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iotests/028: Add test for cross-base-EOF reads

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Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200728120806.265916-3-mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Tested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Tested-by: Claudio Fontana <cfontana@suse.de>
This commit is contained in:
Max Reitz 2020-07-28 14:08:05 +02:00
parent 134b7dec6e
commit ae159450e1
2 changed files with 30 additions and 0 deletions
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19
tests/qemu-iotests/028
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@ -142,6 +142,25 @@ TEST_IMG="${TEST_IMG}.copy" io_zero readv $(( offset + 32 * 1024 )) 512 1024 32
_check_test_img
echo
echo '=== Reading across backing EOF in one operation ==='
echo
# Use a cluster boundary as the base end here
base_size=$((3 * 1024 * 1024 * 1024))
TEST_IMG="$TEST_IMG.base" _make_test_img $base_size
_make_test_img -b "$TEST_IMG.base" -F $IMGFMT $image_size
# Write 16 times 42 at the end of the base image
$QEMU_IO -c "write -P 42 $((base_size - 16)) 16" "$TEST_IMG.base" \
| _filter_qemu_io
# Read 32 bytes across the base EOF from the top;
# should be 16 times 0x2a, then 16 times 0x00
$QEMU_IO -c "read -v $((base_size - 16)) 32" "$TEST_IMG" \
| _filter_qemu_io
# success, all done
echo "*** done"
rm -f $seq.full

11
tests/qemu-iotests/028.out
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@ -730,4 +730,15 @@ read 512/512 bytes at offset 3221257728
read 512/512 bytes at offset 3221258752
512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
No errors were found on the image.
=== Reading across backing EOF in one operation ===
Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=3221225472
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=4294968832 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT
wrote 16/16 bytes at offset 3221225456
16 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
bffffff0: 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a ................
c0000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
read 32/32 bytes at offset 3221225456
32 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
*** done