29 files changed, 725 insertions, 198 deletions

diff --git a/tests/qemu-iotests/026 b/tests/qemu-iotests/026
index f5a7f02b25..7fadfbace5 100755
--- a/tests/qemu-iotests/026
+++ b/tests/qemu-iotests/026
@@ -119,7 +119,7 @@ done
 
 
 echo
-echo === Refcout table growth tests ===
+echo === Refcount table growth tests ===
 echo
 CLUSTER_SIZE=512
 
diff --git a/tests/qemu-iotests/026.out b/tests/qemu-iotests/026.out
index 59b8f74cd4..86a50a2e13 100644
--- a/tests/qemu-iotests/026.out
+++ b/tests/qemu-iotests/026.out
@@ -462,7 +462,7 @@ Event: cluster_alloc; errno: 28; imm: off; once: off; write -b
 write failed: No space left on device
 No errors were found on the image.
 
-=== Refcout table growth tests ===
+=== Refcount table growth tests ===
 
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
 
diff --git a/tests/qemu-iotests/026.out.nocache b/tests/qemu-iotests/026.out.nocache
index b4aeebcc61..ea2e166a4e 100644
--- a/tests/qemu-iotests/026.out.nocache
+++ b/tests/qemu-iotests/026.out.nocache
@@ -470,7 +470,7 @@ Event: cluster_alloc; errno: 28; imm: off; once: off; write -b
 write failed: No space left on device
 No errors were found on the image.
 
-=== Refcout table growth tests ===
+=== Refcount table growth tests ===
 
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
diff --git a/tests/qemu-iotests/028.out b/tests/qemu-iotests/028.out
index acd2870bae..7d54aeb003 100644
--- a/tests/qemu-iotests/028.out
+++ b/tests/qemu-iotests/028.out
@@ -469,7 +469,7 @@ No errors were found on the image.
 block-backup
 
 Formatting 'TEST_DIR/t.IMGFMT.copy', fmt=IMGFMT size=4294968832 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block-info block-jinfo block-joinfo block-jobinfo block-jobs
+(qemu) info block-jobs
 No active jobs
 === IO: pattern 195
 read 512/512 bytes at offset 3221194240
diff --git a/tests/qemu-iotests/051 b/tests/qemu-iotests/051
index 630cb7a114..26c29deb51 100755
--- a/tests/qemu-iotests/051
+++ b/tests/qemu-iotests/051
@@ -60,7 +60,8 @@ function do_run_qemu()
 
 function run_qemu()
 {
-    do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu | _filter_generated_node_ids
+    do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu |
+        _filter_generated_node_ids | _filter_hmp
 }
 
 size=128M
@@ -231,6 +232,7 @@ echo === Leaving out required options ===
 echo
 
 run_qemu -drive driver=file
+run_qemu -drive driver=file,filename=
 run_qemu -drive driver=nbd
 run_qemu -drive driver=raw
 run_qemu -drive file.driver=file
diff --git a/tests/qemu-iotests/051.out b/tests/qemu-iotests/051.out
index 7524c62025..4d3b1ff316 100644
--- a/tests/qemu-iotests/051.out
+++ b/tests/qemu-iotests/051.out
@@ -58,12 +58,12 @@ QEMU X.Y.Z monitor - type 'help' for more information
 
 Testing: -drive file=TEST_DIR/t.qcow2,driver=qcow2,backing.file.filename=TEST_DIR/t.qcow2.orig,if=none,id=drive0 -nodefaults
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo block
+(qemu) info block
 drive0 (NODE_NAME): TEST_DIR/t.qcow2 (qcow2)
     Removable device: not locked, tray closed
     Cache mode:       writeback
     Backing file:     TEST_DIR/t.qcow2.orig (chain depth: 1)
-(qemu) qququiquit
+(qemu) quit
 
 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
@@ -79,11 +79,11 @@ QEMU_PROG: -drive file=TEST_DIR/t.qcow2,file.backing.driver=qcow2,file.backing.f
 
 Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=on
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=off
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 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'
@@ -103,7 +103,7 @@ QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=on: Lazy ref
 
 Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=off
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 
 === No medium ===
@@ -117,93 +117,93 @@ QEMU X.Y.Z monitor - type 'help' for more information
 
 Testing: -drive file=TEST_DIR/t.qcow2,if=virtio,readonly=on
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 
 === Cache modes ===
 
 Testing: -drive driver=null-co,cache=none
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive driver=null-co,cache=directsync
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive driver=null-co,cache=writeback
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive driver=null-co,cache=writethrough
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive driver=null-co,cache=unsafe
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive driver=null-co,cache=invalid_value
 QEMU_PROG: -drive driver=null-co,cache=invalid_value: invalid cache option
 
 Testing: -drive file=TEST_DIR/t.qcow2,cache=writeback,backing.file.filename=TEST_DIR/t.qcow2.base,backing.cache.no-flush=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,if=none,id=drive0 -nodefaults
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo block
+(qemu) info block
 drive0 (NODE_NAME): TEST_DIR/t.qcow2 (qcow2)
     Removable device: not locked, tray closed
     Cache mode:       writeback
     Backing file:     TEST_DIR/t.qcow2.base (chain depth: 1)
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block finfo block fiinfo block filinfo block file
+(qemu) info block file
 
 file: TEST_DIR/t.qcow2 (file)
     Cache mode:       writeback
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block binfo block bainfo block bacinfo block backinfo block backiinfo block backininfo block backing
+(qemu) info block backing
 backing: TEST_DIR/t.qcow2.base (qcow2, read-only)
     Cache mode:       writeback, ignore flushes
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block binfo block bainfo block bacinfo block backinfo block backiinfo block backininfo block backinginfo block backing-info block backing-finfo block backing-fiinfo block backing-filinfo block backing-file
+(qemu) info block backing-file
 
 backing-file: TEST_DIR/t.qcow2.base (file, read-only)
     Cache mode:       writeback, ignore flushes
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,cache=writethrough,backing.file.filename=TEST_DIR/t.qcow2.base,backing.cache.no-flush=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,if=none,id=drive0 -nodefaults
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo block
+(qemu) info block
 drive0 (NODE_NAME): TEST_DIR/t.qcow2 (qcow2)
     Removable device: not locked, tray closed
     Cache mode:       writethrough
     Backing file:     TEST_DIR/t.qcow2.base (chain depth: 1)
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block finfo block fiinfo block filinfo block file
+(qemu) info block file
 
 file: TEST_DIR/t.qcow2 (file)
     Cache mode:       writeback
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block binfo block bainfo block bacinfo block backinfo block backiinfo block backininfo block backing
+(qemu) info block backing
 backing: TEST_DIR/t.qcow2.base (qcow2, read-only)
     Cache mode:       writeback, ignore flushes
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block binfo block bainfo block bacinfo block backinfo block backiinfo block backininfo block backinginfo block backing-info block backing-finfo block backing-fiinfo block backing-filinfo block backing-file
+(qemu) info block backing-file
 
 backing-file: TEST_DIR/t.qcow2.base (file, read-only)
     Cache mode:       writeback, ignore flushes
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,cache=unsafe,backing.file.filename=TEST_DIR/t.qcow2.base,backing.cache.no-flush=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,if=none,id=drive0 -nodefaults
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo block
+(qemu) info block
 drive0 (NODE_NAME): TEST_DIR/t.qcow2 (qcow2)
     Removable device: not locked, tray closed
     Cache mode:       writeback, ignore flushes
     Backing file:     TEST_DIR/t.qcow2.base (chain depth: 1)
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block finfo block fiinfo block filinfo block file
+(qemu) info block file
 
 file: TEST_DIR/t.qcow2 (file)
     Cache mode:       writeback, ignore flushes
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block binfo block bainfo block bacinfo block backinfo block backiinfo block backininfo block backing
+(qemu) info block backing
 backing: TEST_DIR/t.qcow2.base (qcow2, read-only)
     Cache mode:       writeback, ignore flushes
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block binfo block bainfo block bacinfo block backinfo block backiinfo block backininfo block backinginfo block backing-info block backing-finfo block backing-fiinfo block backing-filinfo block backing-file
+(qemu) info block backing-file
 
 backing-file: TEST_DIR/t.qcow2.base (file, read-only)
     Cache mode:       writeback, ignore flushes
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,cache=invalid_value,backing.file.filename=TEST_DIR/t.qcow2.base,backing.cache.no-flush=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,if=none,id=drive0 -nodefaults
 QEMU_PROG: -drive file=TEST_DIR/t.qcow2,cache=invalid_value,backing.file.filename=TEST_DIR/t.qcow2.base,backing.cache.no-flush=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,if=none,id=drive0: invalid cache option
@@ -213,7 +213,7 @@ QEMU_PROG: -drive file=TEST_DIR/t.qcow2,cache=invalid_value,backing.file.filenam
 
 Testing: -drive file=TEST_DIR/t.qcow2,file.driver=file
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 
 === Leaving out required options ===
@@ -221,6 +221,9 @@ QEMU X.Y.Z monitor - type 'help' for more information
 Testing: -drive driver=file
 QEMU_PROG: -drive driver=file: The 'file' block driver requires a file name
 
+Testing: -drive driver=file,filename=
+QEMU_PROG: -drive driver=file,filename=: The 'file' block driver requires a file name
+
 Testing: -drive driver=nbd
 QEMU_PROG: -drive driver=nbd: NBD server address missing
 
@@ -307,15 +310,15 @@ QEMU_PROG: -drive file=TEST_DIR/t.qcow2,throttling.bps-total=-5: bps/iops/max va
 
 Testing: -drive file=TEST_DIR/t.qcow2,bps=0
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,bps=1
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,bps=1000000000000000
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,bps=1000000000000001
 QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps=1000000000000001: bps/iops/max values must be within [0, 1000000000000000]
@@ -337,11 +340,11 @@ QEMU_PROG: -drive file.filename=foo:bar: Could not open 'foo:bar': No such file
 
 Testing: -hda file:TEST_DIR/t.qcow2
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=file:TEST_DIR/t.qcow2
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 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
@@ -353,78 +356,78 @@ 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,if=none,id=drive0 -snapshot
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,snapshot=on,if=none,id=drive0
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 Testing: -drive file.filename=TEST_DIR/t.qcow2,driver=qcow2,snapshot=on,if=none,id=drive0
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 Testing: -drive file.filename=TEST_DIR/t.qcow2,driver=qcow2,if=none,id=drive0 -snapshot
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 Testing: -drive file=file:TEST_DIR/t.qcow2,if=none,id=drive0 -snapshot
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 Testing: -drive file=file:TEST_DIR/t.qcow2,snapshot=on,if=none,id=drive0
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=drive0 -snapshot
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,snapshot=on,if=none,id=drive0
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 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,if=none,id=drive0
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 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,if=none,id=drive0
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x3qemu-io drive0 "write -P 0x33qemu-io drive0 "write -P 0x33 qemu-io drive0 "write -P 0x33 0qemu-io drive0 "write -P 0x33 0 qemu-io drive0 "write -P 0x33 0 4qemu-io drive0 "write -P 0x33 0 4kqemu-io drive0 "write -P 0x33 0 4k"
+(qemu) qemu-io drive0 "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 dcommit drcommit dricommit drivcommit drivecommit drive0
-(qemu) qququiquit
+(qemu) commit drive0
+(qemu) quit
 
 read 4096/4096 bytes at offset 0
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
diff --git a/tests/qemu-iotests/051.pc.out b/tests/qemu-iotests/051.pc.out
index c6f4eef215..76d7205460 100644
--- a/tests/qemu-iotests/051.pc.out
+++ b/tests/qemu-iotests/051.pc.out
@@ -58,12 +58,12 @@ QEMU X.Y.Z monitor - type 'help' for more information
 
 Testing: -drive file=TEST_DIR/t.qcow2,driver=qcow2,backing.file.filename=TEST_DIR/t.qcow2.orig,if=none,id=drive0 -nodefaults
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo block
+(qemu) info block
 drive0 (NODE_NAME): TEST_DIR/t.qcow2 (qcow2)
     Removable device: not locked, tray closed
     Cache mode:       writeback
     Backing file:     TEST_DIR/t.qcow2.orig (chain depth: 1)
-(qemu) qququiquit
+(qemu) quit
 
 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
@@ -79,11 +79,11 @@ QEMU_PROG: -drive file=TEST_DIR/t.qcow2,file.backing.driver=qcow2,file.backing.f
 
 Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=on
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=off
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 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'
@@ -103,23 +103,23 @@ QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=on: Lazy ref
 
 Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=off
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 
 === No medium ===
 
 Testing: -drive if=floppy
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive if=ide,media=cdrom
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive if=scsi,media=cdrom
 QEMU X.Y.Z monitor - type 'help' for more information
 (qemu) QEMU_PROG: -drive if=scsi,media=cdrom: warning: bus=0,unit=0 is deprecated with this machine type
-qququiquit
+quit
 
 Testing: -drive if=ide
 QEMU X.Y.Z monitor - type 'help' for more information
@@ -137,11 +137,11 @@ QEMU X.Y.Z monitor - type 'help' for more information
 
 Testing: -drive if=none,id=disk -device ide-cd,drive=disk
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 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
+(qemu) quit
 
 Testing: -drive if=none,id=disk -device ide-drive,drive=disk
 QEMU X.Y.Z monitor - type 'help' for more information
@@ -166,16 +166,16 @@ QEMU X.Y.Z monitor - type 'help' for more information
 
 Testing: -drive file=TEST_DIR/t.qcow2,if=floppy,readonly=on
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 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) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,if=scsi,media=cdrom,readonly=on
 QEMU X.Y.Z monitor - type 'help' for more information
 (qemu) QEMU_PROG: -drive file=TEST_DIR/t.qcow2,if=scsi,media=cdrom,readonly=on: warning: bus=0,unit=0 is deprecated with this machine type
-qququiquit
+quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,if=ide,readonly=on
 QEMU X.Y.Z monitor - type 'help' for more information
@@ -185,19 +185,19 @@ QEMU_PROG: Initialization of device ide-hd failed: Device initialization failed.
 Testing: -drive file=TEST_DIR/t.qcow2,if=scsi,readonly=on
 QEMU X.Y.Z monitor - type 'help' for more information
 (qemu) QEMU_PROG: -drive file=TEST_DIR/t.qcow2,if=scsi,readonly=on: warning: bus=0,unit=0 is deprecated with this machine type
-qququiquit
+quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,if=virtio,readonly=on
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 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
+(qemu) quit
 
 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
+(qemu) quit
 
 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
@@ -211,97 +211,97 @@ QEMU_PROG: -device ide-hd,drive=disk: Device initialization failed.
 
 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
+(qemu) quit
 
 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) quit
 
 
 === Cache modes ===
 
 Testing: -drive driver=null-co,cache=none
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive driver=null-co,cache=directsync
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive driver=null-co,cache=writeback
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive driver=null-co,cache=writethrough
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive driver=null-co,cache=unsafe
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive driver=null-co,cache=invalid_value
 QEMU_PROG: -drive driver=null-co,cache=invalid_value: invalid cache option
 
 Testing: -drive file=TEST_DIR/t.qcow2,cache=writeback,backing.file.filename=TEST_DIR/t.qcow2.base,backing.cache.no-flush=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,if=none,id=drive0 -nodefaults
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo block
+(qemu) info block
 drive0 (NODE_NAME): TEST_DIR/t.qcow2 (qcow2)
     Removable device: not locked, tray closed
     Cache mode:       writeback
     Backing file:     TEST_DIR/t.qcow2.base (chain depth: 1)
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block finfo block fiinfo block filinfo block file
+(qemu) info block file
 
 file: TEST_DIR/t.qcow2 (file)
     Cache mode:       writeback
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block binfo block bainfo block bacinfo block backinfo block backiinfo block backininfo block backing
+(qemu) info block backing
 backing: TEST_DIR/t.qcow2.base (qcow2, read-only)
     Cache mode:       writeback, ignore flushes
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block binfo block bainfo block bacinfo block backinfo block backiinfo block backininfo block backinginfo block backing-info block backing-finfo block backing-fiinfo block backing-filinfo block backing-file
+(qemu) info block backing-file
 
 backing-file: TEST_DIR/t.qcow2.base (file, read-only)
     Cache mode:       writeback, ignore flushes
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,cache=writethrough,backing.file.filename=TEST_DIR/t.qcow2.base,backing.cache.no-flush=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,if=none,id=drive0 -nodefaults
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo block
+(qemu) info block
 drive0 (NODE_NAME): TEST_DIR/t.qcow2 (qcow2)
     Removable device: not locked, tray closed
     Cache mode:       writethrough
     Backing file:     TEST_DIR/t.qcow2.base (chain depth: 1)
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block finfo block fiinfo block filinfo block file
+(qemu) info block file
 
 file: TEST_DIR/t.qcow2 (file)
     Cache mode:       writeback
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block binfo block bainfo block bacinfo block backinfo block backiinfo block backininfo block backing
+(qemu) info block backing
 backing: TEST_DIR/t.qcow2.base (qcow2, read-only)
     Cache mode:       writeback, ignore flushes
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block binfo block bainfo block bacinfo block backinfo block backiinfo block backininfo block backinginfo block backing-info block backing-finfo block backing-fiinfo block backing-filinfo block backing-file
+(qemu) info block backing-file
 
 backing-file: TEST_DIR/t.qcow2.base (file, read-only)
     Cache mode:       writeback, ignore flushes
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,cache=unsafe,backing.file.filename=TEST_DIR/t.qcow2.base,backing.cache.no-flush=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,if=none,id=drive0 -nodefaults
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo block
+(qemu) info block
 drive0 (NODE_NAME): TEST_DIR/t.qcow2 (qcow2)
     Removable device: not locked, tray closed
     Cache mode:       writeback, ignore flushes
     Backing file:     TEST_DIR/t.qcow2.base (chain depth: 1)
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block finfo block fiinfo block filinfo block file
+(qemu) info block file
 
 file: TEST_DIR/t.qcow2 (file)
     Cache mode:       writeback, ignore flushes
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block binfo block bainfo block bacinfo block backinfo block backiinfo block backininfo block backing
+(qemu) info block backing
 backing: TEST_DIR/t.qcow2.base (qcow2, read-only)
     Cache mode:       writeback, ignore flushes
-(qemu) iininfinfoinfo info binfo blinfo bloinfo blocinfo blockinfo block info block binfo block bainfo block bacinfo block backinfo block backiinfo block backininfo block backinginfo block backing-info block backing-finfo block backing-fiinfo block backing-filinfo block backing-file
+(qemu) info block backing-file
 
 backing-file: TEST_DIR/t.qcow2.base (file, read-only)
     Cache mode:       writeback, ignore flushes
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,cache=invalid_value,backing.file.filename=TEST_DIR/t.qcow2.base,backing.cache.no-flush=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,if=none,id=drive0 -nodefaults
 QEMU_PROG: -drive file=TEST_DIR/t.qcow2,cache=invalid_value,backing.file.filename=TEST_DIR/t.qcow2.base,backing.cache.no-flush=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,if=none,id=drive0: invalid cache option
@@ -311,7 +311,7 @@ QEMU_PROG: -drive file=TEST_DIR/t.qcow2,cache=invalid_value,backing.file.filenam
 
 Testing: -drive file=TEST_DIR/t.qcow2,file.driver=file
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 
 === Leaving out required options ===
@@ -319,6 +319,9 @@ QEMU X.Y.Z monitor - type 'help' for more information
 Testing: -drive driver=file
 QEMU_PROG: -drive driver=file: The 'file' block driver requires a file name
 
+Testing: -drive driver=file,filename=
+QEMU_PROG: -drive driver=file,filename=: The 'file' block driver requires a file name
+
 Testing: -drive driver=nbd
 QEMU_PROG: -drive driver=nbd: NBD server address missing
 
@@ -405,15 +408,15 @@ QEMU_PROG: -drive file=TEST_DIR/t.qcow2,throttling.bps-total=-5: bps/iops/max va
 
 Testing: -drive file=TEST_DIR/t.qcow2,bps=0
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,bps=1
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,bps=1000000000000000
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,bps=1000000000000001
 QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps=1000000000000001: bps/iops/max values must be within [0, 1000000000000000]
@@ -435,11 +438,11 @@ QEMU_PROG: -drive file.filename=foo:bar: Could not open 'foo:bar': No such file
 
 Testing: -hda file:TEST_DIR/t.qcow2
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=file:TEST_DIR/t.qcow2
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 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
@@ -451,78 +454,78 @@ 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,if=none,id=drive0 -snapshot
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,snapshot=on,if=none,id=drive0
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 Testing: -drive file.filename=TEST_DIR/t.qcow2,driver=qcow2,snapshot=on,if=none,id=drive0
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 Testing: -drive file.filename=TEST_DIR/t.qcow2,driver=qcow2,if=none,id=drive0 -snapshot
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 Testing: -drive file=file:TEST_DIR/t.qcow2,if=none,id=drive0 -snapshot
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 Testing: -drive file=file:TEST_DIR/t.qcow2,snapshot=on,if=none,id=drive0
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=drive0 -snapshot
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,snapshot=on,if=none,id=drive0
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 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,if=none,id=drive0
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x2qemu-io drive0 "write -P 0x22qemu-io drive0 "write -P 0x22 qemu-io drive0 "write -P 0x22 0qemu-io drive0 "write -P 0x22 0 qemu-io drive0 "write -P 0x22 0 4qemu-io drive0 "write -P 0x22 0 4kqemu-io drive0 "write -P 0x22 0 4k"
+(qemu) qemu-io drive0 "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
+(qemu) quit
 
 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,if=none,id=drive0
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qqeqemqemuqemu-qemu-iqemu-ioqemu-io qemu-io dqemu-io drqemu-io driqemu-io drivqemu-io driveqemu-io drive0qemu-io drive0 qemu-io drive0 "qemu-io drive0 "wqemu-io drive0 "wrqemu-io drive0 "wriqemu-io drive0 "writqemu-io drive0 "writeqemu-io drive0 "write qemu-io drive0 "write -qemu-io drive0 "write -Pqemu-io drive0 "write -P qemu-io drive0 "write -P 0qemu-io drive0 "write -P 0xqemu-io drive0 "write -P 0x3qemu-io drive0 "write -P 0x33qemu-io drive0 "write -P 0x33 qemu-io drive0 "write -P 0x33 0qemu-io drive0 "write -P 0x33 0 qemu-io drive0 "write -P 0x33 0 4qemu-io drive0 "write -P 0x33 0 4kqemu-io drive0 "write -P 0x33 0 4k"
+(qemu) qemu-io drive0 "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 dcommit drcommit dricommit drivcommit drivecommit drive0
-(qemu) qququiquit
+(qemu) commit drive0
+(qemu) quit
 
 read 4096/4096 bytes at offset 0
 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
diff --git a/tests/qemu-iotests/066 b/tests/qemu-iotests/066
index 364166d3b2..c2116a3088 100755
--- a/tests/qemu-iotests/066
+++ b/tests/qemu-iotests/066
@@ -42,16 +42,18 @@ _supported_fmt qcow2
 _supported_proto generic
 _supported_os Linux
 
+# Intentionally create an unaligned image
 IMGOPTS="compat=1.1"
-IMG_SIZE=64M
+IMG_SIZE=$((64 * 1024 * 1024 + 512))
 
 echo
-echo "=== Testing snapshotting an image with zero clusters ==="
+echo "=== Testing cluster discards ==="
 echo
 _make_test_img $IMG_SIZE
-# Write some normal clusters, zero them (creating preallocated zero clusters)
-# and discard those
-$QEMU_IO -c "write 0 256k" -c "write -z 0 256k" -c "discard 0 256k" "$TEST_IMG" \
+# Write some normal clusters, zero some of them (creating preallocated
+# zero clusters) and discard everything. Everything should now read as 0.
+$QEMU_IO -c "write 0 256k" -c "write -z 0 256k" -c "write 64M 512" \
+	 -c "discard 0 $IMG_SIZE" -c "read -P 0 0 $IMG_SIZE" "$TEST_IMG" \
          | _filter_qemu_io
 # Check the image (there shouldn't be any leaks)
 _check_test_img
diff --git a/tests/qemu-iotests/066.out b/tests/qemu-iotests/066.out
index 7bc9a107d5..7c1f31a1b1 100644
--- a/tests/qemu-iotests/066.out
+++ b/tests/qemu-iotests/066.out
@@ -1,13 +1,17 @@
 QA output created by 066
 
-=== Testing snapshotting an image with zero clusters ===
+=== Testing cluster discards ===
 
-Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67109376
 wrote 262144/262144 bytes at offset 0
 256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 wrote 262144/262144 bytes at offset 0
 256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-discard 262144/262144 bytes at offset 0
-256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 512/512 bytes at offset 67108864
+512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+discard 67109376/67109376 bytes at offset 0
+64 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 67109376/67109376 bytes at offset 0
+64 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 No errors were found on the image.
 *** done
diff --git a/tests/qemu-iotests/068 b/tests/qemu-iotests/068
index 68f6e825d9..9c1687d01d 100755
--- a/tests/qemu-iotests/068
+++ b/tests/qemu-iotests/068
@@ -62,11 +62,11 @@ esac
 # Give qemu some time to boot before saving the VM state
 bash -c 'sleep 1; echo -e "savevm 0\nquit"' |\
     $QEMU $platform_parm -nographic -monitor stdio -serial none -hda "$TEST_IMG" |\
-    _filter_qemu
+    _filter_qemu | _filter_hmp
 # Now try to continue from that VM state (this should just work)
 echo quit |\
     $QEMU $platform_parm -nographic -monitor stdio -serial none -hda "$TEST_IMG" -loadvm 0 |\
-    _filter_qemu
+    _filter_qemu | _filter_hmp
 
 # success, all done
 echo "*** done"
diff --git a/tests/qemu-iotests/068.out b/tests/qemu-iotests/068.out
index 84f19b4ffd..0fa5340c22 100644
--- a/tests/qemu-iotests/068.out
+++ b/tests/qemu-iotests/068.out
@@ -4,8 +4,8 @@ QA output created by 068
 
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=131072
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) ssasavsavesavevsavevmsavevm savevm 0
-(qemu) qququiquit
+(qemu) savevm 0
+(qemu) quit
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 *** done
diff --git a/tests/qemu-iotests/109 b/tests/qemu-iotests/109
index 6161633a52..3b496a3918 100755
--- a/tests/qemu-iotests/109
+++ b/tests/qemu-iotests/109
@@ -81,7 +81,8 @@ for fmt in qcow qcow2 qed vdi vmdk vpc; do
 
     # This first test should fail: The image format was probed, we may not
     # write an image header at the start of the image
-    run_qemu "$TEST_IMG" "$TEST_IMG.src" "" "BLOCK_JOB_ERROR"
+    run_qemu "$TEST_IMG" "$TEST_IMG.src" "" "BLOCK_JOB_ERROR" |
+        _filter_block_job_len
     $QEMU_IO -c 'read -P 0 0 64k' "$TEST_IMG" | _filter_qemu_io
 
 
@@ -104,7 +105,8 @@ for sample_img in empty.bochs iotest-dirtylog-10G-4M.vhdx parallels-v1 \
     _make_test_img 64M
     bzcat "$SAMPLE_IMG_DIR/$sample_img.bz2" > "$TEST_IMG.src"
 
-    run_qemu "$TEST_IMG" "$TEST_IMG.src" "" "BLOCK_JOB_ERROR" | _filter_block_job_offset
+    run_qemu "$TEST_IMG" "$TEST_IMG.src" "" "BLOCK_JOB_ERROR" |
+        _filter_block_job_offset | _filter_block_job_len
     $QEMU_IO -c 'read -P 0 0 64k' "$TEST_IMG" | _filter_qemu_io
 
     run_qemu "$TEST_IMG" "$TEST_IMG.src" "'format': 'raw'," "BLOCK_JOB_READY"
diff --git a/tests/qemu-iotests/109.out b/tests/qemu-iotests/109.out
index 55fe536d56..dc02f9eefa 100644
--- a/tests/qemu-iotests/109.out
+++ b/tests/qemu-iotests/109.out
@@ -10,7 +10,7 @@ Automatically detecting the format is dangerous for raw images, write operations
 Specify the 'raw' format explicitly to remove the restrictions.
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
 {"return": []}
 read 65536/65536 bytes at offset 0
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -31,7 +31,7 @@ Automatically detecting the format is dangerous for raw images, write operations
 Specify the 'raw' format explicitly to remove the restrictions.
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 197120, "offset": 512, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": 512, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
 {"return": []}
 read 65536/65536 bytes at offset 0
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -52,7 +52,7 @@ Automatically detecting the format is dangerous for raw images, write operations
 Specify the 'raw' format explicitly to remove the restrictions.
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 327680, "offset": 262144, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": 262144, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
 {"return": []}
 read 65536/65536 bytes at offset 0
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -73,7 +73,7 @@ Automatically detecting the format is dangerous for raw images, write operations
 Specify the 'raw' format explicitly to remove the restrictions.
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
 {"return": []}
 read 65536/65536 bytes at offset 0
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -94,7 +94,7 @@ Automatically detecting the format is dangerous for raw images, write operations
 Specify the 'raw' format explicitly to remove the restrictions.
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
 {"return": []}
 read 65536/65536 bytes at offset 0
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -115,7 +115,7 @@ Automatically detecting the format is dangerous for raw images, write operations
 Specify the 'raw' format explicitly to remove the restrictions.
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
 {"return": []}
 read 65536/65536 bytes at offset 0
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -135,7 +135,7 @@ Automatically detecting the format is dangerous for raw images, write operations
 Specify the 'raw' format explicitly to remove the restrictions.
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": OFFSET, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": OFFSET, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
 {"return": []}
 read 65536/65536 bytes at offset 0
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -155,7 +155,7 @@ Automatically detecting the format is dangerous for raw images, write operations
 Specify the 'raw' format explicitly to remove the restrictions.
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 31457280, "offset": OFFSET, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": OFFSET, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
 {"return": []}
 read 65536/65536 bytes at offset 0
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -175,7 +175,7 @@ Automatically detecting the format is dangerous for raw images, write operations
 Specify the 'raw' format explicitly to remove the restrictions.
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 327680, "offset": OFFSET, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": OFFSET, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
 {"return": []}
 read 65536/65536 bytes at offset 0
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -195,7 +195,7 @@ Automatically detecting the format is dangerous for raw images, write operations
 Specify the 'raw' format explicitly to remove the restrictions.
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": OFFSET, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": OFFSET, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
 {"return": []}
 read 65536/65536 bytes at offset 0
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
diff --git a/tests/qemu-iotests/122.out b/tests/qemu-iotests/122.out
index 98814de5d6..9317d801ad 100644
--- a/tests/qemu-iotests/122.out
+++ b/tests/qemu-iotests/122.out
@@ -61,8 +61,8 @@ read 65536/65536 bytes at offset 4194304
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 read 65536/65536 bytes at offset 8388608
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-qemu-img: -B makes no sense when concatenating multiple input images
-qemu-img: -B makes no sense when concatenating multiple input images
+qemu-img: Having a backing file for the target makes no sense when concatenating multiple input images
+qemu-img: Having a backing file for the target makes no sense when concatenating multiple input images
 
 === Compression with misaligned allocations and image sizes ===
 
diff --git a/tests/qemu-iotests/130.out b/tests/qemu-iotests/130.out
index ae95b5027a..93020c328e 100644
--- a/tests/qemu-iotests/130.out
+++ b/tests/qemu-iotests/130.out
@@ -9,14 +9,14 @@ virtual size: 64M (67108864 bytes)
 === HMP commit ===
 
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) ccocomcommcommicommitcommit commit tcommit tecommit tescommit testcommit testdcommit testdicommit testdiscommit testdisk
+(qemu) commit testdisk
 (qemu) 
 image: TEST_DIR/t.IMGFMT
 file format: IMGFMT
 virtual size: 64M (67108864 bytes)
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 backing_file=TEST_DIR/t.IMGFMT.orig backing_fmt=raw
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) ccocomcommcommicommitcommit commit tcommit tecommit tescommit testcommit testdcommit testdicommit testdiscommit testdisk
+(qemu) commit testdisk
 (qemu) 
 image: TEST_DIR/t.IMGFMT
 file format: IMGFMT
diff --git a/tests/qemu-iotests/142 b/tests/qemu-iotests/142
index 29c0606bd7..9a5b713256 100755
--- a/tests/qemu-iotests/142
+++ b/tests/qemu-iotests/142
@@ -62,7 +62,7 @@ function do_run_qemu()
 
 function run_qemu()
 {
-    do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu
+    do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu | _filter_hmp
 }
 
 size=128M
diff --git a/tests/qemu-iotests/142.out b/tests/qemu-iotests/142.out
index 600beca8fb..3667e38def 100644
--- a/tests/qemu-iotests/142.out
+++ b/tests/qemu-iotests/142.out
@@ -7,23 +7,23 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/
 
 Testing: -drive file=TEST_DIR/t.qcow2,cache=none
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,cache=directsync
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,cache=writeback
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,cache=writethrough
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,cache=unsafe
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 
 Testing: -drive file=TEST_DIR/t.qcow2,cache=invalid_value
 QEMU_PROG: -drive file=TEST_DIR/t.qcow2,cache=invalid_value: invalid cache option
diff --git a/tests/qemu-iotests/145 b/tests/qemu-iotests/145
index 1eca0e8990..e6c6bc4a4f 100755
--- a/tests/qemu-iotests/145
+++ b/tests/qemu-iotests/145
@@ -43,7 +43,8 @@ _supported_proto generic
 _supported_os Linux
 
 _make_test_img 1M
-echo quit | $QEMU -nographic -hda "$TEST_IMG" -incoming 'exec:true' -snapshot -serial none -monitor stdio | _filter_qemu
+echo quit | $QEMU -nographic -hda "$TEST_IMG" -incoming 'exec:true' -snapshot -serial none -monitor stdio |
+    _filter_qemu | _filter_hmp
 
 # success, all done
 echo "*** done"
diff --git a/tests/qemu-iotests/145.out b/tests/qemu-iotests/145.out
index 75b5c8ac36..9a90009e44 100644
--- a/tests/qemu-iotests/145.out
+++ b/tests/qemu-iotests/145.out
@@ -1,5 +1,5 @@
 QA output created by 145
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
+(qemu) quit
 *** done
diff --git a/tests/qemu-iotests/181 b/tests/qemu-iotests/181
new file mode 100755
index 0000000000..e969a2a94f
--- /dev/null
+++ b/tests/qemu-iotests/181
@@ -0,0 +1,119 @@
+#!/bin/bash
+#
+# Test postcopy live migration with shared storage
+#
+# Copyright (C) 2017 Red Hat, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+# creator
+owner=kwolf@redhat.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+status=1	# failure is the default!
+
+MIG_SOCKET="${TEST_DIR}/migrate"
+
+_cleanup()
+{
+    rm -f "${MIG_SOCKET}"
+	_cleanup_test_img
+    _cleanup_qemu
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+. ./common.qemu
+
+_supported_fmt generic
+_supported_proto generic
+_supported_os Linux
+
+size=64M
+_make_test_img $size
+
+echo
+echo === Starting VMs ===
+echo
+
+qemu_comm_method="monitor"
+
+_launch_qemu \
+    -drive file="${TEST_IMG}",cache=${CACHEMODE},driver=$IMGFMT,id=disk
+src=$QEMU_HANDLE
+
+_launch_qemu \
+    -drive file="${TEST_IMG}",cache=${CACHEMODE},driver=$IMGFMT,id=disk \
+    -incoming "unix:${MIG_SOCKET}"
+dest=$QEMU_HANDLE
+
+echo
+echo === Write something on the source ===
+echo
+
+silent=
+_send_qemu_cmd $src 'qemu-io disk "write -P 0x55 0 64k"' "(qemu)"
+_send_qemu_cmd $src "" "ops/sec"
+_send_qemu_cmd $src 'qemu-io disk "read -P 0x55 0 64k"' "(qemu)"
+_send_qemu_cmd $src "" "ops/sec"
+
+echo
+echo === Do postcopy migration to destination ===
+echo
+
+# Slow down migration so much that it definitely won't finish before we can
+# switch to postcopy
+silent=yes
+_send_qemu_cmd $src 'migrate_set_speed 4k' "(qemu)"
+_send_qemu_cmd $src 'migrate_set_capability postcopy-ram on' "(qemu)"
+_send_qemu_cmd $src "migrate -d unix:${MIG_SOCKET}" "(qemu)"
+_send_qemu_cmd $src 'migrate_start_postcopy' "(qemu)"
+
+QEMU_COMM_TIMEOUT=1 qemu_cmd_repeat=10 silent=yes \
+    _send_qemu_cmd $src "info migrate" "completed\|failed"
+silent=yes _send_qemu_cmd $src "" "(qemu)"
+
+echo
+echo === Do some I/O on the destination ===
+echo
+
+# It is important that we use the BlockBackend of the guest device here instead
+# of the node name, which would create a new BlockBackend and not test whether
+# the guest has the necessary permissions to access the image now
+silent=
+_send_qemu_cmd $dest 'qemu-io disk "read -P 0x55 0 64k"' "(qemu)"
+_send_qemu_cmd $dest "" "ops/sec"
+_send_qemu_cmd $dest 'qemu-io disk "write -P 0x66 1M 64k"' "(qemu)"
+_send_qemu_cmd $dest "" "ops/sec"
+
+echo
+echo === Shut down and check image ===
+echo
+
+_send_qemu_cmd $src 'quit' ""
+_send_qemu_cmd $dest 'quit' ""
+wait=1 _cleanup_qemu
+
+_check_test_img
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0
diff --git a/tests/qemu-iotests/181.out b/tests/qemu-iotests/181.out
new file mode 100644
index 0000000000..6534ba2a76
--- /dev/null
+++ b/tests/qemu-iotests/181.out
@@ -0,0 +1,38 @@
+QA output created by 181
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
+
+=== Starting VMs ===
+
+
+=== Write something on the source ===
+
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qemu-io disk "write -P 0x55 0 64k"
+wrote 65536/65536 bytes at offset 0
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) 
+(qemu) qemu-io disk "read -P 0x55 0 64k"
+read 65536/65536 bytes at offset 0
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+=== Do postcopy migration to destination ===
+
+
+=== Do some I/O on the destination ===
+
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) qemu-io disk "read -P 0x55 0 64k"
+read 65536/65536 bytes at offset 0
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+(qemu) 
+(qemu) qemu-io disk "write -P 0x66 1M 64k"
+wrote 65536/65536 bytes at offset 1048576
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+=== Shut down and check image ===
+
+(qemu) quit
+(qemu) 
+(qemu) quit
+No errors were found on the image.
+*** done
diff --git a/tests/qemu-iotests/common b/tests/qemu-iotests/common
index 9c6f9721e5..f2a7199c4b 100644
--- a/tests/qemu-iotests/common
+++ b/tests/qemu-iotests/common
@@ -86,7 +86,8 @@ s/ .*//p
     elif $xgroup
     then
         # arg after -x
-        [ ! -s $tmp.list ] && ls [0-9][0-9][0-9] [0-9][0-9][0-9][0-9] >$tmp.list 2>/dev/null
+        # Populate $tmp.list with all tests
+        awk '/^[0-9]{3,}/ {print $1}' "${source_iotests}/group" > $tmp.list 2>/dev/null
         group_list=`sed -n <"$source_iotests/group" -e 's/$/ /' -e "/^[0-9][0-9][0-9].* $r /"'{
 s/ .*//p
 }'`
@@ -138,7 +139,7 @@ common options
     -v                  verbose
     -d                  debug
 
-check options
+image format options
     -raw                test raw (default)
     -bochs              test bochs
     -cloop              test cloop
@@ -150,14 +151,18 @@ check options
     -vpc                test vpc
     -vhdx               test vhdx
     -vmdk               test vmdk
+    -luks               test luks
+
+image protocol options
     -file               test file (default)
     -rbd                test rbd
     -sheepdog           test sheepdog
     -nbd                test nbd
     -ssh                test ssh
     -nfs                test nfs
-    -luks               test luks
     -vxhs               test vxhs
+
+other options
     -xdiff              graphical mode diff
     -nocache            use O_DIRECT on backing file
     -misalign           misalign memory allocations
diff --git a/tests/qemu-iotests/common.config b/tests/qemu-iotests/common.config
index c4b51b3509..d1b45f5447 100644
--- a/tests/qemu-iotests/common.config
+++ b/tests/qemu-iotests/common.config
@@ -75,18 +75,12 @@ _fatal()
     exit 1
 }
 
-export PERL_PROG="`set_prog_path perl`"
-[ "$PERL_PROG" = "" ] && _fatal "perl not found"
-
 export AWK_PROG="`set_prog_path awk`"
 [ "$AWK_PROG" = "" ] && _fatal "awk not found"
 
 export SED_PROG="`set_prog_path sed`"
 [ "$SED_PROG" = "" ] && _fatal "sed not found"
 
-export BC_PROG="`set_prog_path bc`"
-[ "$BC_PROG" = "" ] && _fatal "bc not found"
-
 export PS_ALL_FLAGS="-ef"
 
 if [ -z "$QEMU_PROG" ]; then
@@ -223,23 +217,5 @@ fi
 
 export SAMPLE_IMG_DIR
 
-_readlink()
-{
-    if [ $# -ne 1 ]; then
-        echo "Usage: _readlink filename" 1>&2
-        exit 1
-    fi
-
-    perl -e "\$in=\"$1\";" -e '
-    $lnk = readlink($in);
-    if ($lnk =~ m!^/.*!) {
-        print "$lnk\n";
-    }
-    else {
-        chomp($dir = `dirname $in`);
-        print "$dir/$lnk\n";
-    }'
-}
-
 # make sure this script returns success
 true
diff --git a/tests/qemu-iotests/common.filter b/tests/qemu-iotests/common.filter
index c9a2d5c595..f58548dc44 100644
--- a/tests/qemu-iotests/common.filter
+++ b/tests/qemu-iotests/common.filter
@@ -86,12 +86,25 @@ _filter_qmp()
         -e '    QMP_VERSION'
 }
 
+# readline makes HMP command strings so long that git complains
+_filter_hmp()
+{
+    sed -e $'s/^\\((qemu) \\)\\?.*\e\\[D/\\1/g' \
+        -e $'s/\e\\[K//g'
+}
+
 # replace block job offset
 _filter_block_job_offset()
 {
     sed -e 's/, "offset": [0-9]\+,/, "offset": OFFSET,/'
 }
 
+# replace block job len
+_filter_block_job_len()
+{
+    sed -e 's/, "len": [0-9]\+,/, "len": LEN,/g'
+}
+
 # replace driver-specific options in the "Formatting..." line
 _filter_img_create()
 {
diff --git a/tests/qemu-iotests/common.qemu b/tests/qemu-iotests/common.qemu
index 42787896af..7a78a00999 100644
--- a/tests/qemu-iotests/common.qemu
+++ b/tests/qemu-iotests/common.qemu
@@ -59,7 +59,7 @@ function _timed_wait_for()
     do
         if [ -z "${silent}" ]; then
             echo "${resp}" | _filter_testdir | _filter_qemu \
-                           | _filter_qemu_io | _filter_qmp
+                           | _filter_qemu_io | _filter_qmp | _filter_hmp
         fi
         grep -q "${*}" < <(echo ${resp})
         if [ $? -eq 0 ]; then
@@ -217,7 +217,7 @@ function _cleanup_qemu()
 
         if [ -n "${wait}" ]; then
             cat <&${QEMU_OUT[$i]} | _filter_testdir | _filter_qemu \
-                                  | _filter_qemu_io | _filter_qmp
+                                  | _filter_qemu_io | _filter_qmp | _filter_hmp
         fi
         rm -f "${QEMU_FIFO_IN}_${i}" "${QEMU_FIFO_OUT}_${i}"
         eval "exec ${QEMU_IN[$i]}<&-"   # close file descriptors
diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc
index 62529eed6e..9fd3130bde 100644
--- a/tests/qemu-iotests/common.rc
+++ b/tests/qemu-iotests/common.rc
@@ -171,7 +171,9 @@ _make_test_img()
 
     # Start an NBD server on the image file, which is what we'll be talking to
     if [ $IMGPROTO = "nbd" ]; then
-        eval "$QEMU_NBD -v -t -b 127.0.0.1 -p 10810 -f $IMGFMT  $TEST_IMG_FILE >/dev/null &"
+        # Pass a sufficiently high number to -e that should be enough for all
+        # tests
+        eval "$QEMU_NBD -v -t -b 127.0.0.1 -p 10810 -f $IMGFMT -e 42  $TEST_IMG_FILE >/dev/null &"
         sleep 1 # FIXME: qemu-nbd needs to be listening before we continue
     fi
 
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 43142ddfcf..893962d41e 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -169,3 +169,4 @@
 174 auto
 175 auto quick
 176 rw auto backing
+181 rw auto migration
diff --git a/tests/test-char.c b/tests/test-char.c
index da69f110e4..773a1c36ba 100644
--- a/tests/test-char.c
+++ b/tests/test-char.c
@@ -1,18 +1,35 @@
 #include "qemu/osdep.h"
+#include <glib/gstdio.h>
 
 #include "qemu-common.h"
 #include "qemu/config-file.h"
+#include "qemu/sockets.h"
 #include "sysemu/char.h"
 #include "sysemu/sysemu.h"
 #include "qapi/error.h"
+#include "qom/qom-qobject.h"
 #include "qmp-commands.h"
 
+static bool quit;
+
 typedef struct FeHandler {
     int read_count;
     int last_event;
     char read_buf[128];
 } FeHandler;
 
+static void main_loop(void)
+{
+    bool nonblocking;
+    int last_io = 0;
+
+    quit = false;
+    do {
+        nonblocking = last_io > 0;
+        last_io = main_loop_wait(nonblocking);
+    } while (!quit);
+}
+
 static int fe_can_read(void *opaque)
 {
     FeHandler *h = opaque;
@@ -28,6 +45,7 @@ static void fe_read(void *opaque, const uint8_t *buf, int size)
 
     memcpy(h->read_buf + h->read_count, buf, size);
     h->read_count += size;
+    quit = true;
 }
 
 static void fe_event(void *opaque, int event)
@@ -35,9 +53,36 @@ static void fe_event(void *opaque, int event)
     FeHandler *h = opaque;
 
     h->last_event = event;
+    quit = true;
 }
 
 #ifdef CONFIG_HAS_GLIB_SUBPROCESS_TESTS
+#ifdef _WIN32
+static void char_console_test_subprocess(void)
+{
+    QemuOpts *opts;
+    Chardev *chr;
+
+    opts = qemu_opts_create(qemu_find_opts("chardev"), "console-label",
+                            1, &error_abort);
+    qemu_opt_set(opts, "backend", "console", &error_abort);
+
+    chr = qemu_chr_new_from_opts(opts, NULL);
+    g_assert_nonnull(chr);
+
+    qemu_chr_write_all(chr, (const uint8_t *)"CONSOLE", 7);
+
+    qemu_opts_del(opts);
+    object_unparent(OBJECT(chr));
+}
+
+static void char_console_test(void)
+{
+    g_test_trap_subprocess("/char/console/subprocess", 0, 0);
+    g_test_trap_assert_passed();
+    g_test_trap_assert_stdout("CONSOLE");
+}
+#endif
 static void char_stdio_test_subprocess(void)
 {
     Chardev *chr;
@@ -53,7 +98,7 @@ static void char_stdio_test_subprocess(void)
     g_assert_cmpint(ret, ==, 4);
 
     qemu_chr_fe_deinit(&be);
-    qemu_chr_delete(chr);
+    object_unparent(OBJECT(chr));
 }
 
 static void char_stdio_test(void)
@@ -64,7 +109,6 @@ static void char_stdio_test(void)
 }
 #endif
 
-
 static void char_ringbuf_test(void)
 {
     QemuOpts *opts;
@@ -103,7 +147,17 @@ static void char_ringbuf_test(void)
     g_free(data);
 
     qemu_chr_fe_deinit(&be);
-    qemu_chr_delete(chr);
+    object_unparent(OBJECT(chr));
+
+    /* check alias */
+    opts = qemu_opts_create(qemu_find_opts("chardev"), "memory-label",
+                            1, &error_abort);
+    qemu_opt_set(opts, "backend", "memory", &error_abort);
+    qemu_opt_set(opts, "size", "2", &error_abort);
+    chr = qemu_chr_new_from_opts(opts, NULL);
+    g_assert_nonnull(chr);
+    object_unparent(OBJECT(chr));
+    qemu_opts_del(opts);
 }
 
 static void char_mux_test(void)
@@ -179,7 +233,296 @@ static void char_mux_test(void)
 
     qemu_chr_fe_deinit(&chr_be1);
     qemu_chr_fe_deinit(&chr_be2);
-    qemu_chr_delete(chr);
+    object_unparent(OBJECT(chr));
+}
+
+typedef struct SocketIdleData {
+    GMainLoop *loop;
+    Chardev *chr;
+    bool conn_expected;
+    CharBackend *be;
+    CharBackend *client_be;
+} SocketIdleData;
+
+static gboolean char_socket_test_idle(gpointer user_data)
+{
+    SocketIdleData *data = user_data;
+
+    if (object_property_get_bool(OBJECT(data->chr), "connected", NULL)
+        == data->conn_expected) {
+        quit = true;
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
+static void socket_read(void *opaque, const uint8_t *buf, int size)
+{
+    SocketIdleData *data = opaque;
+
+    g_assert_cmpint(size, ==, 1);
+    g_assert_cmpint(*buf, ==, 'Z');
+
+    size = qemu_chr_fe_write(data->be, (const uint8_t *)"hello", 5);
+    g_assert_cmpint(size, ==, 5);
+}
+
+static int socket_can_read(void *opaque)
+{
+    return 10;
+}
+
+static void socket_read_hello(void *opaque, const uint8_t *buf, int size)
+{
+    g_assert_cmpint(size, ==, 5);
+    g_assert(strncmp((char *)buf, "hello", 5) == 0);
+
+    quit = true;
+}
+
+static int socket_can_read_hello(void *opaque)
+{
+    return 10;
+}
+
+static void char_socket_test(void)
+{
+    Chardev *chr = qemu_chr_new("server", "tcp:127.0.0.1:0,server,nowait");
+    Chardev *chr_client;
+    QObject *addr;
+    QDict *qdict, *data;
+    const char *port;
+    SocketIdleData d = { .chr = chr };
+    CharBackend be;
+    CharBackend client_be;
+    char *tmp;
+
+    d.be = &be;
+    d.client_be = &be;
+
+    g_assert_nonnull(chr);
+    g_assert(!object_property_get_bool(OBJECT(chr), "connected", &error_abort));
+
+    addr = object_property_get_qobject(OBJECT(chr), "addr", &error_abort);
+    qdict = qobject_to_qdict(addr);
+    data = qdict_get_qdict(qdict, "data");
+    port = qdict_get_str(data, "port");
+    tmp = g_strdup_printf("tcp:127.0.0.1:%s", port);
+    QDECREF(qdict);
+
+    qemu_chr_fe_init(&be, chr, &error_abort);
+    qemu_chr_fe_set_handlers(&be, socket_can_read, socket_read,
+                             NULL, &d, NULL, true);
+
+    chr_client = qemu_chr_new("client", tmp);
+    qemu_chr_fe_init(&client_be, chr_client, &error_abort);
+    qemu_chr_fe_set_handlers(&client_be, socket_can_read_hello,
+                             socket_read_hello,
+                             NULL, &d, NULL, true);
+    g_free(tmp);
+
+    d.conn_expected = true;
+    guint id = g_idle_add(char_socket_test_idle, &d);
+    g_source_set_name_by_id(id, "test-idle");
+    g_assert_cmpint(id, >, 0);
+    main_loop();
+
+    g_assert(object_property_get_bool(OBJECT(chr), "connected", &error_abort));
+    g_assert(object_property_get_bool(OBJECT(chr_client),
+                                      "connected", &error_abort));
+
+    qemu_chr_write_all(chr_client, (const uint8_t *)"Z", 1);
+    main_loop();
+
+    object_unparent(OBJECT(chr_client));
+
+    d.conn_expected = false;
+    g_idle_add(char_socket_test_idle, &d);
+    main_loop();
+
+    object_unparent(OBJECT(chr));
+}
+
+#ifndef _WIN32
+static void char_pipe_test(void)
+{
+    gchar *tmp_path = g_dir_make_tmp("qemu-test-char.XXXXXX", NULL);
+    gchar *tmp, *in, *out, *pipe = g_build_filename(tmp_path, "pipe", NULL);
+    Chardev *chr;
+    CharBackend be;
+    int ret, fd;
+    char buf[10];
+    FeHandler fe = { 0, };
+
+    in = g_strdup_printf("%s.in", pipe);
+    if (mkfifo(in, 0600) < 0) {
+        abort();
+    }
+    out = g_strdup_printf("%s.out", pipe);
+    if (mkfifo(out, 0600) < 0) {
+        abort();
+    }
+
+    tmp = g_strdup_printf("pipe:%s", pipe);
+    chr = qemu_chr_new("pipe", tmp);
+    g_assert_nonnull(chr);
+    g_free(tmp);
+
+    qemu_chr_fe_init(&be, chr, &error_abort);
+
+    ret = qemu_chr_fe_write(&be, (void *)"pipe-out", 9);
+    g_assert_cmpint(ret, ==, 9);
+
+    fd = open(out, O_RDWR);
+    ret = read(fd, buf, sizeof(buf));
+    g_assert_cmpint(ret, ==, 9);
+    g_assert_cmpstr(buf, ==, "pipe-out");
+    close(fd);
+
+    fd = open(in, O_WRONLY);
+    ret = write(fd, "pipe-in", 8);
+    g_assert_cmpint(ret, ==, 8);
+    close(fd);
+
+    qemu_chr_fe_set_handlers(&be,
+                             fe_can_read,
+                             fe_read,
+                             fe_event,
+                             &fe,
+                             NULL, true);
+
+    main_loop();
+
+    g_assert_cmpint(fe.read_count, ==, 8);
+    g_assert_cmpstr(fe.read_buf, ==, "pipe-in");
+
+    qemu_chr_fe_deinit(&be);
+    object_unparent(OBJECT(chr));
+
+    g_assert(g_unlink(in) == 0);
+    g_assert(g_unlink(out) == 0);
+    g_assert(g_rmdir(tmp_path) == 0);
+    g_free(in);
+    g_free(out);
+    g_free(tmp_path);
+    g_free(pipe);
+}
+#endif
+
+static void char_udp_test(void)
+{
+    struct sockaddr_in addr = { 0, }, other;
+    SocketIdleData d = { 0, };
+    Chardev *chr;
+    CharBackend be;
+    socklen_t alen = sizeof(addr);
+    int ret, sock = qemu_socket(PF_INET, SOCK_DGRAM, 0);
+    char buf[10];
+    char *tmp;
+
+    g_assert_cmpint(sock, >, 0);
+    addr.sin_family = AF_INET ;
+    addr.sin_addr.s_addr = htonl(INADDR_ANY);
+    addr.sin_port = 0;
+    ret = bind(sock, (struct sockaddr *)&addr, sizeof(addr));
+    g_assert_cmpint(ret, ==, 0);
+    ret = getsockname(sock, (struct sockaddr *)&addr, &alen);
+    g_assert_cmpint(ret, ==, 0);
+
+    tmp = g_strdup_printf("udp:127.0.0.1:%d",
+                          ntohs(addr.sin_port));
+    chr = qemu_chr_new("client", tmp);
+    g_assert_nonnull(chr);
+
+    d.chr = chr;
+    qemu_chr_fe_init(&be, chr, &error_abort);
+    qemu_chr_fe_set_handlers(&be, socket_can_read_hello, socket_read_hello,
+                             NULL, &d, NULL, true);
+    ret = qemu_chr_write_all(chr, (uint8_t *)"hello", 5);
+    g_assert_cmpint(ret, ==, 5);
+
+    alen = sizeof(addr);
+    ret = recvfrom(sock, buf, sizeof(buf), 0,
+                   (struct sockaddr *)&other, &alen);
+    g_assert_cmpint(ret, ==, 5);
+    ret = sendto(sock, buf, 5, 0, (struct sockaddr *)&other, alen);
+    g_assert_cmpint(ret, ==, 5);
+
+    main_loop();
+
+    close(sock);
+    g_free(tmp);
+}
+
+static void char_file_test(void)
+{
+    char *tmp_path = g_dir_make_tmp("qemu-test-char.XXXXXX", NULL);
+    char *out = g_build_filename(tmp_path, "out", NULL);
+    char *contents = NULL;
+    ChardevFile file = { .out = out };
+    ChardevBackend backend = { .type = CHARDEV_BACKEND_KIND_FILE,
+                               .u.file.data = &file };
+    Chardev *chr;
+    gsize length;
+    int ret;
+
+    chr = qemu_chardev_new(NULL, TYPE_CHARDEV_FILE, &backend,
+                           &error_abort);
+    ret = qemu_chr_write_all(chr, (uint8_t *)"hello!", 6);
+    g_assert_cmpint(ret, ==, 6);
+    object_unref(OBJECT(chr));
+
+    ret = g_file_get_contents(out, &contents, &length, NULL);
+    g_assert(ret == TRUE);
+    g_assert_cmpint(length, ==, 6);
+    g_assert(strncmp(contents, "hello!", 6) == 0);
+    g_free(contents);
+
+#ifndef _WIN32
+    {
+        CharBackend be;
+        FeHandler fe = { 0, };
+        char *fifo = g_build_filename(tmp_path, "fifo", NULL);
+        int fd;
+
+        if (mkfifo(fifo, 0600) < 0) {
+            abort();
+        }
+
+        fd = open(fifo, O_RDWR);
+        ret = write(fd, "fifo-in", 8);
+        g_assert_cmpint(ret, ==, 8);
+
+        file.in = fifo;
+        file.has_in = true;
+        chr = qemu_chardev_new(NULL, TYPE_CHARDEV_FILE, &backend,
+                               &error_abort);
+
+        qemu_chr_fe_init(&be, chr, &error_abort);
+        qemu_chr_fe_set_handlers(&be,
+                                 fe_can_read,
+                                 fe_read,
+                                 fe_event,
+                                 &fe, NULL, true);
+
+        main_loop();
+
+        close(fd);
+
+        g_assert_cmpint(fe.read_count, ==, 8);
+        g_assert_cmpstr(fe.read_buf, ==, "fifo-in");
+        qemu_chr_fe_deinit(&be);
+        object_unref(OBJECT(chr));
+        g_unlink(fifo);
+        g_free(fifo);
+    }
+#endif
+
+    g_unlink(out);
+    g_rmdir(tmp_path);
+    g_free(tmp_path);
+    g_free(out);
 }
 
 static void char_null_test(void)
@@ -222,7 +565,7 @@ static void char_null_test(void)
     g_assert_cmpint(ret, ==, 4);
 
     qemu_chr_fe_deinit(&be);
-    qemu_chr_delete(chr);
+    object_unparent(OBJECT(chr));
 }
 
 static void char_invalid_test(void)
@@ -235,6 +578,9 @@ static void char_invalid_test(void)
 
 int main(int argc, char **argv)
 {
+    qemu_init_main_loop(&error_abort);
+    socket_init();
+
     g_test_init(&argc, &argv, NULL);
 
     module_call_init(MODULE_INIT_QOM);
@@ -245,9 +591,19 @@ int main(int argc, char **argv)
     g_test_add_func("/char/ringbuf", char_ringbuf_test);
     g_test_add_func("/char/mux", char_mux_test);
 #ifdef CONFIG_HAS_GLIB_SUBPROCESS_TESTS
+#ifdef _WIN32
+    g_test_add_func("/char/console/subprocess", char_console_test_subprocess);
+    g_test_add_func("/char/console", char_console_test);
+#endif
     g_test_add_func("/char/stdio/subprocess", char_stdio_test_subprocess);
     g_test_add_func("/char/stdio", char_stdio_test);
 #endif
+#ifndef _WIN32
+    g_test_add_func("/char/pipe", char_pipe_test);
+#endif
+    g_test_add_func("/char/file", char_file_test);
+    g_test_add_func("/char/socket", char_socket_test);
+    g_test_add_func("/char/udp", char_udp_test);
 
     return g_test_run();
 }
diff --git a/tests/vhost-user-test.c b/tests/vhost-user-test.c
index a61896c32d..9095af267e 100644
--- a/tests/vhost-user-test.c
+++ b/tests/vhost-user-test.c
@@ -491,7 +491,7 @@ static gboolean _test_server_free(TestServer *server)
     Chardev *chr = qemu_chr_fe_get_driver(&server->chr);
 
     qemu_chr_fe_deinit(&server->chr);
-    qemu_chr_delete(chr);
+    object_unparent(OBJECT(chr));
 
     for (i = 0; i < server->fds_num; i++) {
         close(server->fds[i]);