
--- /dev/null
+++ b/test/shell/metadata-old.sh
@@ -0,0 +1,177 @@
+#!/usr/bin/env bash
+
+# Copyright (C) 2008-2013,2018 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
+
+. lib/inittest
+
+aux prepare_devs 3
+get_devs
+
+#
+# Test "old metadata" repair which occurs when the VG is written
+# and one of the PVs in the VG does not get written to, and then
+# the PV reappears with the old metadata.  This can happen if
+# a command is killed or crashes after writing new metadata to
+# only some of the PVs in the VG, or if a PV is temporarily
+# inaccessible while a VG is written.
+#
+
+vgcreate $SHARED $vg "$dev1" "$dev2" "$dev3"
+
+#
+# Test that vgck --updatemetadata will update old metadata.
+#
+
+lvcreate -n $lv1 -l1 -an $vg "$dev1"
+lvcreate -n $lv2 -l1 -an $vg "$dev1"
+
+aux disable_dev "$dev2"
+
+pvs
+pvs "$dev1"
+not pvs "$dev2"
+pvs "$dev3"
+lvs $vg/$lv1
+lvs $vg/$lv2
+
+lvremove $vg/$lv2
+
+aux enable_dev "$dev2"
+
+pvs 2>&1 | tee out
+grep "ignoring metadata seqno" out
+pvs "$dev1"
+pvs "$dev2"
+pvs "$dev3"
+
+lvs $vg/$lv1
+not lvs $vg/$lv2
+
+# fixes the old metadata on dev1
+vgck --updatemetadata $vg
+
+pvs 2>&1 | tee out
+not grep "ignoring metadata seqno" out
+pvs "$dev1"
+pvs "$dev2"
+pvs "$dev3"
+
+lvs $vg/$lv1
+not lvs $vg/$lv2
+
+#
+# Test that any writing command will also update the
+# old metadata.
+#
+
+lvcreate -n $lv2 -l1 -an $vg "$dev1"
+
+aux disable_dev "$dev2"
+
+pvs
+pvs "$dev1"
+not pvs "$dev2"
+pvs "$dev3"
+lvs $vg/$lv1
+lvs $vg/$lv2
+
+lvremove $vg/$lv2
+
+aux enable_dev "$dev2"
+
+pvs 2>&1 | tee out
+grep "ignoring metadata seqno" out
+pvs "$dev1"
+pvs "$dev2"
+pvs "$dev3"
+
+lvs $vg/$lv1
+not lvs $vg/$lv2
+
+# fixes the old metadata on dev1
+lvcreate -n $lv3 -l1 -an $vg
+
+pvs 2>&1 | tee out
+not grep "ignoring metadata seqno" out
+pvs "$dev1"
+pvs "$dev2"
+pvs "$dev3"
+
+lvs $vg/$lv1
+not lvs $vg/$lv2
+
+vgremove -ff $vg
+
+#
+# First two PVs with one mda, where both have old metadata.
+# Third PV with two mdas, where the first mda has old
+# metadata, and the second mda has current metadata.
+#
+
+dd if=/dev/zero of="$dev1" || true
+dd if=/dev/zero of="$dev2" || true
+dd if=/dev/zero of="$dev3" || true
+
+pvcreate "$dev1"
+pvcreate "$dev2"
+pvcreate --pvmetadatacopies 2 "$dev3"
+
+vgcreate $SHARED $vg "$dev1" "$dev2" "$dev3"
+
+lvcreate -n $lv1 -l1 -an $vg "$dev3"
+lvcreate -n $lv2 -l1 -an $vg "$dev3"
+
+# Save the metadata at this point...
+dd if="$dev1" of=meta1 bs=4k count=4
+dd if="$dev2" of=meta2 bs=4k count=4
+dd if="$dev3" of=meta3 bs=4k count=4
+
+# and now change metadata so the saved copies are old
+lvcreate -n $lv3 -l1 -an $vg "$dev3"
+
+# Copy the saved metadata back to the three
+# devs first mda, leaving the second mda on
+# dev3 as the only latest copy of the metadata.
+
+dd if=meta1 of="$dev1"
+dd if=meta2 of="$dev2"
+dd if=meta3 of="$dev3"
+
+pvs 2>&1 | tee out
+grep "ignoring metadata seqno" out
+pvs "$dev1"
+pvs "$dev2"
+pvs "$dev3"
+
+# We still see the three LVs since we are using
+# the latest copy of metadata from dev3:mda2
+
+lvs $vg/$lv1
+lvs $vg/$lv2
+lvs $vg/$lv3
+
+# This command which writes the VG should update
+# all of the old copies.
+lvcreate -n $lv4 -l1 -an $vg
+
+pvs 2>&1 | tee out
+not grep "ignoring metadata seqno" out
+pvs "$dev1"
+pvs "$dev2"
+pvs "$dev3"
+
+lvs $vg/$lv1
+lvs $vg/$lv2
+lvs $vg/$lv3
+lvs $vg/$lv4
+
+vgchange -an $vg
+vgremove -ff $vg