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iotests: Add test for failing qemu-img commit

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Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20170616135847.17726-1-mreitz@redhat.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Max Reitz 2017-06-16 15:58:47 +02:00
parent 1b76e8389b
commit 2b7731938d
2 changed files with 44 additions and 0 deletions
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27
tests/qemu-iotests/020
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@ -110,6 +110,33 @@ for offset in $TEST_OFFSETS; do
io_zero readv $(( offset + 64 * 1024 + 65536 * 4 )) 65536 65536 1
done
_check_test_img
_cleanup
TEST_IMG=$TEST_IMG_SAVE
echo
echo 'Testing failing commit'
echo
# Create an image with a null backing file to which committing will fail (with
# ENOSPC so we can distinguish the result from some generic EIO which may be
# generated anywhere in the block layer)
_make_test_img -b "json:{'driver': 'raw',
'file': {
'driver': 'blkdebug',
'inject-error': [{
'event': 'write_aio',
'errno': 28,
'once': true
}],
'image': {
'driver': 'null-co'
}}}"
# Just write anything so committing will not be a no-op
$QEMU_IO -c 'writev 0 64k' "$TEST_IMG" | _filter_qemu_io
$QEMU_IMG commit "$TEST_IMG"
_cleanup_test_img
# success, all done
echo "*** done"