Archipelago » qemu

#!/bin/bash

#

# qcow2 error path testing

#

# Copyright (C) 2010 Red Hat, Inc.

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

#

# creator

owner=kwolf@redhat.com

seq=`basename $0`

echo "QA output created by $seq"

here=`pwd`

tmp=/tmp/$$

status=1	# failure is the default!

_cleanup()

{

	_cleanup_test_img

    rm $TEST_DIR/blkdebug.conf

}

trap "_cleanup; exit \$status" 0 1 2 3 15

# get standard environment, filters and checks

. ./common.rc

. ./common.filter

. ./common.pattern

# Currently only qcow2 supports rebasing

_supported_fmt qcow2

_supported_proto generic

_supported_os Linux

echo "Errors while writing 128 kB"

echo

CLUSTER_SIZE=1024

BLKDBG_TEST_IMG="blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG"

for event in \

    l1_update \

    \

    l2_load \

    l2_update \

    l2_alloc.write \

    \

    write_aio \

    \

    refblock_load \

    refblock_update_part \

    refblock_alloc \

    \

    cluster_alloc \

do

for errno in 5 28; do

for imm in off; do

for once in on off; do

for vmstate in "" "-b"; do

cat > $TEST_DIR/blkdebug.conf <<EOF

[inject-error]

event = "$event"

errno = "$errno"

immediately = "$imm"

once ="$once"

EOF

_make_test_img 1G

echo

echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate"

# We want to catch a simple L2 update, not the allocation of the first L2 table

if [ "$event" == "l2_update" ]; then

    $QEMU_IO -c "write $vmstate 0 512" $TEST_IMG > /dev/null 2>&1

fi

$QEMU_IO -c "write $vmstate 0 128k " $BLKDBG_TEST_IMG | _filter_qemu_io

# l2_load is not called on allocation, so issue a second write

# Reads are another path to trigger l2_load, so do a read, too

if [ "$event" == "l2_load" ]; then

    $QEMU_IO -c "write $vmstate 0 128k " $BLKDBG_TEST_IMG | _filter_qemu_io

    $QEMU_IO -c "read $vmstate 0 128k " $BLKDBG_TEST_IMG | _filter_qemu_io

fi

$QEMU_IMG check $TEST_IMG 2>&1 | grep -v "refcount=1 reference=0"

done

done

done

done

done

echo

echo === Refcout table growth tests ===

echo

CLUSTER_SIZE=512

for event in \

    refblock_alloc.hookup \

    refblock_alloc.write \

    refblock_alloc.write_blocks \

    refblock_alloc.write_table \

    refblock_alloc.switch_table \

do

# This one takes a while, so let's test only one error code (ENOSPC should

# never be generated by qemu, so it's probably a good choice)

for errno in 28; do

for imm in off; do

for once in on off; do

for vmstate in "" "-b"; do

cat > $TEST_DIR/blkdebug.conf <<EOF

[inject-error]

event = "$event"

errno = "$errno"

immediately = "$imm"

once = "$once"

EOF

_make_test_img 1G

echo

echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate"

$QEMU_IO -c "write $vmstate 0 64M" $BLKDBG_TEST_IMG | _filter_qemu_io

$QEMU_IMG check $TEST_IMG 2>&1 | grep -v "refcount=1 reference=0"

done

done

done

done

done

echo

echo === L1 growth tests ===

echo

CLUSTER_SIZE=1024

for event in \

    l1_grow.alloc_table \

    l1_grow.write_table \

    l1_grow.activate_table \

do

for errno in 5 28; do

for imm in off; do

for once in on off; do

cat > $TEST_DIR/blkdebug.conf <<EOF

[inject-error]

event = "$event"

errno = "$errno"

immediately = "$imm"

once = "$once"

EOF

_make_test_img 1G

echo

echo "Event: $event; errno: $errno; imm: $imm; once: $once"

$QEMU_IO -c "write -b 0 64k" $BLKDBG_TEST_IMG | _filter_qemu_io

$QEMU_IMG check $TEST_IMG 2>&1 | grep -v "refcount=1 reference=0"

done

done

done

done

# success, all done

echo "*** done"

rm -f $seq.full

status=0