Block layer patches:

- Make truncate operations asynchronous (so that preallocation in
   blockdev-create doesn't block the main loop any more)
 - usb-storage: Add rerror/werror properties
 - nvme: Add num_queues property
 - qemu-img convert: Copy offloading fixes (including data corruption fix)
 - qcow2: Fix cluster leak on temporary write error
 - Use byte-based functions instead of bdrv_co_readv/writev()
 - Various small fixes and cleanups
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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches:

- Make truncate operations asynchronous (so that preallocation in
  blockdev-create doesn't block the main loop any more)
- usb-storage: Add rerror/werror properties
- nvme: Add num_queues property
- qemu-img convert: Copy offloading fixes (including data corruption fix)
- qcow2: Fix cluster leak on temporary write error
- Use byte-based functions instead of bdrv_co_readv/writev()
- Various small fixes and cleanups

# gpg: Signature made Fri 29 Jun 2018 15:08:34 BST
# gpg:                using RSA key 7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (29 commits)
  block: Remove unused sector-based vectored I/O
  vhdx: Switch to byte-based calls
  replication: Switch to byte-based calls
  qcow: Switch to a byte-based driver
  qcow: Switch qcow_co_writev to byte-based calls
  qcow: Switch qcow_co_readv to byte-based calls
  qcow: Switch get_cluster_offset to be byte-based
  parallels: Switch to byte-based calls
  file-posix: Fix EINTR handling
  iscsi: Don't blindly use designator length in response for memcpy
  qcow2: Fix src_offset in copy offloading
  file-posix: Implement co versions of discard/flush
  qemu-iotests: Test qcow2 not leaking clusters on write error
  qcow2: Free allocated clusters on write error
  qemu-iotests: Update 026.out.nocache reference output
  block/crypto: Simplify block_crypto_{open,create}_opts_init()
  block: Move request tracking to children in copy offloading
  qcow2: Remove dead check on !ret
  file-posix: Make .bdrv_co_truncate asynchronous
  block: Use tracked request for truncate
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

tests/qemu-iotests/026

@@ -200,6 +200,23 @@ done
 done
 done
 
+echo
+echo === Avoid cluster leaks after temporary failure ===
+echo
+
+cat > "$TEST_DIR/blkdebug.conf" <<EOF
+[inject-error]
+event = "write_aio"
+errno = "5"
+once = "on"
+EOF
+
+# After the failed first write, do a second write so that the updated refcount
+# block is actually written back
+_make_test_img 64M
+$QEMU_IO -c "write 0 1M" -c "write 0 1M" "$BLKDBG_TEST_IMG" | _filter_qemu_io
+_check_test_img
+
 # success, all done
 echo "*** done"
 rm -f $seq.full

tests/qemu-iotests/026.out

@@ -675,4 +675,12 @@ write failed: No space left on device
 
 96 leaked clusters were found on the image.
 This means waste of disk space, but no harm to data.
+
+=== Avoid cluster leaks after temporary failure ===
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
+write failed: Input/output error
+wrote 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+No errors were found on the image.
 *** done

tests/qemu-iotests/026.out.nocache

@@ -541,7 +541,7 @@ Failed to flush the L2 table cache: No space left on device
 Failed to flush the refcount block cache: No space left on device
 write failed: No space left on device
 
-11 leaked clusters were found on the image.
+10 leaked clusters were found on the image.
 This means waste of disk space, but no harm to data.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
@@ -569,7 +569,7 @@ Failed to flush the L2 table cache: No space left on device
 Failed to flush the refcount block cache: No space left on device
 write failed: No space left on device
 
-11 leaked clusters were found on the image.
+10 leaked clusters were found on the image.
 This means waste of disk space, but no harm to data.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
@@ -597,7 +597,7 @@ Failed to flush the L2 table cache: No space left on device
 Failed to flush the refcount block cache: No space left on device
 write failed: No space left on device
 
-11 leaked clusters were found on the image.
+10 leaked clusters were found on the image.
 This means waste of disk space, but no harm to data.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
@@ -683,4 +683,12 @@ write failed: No space left on device
 
 96 leaked clusters were found on the image.
 This means waste of disk space, but no harm to data.
+
+=== Avoid cluster leaks after temporary failure ===
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
+write failed: Input/output error
+wrote 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+No errors were found on the image.
 *** done

tests/qemu-iotests/063

@@ -91,6 +91,15 @@ if $QEMU_IMG convert -f $IMGFMT -O $IMGFMT -n "$TEST_IMG.orig" "$TEST_IMG" >/dev
     exit 1
 fi
 
+echo "== Regression testing for copy offloading bug =="
+
+_make_test_img 1M
+TEST_IMG="$TEST_IMG.target" _make_test_img 1M
+$QEMU_IO -c 'write -P 1 0 512k' -c 'write -P 2 512k 512k' "$TEST_IMG" | _filter_qemu_io
+$QEMU_IO -c 'write -P 4 512k 512k' -c 'write -P 3 0 512k' "$TEST_IMG.target" | _filter_qemu_io
+$QEMU_IMG convert -n -O $IMGFMT "$TEST_IMG" "$TEST_IMG.target"
+$QEMU_IMG compare "$TEST_IMG" "$TEST_IMG.target"
+
 echo "*** done"
 rm -f $seq.full
 status=0

tests/qemu-iotests/063.out

@@ -7,4 +7,16 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=4194304
 No errors were found on the image.
 == Testing conversion to a smaller file fails ==
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=2097152
+== Regression testing for copy offloading bug ==
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576
+Formatting 'TEST_DIR/t.IMGFMT.target', fmt=IMGFMT size=1048576
+wrote 524288/524288 bytes at offset 0
+512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 524288/524288 bytes at offset 524288
+512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 524288/524288 bytes at offset 524288
+512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 524288/524288 bytes at offset 0
+512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+Images are identical.
 *** done