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Diffstat (limited to 'qemu/tests/qemu-iotests/142')
| -rwxr-xr-x | qemu/tests/qemu-iotests/142 | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/qemu/tests/qemu-iotests/142 b/qemu/tests/qemu-iotests/142 new file mode 100755 index 000000000..29c0606bd --- /dev/null +++ b/qemu/tests/qemu-iotests/142 @@ -0,0 +1,358 @@ +#!/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` +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=$TEST_IMG.base" +ids="node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file" + +function check_cache_all() +{ + # cache.direct is supposed to be inherited by both bs->file and + # bs->backing + + echo -e "cache.direct=on on none0" + echo "$hmp_cmds" | run_qemu -drive "$files","$ids",cache.direct=on | grep -e "Cache" -e "[Cc]annot|[Cc]ould not|[Cc]an't" + echo -e "\ncache.direct=on on file" + echo "$hmp_cmds" | run_qemu -drive "$files","$ids",file.cache.direct=on | grep -e "Cache" -e "[Cc]annot|[Cc]ould not|[Cc]an't" + echo -e "\ncache.direct=on on backing" + echo "$hmp_cmds" | run_qemu -drive "$files","$ids",backing.cache.direct=on | grep -e "Cache" -e "[Cc]annot|[Cc]ould not|[Cc]an't" + echo -e "\ncache.direct=on on backing-file" + echo "$hmp_cmds" | run_qemu -drive "$files","$ids",backing.file.cache.direct=on | grep -e "Cache" -e "[Cc]annot|[Cc]ould not|[Cc]an't" + + # cache.writeback is supposed to be inherited by bs->backing; bs->file + # always gets cache.writeback=on + + echo -e "\n\ncache.writeback=off on none0" + echo "$hmp_cmds" | run_qemu -drive "$files","$ids",cache.writeback=off | grep -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" + echo -e "\ncache.writeback=off on file" + echo "$hmp_cmds" | run_qemu -drive "$files","$ids",file.cache.writeback=off | grep -e "doesn't" -e "does not" + echo -e "\ncache.writeback=off on backing" + echo "$hmp_cmds" | run_qemu -drive "$files","$ids",backing.cache.writeback=off | grep -e "doesn't" -e "does not" + echo -e "\ncache.writeback=off on backing-file" + echo "$hmp_cmds" | run_qemu -drive "$files","$ids",backing.file.cache.writeback=off | grep -e "doesn't" -e "does not" + + # cache.no-flush is supposed to be inherited by both bs->file and bs->backing + + echo -e "\n\ncache.no-flush=on on none0" + echo "$hmp_cmds" | run_qemu -drive "$files","$ids",cache.no-flush=on | grep -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" + echo -e "\ncache.no-flush=on on file" + echo "$hmp_cmds" | run_qemu -drive "$files","$ids",file.cache.no-flush=on | grep -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" + echo -e "\ncache.no-flush=on on backing" + echo "$hmp_cmds" | run_qemu -drive "$files","$ids",backing.cache.no-flush=on | grep -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" + echo -e "\ncache.no-flush=on on backing-file" + echo "$hmp_cmds" | run_qemu -drive "$files","$ids",backing.file.cache.no-flush=on | grep -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" +} + +echo +echo "--- Configure cache modes on the command line ---" +echo + +# First check the inherited cache mode after opening the image. + +hmp_cmds="info block none0 +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 none0 +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 none0 +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 $IMGFMT +qemu-io none0 \"reopen -c none\" +info block none0 +info block image +info block file +info block backing +info block backing-file" + +check_cache_all + +echo +echo "--- Change cache mode in parent, child has explicit option in JSON ---" +echo + +# This checks that children with options explicitly set by the json: +# pseudo-protocol don't inherit these options from their parents. +# +# Yes, blkdebug::json:... is criminal, but I can't see another way to have a +# BDS initialised with the json: pseudo-protocol, but still have it inherit +# options from its parent node. + +hmp_cmds="qemu-io none0 \"reopen -o cache.direct=on,cache.no-flush=on\" +info block none0 +info block image +info block blkdebug +info block file" + +echo "$hmp_cmds" | run_qemu -drive if=none,file="blkdebug::json:{\"filename\":\"$TEST_IMG\",,\"cache\":{\"direct\":false}}",node-name=image,file.node-name=blkdebug,file.image.node-name=file | grep "Cache" + +echo +echo "=== Check that referenced BDSes don't inherit ===" +echo + +drv_bkfile="if=none,driver=file,filename=$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 -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" + 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 "$drv_img" | grep -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" + echo -e "\ncache.direct=on on backing" + echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile" -drive "$drv_bk",cache.direct=on -drive "$drv_file" -drive "$drv_img" | grep -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" + 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 "$drv_img" | grep -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" + + # Check cache.writeback + + echo -e "\n\ncache.writeback=off on blk" + echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile" -drive "$drv_bk" -drive "$drv_file" -drive "$drv_img",cache.writeback=off | grep -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" + 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 "$drv_img" | grep -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" + echo -e "\ncache.writeback=off on backing" + echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile" -drive "$drv_bk",cache.writeback=off -drive "$drv_file" -drive "$drv_img" | grep -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" + 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 "$drv_img" | grep -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" + + # Check cache.no-flush + + echo -e "\n\ncache.no-flush=on on blk" + echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile" -drive "$drv_bk" -drive "$drv_file" -drive "$drv_img",cache.no-flush=on | grep -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" + 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 "$drv_img" | grep -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" + echo -e "\ncache.no-flush=on on backing" + echo "$hmp_cmds" | run_qemu -drive "$drv_bkfile" -drive "$drv_bk",cache.no-flush=on -drive "$drv_file" -drive "$drv_img" | grep -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" + 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 -e "Cache" -e "[Cc]annot\|[Cc]ould not\|[Cc]an't" +} + +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=$TEST_IMG.base" +ids="node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file" + +echo +echo "--- Basic reopen ---" +echo + +hmp_cmds='qemu-io none0 "reopen -o backing.cache.direct=on" +info block none0 +info block image +info block file +info block backing +info block backing-file' + +check_cache_all + +echo +echo "--- Change cache mode after reopening child ---" +echo + +# This checks that children with options explicitly set with reopen don't +# inherit these options from their parents any more + +# TODO Implement node-name support for 'qemu-io' HMP command for -c +# Can use only -o to access child node options for now + +hmp_cmds="qemu-io none0 \"reopen -o file.cache.direct=off,file.cache.no-flush=off\" +qemu-io none0 \"reopen -o backing.file.cache.direct=off,backing.file.cache.no-flush=on\" +qemu-io none0 \"reopen -c none\" +info block image +info block file +info block backing +info block backing-file" + +echo "$hmp_cmds" | run_qemu -drive "$files","$ids" | grep "Cache" + +# success, all done +echo "*** done" +rm -f $seq.full +status=0 |