diff --git a/test/shell/metadata-zero-space.sh b/test/shell/metadata-zero-space.sh new file mode 100644 index 000000000..847ef4475 --- /dev/null +++ b/test/shell/metadata-zero-space.sh @@ -0,0 +1,86 @@ +#!/usr/bin/env bash + +# Copyright (C) 2008 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 + +. lib/inittest + +aux prepare_devs 1 256 +get_devs + +# Fill with random data so if the space between metadata +# copies are not zeroed the grep for zeros will fail. +dd if=/dev/urandom of="$dev1" bs=1M || true + +pvcreate --pvmetadatacopies 2 "$dev1" + +vgcreate $SHARED "$vg" "$dev1" + +for i in `seq 1 50`; do lvcreate -l1 -an $vg; done + +if [ -e "/usr/bin/xxd" ]; then + +# Check metadata copies are separated by zeroes in the first mda + +dd if="$dev1" of=meta.raw bs=1M count=1 + +xxd meta.raw > meta.txt + +grep -B1 "$vg {" meta.txt > meta.vg + +cat meta.vg + +grep -v $vg meta.vg > meta.zeros + +cat meta.zeros + +grep '0000 0000 0000 0000 0000 0000 0000 0000' meta.zeros > meta.count + +cat meta.count | wc -l + +# wc will often equal 51, but some natural variability in +# metadata locations/content mean that some lines do not +# require a full line of zero padding, and will not match +# the grep for a full row of zeros. So, check that more +# than 20 lines match the full row of zeros (this is a +# random choice, and this isn't a perfect way to test for +# zero padding.) + +test "$(cat meta.count | wc -l)" -gt 20 + +rm meta.raw meta.txt meta.vg meta.zeros meta.count + +# +# Check metadata copies are separated by zeroes in the second mda +# + +dd if="$dev1" of=meta.raw bs=1M seek=15 count=1 + +xxd meta.raw > meta.txt + +grep -B1 "$vg {" meta.txt > meta.vg + +cat meta.vg + +grep -v $vg meta.vg > meta.zeros + +cat meta.zeros + +grep '0000 0000 0000 0000 0000 0000 0000 0000' meta.zeros > meta.count + +cat meta.count | wc -l + +test "$(cat meta.count | wc -l)" -gt 20 + +fi + +vgremove -ff $vg