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81 lines
1.8 KiB
Bash
81 lines
1.8 KiB
Bash
#!/usr/bin/env bash
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# Copyright (C) 2008-2013,2018 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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. lib/inittest
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aux prepare_devs 3
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get_devs
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#
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# Test corrupted mda_header.version field, which also
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# causes the mda_header checksum to be bad.
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#
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# FIXME: if a VG has only a single PV, this repair
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# doesn't work since there's no good PV to get
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# metadata from. A more advanced repair capability
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# is needed.
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#
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dd if=/dev/zero of="$dev1" || true
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dd if=/dev/zero of="$dev2" || true
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dd if=/dev/zero of="$dev3" || true
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vgcreate $SHARED $vg "$dev1" "$dev2" "$dev3"
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pvs
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if [ -e "/usr/bin/xxd" ]; then
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# read mda_header which is 4k from start of disk
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dd if="$dev1" of=meta1 bs=4k count=1 skip=1
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# convert binary to text
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xxd meta1 > meta1.txt
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# Corrupt mda_header by changing the version field from 0100 to 0200
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sed 's/0000010:\ 304e\ 2a3e\ 0100\ 0000\ 0010\ 0000\ 0000\ 0000/0000010:\ 304e\ 2a3e\ 0200\ 0000\ 0010\ 0000\ 0000\ 0000/' meta1.txt > meta1-bad.txt
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# convert text to binary
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xxd -r meta1-bad.txt > meta1-bad
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# write bad mda_header back to disk
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dd if=meta1-bad of="$dev1" bs=4k seek=1
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# pvs reports bad metadata header
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pvs 2>&1 | tee out
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grep "bad metadata header" out
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fi
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pvs "$dev1"
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pvs "$dev2"
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pvs "$dev3"
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# bad metadata in one mda doesn't prevent using
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# the VG since other mdas are fine and usable
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lvcreate -l1 $vg
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vgck --updatemetadata $vg
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pvs 2>&1 | tee out
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not grep "bad metadata header" out
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pvs "$dev1"
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pvs "$dev2"
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pvs "$dev3"
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vgchange -an $vg
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vgremove -ff $vg
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