qemu-iotests: Use zero-based offsets for IO patterns

The io_pattern style functions have the following loop:

  for i in `seq 1 $count`; do
      echo ... $(( start + i * step )) ...
  done

Offsets are 1-based so start=1024, step=512, count=4 yields:
1536, 2048, 2560, 3072

Normally we expect:
1024, 1536, 2048, 2560

Most tests ignore this detail, which means that they perform I/O to a
slightly different range than expected by the test author.

Later on things got less innocent and tests started trying to compensate
for the 1-based indexing.  This included negative start values in test
024 and my own attempt with count-1 in test 028!

The end result is that tests that use io_pattern are hard to reason
about and don't work the way you'd expect.  It's time to clean this mess
up.

This patch switches io_pattern to 0-based offsets.  This requires
adjusting the golden outputs since I/O ranges are now shifted and output
differs.

Verifying these output diffs is easy, however.  Each diff hunk moves one
I/O from beyond the end of the pattern range to the beginning.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

tests/qemu-iotests/017.out

@@ -3,6 +3,8 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=6442450944
 Filling base image
 
 === IO: pattern 0
+qemu-io> wrote 512/512 bytes at offset 0
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 1024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 2048
@@ -129,12 +131,12 @@ qemu-io> wrote 512/512 bytes at offset 63488
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 64512
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 65536
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 128
-qemu-io> wrote 65536/65536 bytes at offset 131072
+qemu-io> wrote 65536/65536 bytes at offset 65536
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
+qemu-io> wrote 512/512 bytes at offset 4294967296
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294968320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294969344
@@ -261,10 +263,8 @@ qemu-io> wrote 512/512 bytes at offset 4295030784
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4295031808
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 4295032832
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 128
-qemu-io> wrote 65536/65536 bytes at offset 4295098368
+qemu-io> wrote 65536/65536 bytes at offset 4295032832
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> No errors were found on the image.
 Creating test image with backing file
@@ -273,6 +273,8 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=6442450944 backing_file='TEST_DI
 Filling test image
 
 === IO: pattern 1
+qemu-io> wrote 512/512 bytes at offset 512
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 1536
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 2560
@@ -399,12 +401,12 @@ qemu-io> wrote 512/512 bytes at offset 64000
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 65024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 66048
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> wrote 65536/65536 bytes at offset 196608
+qemu-io> wrote 65536/65536 bytes at offset 131072
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 1
+qemu-io> wrote 512/512 bytes at offset 4294967808
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294968832
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294969856
@@ -531,15 +533,15 @@ qemu-io> wrote 512/512 bytes at offset 4295031296
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4295032320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 4295033344
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> wrote 65536/65536 bytes at offset 4295163904
+qemu-io> wrote 65536/65536 bytes at offset 4295098368
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> No errors were found on the image.
 Reading
 
 === IO: pattern 0
+qemu-io> read 512/512 bytes at offset 0
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 1024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 2048
@@ -666,9 +668,9 @@ qemu-io> read 512/512 bytes at offset 63488
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 64512
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 65536
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 1
+qemu-io> read 512/512 bytes at offset 512
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 1536
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 2560
@@ -795,18 +797,18 @@ qemu-io> read 512/512 bytes at offset 64000
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 65024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 66048
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 128
+qemu-io> read 65536/65536 bytes at offset 65536
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+qemu-io> === IO: pattern 0
 qemu-io> read 65536/65536 bytes at offset 131072
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 196608
+qemu-io> read 65536/65536 bytes at offset 327680
-64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 393216
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
+qemu-io> read 512/512 bytes at offset 4294967296
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294968320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294969344
@@ -933,9 +935,9 @@ qemu-io> read 512/512 bytes at offset 4295030784
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4295031808
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 4295032832
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 1
+qemu-io> read 512/512 bytes at offset 4294967808
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294968832
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294969856
@@ -1062,16 +1064,14 @@ qemu-io> read 512/512 bytes at offset 4295031296
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4295032320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 4295033344
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 128
+qemu-io> read 65536/65536 bytes at offset 4295032832
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+qemu-io> === IO: pattern 0
 qemu-io> read 65536/65536 bytes at offset 4295098368
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 4295163904
+qemu-io> read 65536/65536 bytes at offset 4295294976
-64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 4295360512
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> No errors were found on the image.
 *** done

tests/qemu-iotests/018.out

@@ -3,6 +3,8 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=6442450944
 Filling base image
 
 === IO: pattern 0
+qemu-io> wrote 512/512 bytes at offset 0
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 1024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 2048
@@ -129,12 +131,12 @@ qemu-io> wrote 512/512 bytes at offset 63488
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 64512
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 65536
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 128
-qemu-io> wrote 65536/65536 bytes at offset 131072
+qemu-io> wrote 65536/65536 bytes at offset 65536
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
+qemu-io> wrote 512/512 bytes at offset 4294967296
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294968320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294969344
@@ -261,10 +263,8 @@ qemu-io> wrote 512/512 bytes at offset 4295030784
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4295031808
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 4295032832
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 128
-qemu-io> wrote 65536/65536 bytes at offset 4295098368
+qemu-io> wrote 65536/65536 bytes at offset 4295032832
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> No errors were found on the image.
 Creating test image with backing file
@@ -273,6 +273,8 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=6442450944 backing_file='TEST_DI
 Filling test image
 
 === IO: pattern 1
+qemu-io> wrote 512/512 bytes at offset 512
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 1536
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 2560
@@ -399,12 +401,12 @@ qemu-io> wrote 512/512 bytes at offset 64000
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 65024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 66048
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> wrote 65536/65536 bytes at offset 196608
+qemu-io> wrote 65536/65536 bytes at offset 131072
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 1
+qemu-io> wrote 512/512 bytes at offset 4294967808
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294968832
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294969856
@@ -531,15 +533,15 @@ qemu-io> wrote 512/512 bytes at offset 4295031296
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4295032320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 4295033344
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> wrote 65536/65536 bytes at offset 4295163904
+qemu-io> wrote 65536/65536 bytes at offset 4295098368
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> No errors were found on the image.
 Reading
 
 === IO: pattern 0
+qemu-io> read 512/512 bytes at offset 0
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 1024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 2048
@@ -666,9 +668,9 @@ qemu-io> read 512/512 bytes at offset 63488
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 64512
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 65536
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 1
+qemu-io> read 512/512 bytes at offset 512
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 1536
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 2560
@@ -795,18 +797,18 @@ qemu-io> read 512/512 bytes at offset 64000
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 65024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 66048
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 128
+qemu-io> read 65536/65536 bytes at offset 65536
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+qemu-io> === IO: pattern 0
 qemu-io> read 65536/65536 bytes at offset 131072
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 196608
+qemu-io> read 65536/65536 bytes at offset 327680
-64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 393216
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
+qemu-io> read 512/512 bytes at offset 4294967296
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294968320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294969344
@@ -933,9 +935,9 @@ qemu-io> read 512/512 bytes at offset 4295030784
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4295031808
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 4295032832
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 1
+qemu-io> read 512/512 bytes at offset 4294967808
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294968832
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294969856
@@ -1062,16 +1064,14 @@ qemu-io> read 512/512 bytes at offset 4295031296
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4295032320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 4295033344
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 128
+qemu-io> read 65536/65536 bytes at offset 4295032832
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+qemu-io> === IO: pattern 0
 qemu-io> read 65536/65536 bytes at offset 4295098368
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 4295163904
+qemu-io> read 65536/65536 bytes at offset 4295294976
-64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 4295360512
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> No errors were found on the image.
 *** done

tests/qemu-iotests/019.out

@@ -3,6 +3,8 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=6442450944 cluster_size=65536
 Filling base image
 
 === IO: pattern 42
+qemu-io> wrote 512/512 bytes at offset 0
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 1024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 2048
@@ -129,12 +131,12 @@ qemu-io> wrote 512/512 bytes at offset 63488
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 64512
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 65536
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 42
-qemu-io> wrote 65536/65536 bytes at offset 1114112
+qemu-io> wrote 65536/65536 bytes at offset 1048576
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 42
+qemu-io> wrote 512/512 bytes at offset 4294967296
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294968320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294969344
@@ -261,10 +263,8 @@ qemu-io> wrote 512/512 bytes at offset 4295030784
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4295031808
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 4295032832
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 42
-qemu-io> wrote 65536/65536 bytes at offset 4296081408
+qemu-io> wrote 65536/65536 bytes at offset 4296015872
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> No errors were found on the image.
 Creating test image with backing file
@@ -273,6 +273,8 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=6442450944 backing_file='TEST_DI
 Filling test image
 
 === IO: pattern 43
+qemu-io> wrote 512/512 bytes at offset 512
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 1536
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 2560
@@ -399,12 +401,12 @@ qemu-io> wrote 512/512 bytes at offset 64000
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 65024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 66048
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 43
-qemu-io> wrote 65536/65536 bytes at offset 1179648
+qemu-io> wrote 65536/65536 bytes at offset 1114112
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 43
+qemu-io> wrote 512/512 bytes at offset 4294967808
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294968832
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294969856
@@ -531,10 +533,8 @@ qemu-io> wrote 512/512 bytes at offset 4295031296
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4295032320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 4295033344
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 43
-qemu-io> wrote 65536/65536 bytes at offset 4296146944
+qemu-io> wrote 65536/65536 bytes at offset 4296081408
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> No errors were found on the image.
 
@@ -547,6 +547,8 @@ qemu-io> qemu-io> 0/128 sectors allocated at offset 4.001 GiB
 qemu-io> Reading
 
 === IO: pattern 42
+qemu-io> read 512/512 bytes at offset 0
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 1024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 2048
@@ -673,9 +675,9 @@ qemu-io> read 512/512 bytes at offset 63488
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 64512
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 65536
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 43
+qemu-io> read 512/512 bytes at offset 512
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 1536
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 2560
@@ -802,18 +804,18 @@ qemu-io> read 512/512 bytes at offset 64000
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 65024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 66048
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 42
-qemu-io> read 65536/65536 bytes at offset 1114112
+qemu-io> read 65536/65536 bytes at offset 1048576
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 43
-qemu-io> read 65536/65536 bytes at offset 1179648
+qemu-io> read 65536/65536 bytes at offset 1114112
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 1376256
+qemu-io> read 65536/65536 bytes at offset 1310720
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 42
+qemu-io> read 512/512 bytes at offset 4294967296
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294968320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294969344
@@ -940,9 +942,9 @@ qemu-io> read 512/512 bytes at offset 4295030784
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4295031808
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 4295032832
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 43
+qemu-io> read 512/512 bytes at offset 4294967808
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294968832
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294969856
@@ -1069,16 +1071,14 @@ qemu-io> read 512/512 bytes at offset 4295031296
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4295032320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 4295033344
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 42
-qemu-io> read 65536/65536 bytes at offset 4296081408
+qemu-io> read 65536/65536 bytes at offset 4296015872
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 43
-qemu-io> read 65536/65536 bytes at offset 4296146944
+qemu-io> read 65536/65536 bytes at offset 4296081408
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 4296343552
+qemu-io> read 65536/65536 bytes at offset 4296278016
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> No errors were found on the image.
 
@@ -1091,6 +1091,8 @@ qemu-io> qemu-io> 0/128 sectors allocated at offset 4.001 GiB
 qemu-io> Reading
 
 === IO: pattern 42
+qemu-io> read 512/512 bytes at offset 0
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 1024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 2048
@@ -1217,9 +1219,9 @@ qemu-io> read 512/512 bytes at offset 63488
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 64512
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 65536
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 43
+qemu-io> read 512/512 bytes at offset 512
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 1536
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 2560
@@ -1346,18 +1348,18 @@ qemu-io> read 512/512 bytes at offset 64000
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 65024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 66048
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 42
-qemu-io> read 65536/65536 bytes at offset 1114112
+qemu-io> read 65536/65536 bytes at offset 1048576
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 43
-qemu-io> read 65536/65536 bytes at offset 1179648
+qemu-io> read 65536/65536 bytes at offset 1114112
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 1376256
+qemu-io> read 65536/65536 bytes at offset 1310720
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 42
+qemu-io> read 512/512 bytes at offset 4294967296
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294968320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294969344
@@ -1484,9 +1486,9 @@ qemu-io> read 512/512 bytes at offset 4295030784
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4295031808
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 4295032832
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 43
+qemu-io> read 512/512 bytes at offset 4294967808
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294968832
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294969856
@@ -1613,16 +1615,14 @@ qemu-io> read 512/512 bytes at offset 4295031296
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4295032320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 4295033344
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 42
-qemu-io> read 65536/65536 bytes at offset 4296081408
+qemu-io> read 65536/65536 bytes at offset 4296015872
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 43
-qemu-io> read 65536/65536 bytes at offset 4296146944
+qemu-io> read 65536/65536 bytes at offset 4296081408
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 4296343552
+qemu-io> read 65536/65536 bytes at offset 4296278016
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> No errors were found on the image.
 *** done

tests/qemu-iotests/020.out

@@ -3,6 +3,8 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=6442450944
 Filling base image
 
 === IO: pattern 0
+qemu-io> wrote 512/512 bytes at offset 0
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 1024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 2048
@@ -129,12 +131,12 @@ qemu-io> wrote 512/512 bytes at offset 63488
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 64512
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 65536
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 128
-qemu-io> wrote 65536/65536 bytes at offset 131072
+qemu-io> wrote 65536/65536 bytes at offset 65536
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
+qemu-io> wrote 512/512 bytes at offset 4294967296
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294968320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294969344
@@ -261,10 +263,8 @@ qemu-io> wrote 512/512 bytes at offset 4295030784
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4295031808
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 4295032832
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 128
-qemu-io> wrote 65536/65536 bytes at offset 4295098368
+qemu-io> wrote 65536/65536 bytes at offset 4295032832
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> No errors were found on the image.
 Creating test image with backing file
@@ -273,6 +273,8 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=6442450944 backing_file='TEST_DI
 Filling test image
 
 === IO: pattern 1
+qemu-io> wrote 512/512 bytes at offset 512
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 1536
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 2560
@@ -399,12 +401,12 @@ qemu-io> wrote 512/512 bytes at offset 64000
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 65024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 66048
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> wrote 65536/65536 bytes at offset 196608
+qemu-io> wrote 65536/65536 bytes at offset 131072
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 1
+qemu-io> wrote 512/512 bytes at offset 4294967808
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294968832
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4294969856
@@ -531,16 +533,16 @@ qemu-io> wrote 512/512 bytes at offset 4295031296
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 4295032320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 512/512 bytes at offset 4295033344
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> wrote 65536/65536 bytes at offset 4295163904
+qemu-io> wrote 65536/65536 bytes at offset 4295098368
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> No errors were found on the image.
 Image committed.
 Reading from the backing file
 
 === IO: pattern 0
+qemu-io> read 512/512 bytes at offset 0
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 1024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 2048
@@ -667,9 +669,9 @@ qemu-io> read 512/512 bytes at offset 63488
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 64512
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 65536
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 1
+qemu-io> read 512/512 bytes at offset 512
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 1536
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 2560
@@ -796,18 +798,18 @@ qemu-io> read 512/512 bytes at offset 64000
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 65024
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 66048
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 128
+qemu-io> read 65536/65536 bytes at offset 65536
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+qemu-io> === IO: pattern 0
 qemu-io> read 65536/65536 bytes at offset 131072
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 196608
+qemu-io> read 65536/65536 bytes at offset 327680
-64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 393216
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
+qemu-io> read 512/512 bytes at offset 4294967296
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294968320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294969344
@@ -934,9 +936,9 @@ qemu-io> read 512/512 bytes at offset 4295030784
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4295031808
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 4295032832
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 1
+qemu-io> read 512/512 bytes at offset 4294967808
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294968832
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4294969856
@@ -1063,16 +1065,14 @@ qemu-io> read 512/512 bytes at offset 4295031296
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 4295032320
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 512/512 bytes at offset 4295033344
-512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 128
+qemu-io> read 65536/65536 bytes at offset 4295032832
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+qemu-io> === IO: pattern 0
 qemu-io> read 65536/65536 bytes at offset 4295098368
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 4295163904
+qemu-io> read 65536/65536 bytes at offset 4295294976
-64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> === IO: pattern 0
-qemu-io> read 65536/65536 bytes at offset 4295360512
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> No errors were found on the image.
 *** done

tests/qemu-iotests/022.out

@@ -4,6 +4,8 @@ Testing empty image
 
 At offset 10485760:
 === IO: pattern 0
+qemu-io> wrote 4096/4096 bytes at offset 10485760
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 4096/4096 bytes at offset 10489856
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 4096/4096 bytes at offset 10493952
@@ -514,9 +516,9 @@ qemu-io> wrote 4096/4096 bytes at offset 11526144
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 4096/4096 bytes at offset 11530240
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 4096/4096 bytes at offset 11534336
-4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 4
+qemu-io> wrote 2048/2048 bytes at offset 11536384
+2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 11540480
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 11544576
@@ -1027,9 +1029,9 @@ qemu-io> wrote 2048/2048 bytes at offset 12576768
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 12580864
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 2048/2048 bytes at offset 12584960
-2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
+qemu-io> wrote 2048/2048 bytes at offset 12582912
+2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 12587008
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 12591104
@@ -1540,9 +1542,9 @@ qemu-io> wrote 2048/2048 bytes at offset 13623296
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 13627392
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 2048/2048 bytes at offset 13631488
-2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 2
+qemu-io> wrote 2048/2048 bytes at offset 13632512
+2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 13636608
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 13640704
@@ -2053,9 +2055,9 @@ qemu-io> wrote 2048/2048 bytes at offset 14672896
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 14676992
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 2048/2048 bytes at offset 14681088
-2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 4
+qemu-io> wrote 8192/8192 bytes at offset 14682112
+8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 8192/8192 bytes at offset 14694400
 8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 8192/8192 bytes at offset 14706688
@@ -2182,9 +2184,9 @@ qemu-io> wrote 8192/8192 bytes at offset 15443968
 8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 8192/8192 bytes at offset 15456256
 8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 8192/8192 bytes at offset 15468544
-8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 244
+qemu-io> wrote 12288/12288 bytes at offset 16771072
+12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 12288/12288 bytes at offset 18870272
 12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 12288/12288 bytes at offset 20969472
@@ -2199,9 +2201,9 @@ qemu-io> wrote 12288/12288 bytes at offset 29366272
 12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 12288/12288 bytes at offset 31465472
 12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 12288/12288 bytes at offset 33564672
-12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
+qemu-io> read 4096/4096 bytes at offset 10485760
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 4096/4096 bytes at offset 10489856
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 4096/4096 bytes at offset 10493952
@@ -2712,9 +2714,9 @@ qemu-io> read 4096/4096 bytes at offset 11526144
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 4096/4096 bytes at offset 11530240
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 4096/4096 bytes at offset 11534336
-4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 4
+qemu-io> read 2048/2048 bytes at offset 11536384
+2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 11540480
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 11544576
@@ -3225,9 +3227,9 @@ qemu-io> read 2048/2048 bytes at offset 12576768
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 12580864
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 2048/2048 bytes at offset 12584960
-2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
+qemu-io> read 2048/2048 bytes at offset 12582912
+2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 12587008
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 12591104
@@ -3738,9 +3740,9 @@ qemu-io> read 2048/2048 bytes at offset 13623296
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 13627392
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 2048/2048 bytes at offset 13631488
-2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 2
+qemu-io> read 2048/2048 bytes at offset 13632512
+2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 13636608
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 13640704
@@ -4251,9 +4253,9 @@ qemu-io> read 2048/2048 bytes at offset 14672896
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 14676992
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 2048/2048 bytes at offset 14681088
-2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 4
+qemu-io> read 8192/8192 bytes at offset 14682112
+8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 8192/8192 bytes at offset 14694400
 8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 8192/8192 bytes at offset 14706688
@@ -4380,9 +4382,9 @@ qemu-io> read 8192/8192 bytes at offset 15443968
 8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 8192/8192 bytes at offset 15456256
 8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 8192/8192 bytes at offset 15468544
-8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 244
+qemu-io> read 12288/12288 bytes at offset 16771072
+12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 12288/12288 bytes at offset 18870272
 12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 12288/12288 bytes at offset 20969472
@@ -4397,11 +4399,11 @@ qemu-io> read 12288/12288 bytes at offset 29366272
 12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 12288/12288 bytes at offset 31465472
 12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 12288/12288 bytes at offset 33564672
-12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> No errors were found on the image.
 At offset 4294967296:
 === IO: pattern 0
+qemu-io> wrote 4096/4096 bytes at offset 4294967296
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 4096/4096 bytes at offset 4294971392
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 4096/4096 bytes at offset 4294975488
@@ -4912,9 +4914,9 @@ qemu-io> wrote 4096/4096 bytes at offset 4296007680
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 4096/4096 bytes at offset 4296011776
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 4096/4096 bytes at offset 4296015872
-4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 4
+qemu-io> wrote 2048/2048 bytes at offset 4296017920
+2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 4296022016
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 4296026112
@@ -5425,9 +5427,9 @@ qemu-io> wrote 2048/2048 bytes at offset 4297058304
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 4297062400
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 2048/2048 bytes at offset 4297066496
-2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
+qemu-io> wrote 2048/2048 bytes at offset 4297064448
+2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 4297068544
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 4297072640
@@ -5938,9 +5940,9 @@ qemu-io> wrote 2048/2048 bytes at offset 4298104832
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 4298108928
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 2048/2048 bytes at offset 4298113024
-2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 2
+qemu-io> wrote 2048/2048 bytes at offset 4298114048
+2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 4298118144
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 4298122240
@@ -6451,9 +6453,9 @@ qemu-io> wrote 2048/2048 bytes at offset 4299154432
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 2048/2048 bytes at offset 4299158528
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 2048/2048 bytes at offset 4299162624
-2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 4
+qemu-io> wrote 8192/8192 bytes at offset 4299163648
+8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 8192/8192 bytes at offset 4299175936
 8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 8192/8192 bytes at offset 4299188224
@@ -6580,9 +6582,9 @@ qemu-io> wrote 8192/8192 bytes at offset 4299925504
 8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 8192/8192 bytes at offset 4299937792
 8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 8192/8192 bytes at offset 4299950080
-8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 244
+qemu-io> wrote 12288/12288 bytes at offset 4301252608
+12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 12288/12288 bytes at offset 4303351808
 12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 12288/12288 bytes at offset 4305451008
@@ -6597,9 +6599,9 @@ qemu-io> wrote 12288/12288 bytes at offset 4313847808
 12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 12288/12288 bytes at offset 4315947008
 12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> wrote 12288/12288 bytes at offset 4318046208
-12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
+qemu-io> read 4096/4096 bytes at offset 4294967296
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 4096/4096 bytes at offset 4294971392
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 4096/4096 bytes at offset 4294975488
@@ -7110,9 +7112,9 @@ qemu-io> read 4096/4096 bytes at offset 4296007680
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 4096/4096 bytes at offset 4296011776
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 4096/4096 bytes at offset 4296015872
-4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 4
+qemu-io> read 2048/2048 bytes at offset 4296017920
+2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 4296022016
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 4296026112
@@ -7623,9 +7625,9 @@ qemu-io> read 2048/2048 bytes at offset 4297058304
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 4297062400
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 2048/2048 bytes at offset 4297066496
-2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
+qemu-io> read 2048/2048 bytes at offset 4297064448
+2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 4297068544
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 4297072640
@@ -8136,9 +8138,9 @@ qemu-io> read 2048/2048 bytes at offset 4298104832
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 4298108928
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 2048/2048 bytes at offset 4298113024
-2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 2
+qemu-io> read 2048/2048 bytes at offset 4298114048
+2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 4298118144
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 4298122240
@@ -8649,9 +8651,9 @@ qemu-io> read 2048/2048 bytes at offset 4299154432
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 2048/2048 bytes at offset 4299158528
 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 2048/2048 bytes at offset 4299162624
-2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 4
+qemu-io> read 8192/8192 bytes at offset 4299163648
+8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 8192/8192 bytes at offset 4299175936
 8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 8192/8192 bytes at offset 4299188224
@@ -8778,9 +8780,9 @@ qemu-io> read 8192/8192 bytes at offset 4299925504
 8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 8192/8192 bytes at offset 4299937792
 8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 8192/8192 bytes at offset 4299950080
-8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 244
+qemu-io> read 12288/12288 bytes at offset 4301252608
+12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 12288/12288 bytes at offset 4303351808
 12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 12288/12288 bytes at offset 4305451008
@@ -8795,7 +8797,5 @@ qemu-io> read 12288/12288 bytes at offset 4313847808
 12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 12288/12288 bytes at offset 4315947008
 12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-io> read 12288/12288 bytes at offset 4318046208
-12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> No errors were found on the image.
 *** done

tests/qemu-iotests/024

@@ -61,14 +61,14 @@ echo "Creating backing file"
 echo
 
 _make_test_img 1G
-io_pattern writev $((-2 * CLUSTER_SIZE)) $CLUSTER_SIZE $((2 * CLUSTER_SIZE)) 8 0x11
+io_pattern writev 0 $CLUSTER_SIZE $((2 * CLUSTER_SIZE)) 8 0x11
 mv $TEST_IMG $TEST_IMG.base_old
 
 echo "Creating new backing file"
 echo
 
 _make_test_img 1G
-io_pattern writev $((-4 * CLUSTER_SIZE)) $((2 * CLUSTER_SIZE)) $((4 * CLUSTER_SIZE)) 4 0x22
+io_pattern writev 0 $((2 * CLUSTER_SIZE)) $((4 * CLUSTER_SIZE)) 4 0x22
 mv $TEST_IMG $TEST_IMG.base_new
 
 echo "Creating COW image"

tests/qemu-iotests/028

@@ -64,7 +64,7 @@ echo "Filling base image"
 echo
 
 # Fill end of base image with a pattern, skipping every other sector
-io writev $offset 512 1024 31
+io writev $offset 512 1024 32
 
 _check_test_img
 
@@ -78,7 +78,7 @@ echo "Filling test image"
 echo
 
 # Write every other sector around where the base image ends
-io writev $(( offset + 512 )) 512 1024 63
+io writev $(( offset + 512 )) 512 1024 64
 
 _check_test_img
 
@@ -86,13 +86,13 @@ echo "Reading"
 echo
 
 # Base image sectors
-io readv $(( offset )) 512 1024 31
+io readv $(( offset )) 512 1024 32
 
 # Image sectors
-io readv $(( offset + 512 )) 512 1024 63
+io readv $(( offset + 512 )) 512 1024 64
 
 # Zero sectors beyond end of base image
-io_zero readv $(( offset + 32 * 1024 )) 512 1024 31
+io_zero readv $(( offset + 32 * 1024 )) 512 1024 32
 
 _check_test_img
 

tests/qemu-iotests/028.out

@@ -3,6 +3,8 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=3221227008
 Filling base image
 
 === IO: pattern 195
+qemu-io> wrote 512/512 bytes at offset 3221194240
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 3221195264
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 3221196288
@@ -72,6 +74,8 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=4294968832 backing_file='TEST_DI
 Filling test image
 
 === IO: pattern 196
+qemu-io> wrote 512/512 bytes at offset 3221194752
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 3221195776
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> wrote 512/512 bytes at offset 3221196800
@@ -202,6 +206,8 @@ qemu-io> No errors were found on the image.
 Reading
 
 === IO: pattern 195
+qemu-io> read 512/512 bytes at offset 3221194240
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 3221195264
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 3221196288
@@ -265,6 +271,8 @@ qemu-io> read 512/512 bytes at offset 3221224960
 qemu-io> read 512/512 bytes at offset 3221225984
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 196
+qemu-io> read 512/512 bytes at offset 3221194752
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 3221195776
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 3221196800
@@ -392,6 +400,8 @@ qemu-io> read 512/512 bytes at offset 3221258240
 qemu-io> read 512/512 bytes at offset 3221259264
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> === IO: pattern 0
+qemu-io> read 512/512 bytes at offset 3221227008
+512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 3221228032
 512.000000 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 qemu-io> read 512/512 bytes at offset 3221229056

tests/qemu-iotests/common.pattern

@@ -23,7 +23,7 @@ function do_is_allocated() {
     local count=$4
 
     for i in `seq 1 $count`; do
-        echo alloc $(( start + i * step )) $size
+        echo alloc $(( start + (i - 1) * step )) $size
     done
 }
 
@@ -41,7 +41,7 @@ function do_io() {
 
     echo === IO: pattern $pattern >&2
     for i in `seq 1 $count`; do
-        echo $op -P $pattern $(( start + i * step )) $size
+        echo $op -P $pattern $(( start + (i - 1) * step )) $size
     done
 }