From: Kevin Wolf <kwolf@redhat.com>
To: qemu-block@nongnu.org
Cc: kwolf@redhat.com, qemu-devel@nongnu.org, mreitz@redhat.com
Subject: [Qemu-devel] [PATCH v2 20/21] qemu-iotests: Test cache mode option inheritance
Date: Mon, 23 Nov 2015 16:59:59 +0100 [thread overview]
Message-ID: <1448294400-476-21-git-send-email-kwolf@redhat.com> (raw)
In-Reply-To: <1448294400-476-1-git-send-email-kwolf@redhat.com>
This is doing a more complete test on setting cache modes both while
opening an image (i.e. in a -drive command line) and in reopen
situations. It checks that reopen can specify options for child nodes
and that cache modes are correctly inherited from parent nodes where
they are not specified.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
tests/qemu-iotests/142 | 354 ++++++++++++++++++++
tests/qemu-iotests/142.out | 788 +++++++++++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/group | 1 +
3 files changed, 1143 insertions(+)
create mode 100755 tests/qemu-iotests/142
create mode 100644 tests/qemu-iotests/142.out
diff --git a/tests/qemu-iotests/142 b/tests/qemu-iotests/142
new file mode 100755
index 0000000..58daf26
--- /dev/null
+++ b/tests/qemu-iotests/142
@@ -0,0 +1,354 @@
+#!/bin/bash
+#
+# Test for configuring cache modes of arbitrary nodes (requires O_DIRECT)
+#
+# Copyright (C) 2015 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`
+tmp=/tmp/$$
+status=1 # failure is the default!
+
+_cleanup()
+{
+ _cleanup_test_img
+ rm -f $TEST_IMG.snap
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+_supported_fmt qcow2
+_supported_proto file
+_supported_os Linux
+
+# We test all cache modes anyway, but O_DIRECT needs to be supported
+_default_cache_mode none
+_supported_cache_modes none directsync
+
+function do_run_qemu()
+{
+ echo Testing: "$@"
+ (
+ if ! test -t 0; then
+ while read cmd; do
+ echo $cmd
+ done
+ fi
+ echo quit
+ ) | $QEMU -nographic -monitor stdio -nodefaults "$@"
+ echo
+}
+
+function run_qemu()
+{
+ do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu
+}
+
+size=128M
+
+TEST_IMG="$TEST_IMG.base" _make_test_img $size
+TEST_IMG="$TEST_IMG.snap" _make_test_img $size
+_make_test_img -b "$TEST_IMG.base" $size
+
+echo
+echo === Simple test for all cache modes ===
+echo
+
+run_qemu -drive file="$TEST_IMG",cache=none
+run_qemu -drive file="$TEST_IMG",cache=directsync
+run_qemu -drive file="$TEST_IMG",cache=writeback
+run_qemu -drive file="$TEST_IMG",cache=writethrough
+run_qemu -drive file="$TEST_IMG",cache=unsafe
+run_qemu -drive file="$TEST_IMG",cache=invalid_value
+
+echo
+echo === Check inheritance of cache modes ===
+echo
+
+files="if=none,file=$TEST_IMG,backing.file.filename=$TEST_IMG.base"
+ids="node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file"
+
+function check_cache_all()
+{
+ # cache.direct is supposed to be inherited by both bs->file and
+ # bs->backing_hd
+
+ echo -e "cache.direct=on on none0"
+ echo "$hmp_cmds" | run_qemu -drive "$files","$ids",cache.direct=on | grep "Cache"
+ echo -e "\ncache.direct=on on file"
+ echo "$hmp_cmds" | run_qemu -drive "$files","$ids",file.cache.direct=on | grep "Cache"
+ echo -e "\ncache.direct=on on backing"
+ echo "$hmp_cmds" | run_qemu -drive "$files","$ids",backing.cache.direct=on | grep "Cache"
+ echo -e "\ncache.direct=on on backing-file"
+ echo "$hmp_cmds" | run_qemu -drive "$files","$ids",backing.file.cache.direct=on | grep "Cache"
+
+ # cache.writeback is supposed to be inherited by bs->backing_hd; bs->file
+ # always gets cache.writeback=on
+
+ echo -e "\n\ncache.writeback=off on none0"
+ echo "$hmp_cmds" | run_qemu -drive "$files","$ids",cache.writeback=off | grep "Cache"
+ echo -e "\ncache.writeback=off on file"
+ echo "$hmp_cmds" | run_qemu -drive "$files","$ids",file.cache.writeback=off | grep "Cache"
+ echo -e "\ncache.writeback=off on backing"
+ echo "$hmp_cmds" | run_qemu -drive "$files","$ids",backing.cache.writeback=off | grep "Cache"
+ echo -e "\ncache.writeback=off on backing-file"
+ echo "$hmp_cmds" | run_qemu -drive "$files","$ids",backing.file.cache.writeback=off | grep "Cache"
+
+ # cache.no-flush is supposed to be inherited by both bs->file and bs->backing_hd
+
+ echo -e "\n\ncache.no-flush=on on none0"
+ echo "$hmp_cmds" | run_qemu -drive "$files","$ids",cache.no-flush=on | grep "Cache"
+ echo -e "\ncache.no-flush=on on file"
+ echo "$hmp_cmds" | run_qemu -drive "$files","$ids",file.cache.no-flush=on | grep "Cache"
+ echo -e "\ncache.no-flush=on on backing"
+ echo "$hmp_cmds" | run_qemu -drive "$files","$ids",backing.cache.no-flush=on | grep "Cache"
+ echo -e "\ncache.no-flush=on on backing-file"
+ echo "$hmp_cmds" | run_qemu -drive "$files","$ids",backing.file.cache.no-flush=on | grep "Cache"
+}
+
+echo
+echo "--- Configure cache modes on the command line ---"
+echo
+
+# First check the inherited cache mode after opening the image.
+
+hmp_cmds="info block image
+info block file
+info block backing
+info block backing-file"
+
+check_cache_all
+
+echo
+echo "--- Cache modes after reopen (live snapshot) ---"
+echo
+
+# Then trigger a reopen and check that the cache modes are still the same.
+
+hmp_cmds="snapshot_blkdev -n none0 $TEST_IMG.snap $IMGFMT
+info block
+info block image
+info block file
+info block backing
+info block backing-file"
+
+check_cache_all
+
+echo
+echo "--- Change cache modes with reopen (qemu-io command, flags) ---"
+echo
+
+# This one actually changes the cache mode with the reopen. For this test, the
+# new cache mode is specified in the flags, not as an option.
+
+hmp_cmds='qemu-io none0 "reopen -c none"
+info block image
+info block file
+info block backing
+info block backing-file'
+
+check_cache_all
+
+echo
+echo "--- Change cache modes with reopen (qemu-io command, options) ---"
+echo
+
+# This one actually changes the cache mode with the reopen. For this test, the
+# new cache mode is specified as an option, not in the flags.
+
+hmp_cmds='qemu-io none0 "reopen -o cache.direct=on"
+info block image
+info block file
+info block backing
+info block backing-file'
+
+check_cache_all
+
+echo
+echo "--- Change cache modes after snapshot ---"
+echo
+
+# This checks that the original image doesn't inherit from the snapshot
+
+hmp_cmds="snapshot_blkdev -n none0 $TEST_IMG.snap $IMGFMT
+qemu-io none0 \"reopen -c none\"
+info block none0
+info block image
+info block file
+info block backing
+info block backing-file"
+
+check_cache_all
+
+echo
+echo "--- Change cache mode in parent, child has explicit option in JSON ---"
+echo
+
+# This checks that children with options explicitly set by the json:
+# pseudo-protocol don't inherit these options from their parents.
+#
+# Yes, blkdebug::json:... is criminal, but I can't see another way to have a
+# BDS initialised with the json: pseudo-protocol, but still have it inherit
+# options from its parent node.
+
+hmp_cmds="qemu-io none0 \"reopen -o cache.writeback=off,cache.direct=on,cache.no-flush=on\"
+info block image
+info block blkdebug
+info block file"
+
+echo "$hmp_cmds" | run_qemu -drive if=none,file="blkdebug::json:{\"filename\":\"$TEST_IMG\",,\"cache\":{\"writeback\":false,,\"direct\":false}}",node-name=image,file.node-name=blkdebug,file.image.node-name=file #| grep "Cache"
+
+echo
+echo "=== Check that referenced BDSes don't inherit ==="
+echo
+
+drv_bkfile="if=none,driver=file,filename=$TEST_IMG.base,node-name=backing-file"
+drv_bk="if=none,file=json:{'driver':'$IMGFMT',,'file':'backing-file',,'node-name':'backing'}"
+drv_file="if=none,driver=file,filename=$TEST_IMG,node-name=file"
+drv_img="if=none,id=blk,file=json:{'driver':'$IMGFMT',,'file':'file',,'backing':'backing',,'node-name':'image'}"
+
+function check_cache_all_separate()
+{
+ # Check cache.direct
+
+ echo -e "cache.direct=on on blk"
+ echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile" -drive "$drv_bk" -drive "$drv_file" -drive "$drv_img",cache.direct=on | grep "Cache"
+ echo -e "\ncache.direct=on on file"
+ echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile" -drive "$drv_bk" -drive "$drv_file",cache.direct=on -drive "$drv_img" | grep "Cache"
+ echo -e "\ncache.direct=on on backing"
+ echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile" -drive "$drv_bk",cache.direct=on -drive "$drv_file" -drive "$drv_img" | grep "Cache"
+ echo -e "\ncache.direct=on on backing-file"
+ echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile",cache.direct=on -drive "$drv_bk" -drive "$drv_file" -drive "$drv_img" | grep "Cache"
+
+ # Check cache.writeback
+
+ echo -e "\n\ncache.writeback=off on blk"
+ echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile" -drive "$drv_bk" -drive "$drv_file" -drive "$drv_img",cache.writeback=off | grep "Cache"
+ echo -e "\ncache.writeback=off on file"
+ echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile" -drive "$drv_bk" -drive "$drv_file",cache.writeback=off -drive "$drv_img" | grep "Cache"
+ echo -e "\ncache.writeback=off on backing"
+ echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile" -drive "$drv_bk",cache.writeback=off -drive "$drv_file" -drive "$drv_img" | grep "Cache"
+ echo -e "\ncache.writeback=off on backing-file"
+ echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile",cache.writeback=off -drive "$drv_bk" -drive "$drv_file" -drive "$drv_img" | grep "Cache"
+
+ # Check cache.no-flush
+
+ echo -e "\n\ncache.no-flush=on on blk"
+ echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile" -drive "$drv_bk" -drive "$drv_file" -drive "$drv_img",cache.no-flush=on | grep "Cache"
+ echo -e "\ncache.no-flush=on on file"
+ echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile" -drive "$drv_bk" -drive "$drv_file",cache.no-flush=on -drive "$drv_img" | grep "Cache"
+ echo -e "\ncache.no-flush=on on backing"
+ echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile" -drive "$drv_bk",cache.no-flush=on -drive "$drv_file" -drive "$drv_img" | grep "Cache"
+ echo -e "\ncache.no-flush=on on backing-file"
+ echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile",cache.no-flush=on -drive "$drv_bk" -drive "$drv_file" -drive "$drv_img" | grep "Cache"
+}
+
+echo
+echo "--- Configure cache modes on the command line ---"
+echo
+
+# First check the inherited cache mode after opening the image.
+
+hmp_cmds="info block image
+info block file
+info block backing
+info block backing-file"
+
+check_cache_all_separate
+
+echo
+echo "--- Cache modes after reopen (live snapshot) ---"
+echo
+
+# Then trigger a reopen and check that the cache modes are still the same.
+
+hmp_cmds="snapshot_blkdev -n blk $TEST_IMG.snap $IMGFMT
+info block blk
+info block image
+info block file
+info block backing
+info block backing-file"
+
+check_cache_all_separate
+
+echo
+echo "--- Change cache modes with reopen (qemu-io command, flags) ---"
+echo
+
+# This one actually changes the cache mode with the reopen. For this test, the
+# new cache mode is specified as flags, not as option.
+
+hmp_cmds='qemu-io blk "reopen -c none"
+info block image
+info block file
+info block backing
+info block backing-file'
+
+check_cache_all_separate
+
+
+echo
+echo "=== Reopening children instead of the root ==="
+echo
+
+files="if=none,file=$TEST_IMG,backing.file.filename=$TEST_IMG.base"
+ids="node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file"
+
+echo
+echo "--- Basic reopen ---"
+echo
+
+hmp_cmds='qemu-io none0 "reopen -o backing.cache.direct=on"
+info block image
+info block file
+info block backing
+info block backing-file'
+
+check_cache_all
+
+echo
+echo "--- Change cache mode after reopening child ---"
+echo
+
+# This checks that children with options explicitly set with reopen don't
+# inherit these options from their parents any more
+
+# TODO Implement node-name support for 'qemu-io' HMP command for -c
+# Can use only -o to access child node options for now
+
+hmp_cmds="qemu-io none0 \"reopen -o file.cache.writeback=off,file.cache.direct=off,file.cache.no-flush=off\"
+qemu-io none0 \"reopen -o backing.file.cache.writeback=on,backing.file.cache.direct=off,backing.file.cache.no-flush=on\"
+qemu-io none0 \"reopen -c none\"
+info block image
+info block file
+info block backing
+info block backing-file"
+
+echo "$hmp_cmds" | run_qemu -drive "$files","$ids" | grep "Cache"
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0
diff --git a/tests/qemu-iotests/142.out b/tests/qemu-iotests/142.out
new file mode 100644
index 0000000..c141fb8
--- /dev/null
+++ b/tests/qemu-iotests/142.out
@@ -0,0 +1,788 @@
+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^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[K
+
+Testing: -drive file=TEST_DIR/t.qcow2,cache=directsync
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) q^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[K
+
+Testing: -drive file=TEST_DIR/t.qcow2,cache=writeback
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) q^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[K
+
+Testing: -drive file=TEST_DIR/t.qcow2,cache=writethrough
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) q^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[K
+
+Testing: -drive file=TEST_DIR/t.qcow2,cache=unsafe
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) q^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[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.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, direct
+
+cache.direct=on on backing-file
+ 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: writethrough
+ Cache mode: writeback
+
+cache.writeback=off on file
+ Cache mode: writeback
+ Cache mode: writethrough
+ Cache mode: writeback
+ Cache mode: writeback
+
+cache.writeback=off on backing
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writethrough
+ Cache mode: writeback
+
+cache.writeback=off on backing-file
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writethrough
+
+
+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.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, ignore flushes
+
+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 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: writethrough
+ Cache mode: writeback
+ Cache mode: writethrough
+ Cache mode: writeback
+
+cache.writeback=off on file
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writethrough
+ Cache mode: writeback
+ Cache mode: writeback
+
+cache.writeback=off on backing
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writethrough
+ Cache mode: writeback
+
+cache.writeback=off on backing-file
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writethrough
+
+
+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.direct=on on file
+ 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.direct=on on backing-file
+ 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.writeback=off on file
+ Cache mode: writeback, direct
+ Cache mode: writethrough, direct
+ Cache mode: writeback, direct
+ Cache mode: writeback, direct
+
+cache.writeback=off on backing
+ Cache mode: writeback, direct
+ Cache mode: writeback, direct
+ Cache mode: writethrough, direct
+ Cache mode: writeback, direct
+
+cache.writeback=off on backing-file
+ Cache mode: writeback, direct
+ Cache mode: writeback, direct
+ Cache mode: writeback, direct
+ Cache mode: writethrough, direct
+
+
+cache.no-flush=on on none0
+ 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, 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, 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, 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.direct=on on file
+ 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.direct=on on backing-file
+ 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: writethrough, direct
+ Cache mode: writeback, direct
+
+cache.writeback=off on file
+ Cache mode: writeback, direct
+ Cache mode: writethrough, direct
+ Cache mode: writeback, direct
+ Cache mode: writeback, direct
+
+cache.writeback=off on backing
+ Cache mode: writeback, direct
+ Cache mode: writeback, direct
+ Cache mode: writethrough, direct
+ Cache mode: writeback, direct
+
+cache.writeback=off on backing-file
+ Cache mode: writeback, direct
+ Cache mode: writeback, direct
+ Cache mode: writeback, direct
+ Cache mode: writethrough, direct
+
+
+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.no-flush=on on file
+ 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, 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, 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: writethrough
+ Cache mode: writeback
+ Cache mode: writethrough
+ Cache mode: writeback
+
+cache.writeback=off on file
+ Cache mode: writeback, direct
+ Cache mode: writeback
+ Cache mode: writethrough
+ Cache mode: writeback
+ Cache mode: writeback
+
+cache.writeback=off on backing
+ Cache mode: writeback, direct
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writethrough
+ Cache mode: writeback
+
+cache.writeback=off on backing-file
+ Cache mode: writeback, direct
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writethrough
+
+
+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 ---
+
+Testing: -drive if=none,file=blkdebug::json:{"filename":"TEST_DIR/t.qcow2",,"cache":{"writeback":false,,"direct":false}},node-name=image,file.node-name=blkdebug,file.image.node-name=file
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) q^[[K^[[Dqe^[[K^[[D^[[Dqem^[[K^[[D^[[D^[[Dqemu^[[K^[[D^[[D^[[D^[[Dqemu-^[[K^[[D^[[D^[[D^[[D^[[Dqemu-i^[[K^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io ^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io n^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io no^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io non^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 ^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "r^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "re^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reo^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reop^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reope^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D!
^[[D^[[Dqemu-io none0 "reopen ^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o ^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o c^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o ca^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cac^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cach^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reop!
en -o cache.^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.w^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.wr^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.wri^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writ^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.write^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeb^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeba^[[K^[[
D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[!
[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writebac^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=o^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=of^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[!
D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,c^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,ca^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cac^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cach^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[
D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cac!
he.writeback=off,cache^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.d^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.di^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.dir^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D!
^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.dire^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direc^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=o
ff,cache.direct=o^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D!
^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,c^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,ca^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[!
[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,cac^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,cach^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,cache^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,cach
e.^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D!
^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,cache.n^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,cache.no^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,cache.no-^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io!
none0 "reopen -o cache.writeback=off,cache.direct=on,cache.no-f^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,cache.no-fl^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,cache.no-flu^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,cache.no-flus^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D
^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[!
D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,cache.no-flush^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,cache.no-flush=^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,cache.no-flush=o^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D!
^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,cache.no-flush=on^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dqemu-io none0 "reopen -o cache.writeback=off,cache.direct=on,cache.no-flush=on"^[[K
+(qemu) i^[[K^[[Din^[[K^[[D^[[Dinf^[[K^[[D^[[D^[[Dinfo^[[K^[[D^[[D^[[D^[[Dinfo ^[[K^[[D^[[D^[[D^[[D^[[Dinfo b^[[K^[[D^[[D^[[D^[[D^[[D^[[Dinfo bl^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo blo^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo bloc^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block ^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block i^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block im^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block ima^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block imag^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block image^[[K
+
+image: blkdebug::TEST_DIR/t.qcow2 (qcow2)
+ Cache mode: writethrough, direct, ignore flushes
+ Backing file: TEST_DIR/t.qcow2.base (chain depth: 1)
+(qemu) i^[[K^[[Din^[[K^[[D^[[Dinf^[[K^[[D^[[D^[[Dinfo^[[K^[[D^[[D^[[D^[[Dinfo ^[[K^[[D^[[D^[[D^[[D^[[Dinfo b^[[K^[[D^[[D^[[D^[[D^[[D^[[Dinfo bl^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo blo^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo bloc^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block ^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block b^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block bl^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block blk^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block blkd^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block blkde^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block blkdeb^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block blkdebu^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block blkdebug^[[K
+
+blkdebug: blkdebug::TEST_DIR/t.qcow2 (blkdebug)
+ Cache mode: writeback, direct, ignore flushes
+(qemu) i^[[K^[[Din^[[K^[[D^[[Dinf^[[K^[[D^[[D^[[Dinfo^[[K^[[D^[[D^[[D^[[Dinfo ^[[K^[[D^[[D^[[D^[[D^[[Dinfo b^[[K^[[D^[[D^[[D^[[D^[[D^[[Dinfo bl^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo blo^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo bloc^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block ^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block f^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block fi^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block fil^[[K^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[D^[[Dinfo block file^[[K
+
+file: TEST_DIR/t.qcow2 (file)
+ Cache mode: writethrough, ignore flushes
+(qemu) q^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[K
+
+
+=== 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: writethrough
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writeback
+
+cache.writeback=off on file
+ Cache mode: writeback
+ Cache mode: writethrough
+ Cache mode: writeback
+ Cache mode: writeback
+
+cache.writeback=off on backing
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writethrough
+ Cache mode: writeback
+
+cache.writeback=off on backing-file
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writethrough
+
+
+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: writethrough
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writeback
+
+cache.writeback=off on file
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writethrough
+ Cache mode: writeback
+ Cache mode: writeback
+
+cache.writeback=off on backing
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writethrough
+ Cache mode: writeback
+
+cache.writeback=off on backing-file
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writethrough
+
+
+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: writethrough
+ Cache mode: writeback
+ Cache mode: writeback
+
+cache.writeback=off on backing
+ Cache mode: writeback, direct
+ Cache mode: writeback
+ Cache mode: writethrough
+ Cache mode: writeback
+
+cache.writeback=off on backing-file
+ Cache mode: writeback, direct
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writethrough
+
+
+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.direct=on on file
+ 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, direct
+ Cache mode: writeback, direct
+
+cache.direct=on on backing-file
+ 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: writethrough, direct
+ Cache mode: writeback, direct
+
+cache.writeback=off on file
+ Cache mode: writeback
+ Cache mode: writethrough
+ Cache mode: writeback, direct
+ Cache mode: writeback, direct
+
+cache.writeback=off on backing
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writethrough, direct
+ Cache mode: writeback, direct
+
+cache.writeback=off on backing-file
+ Cache mode: writeback
+ Cache mode: writeback
+ Cache mode: writeback, direct
+ Cache mode: writethrough, direct
+
+
+cache.no-flush=on on none0
+ 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, 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, 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, direct
+ Cache mode: writeback, direct, ignore flushes
+
+--- Change cache mode after reopening child ---
+
+ Cache mode: writeback, direct
+ Cache mode: writethrough
+ Cache mode: writeback, direct
+ Cache mode: writeback, ignore flushes
+*** done
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 5a08808..ed6ce09 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -140,3 +140,4 @@
137 rw auto
138 rw auto quick
139 rw auto quick
+142 auto
--
1.8.3.1
next prev parent reply other threads:[~2015-11-23 16:00 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-23 15:59 [Qemu-devel] [PATCH v2 00/21] block: Cache mode for children etc Kevin Wolf
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 01/21] qcow2: Add .bdrv_join_options callback Kevin Wolf
2015-11-27 16:51 ` Max Reitz
2015-11-30 14:05 ` [Qemu-devel] [Qemu-block] " Alberto Garcia
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 02/21] block: Fix reopen with semantically overlapping options Kevin Wolf
2015-11-27 16:56 ` Max Reitz
2015-11-30 14:08 ` [Qemu-devel] [Qemu-block] " Alberto Garcia
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 03/21] mirror: Error out when a BDS would get two BBs Kevin Wolf
2015-11-27 17:06 ` Max Reitz
2015-11-30 14:51 ` [Qemu-devel] [Qemu-block] " Alberto Garcia
2015-12-04 13:18 ` Kevin Wolf
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 04/21] block: Allow references for backing files Kevin Wolf
2015-11-27 17:28 ` Max Reitz
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 05/21] block: Consider all block layer options in append_open_options Kevin Wolf
2015-11-30 15:59 ` [Qemu-devel] [Qemu-block] " Alberto Garcia
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 06/21] block: Exclude nested options only for children in append_open_options() Kevin Wolf
2015-11-24 1:03 ` Wen Congyang
2015-11-27 17:58 ` Max Reitz
2015-11-27 18:02 ` Max Reitz
2015-11-30 9:01 ` Kevin Wolf
2015-11-30 16:13 ` Max Reitz
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 07/21] block: Pass driver-specific options to .bdrv_refresh_filename() Kevin Wolf
2015-12-02 14:06 ` [Qemu-devel] [Qemu-block] " Alberto Garcia
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 08/21] block: Keep "driver" in bs->options Kevin Wolf
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 09/21] block: Allow specifying child options in reopen Kevin Wolf
2015-12-02 14:22 ` [Qemu-devel] [Qemu-block] " Alberto Garcia
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 10/21] block: reopen: Document option precedence and refactor accordingly Kevin Wolf
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 11/21] block: Add infrastructure for option inheritance Kevin Wolf
2015-11-27 18:09 ` Max Reitz
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 12/21] block: Split out parse_json_protocol() Kevin Wolf
2015-11-27 18:22 ` Max Reitz
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 13/21] block: Introduce bs->explicit_options Kevin Wolf
2015-11-27 18:38 ` Max Reitz
2016-01-08 9:18 ` Paolo Bonzini
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 14/21] blockdev: Set 'format' indicates non-empty drive Kevin Wolf
2015-11-24 9:37 ` Wen Congyang
2015-11-27 19:08 ` Max Reitz
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 15/21] qemu-iotests: Remove cache mode test without medium Kevin Wolf
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 16/21] block: reopen: Extract QemuOpts for generic block layer options Kevin Wolf
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 17/21] block: Move cache options into options QDict Kevin Wolf
2015-11-27 19:57 ` Max Reitz
2015-11-30 9:37 ` Kevin Wolf
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 18/21] blkdebug: Enable reopen Kevin Wolf
2015-11-27 19:57 ` Max Reitz
2015-12-02 14:38 ` [Qemu-devel] [Qemu-block] " Alberto Garcia
2015-11-23 15:59 ` [Qemu-devel] [PATCH v2 19/21] qemu-iotests: Try setting cache mode for children Kevin Wolf
2015-11-23 15:59 ` Kevin Wolf [this message]
2015-11-27 21:12 ` [Qemu-devel] [PATCH v2 20/21] qemu-iotests: Test cache mode option inheritance Max Reitz
2015-11-30 10:32 ` Kevin Wolf
2015-11-23 16:00 ` [Qemu-devel] [PATCH v2 21/21] qemu-iotests: Test reopen with node-name/driver options Kevin Wolf
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