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89 lines
2.1 KiB
Bash
89 lines
2.1 KiB
Bash
#!/usr/bin/env bash
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# Copyright (C) 2008 Red Hat, Inc. All rights reserved.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions
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# of the GNU General Public License v.2.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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SKIP_WITH_LVMPOLLD=1
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. lib/inittest
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xxd -v || skip
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aux prepare_devs 1 256
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get_devs
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# Fill with random data so if the space between metadata
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# copies are not zeroed the grep for zeros will fail.
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dd if=/dev/urandom of="$dev1" bs=1M count=1 || true
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dd if=/dev/urandom of="$dev1" bs=1M skip=15 count=1 || true
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pvcreate --pvmetadatacopies 2 "$dev1"
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vgcreate $SHARED "$vg" "$dev1"
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for i in $(seq 1 50); do lvcreate -l1 -an $vg; done
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# Check metadata copies are separated by zeroes in the first mda
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dd if="$dev1" of=meta.raw bs=1M count=1
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xxd meta.raw > meta.txt
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# to help debug if the next grep fails
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ls -l meta.txt
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head -n 100 meta.txt
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grep -A4 -B4 '01200:' meta.txt
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_vg="$vg "
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_vg="${_vg:0:16}"
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grep -B1 "$_vg" meta.txt > meta.vg
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cat meta.vg
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grep -v "$_vg" meta.vg > meta.zeros
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cat meta.zeros
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grep '0000 0000 0000 0000 0000 0000 0000 0000' meta.zeros > meta.count
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# wc will often equal 51, but some natural variability in
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# metadata locations/content mean that some lines do not
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# require a full line of zero padding, and will not match
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# the grep for a full row of zeros. So, check that more
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# than 20 lines match the full row of zeros (this is a
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# random choice, and this isn't a perfect way to test for
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# zero padding.)
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test "$(wc -l < meta.count)" -gt 20
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rm meta.raw meta.txt meta.vg meta.zeros meta.count
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#
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# Check metadata copies are separated by zeroes in the second mda
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#
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dd if="$dev1" of=meta.raw bs=1M seek=15 count=1
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xxd meta.raw > meta.txt
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grep -B1 "$_vg" meta.txt > meta.vg
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cat meta.vg
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grep -v "$_vg" meta.vg > meta.zeros
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cat meta.zeros
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grep '0000 0000 0000 0000 0000 0000 0000 0000' meta.zeros > meta.count
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test "$(wc -l < meta.count)" -gt 20
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vgremove -ff $vg
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