These changes are the raw update to qemu-2.6.

[kvmfornfv.git] / qemu / tests / qemu-iotests / 142.out

diff --git a/qemu/tests/qemu-iotests/142.out b/qemu/tests/qemu-iotests/142.out
new file mode 100644 (file)
index 0000000..600beca
--- /dev/null
+++ b/qemu/tests/qemu-iotests/142.out
@@ -0,0 +1,750 @@
+QA output created by 142
+Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728
+Formatting 'TEST_DIR/t.IMGFMT.snap', fmt=IMGFMT size=134217728
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base
+
+=== Simple test for all cache modes ===
+
+Testing: -drive file=TEST_DIR/t.qcow2,cache=none
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) q\e[K\e[Dqu\e[K\e[D\e[Dqui\e[K\e[D\e[D\e[Dquit\e[K
+
+Testing: -drive file=TEST_DIR/t.qcow2,cache=directsync
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) q\e[K\e[Dqu\e[K\e[D\e[Dqui\e[K\e[D\e[D\e[Dquit\e[K
+
+Testing: -drive file=TEST_DIR/t.qcow2,cache=writeback
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) q\e[K\e[Dqu\e[K\e[D\e[Dqui\e[K\e[D\e[D\e[Dquit\e[K
+
+Testing: -drive file=TEST_DIR/t.qcow2,cache=writethrough
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) q\e[K\e[Dqu\e[K\e[D\e[Dqui\e[K\e[D\e[D\e[Dquit\e[K
+
+Testing: -drive file=TEST_DIR/t.qcow2,cache=unsafe
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) q\e[K\e[Dqu\e[K\e[D\e[Dqui\e[K\e[D\e[D\e[Dquit\e[K
+
+Testing: -drive file=TEST_DIR/t.qcow2,cache=invalid_value
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,cache=invalid_value: invalid cache option
+
+
+=== Check inheritance of cache modes ===
+
+
+--- Configure cache modes on the command line ---
+
+cache.direct=on on none0
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.direct=on on file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.direct=on on backing
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.direct=on on backing-file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+
+
+cache.writeback=off on none0
+    Cache mode:       writethrough
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.writeback=off on file
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Block protocol 'file' doesn't support the option 'cache.writeback'
+
+cache.writeback=off on backing
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Block format 'qcow2' does not support the option 'cache.writeback'
+
+cache.writeback=off on backing-file
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Block protocol 'file' doesn't support the option 'cache.writeback'
+
+
+cache.no-flush=on on none0
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+
+cache.no-flush=on on file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.no-flush=on on backing
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+
+cache.no-flush=on on backing-file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+
+--- Cache modes after reopen (live snapshot) ---
+
+cache.direct=on on none0
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.direct=on on file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.direct=on on backing
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.direct=on on backing-file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+
+
+cache.writeback=off on none0
+    Cache mode:       writethrough
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.writeback=off on file
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Block protocol 'file' doesn't support the option 'cache.writeback'
+
+cache.writeback=off on backing
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Block format 'qcow2' does not support the option 'cache.writeback'
+
+cache.writeback=off on backing-file
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Block protocol 'file' doesn't support the option 'cache.writeback'
+
+
+cache.no-flush=on on none0
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+
+cache.no-flush=on on file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.no-flush=on on backing
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+
+cache.no-flush=on on backing-file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+
+--- Change cache modes with reopen (qemu-io command, flags) ---
+
+cache.direct=on on none0
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.direct=on on file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.direct=on on backing
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.direct=on on backing-file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+
+cache.writeback=off on none0
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.writeback=off on file
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Block protocol 'file' doesn't support the option 'cache.writeback'
+
+cache.writeback=off on backing
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Block format 'qcow2' does not support the option 'cache.writeback'
+
+cache.writeback=off on backing-file
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Block protocol 'file' doesn't support the option 'cache.writeback'
+
+
+cache.no-flush=on on none0
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.no-flush=on on file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct, ignore flushes
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.no-flush=on on backing
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct, ignore flushes
+    Cache mode:       writeback, direct, ignore flushes
+
+cache.no-flush=on on backing-file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct, ignore flushes
+
+--- Change cache modes with reopen (qemu-io command, options) ---
+
+cache.direct=on on none0
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.direct=on on file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.direct=on on backing
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.direct=on on backing-file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+
+cache.writeback=off on none0
+    Cache mode:       writethrough, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.writeback=off on file
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Block protocol 'file' doesn't support the option 'cache.writeback'
+
+cache.writeback=off on backing
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Block format 'qcow2' does not support the option 'cache.writeback'
+
+cache.writeback=off on backing-file
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Block protocol 'file' doesn't support the option 'cache.writeback'
+
+
+cache.no-flush=on on none0
+    Cache mode:       writeback, direct, ignore flushes
+    Cache mode:       writeback, direct, ignore flushes
+    Cache mode:       writeback, direct, ignore flushes
+    Cache mode:       writeback, direct, ignore flushes
+    Cache mode:       writeback, direct, ignore flushes
+
+cache.no-flush=on on file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct, ignore flushes
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.no-flush=on on backing
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct, ignore flushes
+    Cache mode:       writeback, direct, ignore flushes
+
+cache.no-flush=on on backing-file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct, ignore flushes
+
+--- Change cache modes after snapshot ---
+
+cache.direct=on on none0
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.direct=on on file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.direct=on on backing
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.direct=on on backing-file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+
+
+cache.writeback=off on none0
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.writeback=off on file
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Block protocol 'file' doesn't support the option 'cache.writeback'
+
+cache.writeback=off on backing
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Block format 'qcow2' does not support the option 'cache.writeback'
+
+cache.writeback=off on backing-file
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Block protocol 'file' doesn't support the option 'cache.writeback'
+
+
+cache.no-flush=on on none0
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+
+cache.no-flush=on on file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.no-flush=on on backing
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+
+cache.no-flush=on on backing-file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+
+--- Change cache mode in parent, child has explicit option in JSON ---
+
+    Cache mode:       writeback, direct, ignore flushes
+    Cache mode:       writeback, direct, ignore flushes
+    Cache mode:       writeback, direct, ignore flushes
+    Cache mode:       writeback, ignore flushes
+
+=== Check that referenced BDSes don't inherit ===
+
+
+--- Configure cache modes on the command line ---
+
+cache.direct=on on blk
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.direct=on on file
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.direct=on on backing
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+
+cache.direct=on on backing-file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+
+
+cache.writeback=off on blk
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.writeback=off on file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.writeback=off on backing
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.writeback=off on backing-file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+
+cache.no-flush=on on blk
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.no-flush=on on file
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.no-flush=on on backing
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback
+
+cache.no-flush=on on backing-file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+
+--- Cache modes after reopen (live snapshot) ---
+
+cache.direct=on on blk
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.direct=on on file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.direct=on on backing
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+
+cache.direct=on on backing-file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+
+
+cache.writeback=off on blk
+    Cache mode:       writethrough
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.writeback=off on file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.writeback=off on backing
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.writeback=off on backing-file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+
+cache.no-flush=on on blk
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.no-flush=on on file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.no-flush=on on backing
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback
+
+cache.no-flush=on on backing-file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+
+--- Change cache modes with reopen (qemu-io command, flags) ---
+
+cache.direct=on on blk
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.direct=on on file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.direct=on on backing
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+
+cache.direct=on on backing-file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+
+
+cache.writeback=off on blk
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.writeback=off on file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.writeback=off on backing
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.writeback=off on backing-file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+
+cache.no-flush=on on blk
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.no-flush=on on file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback
+    Cache mode:       writeback
+
+cache.no-flush=on on backing
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback
+
+cache.no-flush=on on backing-file
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+
+=== Reopening children instead of the root ===
+
+
+--- Basic reopen ---
+
+cache.direct=on on none0
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.direct=on on file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.direct=on on backing
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.direct=on on backing-file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+
+cache.writeback=off on none0
+    Cache mode:       writethrough
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.writeback=off on file
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Block protocol 'file' doesn't support the option 'cache.writeback'
+
+cache.writeback=off on backing
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Block format 'qcow2' does not support the option 'cache.writeback'
+
+cache.writeback=off on backing-file
+QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Block protocol 'file' doesn't support the option 'cache.writeback'
+
+
+cache.no-flush=on on none0
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, direct, ignore flushes
+    Cache mode:       writeback, direct, ignore flushes
+
+cache.no-flush=on on file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, ignore flushes
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct
+
+cache.no-flush=on on backing
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct, ignore flushes
+    Cache mode:       writeback, direct, ignore flushes
+
+cache.no-flush=on on backing-file
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, direct, ignore flushes
+
+--- Change cache mode after reopening child ---
+
+    Cache mode:       writeback, direct
+    Cache mode:       writeback
+    Cache mode:       writeback, direct
+    Cache mode:       writeback, ignore flushes
+*** done