Re: [Qemu-devel] [PATCH RFC v7 6/7] qemu-iotests: s390x: fix test 051

Sun, 26 Apr 2015 21:00:07 -0700 

Hi Max:

On 04/24/2015 01:00 AM, Max Reitz wrote:

On 23.04.2015 04:42, Xiao Guang Chen wrote:
The tests for device type "ide_cd" should only be tested for the pc platform. 
The default device id of hard disk on the s390 platform differs to that
of the x86 platform. A new variable device_id is defined and "virtio0"
set for the s390 platform. A x86 platform specific output file is also
needed.
A new filter was added to filter orphan warnings.

Reviewed-by: Max Reitz <mre...@redhat.com>
Reviewed-by: Michael Mueller <m...@linux.vnet.ibm.com>
Signed-off-by: Xiao Guang Chen <che...@linux.vnet.ibm.com>
---
  tests/qemu-iotests/051           |  79 ++++---
  tests/qemu-iotests/051.out       | 156 +++++---------
tests/qemu-iotests/051.pc.out | 433 +++++++++++++++++++++++++++++++++++++++ 
  tests/qemu-iotests/common.filter |   7 +
  4 files changed, 545 insertions(+), 130 deletions(-)
  create mode 100644 tests/qemu-iotests/051.pc.out

diff --git a/tests/qemu-iotests/051 b/tests/qemu-iotests/051
index 0360f37..8de16a5 100755
--- a/tests/qemu-iotests/051
+++ b/tests/qemu-iotests/051
@@ -147,13 +147,19 @@ run_qemu -drive if=ide
  run_qemu -drive if=virtio
  run_qemu -drive if=scsi
  -run_qemu -drive if=none,id=disk -device ide-cd,drive=disk
-run_qemu -drive if=none,id=disk -device lsi53c895a -device scsi-cd,drive=disk 
-
-run_qemu -drive if=none,id=disk -device ide-drive,drive=disk
-run_qemu -drive if=none,id=disk -device ide-hd,drive=disk
-run_qemu -drive if=none,id=disk -device lsi53c895a -device scsi-disk,drive=disk -run_qemu -drive if=none,id=disk -device lsi53c895a -device scsi-hd,drive=disk 
+case "$QEMU_DEFAULT_MACHINE" in
+    pc)
+        run_qemu -drive if=none,id=disk -device ide-cd,drive=disk
+ run_qemu -drive if=none,id=disk -device lsi53c895a -device scsi-cd,drive=disk 
+
+        run_qemu -drive if=none,id=disk -device ide-drive,drive=disk
+        run_qemu -drive if=none,id=disk -device ide-hd,drive=disk
+ run_qemu -drive if=none,id=disk -device lsi53c895a -device scsi-disk,drive=disk + run_qemu -drive if=none,id=disk -device lsi53c895a -device scsi-hd,drive=disk 
+        ;;
+    *)
+        ;;
+esac
    echo
  echo === Read-only ===
@@ -167,13 +173,19 @@ run_qemu -drive file="$TEST_IMG",if=ide,readonly=on 
  run_qemu -drive file="$TEST_IMG",if=virtio,readonly=on
  run_qemu -drive file="$TEST_IMG",if=scsi,readonly=on
-run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device ide-cd,drive=disk -run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device lsi53c895a -device scsi-cd,drive=disk 
+case "$QEMU_DEFAULT_MACHINE" in
+    pc)
+ run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device ide-cd,drive=disk + run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device lsi53c895a -device scsi-cd,drive=disk -run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device ide-drive,drive=disk -run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device ide-hd,drive=disk -run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device lsi53c895a -device scsi-disk,drive=disk -run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device lsi53c895a -device scsi-hd,drive=disk + run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device ide-drive,drive=disk + run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device ide-hd,drive=disk + run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device lsi53c895a -device scsi-disk,drive=disk + run_qemu -drive file="$TEST_IMG",if=none,id=disk,readonly=on -device lsi53c895a -device scsi-hd,drive=disk 
+        ;;
+    *)
+        ;;
+esac
    echo
  echo === Cache modes ===
@@ -182,12 +194,12 @@ echo
# Cannot use the test image because cache=none might not work on the host FS 
  # Use cdrom so that we won't get errors about missing media
  -run_qemu -drive media=cdrom,cache=none
-run_qemu -drive media=cdrom,cache=directsync
-run_qemu -drive media=cdrom,cache=writeback
-run_qemu -drive media=cdrom,cache=writethrough
-run_qemu -drive media=cdrom,cache=unsafe
-run_qemu -drive media=cdrom,cache=invalid_value
+run_qemu -drive if=scsi,media=cdrom,cache=none
+run_qemu -drive if=scsi,media=cdrom,cache=directsync
+run_qemu -drive if=scsi,media=cdrom,cache=writeback
+run_qemu -drive if=scsi,media=cdrom,cache=writethrough
+run_qemu -drive if=scsi,media=cdrom,cache=unsafe
+run_qemu -drive if=scsi,media=cdrom,cache=invalid_value
    echo
  echo === Specifying the protocol layer ===
@@ -251,28 +263,37 @@ echo
  echo === Snapshot mode ===
  echo
  +case "$QEMU_DEFAULT_MACHINE" in
+    pc)
+        device_id="ide0-hd0"
+        ;;
+    s390)
+        device_id="virtio0"
+        ;;
+esac
+
  $QEMU_IO -c "write -P 0x11 0 4k" "$TEST_IMG" | _filter_qemu_io
-echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file="$TEST_IMG" -snapshot | _filter_qemu_io -echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file="$TEST_IMG",snapshot=on | _filter_qemu_io -echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file.filename="$TEST_IMG",driver=qcow2,snapshot=on | _filter_qemu_io -echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file.filename="$TEST_IMG",driver=qcow2 -snapshot | _filter_qemu_io -echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file="file:$TEST_IMG" -snapshot | _filter_qemu_io -echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file="file:$TEST_IMG",snapshot=on | _filter_qemu_io +echo "qemu-io $device_id \"write -P 0x22 0 4k\"" | run_qemu -drive file="$TEST_IMG" -snapshot | _filter_qemu_io +echo "qemu-io $device_id \"write -P 0x22 0 4k\"" | run_qemu -drive file="$TEST_IMG",snapshot=on | _filter_qemu_io +echo "qemu-io $device_id \"write -P 0x22 0 4k\"" | run_qemu -drive file.filename="$TEST_IMG",driver=qcow2,snapshot=on | _filter_qemu_io +echo "qemu-io $device_id \"write -P 0x22 0 4k\"" | run_qemu -drive file.filename="$TEST_IMG",driver=qcow2 -snapshot | _filter_qemu_io +echo "qemu-io $device_id \"write -P 0x22 0 4k\"" | run_qemu -drive file="file:$TEST_IMG" -snapshot | _filter_qemu_io +echo "qemu-io $device_id \"write -P 0x22 0 4k\"" | run_qemu -drive file="file:$TEST_IMG",snapshot=on | _filter_qemu_io 
    # Opening a read-only file r/w with snapshot=on
  chmod u-w "$TEST_IMG"
-echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file="$TEST_IMG" -snapshot | _filter_qemu_io -echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file="$TEST_IMG",snapshot=on | _filter_qemu_io +echo "qemu-io $device_id \"write -P 0x22 0 4k\"" | run_qemu -drive file="$TEST_IMG" -snapshot | _filter_qemu_io +echo "qemu-io $device_id \"write -P 0x22 0 4k\"" | run_qemu -drive file="$TEST_IMG",snapshot=on | _filter_qemu_io 
  chmod u+w "$TEST_IMG"
    $QEMU_IO -c "read -P 0x11 0 4k" "$TEST_IMG" | _filter_qemu_io
-echo 'qemu-io ide0-hd0 "write -P 0x22 0 4k"' | run_qemu -drive file="$TEST_IMG",snapshot=off | _filter_qemu_io +echo "qemu-io $device_id \"write -P 0x22 0 4k\"" | run_qemu -drive file="$TEST_IMG",snapshot=off | _filter_qemu_io 
    $QEMU_IO -c "read -P 0x22 0 4k" "$TEST_IMG" | _filter_qemu_io
-echo -e 'qemu-io ide0-hd0 "write -P 0x33 0 4k"\ncommit ide0-hd0' | run_qemu -drive file="$TEST_IMG",snapshot=on | _filter_qemu_io +echo -e "qemu-io $device_id \"write -P 0x33 0 4k\"\ncommit $device_id" | run_qemu -drive file="$TEST_IMG",snapshot=on | _filter_qemu_io 
    $QEMU_IO -c "read -P 0x33 0 4k" "$TEST_IMG" | _filter_qemu_io
  diff --git a/tests/qemu-iotests/051.out b/tests/qemu-iotests/051.out
index 2890eac..63e0e81 100644
--- a/tests/qemu-iotests/051.out
+++ b/tests/qemu-iotests/051.out
@@ -5,16 +5,16 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file='TEST_DIR 
  === Unknown option ===
    Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=
-QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=: Block format 'qcow2' used by device 'ide0-hd0' doesn't support the option 'unknown_opt' +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=: Block format 'qcow2' used by device 'virtio0' doesn't support the option 'unknown_opt' 
    Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=on
-QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=on: Block format 'qcow2' used by device 'ide0-hd0' doesn't support the option 'unknown_opt' +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=on: Block format 'qcow2' used by device 'virtio0' doesn't support the option 'unknown_opt' 
    Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=1234
-QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=1234: Block format 'qcow2' used by device 'ide0-hd0' doesn't support the option 'unknown_opt' +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=1234: Block format 'qcow2' used by device 'virtio0' doesn't support the option 'unknown_opt' 
    Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=foo
-QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=foo: Block format 'qcow2' used by device 'ide0-hd0' doesn't support the option 'unknown_opt' +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=foo: Block format 'qcow2' used by device 'virtio0' doesn't support the option 'unknown_opt' 
      === Unknown protocol option ===
@@ -51,8 +51,7 @@ QEMU_PROG: -drive file=TEST_DIR/t.qcow2,driver=qcow2,format=qcow2: Cannot specif 
    Testing: -device virtio-scsi-pci -device scsi-hd
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) QEMU_PROG: -device scsi-hd: drive property not set
-QEMU_PROG: -device scsi-hd: Device 'scsi-hd' could not be initialized
+(qemu) QEMU_PROG: -device virtio-scsi-pci: No 'PCI' bus found for device 'virtio-scsi-pci'
This change looks like you'd rather just disable this test for non-PCI systems. Also, it's a change from v6 which forces me to remind you to please remove Reviewed-by statements from the commit message if there are functional changes in a patch from the previously reviewed version.
(Because just like in this case, the reviewer (i.e., me) may find some of these changes questionable, or might even outright object them.) 

Max
1. Sure. will remove Reviewed-by statements if any functional changes in a new patch version. thanks for the reminder 2. Test 051 will be executed for PCI systems like x86, and test 051 will be executed for non-PCI systems like s390x as well. However, its golden test data is different(051.out is for s390x, 051.pc.out is for x86) Test steps are different between PCI systems and non-PCI systems. For instance, the tests for device type "ide_cd" should only be tested for the pc platform, and be disabled for non-PCI systems. 


  === Overriding backing file ===
@@ -60,7 +59,7 @@ QEMU_PROG: -device scsi-hd: Device 'scsi-hd' could not be initialized Testing: -drive file=TEST_DIR/t.qcow2,driver=qcow2,backing.file.filename=TEST_DIR/t.qcow2.orig -nodefaults 
  QEMU X.Y.Z monitor - type 'help' for more information
(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo block 
-ide0-hd0: TEST_DIR/t.qcow2 (qcow2)
+virtio0: TEST_DIR/t.qcow2 (qcow2)
      Cache mode:       writeback
      Backing file:     TEST_DIR/t.qcow2.orig (chain depth: 1)
  (qemu) qququiquit
@@ -110,79 +109,56 @@ QEMU X.Y.Z monitor - type 'help' for more information 
    Testing: -drive if=floppy
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu)
+qququiquit
    Testing: -drive if=ide,media=cdrom
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu)
+qququiquit
    Testing: -drive if=scsi,media=cdrom
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu)
+qququiquit
    Testing: -drive if=ide
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) QEMU_PROG: Device needs media, but drive is empty
-QEMU_PROG: Initialization of device ide-hd failed: Device initialization failed. 
+(qemu)
+qququiquit
    Testing: -drive if=virtio
  QEMU X.Y.Z monitor - type 'help' for more information
(qemu) QEMU_PROG: -drive if=virtio: Device needs media, but drive is empty -QEMU_PROG: -drive if=virtio: Device 'virtio-blk-pci' could not be initialized +QEMU_PROG: -drive if=virtio: Device 'virtio-blk-s390' could not be initialized 
    Testing: -drive if=scsi
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) QEMU_PROG: Initialization of device lsi53c895a failed: Device needs media, but drive is empty 
-
-Testing: -drive if=none,id=disk -device ide-cd,drive=disk
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
-
-Testing: -drive if=none,id=disk -device lsi53c895a -device scsi-cd,drive=disk 
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
-
-Testing: -drive if=none,id=disk -device ide-drive,drive=disk
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) QEMU_PROG: -device ide-drive,drive=disk: Device needs media, but drive is empty 
-QEMU_PROG: -device ide-drive,drive=disk: Device initialization failed.
-QEMU_PROG: -device ide-drive,drive=disk: Device 'ide-drive' could not be initialized 
-
-Testing: -drive if=none,id=disk -device ide-hd,drive=disk
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) QEMU_PROG: -device ide-hd,drive=disk: Device needs media, but drive is empty 
-QEMU_PROG: -device ide-hd,drive=disk: Device initialization failed.
-QEMU_PROG: -device ide-hd,drive=disk: Device 'ide-hd' could not be initialized 
-
-Testing: -drive if=none,id=disk -device lsi53c895a -device scsi-disk,drive=disk 
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) QEMU_PROG: -device scsi-disk,drive=disk: Device needs media, but drive is empty -QEMU_PROG: -device scsi-disk,drive=disk: Device 'scsi-disk' could not be initialized 
-
-Testing: -drive if=none,id=disk -device lsi53c895a -device scsi-hd,drive=disk 
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) QEMU_PROG: -device scsi-hd,drive=disk: Device needs media, but drive is empty -QEMU_PROG: -device scsi-hd,drive=disk: Device 'scsi-hd' could not be initialized 
+(qemu)
+qququiquit
      === Read-only ===
    Testing: -drive file=TEST_DIR/t.qcow2,if=floppy,readonly=on
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu)
+qququiquit
    Testing: -drive file=TEST_DIR/t.qcow2,if=ide,media=cdrom,readonly=on
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu)
+qququiquit
Testing: -drive file=TEST_DIR/t.qcow2,if=scsi,media=cdrom,readonly=on 
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu)
+qququiquit
    Testing: -drive file=TEST_DIR/t.qcow2,if=ide,readonly=on
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) QEMU_PROG: Can't use a read-only drive
-QEMU_PROG: Initialization of device ide-hd failed: Device initialization failed. 
+(qemu)
+qququiquit
    Testing: -drive file=TEST_DIR/t.qcow2,if=virtio,readonly=on
  QEMU X.Y.Z monitor - type 'help' for more information
@@ -190,61 +166,39 @@ QEMU X.Y.Z monitor - type 'help' for more information 
    Testing: -drive file=TEST_DIR/t.qcow2,if=scsi,readonly=on
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
-
-Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=disk,readonly=on -device ide-cd,drive=disk 
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
-
-Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=disk,readonly=on -device lsi53c895a -device scsi-cd,drive=disk 
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
-
-Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=disk,readonly=on -device ide-drive,drive=disk 
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) QEMU_PROG: -device ide-drive,drive=disk: Can't use a read-only drive 
-QEMU_PROG: -device ide-drive,drive=disk: Device initialization failed.
-QEMU_PROG: -device ide-drive,drive=disk: Device 'ide-drive' could not be initialized 
-
-Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=disk,readonly=on -device ide-hd,drive=disk 
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) QEMU_PROG: -device ide-hd,drive=disk: Can't use a read-only drive 
-QEMU_PROG: -device ide-hd,drive=disk: Device initialization failed.
-QEMU_PROG: -device ide-hd,drive=disk: Device 'ide-hd' could not be initialized 
-
-Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=disk,readonly=on -device lsi53c895a -device scsi-disk,drive=disk 
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
-
-Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=disk,readonly=on -device lsi53c895a -device scsi-hd,drive=disk 
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu)
+qququiquit
      === Cache modes ===
  -Testing: -drive media=cdrom,cache=none
+Testing: -drive if=scsi,media=cdrom,cache=none
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu)
+qququiquit
  -Testing: -drive media=cdrom,cache=directsync
+Testing: -drive if=scsi,media=cdrom,cache=directsync
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu)
+qququiquit
  -Testing: -drive media=cdrom,cache=writeback
+Testing: -drive if=scsi,media=cdrom,cache=writeback
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu)
+qququiquit
  -Testing: -drive media=cdrom,cache=writethrough
+Testing: -drive if=scsi,media=cdrom,cache=writethrough
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu)
+qququiquit
  -Testing: -drive media=cdrom,cache=unsafe
+Testing: -drive if=scsi,media=cdrom,cache=unsafe
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu)
+qququiquit
  -Testing: -drive media=cdrom,cache=invalid_value
-QEMU_PROG: -drive media=cdrom,cache=invalid_value: invalid cache option
+Testing: -drive if=scsi,media=cdrom,cache=invalid_value
+QEMU_PROG: -drive if=scsi,media=cdrom,cache=invalid_value: invalid cache option 
      === Specifying the protocol layer ===
@@ -355,56 +309,56 @@ wrote 4096/4096 bytes at offset 0
  4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
  Testing: -drive file=TEST_DIR/t.qcow2 -snapshot
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" +(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io vqemu-io viqemu-io virqemu-io virtqemu-io virtiqemu-io virtioqemu-io virtio0qemu-io virtio0 qemu-io virtio0 "qemu-io virtio0 "wqemu-io virtio0 "wrqemu-io virtio0 "wriqemu-io virtio0 "writ! qemu-io virtio0 "writeqemu-io virtio0 "write qemu-io virtio0 "write -qemu-io virtio0 "write -Pqemu-io virtio0 "write -P qemu-io virtio0 "write -P 0qemu-io virtio0 "write -P 0xqemu-io virtio0 "write -P 0x2qemu-io virtio0 "write -P 0x22qemu-io virtio0 "wr! ite -P 0x22 qemu-io virtio0 "write -P 0x22 0qemu-io virtio0 "write -P 0x22 0 qemu-io virtio0 "write -P 0x22 0 4qemu-io virtio0 "write -P 0x22 0 4kqemu-io virtio0 "write -P 0x22 0 4k" 
  wrote 4096/4096 bytes at offset 0
  4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
  (qemu) qququiquit
    Testing: -drive file=TEST_DIR/t.qcow2,snapshot=on
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" +(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io vqemu-io viqemu-io virqemu-io virtqemu-io virtiqemu-io virtioqemu-io virtio0qemu-io virtio0 qemu-io virtio0 "qemu-io virtio0 "wqemu-io virtio0 "wrqemu-io virtio0 "wriqemu-io virtio0 "writ! qemu-io virtio0 "writeqemu-io virtio0 "write qemu-io virtio0 "write -qemu-io virtio0 "write -Pqemu-io virtio0 "write -P qemu-io virtio0 "write -P 0qemu-io virtio0 "write -P 0xqemu-io virtio0 "write -P 0x2qemu-io virtio0 "write -P 0x22qemu-io virtio0 "wr! ite -P 0x22 qemu-io virtio0 "write -P 0x22 0qemu-io virtio0 "write -P 0x22 0 qemu-io virtio0 "write -P 0x22 0 4qemu-io virtio0 "write -P 0x22 0 4kqemu-io virtio0 "write -P 0x22 0 4k" 
  wrote 4096/4096 bytes at offset 0
  4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
  (qemu) qququiquit
Testing: -drive file.filename=TEST_DIR/t.qcow2,driver=qcow2,snapshot=on 
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" +(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io vqemu-io viqemu-io virqemu-io virtqemu-io virtiqemu-io virtioqemu-io virtio0qemu-io virtio0 qemu-io virtio0 "qemu-io virtio0 "wqemu-io virtio0 "wrqemu-io virtio0 "wriqemu-io virtio0 "writ! qemu-io virtio0 "writeqemu-io virtio0 "write qemu-io virtio0 "write -qemu-io virtio0 "write -Pqemu-io virtio0 "write -P qemu-io virtio0 "write -P 0qemu-io virtio0 "write -P 0xqemu-io virtio0 "write -P 0x2qemu-io virtio0 "write -P 0x22qemu-io virtio0 "wr! ite -P 0x22 qemu-io virtio0 "write -P 0x22 0qemu-io virtio0 "write -P 0x22 0 qemu-io virtio0 "write -P 0x22 0 4qemu-io virtio0 "write -P 0x22 0 4kqemu-io virtio0 "write -P 0x22 0 4k" 
  wrote 4096/4096 bytes at offset 0
  4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
  (qemu) qququiquit
Testing: -drive file.filename=TEST_DIR/t.qcow2,driver=qcow2 -snapshot 
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" +(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io vqemu-io viqemu-io virqemu-io virtqemu-io virtiqemu-io virtioqemu-io virtio0qemu-io virtio0 qemu-io virtio0 "qemu-io virtio0 "wqemu-io virtio0 "wrqemu-io virtio0 "wriqemu-io virtio0 "writ! qemu-io virtio0 "writeqemu-io virtio0 "write qemu-io virtio0 "write -qemu-io virtio0 "write -Pqemu-io virtio0 "write -P qemu-io virtio0 "write -P 0qemu-io virtio0 "write -P 0xqemu-io virtio0 "write -P 0x2qemu-io virtio0 "write -P 0x22qemu-io virtio0 "wr! ite -P 0x22 qemu-io virtio0 "write -P 0x22 0qemu-io virtio0 "write -P 0x22 0 qemu-io virtio0 "write -P 0x22 0 4qemu-io virtio0 "write -P 0x22 0 4kqemu-io virtio0 "write -P 0x22 0 4k" 
  wrote 4096/4096 bytes at offset 0
  4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
  (qemu) qququiquit
    Testing: -drive file=file:TEST_DIR/t.qcow2 -snapshot
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" +(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io vqemu-io viqemu-io virqemu-io virtqemu-io virtiqemu-io virtioqemu-io virtio0qemu-io virtio0 qemu-io virtio0 "qemu-io virtio0 "wqemu-io virtio0 "wrqemu-io virtio0 "wriqemu-io virtio0 "writ! qemu-io virtio0 "writeqemu-io virtio0 "write qemu-io virtio0 "write -qemu-io virtio0 "write -Pqemu-io virtio0 "write -P qemu-io virtio0 "write -P 0qemu-io virtio0 "write -P 0xqemu-io virtio0 "write -P 0x2qemu-io virtio0 "write -P 0x22qemu-io virtio0 "wr! ite -P 0x22 qemu-io virtio0 "write -P 0x22 0qemu-io virtio0 "write -P 0x22 0 qemu-io virtio0 "write -P 0x22 0 4qemu-io virtio0 "write -P 0x22 0 4kqemu-io virtio0 "write -P 0x22 0 4k" 
  wrote 4096/4096 bytes at offset 0
  4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
  (qemu) qququiquit
    Testing: -drive file=file:TEST_DIR/t.qcow2,snapshot=on
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" +(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io vqemu-io viqemu-io virqemu-io virtqemu-io virtiqemu-io virtioqemu-io virtio0qemu-io virtio0 qemu-io virtio0 "qemu-io virtio0 "wqemu-io virtio0 "wrqemu-io virtio0 "wriqemu-io virtio0 "writ! qemu-io virtio0 "writeqemu-io virtio0 "write qemu-io virtio0 "write -qemu-io virtio0 "write -Pqemu-io virtio0 "write -P qemu-io virtio0 "write -P 0qemu-io virtio0 "write -P 0xqemu-io virtio0 "write -P 0x2qemu-io virtio0 "write -P 0x22qemu-io virtio0 "wr! ite -P 0x22 qemu-io virtio0 "write -P 0x22 0qemu-io virtio0 "write -P 0x22 0 qemu-io virtio0 "write -P 0x22 0 4qemu-io virtio0 "write -P 0x22 0 4kqemu-io virtio0 "write -P 0x22 0 4k" 
  wrote 4096/4096 bytes at offset 0
  4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
  (qemu) qququiquit
    Testing: -drive file=TEST_DIR/t.qcow2 -snapshot
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" +(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io vqemu-io viqemu-io virqemu-io virtqemu-io virtiqemu-io virtioqemu-io virtio0qemu-io virtio0 qemu-io virtio0 "qemu-io virtio0 "wqemu-io virtio0 "wrqemu-io virtio0 "wriqemu-io virtio0 "writ! qemu-io virtio0 "writeqemu-io virtio0 "write qemu-io virtio0 "write -qemu-io virtio0 "write -Pqemu-io virtio0 "write -P qemu-io virtio0 "write -P 0qemu-io virtio0 "write -P 0xqemu-io virtio0 "write -P 0x2qemu-io virtio0 "write -P 0x22qemu-io virtio0 "wr! ite -P 0x22 qemu-io virtio0 "write -P 0x22 0qemu-io virtio0 "write -P 0x22 0 qemu-io virtio0 "write -P 0x22 0 4qemu-io virtio0 "write -P 0x22 0 4kqemu-io virtio0 "write -P 0x22 0 4k" 
  wrote 4096/4096 bytes at offset 0
  4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
  (qemu) qququiquit
    Testing: -drive file=TEST_DIR/t.qcow2,snapshot=on
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" +(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io vqemu-io viqemu-io virqemu-io virtqemu-io virtiqemu-io virtioqemu-io virtio0qemu-io virtio0 qemu-io virtio0 "qemu-io virtio0 "wqemu-io virtio0 "wrqemu-io virtio0 "wriqemu-io virtio0 "writ! qemu-io virtio0 "writeqemu-io virtio0 "write qemu-io virtio0 "write -qemu-io virtio0 "write -Pqemu-io virtio0 "write -P qemu-io virtio0 "write -P 0qemu-io virtio0 "write -P 0xqemu-io virtio0 "write -P 0x2qemu-io virtio0 "write -P 0x22qemu-io virtio0 "wr! ite -P 0x22 qemu-io virtio0 "write -P 0x22 0qemu-io virtio0 "write -P 0x22 0 qemu-io virtio0 "write -P 0x22 0 4qemu-io virtio0 "write -P 0x22 0 4kqemu-io virtio0 "write -P 0x22 0 4k" 
  wrote 4096/4096 bytes at offset 0
  4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
  (qemu) qququiquit
@@ -413,7 +367,7 @@ read 4096/4096 bytes at offset 0
  4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
  Testing: -drive file=TEST_DIR/t.qcow2,snapshot=off
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" +(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io vqemu-io viqemu-io virqemu-io virtqemu-io virtiqemu-io virtioqemu-io virtio0qemu-io virtio0 qemu-io virtio0 "qemu-io virtio0 "wqemu-io virtio0 "wrqemu-io virtio0 "wriqemu-io virtio0 "writ! qemu-io virtio0 "writeqemu-io virtio0 "write qemu-io virtio0 "write -qemu-io virtio0 "write -Pqemu-io virtio0 "write -P qemu-io virtio0 "write -P 0qemu-io virtio0 "write -P 0xqemu-io virtio0 "write -P 0x2qemu-io virtio0 "write -P 0x22qemu-io virtio0 "wr! ite -P 0x22 qemu-io virtio0 "write -P 0x22 0qemu-io virtio0 "write -P 0x22 0 qemu-io virtio0 "write -P 0x22 0 4qemu-io virtio0 "write -P 0x22 0 4kqemu-io virtio0 "write -P 0x22 0 4k" 
  wrote 4096/4096 bytes at offset 0
  4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
  (qemu) qququiquit
@@ -422,10 +376,10 @@ read 4096/4096 bytes at offset 0
  4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
  Testing: -drive file=TEST_DIR/t.qcow2,snapshot=on
  QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x3qemu-io ide0-hd0 "w! rite -P 0x33qemu-io ide0-hd0 "write -P 0x33 qemu-io ide0-hd0 "write -P 0x33 0qemu-io ide0-hd0 "write -P 0x33 0 qemu-io ide0-hd0 "write -P 0x33 0 4qemu-io ide0-hd0 "write -P 0x33 0 4kqemu-io ide0-hd0 "write -P 0x33 0 4k" +(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io vqemu-io viqemu-io virqemu-io virtqemu-io virtiqemu-io virtioqemu-io virtio0qemu-io virtio0 qemu-io virtio0 "qemu-io virtio0 "wqemu-io virtio0 "wrqemu-io virtio0 "wriqemu-io virtio0 "writ! qemu-io virtio0 "writeqemu-io virtio0 "write qemu-io virtio0 "write -qemu-io virtio0 "write -Pqemu-io virtio0 "write -P qemu-io virtio0 "write -P 0qemu-io virtio0 "write -P 0xqemu-io virtio0 "write -P 0x3qemu-io virtio0 "write -P 0x33qemu-io virtio0 "wr! ite -P 0x33 qemu-io virtio0 "write -P 0x33 0qemu-io virtio0 "write -P 0x33 0 qemu-io virtio0 "write -P 0x33 0 4qemu-io virtio0 "write -P 0x33 0 4kqemu-io virtio0 "write -P 0x33 0 4k" 
  wrote 4096/4096 bytes at offset 0
  4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-(qemu) ccocomcommcommicommitcommit commit icommit idcommit idecommit ide0commit ide0-commit ide0-hcommit ide0-hdcommit ide0-hd0 +(qemu) ccocomcommcommicommitcommit commit vcommit vicommit vircommit virtcommit virticommit virtiocommit virtio0 
  (qemu) qququiquit
    read 4096/4096 bytes at offset 0
diff --git a/tests/qemu-iotests/051.pc.out b/tests/qemu-iotests/051.pc.out 
new file mode 100644
index 0000000..4c9224d
--- /dev/null
+++ b/tests/qemu-iotests/051.pc.out
@@ -0,0 +1,433 @@
+QA output created by 051
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file='TEST_DIR/t.IMGFMT.base' 
+
+=== Unknown option ===
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=: Block format 'qcow2' used by device 'ide0-hd0' doesn't support the option 'unknown_opt' 
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=on
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=on: Block format 'qcow2' used by device 'ide0-hd0' doesn't support the option 'unknown_opt' 
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=1234
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=1234: Block format 'qcow2' used by device 'ide0-hd0' doesn't support the option 'unknown_opt' 
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=foo
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=foo: Block format 'qcow2' used by device 'ide0-hd0' doesn't support the option 'unknown_opt' 
+
+
+=== Unknown protocol option ===
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=: Block protocol 'file' doesn't support the option 'unknown_opt' 
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=on
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=on: Block protocol 'file' doesn't support the option 'unknown_opt' 
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=1234 +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=1234: Block protocol 'file' doesn't support the option 'unknown_opt' 
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=foo
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=foo: Block protocol 'file' doesn't support the option 'unknown_opt' 
+
+
+=== Invalid format ===
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=foo
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=foo: Unknown driver 'foo' 
+
+Testing: -drive file=TEST_DIR/t.qcow2,driver=foo
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,driver=foo: Unknown driver 'foo' 
+
+Testing: -drive file=TEST_DIR/t.qcow2,driver=raw,format=qcow2
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,driver=raw,format=qcow2: Cannot specify both 'driver' and 'format' 
+
+Testing: -drive file=TEST_DIR/t.qcow2,driver=qcow2,format=qcow2
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,driver=qcow2,format=qcow2: Cannot specify both 'driver' and 'format' 
+
+
+=== Device without drive ===
+
+Testing: -device virtio-scsi-pci -device scsi-hd
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) QEMU_PROG: -device scsi-hd: drive property not set
+QEMU_PROG: -device scsi-hd: Device 'scsi-hd' could not be initialized
+
+
+=== Overriding backing file ===
+
+Testing: -drive file=TEST_DIR/t.qcow2,driver=qcow2,backing.file.filename=TEST_DIR/t.qcow2.orig -nodefaults 
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo block 
+ide0-hd0: TEST_DIR/t.qcow2 (qcow2)
+    Cache mode:       writeback
+    Backing file:     TEST_DIR/t.qcow2.orig (chain depth: 1)
+(qemu) qququiquit
+
+Testing: -drive file=TEST_DIR/t.qcow2,driver=raw,backing.file.filename=TEST_DIR/t.qcow2.orig +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,driver=raw,backing.file.filename=TEST_DIR/t.qcow2.orig: Driver doesn't support backing files 
+
+Testing: -drive file=TEST_DIR/t.qcow2,file.backing.driver=file,file.backing.filename=TEST_DIR/t.qcow2.orig +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,file.backing.driver=file,file.backing.filename=TEST_DIR/t.qcow2.orig: Driver doesn't support backing files 
+
+Testing: -drive file=TEST_DIR/t.qcow2,file.backing.driver=qcow2,file.backing.file.filename=TEST_DIR/t.qcow2.orig +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,file.backing.driver=qcow2,file.backing.file.filename=TEST_DIR/t.qcow2.orig: Driver doesn't support backing files 
+
+
+=== Enable and disable lazy refcounting on the command line, plus some invalid values === 
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=on
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=off
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=: Parameter 'lazy-refcounts' expects 'on' or 'off' 
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=42
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=42: Parameter 'lazy-refcounts' expects 'on' or 'off' 
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=foo
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=foo: Parameter 'lazy-refcounts' expects 'on' or 'off' 
+
+
+=== With version 2 images enabling lazy refcounts must fail ===
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=on
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=on: Lazy refcounts require a qcow2 image with at least qemu 1.1 compatibility level 
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=off
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+
+=== No medium ===
+
+Testing: -drive if=floppy
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive if=ide,media=cdrom
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive if=scsi,media=cdrom
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive if=ide
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) QEMU_PROG: Device needs media, but drive is empty
+QEMU_PROG: Initialization of device ide-hd failed: Device initialization failed. 
+
+Testing: -drive if=virtio
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) QEMU_PROG: -drive if=virtio: Device needs media, but drive is empty +QEMU_PROG: -drive if=virtio: Device 'virtio-blk-pci' could not be initialized 
+
+Testing: -drive if=scsi
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) QEMU_PROG: Initialization of device lsi53c895a failed: Device needs media, but drive is empty 
+
+Testing: -drive if=none,id=disk -device ide-cd,drive=disk
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive if=none,id=disk -device lsi53c895a -device scsi-cd,drive=disk 
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive if=none,id=disk -device ide-drive,drive=disk
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) QEMU_PROG: -device ide-drive,drive=disk: Device needs media, but drive is empty 
+QEMU_PROG: -device ide-drive,drive=disk: Device initialization failed.
+QEMU_PROG: -device ide-drive,drive=disk: Device 'ide-drive' could not be initialized 
+
+Testing: -drive if=none,id=disk -device ide-hd,drive=disk
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) QEMU_PROG: -device ide-hd,drive=disk: Device needs media, but drive is empty 
+QEMU_PROG: -device ide-hd,drive=disk: Device initialization failed.
+QEMU_PROG: -device ide-hd,drive=disk: Device 'ide-hd' could not be initialized 
+
+Testing: -drive if=none,id=disk -device lsi53c895a -device scsi-disk,drive=disk 
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) QEMU_PROG: -device scsi-disk,drive=disk: Device needs media, but drive is empty +QEMU_PROG: -device scsi-disk,drive=disk: Device 'scsi-disk' could not be initialized 
+
+Testing: -drive if=none,id=disk -device lsi53c895a -device scsi-hd,drive=disk 
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) QEMU_PROG: -device scsi-hd,drive=disk: Device needs media, but drive is empty +QEMU_PROG: -device scsi-hd,drive=disk: Device 'scsi-hd' could not be initialized 
+
+
+=== Read-only ===
+
+Testing: -drive file=TEST_DIR/t.qcow2,if=floppy,readonly=on
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive file=TEST_DIR/t.qcow2,if=ide,media=cdrom,readonly=on
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive file=TEST_DIR/t.qcow2,if=scsi,media=cdrom,readonly=on
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive file=TEST_DIR/t.qcow2,if=ide,readonly=on
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) QEMU_PROG: Can't use a read-only drive
+QEMU_PROG: Initialization of device ide-hd failed: Device initialization failed. 
+
+Testing: -drive file=TEST_DIR/t.qcow2,if=virtio,readonly=on
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive file=TEST_DIR/t.qcow2,if=scsi,readonly=on
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=disk,readonly=on -device ide-cd,drive=disk 
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=disk,readonly=on -device lsi53c895a -device scsi-cd,drive=disk 
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=disk,readonly=on -device ide-drive,drive=disk 
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) QEMU_PROG: -device ide-drive,drive=disk: Can't use a read-only drive 
+QEMU_PROG: -device ide-drive,drive=disk: Device initialization failed.
+QEMU_PROG: -device ide-drive,drive=disk: Device 'ide-drive' could not be initialized 
+
+Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=disk,readonly=on -device ide-hd,drive=disk 
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) QEMU_PROG: -device ide-hd,drive=disk: Can't use a read-only drive 
+QEMU_PROG: -device ide-hd,drive=disk: Device initialization failed.
+QEMU_PROG: -device ide-hd,drive=disk: Device 'ide-hd' could not be initialized 
+
+Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=disk,readonly=on -device lsi53c895a -device scsi-disk,drive=disk 
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=disk,readonly=on -device lsi53c895a -device scsi-hd,drive=disk 
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+
+=== Cache modes ===
+
+Testing: -drive if=scsi,media=cdrom,cache=none
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive if=scsi,media=cdrom,cache=directsync
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive if=scsi,media=cdrom,cache=writeback
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive if=scsi,media=cdrom,cache=writethrough
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive if=scsi,media=cdrom,cache=unsafe
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive if=scsi,media=cdrom,cache=invalid_value
+QEMU_PROG: -drive if=scsi,media=cdrom,cache=invalid_value: invalid cache option 
+
+
+=== Specifying the protocol layer ===
+
+Testing: -drive file=TEST_DIR/t.qcow2,file.driver=file
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive file=TEST_DIR/t.qcow2,file.driver=qcow2
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,file.driver=qcow2: Block format 'qcow2' used by device '' doesn't support the option 'filename' 
+
+
+=== Leaving out required options ===
+
+Testing: -drive driver=file
+QEMU_PROG: -drive driver=file: The 'file' block driver requires a file name 
+
+Testing: -drive driver=nbd
+QEMU_PROG: -drive driver=nbd: one of path and host must be specified.
+
+Testing: -drive driver=raw
+QEMU_PROG: -drive driver=raw: Can't use 'raw' as a block driver for the protocol level 
+
+Testing: -drive file.driver=file
+QEMU_PROG: -drive file.driver=file: The 'file' block driver requires a file name 
+
+Testing: -drive file.driver=nbd
+QEMU_PROG: -drive file.driver=nbd: one of path and host must be specified. 
+
+Testing: -drive file.driver=raw
+QEMU_PROG: -drive file.driver=raw: Can't use 'raw' as a block driver for the protocol level 
+
+Testing: -drive foo=bar
+QEMU_PROG: -drive foo=bar: Must specify either driver or file
+
+
+=== Specifying both an option and its legacy alias ===
+
+Testing: -drive file=TEST_DIR/t.qcow2,iops=1234,throttling.iops-total=5678 +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,iops=1234,throttling.iops-total=5678: 'throttling.iops-total' and its alias 'iops' can't be used at the same time 
+
+Testing: -drive file=TEST_DIR/t.qcow2,iops_rd=1234,throttling.iops-read=5678 +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,iops_rd=1234,throttling.iops-read=5678: 'throttling.iops-read' and its alias 'iops_rd' can't be used at the same time 
+
+Testing: -drive file=TEST_DIR/t.qcow2,iops_wr=1234,throttling.iops-write=5678 +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,iops_wr=1234,throttling.iops-write=5678: 'throttling.iops-write' and its alias 'iops_wr' can't be used at the same time 
+
+Testing: -drive file=TEST_DIR/t.qcow2,bps=1234,throttling.bps-total=5678 +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps=1234,throttling.bps-total=5678: 'throttling.bps-total' and its alias 'bps' can't be used at the same time 
+
+Testing: -drive file=TEST_DIR/t.qcow2,bps_rd=1234,throttling.bps-read=5678 +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps_rd=1234,throttling.bps-read=5678: 'throttling.bps-read' and its alias 'bps_rd' can't be used at the same time 
+
+Testing: -drive file=TEST_DIR/t.qcow2,bps_wr=1234,throttling.bps-write=5678 +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps_wr=1234,throttling.bps-write=5678: 'throttling.bps-write' and its alias 'bps_wr' can't be used at the same time 
+
+Testing: -drive file=TEST_DIR/t.qcow2,iops_max=1234,throttling.iops-total-max=5678 +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,iops_max=1234,throttling.iops-total-max=5678: 'throttling.iops-total-max' and its alias 'iops_max' can't be used at the same time 
+
+Testing: -drive file=TEST_DIR/t.qcow2,iops_rd_max=1234,throttling.iops-read-max=5678 +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,iops_rd_max=1234,throttling.iops-read-max=5678: 'throttling.iops-read-max' and its alias 'iops_rd_max' can't be used at the same time 
+
+Testing: -drive file=TEST_DIR/t.qcow2,iops_wr_max=1234,throttling.iops-write-max=5678 +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,iops_wr_max=1234,throttling.iops-write-max=5678: 'throttling.iops-write-max' and its alias 'iops_wr_max' can't be used at the same time 
+
+Testing: -drive file=TEST_DIR/t.qcow2,bps_max=1234,throttling.bps-total-max=5678 +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps_max=1234,throttling.bps-total-max=5678: 'throttling.bps-total-max' and its alias 'bps_max' can't be used at the same time 
+
+Testing: -drive file=TEST_DIR/t.qcow2,bps_rd_max=1234,throttling.bps-read-max=5678 +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps_rd_max=1234,throttling.bps-read-max=5678: 'throttling.bps-read-max' and its alias 'bps_rd_max' can't be used at the same time 
+
+Testing: -drive file=TEST_DIR/t.qcow2,bps_wr_max=1234,throttling.bps-write-max=5678 +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps_wr_max=1234,throttling.bps-write-max=5678: 'throttling.bps-write-max' and its alias 'bps_wr_max' can't be used at the same time 
+
+Testing: -drive file=TEST_DIR/t.qcow2,iops_size=1234,throttling.iops-size=5678 +QEMU_PROG: -drive file=TEST_DIR/t.qcow2,iops_size=1234,throttling.iops-size=5678: 'throttling.iops-size' and its alias 'iops_size' can't be used at the same time 
+
+Testing: -drive file=TEST_DIR/t.qcow2,readonly=on,read-only=off
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,readonly=on,read-only=off: 'read-only' and its alias 'readonly' can't be used at the same time 
+
+
+=== Parsing protocol from file name ===
+
+Testing: -hda foo:bar
+QEMU_PROG: -hda foo:bar: Unknown protocol 'foo'
+
+Testing: -drive file=foo:bar
+QEMU_PROG: -drive file=foo:bar: Unknown protocol 'foo'
+
+Testing: -drive file.filename=foo:bar
+QEMU_PROG: -drive file.filename=foo:bar: Could not open 'foo:bar': No such file or directory 
+
+Testing: -hda file:TEST_DIR/t.qcow2
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive file=file:TEST_DIR/t.qcow2
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qququiquit
+
+Testing: -drive file.filename=file:TEST_DIR/t.qcow2
+QEMU_PROG: -drive file.filename=file:TEST_DIR/t.qcow2: Could not open 'file:TEST_DIR/t.qcow2': No such file or directory 
+
+
+=== Snapshot mode ===
+
+wrote 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+Testing: -drive file=TEST_DIR/t.qcow2 -snapshot
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" 
+wrote 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) qququiquit
+
+Testing: -drive file=TEST_DIR/t.qcow2,snapshot=on
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" 
+wrote 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) qququiquit
+
+Testing: -drive file.filename=TEST_DIR/t.qcow2,driver=qcow2,snapshot=on
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" 
+wrote 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) qququiquit
+
+Testing: -drive file.filename=TEST_DIR/t.qcow2,driver=qcow2 -snapshot
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" 
+wrote 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) qququiquit
+
+Testing: -drive file=file:TEST_DIR/t.qcow2 -snapshot
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" 
+wrote 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) qququiquit
+
+Testing: -drive file=file:TEST_DIR/t.qcow2,snapshot=on
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" 
+wrote 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) qququiquit
+
+Testing: -drive file=TEST_DIR/t.qcow2 -snapshot
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" 
+wrote 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) qququiquit
+
+Testing: -drive file=TEST_DIR/t.qcow2,snapshot=on
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" 
+wrote 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) qququiquit
+
+read 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+Testing: -drive file=TEST_DIR/t.qcow2,snapshot=off
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x2qemu-io ide0-hd0 "w! rite -P 0x22qemu-io ide0-hd0 "write -P 0x22 qemu-io ide0-hd0 "write -P 0x22 0qemu-io ide0-hd0 "write -P 0x22 0 qemu-io ide0-hd0 "write -P 0x22 0 4qemu-io ide0-hd0 "write -P 0x22 0 4kqemu-io ide0-hd0 "write -P 0x22 0 4k" 
+wrote 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) qququiquit
+
+read 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+Testing: -drive file=TEST_DIR/t.qcow2,snapshot=on
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io iqemu-io idqemu-io ideqemu-io ide0qemu-io ide0-qemu-io ide0-hqemu-io ide0-hdqemu-io ide0-hd0qemu-io ide0-hd0 qemu-io ide0-hd0 "qemu-io ide0-hd0 "wqemu-io ide0-hd0 "wrqemu-io ide0-hd0 "wri! qemu-io ide0-hd0 "writqemu-io ide0-hd0 "writeqemu-io ide0-hd0 "write qemu-io ide0-hd0 "write -qemu-io ide0-hd0 "write -Pqemu-io ide0-hd0 "write -P qemu-io ide0-hd0 "write -P 0qemu-io ide0-hd0 "write -P 0xqemu-io ide0-hd0 "write -P 0x3qemu-io ide0-hd0 "w! rite -P 0x33qemu-io ide0-hd0 "write -P 0x33 qemu-io ide0-hd0 "write -P 0x33 0qemu-io ide0-hd0 "write -P 0x33 0 qemu-io ide0-hd0 "write -P 0x33 0 4qemu-io ide0-hd0 "write -P 0x33 0 4kqemu-io ide0-hd0 "write -P 0x33 0 4k" 
+wrote 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) ccocomcommcommicommitcommit commit icommit idcommit idecommit ide0commit ide0-commit ide0-hcommit ide0-hdcommit ide0-hd0 
+(qemu) qququiquit
+
+read 4096/4096 bytes at offset 0
+4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+*** done
diff --git a/tests/qemu-iotests/common.filter b/tests/qemu-iotests/common.filter 
index 012a812..db86fd7 100644
--- a/tests/qemu-iotests/common.filter
+++ b/tests/qemu-iotests/common.filter
@@ -154,9 +154,16 @@ _filter_qemu_io()
          -e "s/qemu-io> //g"
  }
  +# removes orphan warnings
+_filter_orphan()
+{
+    sed -e 's/ Warning: Orphaned drive without device:.*$//g'
+}
+
  # replace occurrences of QEMU_PROG with "qemu"
  _filter_qemu()
  {
+    _filter_orphan | \
sed -e "s#\\(^\\|(qemu) \\)$(basename $QEMU_PROG):#\1QEMU_PROG:#" \ -e 's#^QEMU [0-9]\+\.[0-9]\+\.[0-9]\+ monitor#QEMU X.Y.Z monitor#' \ -e '/main-loop: WARNING: I\/O thread spun for [0-9]\+ iterations/d' \

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