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| author | Max Reitz | 2020-07-28 14:08:05 +0200 |
|---|---|---|
| committer | Max Reitz | 2020-07-28 15:28:56 +0200 |
| commit | ae159450e161b3e1e2c5b815d19632abbbbcd1a1 (patch) | |
| tree | 36f1167c8e0f801c1d5ddee1d103fb8c1ff3390b /tests/qemu-iotests/028 | |
| parent | block: Fix bdrv_aligned_p*v() for qiov_offset != 0 (diff) | |
| download | qemu-ae159450e161b3e1e2c5b815d19632abbbbcd1a1.tar.gz qemu-ae159450e161b3e1e2c5b815d19632abbbbcd1a1.tar.xz qemu-ae159450e161b3e1e2c5b815d19632abbbbcd1a1.zip | |
iotests/028: Add test for cross-base-EOF reads
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>
Diffstat (limited to 'tests/qemu-iotests/028')
| -rwxr-xr-x | tests/qemu-iotests/028 | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/qemu-iotests/028 b/tests/qemu-iotests/028 index 5d043cef92..6dd3ae09a3 100755 --- a/tests/qemu-iotests/028 +++ b/tests/qemu-iotests/028 @@ -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 |