Block patches for 5.1.0:

- Fix block I/O for split transfers
 - Fix iotest 197 for non-qcow2 formats
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Merge remote-tracking branch 'remotes/maxreitz/tags/pull-block-2020-07-28' into staging

Block patches for 5.1.0:
- Fix block I/O for split transfers
- Fix iotest 197 for non-qcow2 formats

# gpg: Signature made Tue 28 Jul 2020 14:45:28 BST
# gpg:                using RSA key 91BEB60A30DB3E8857D11829F407DB0061D5CF40
# gpg:                issuer "mreitz@redhat.com"
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>" [full]
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1  1829 F407 DB00 61D5 CF40

* remotes/maxreitz/tags/pull-block-2020-07-28:
  iotests/197: Fix for non-qcow2 formats
  iotests/028: Add test for cross-base-EOF reads
  block: Fix bdrv_aligned_p*v() for qiov_offset != 0

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2020-07-28 18:00:21 +01:00
commit 0c4fa5bc1a
5 changed files with 42 additions and 8 deletions

View File

@ -1524,12 +1524,13 @@ static int coroutine_fn bdrv_aligned_preadv(BdrvChild *child,
assert(num);
ret = bdrv_driver_preadv(bs, offset + bytes - bytes_remaining,
num, qiov, bytes - bytes_remaining, 0);
num, qiov,
qiov_offset + bytes - bytes_remaining, 0);
max_bytes -= num;
} else {
num = bytes_remaining;
ret = qemu_iovec_memset(qiov, bytes - bytes_remaining, 0,
bytes_remaining);
ret = qemu_iovec_memset(qiov, qiov_offset + bytes - bytes_remaining,
0, bytes_remaining);
}
if (ret < 0) {
goto out;
@ -2032,7 +2033,8 @@ static int coroutine_fn bdrv_aligned_pwritev(BdrvChild *child,
}
ret = bdrv_driver_pwritev(bs, offset + bytes - bytes_remaining,
num, qiov, bytes - bytes_remaining,
num, qiov,
qiov_offset + bytes - bytes_remaining,
local_flags);
if (ret < 0) {
break;

View File

@ -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

View File

@ -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

View File

@ -114,9 +114,11 @@ echo
# Force compat=1.1, because writing zeroes on a v2 image without a
# backing file would just result in an unallocated cluster
_make_test_img -o compat=1.1 1024
$QEMU_IO -f $IMGFMT -C -c 'read 0 1024' "$TEST_IMG" | _filter_qemu_io
$QEMU_IO -f $IMGFMT -c map "$TEST_IMG"
# (Also, note that this is really a pure qcow2 test.)
IMGPROTO=file IMGFMT=qcow2 TEST_IMG_FILE="$TEST_WRAP" \
_make_test_img --no-opts -o compat=1.1 1024
$QEMU_IO -f qcow2 -C -c 'read 0 1024' "$TEST_WRAP" | _filter_qemu_io
$QEMU_IO -f qcow2 -c map "$TEST_WRAP"
_check_test_img
# success, all done

View File

@ -26,7 +26,7 @@ Images are identical.
=== Partial final cluster ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1024
Formatting 'TEST_DIR/t.wrap.IMGFMT', fmt=IMGFMT size=1024
read 1024/1024 bytes at offset 0
1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
1 KiB (0x400) bytes allocated at offset 0 bytes (0x0)