On 29.09.19 18:39, Maxim Levitsky wrote: > On Fri, 2019-09-27 at 11:42 +0200, Max Reitz wrote: >> The problem with allowing the data_file option is that you want to use a >> different data file per image used in the test. Therefore, we need to >> allow patterns like -o data_file='$TEST_IMG.data_file'. >> >> Then, we need to filter it out from qemu-img map, qemu-img create, and >> remove the data file in _rm_test_img. >> >> Signed-off-by: Max Reitz <mre...@redhat.com> >> --- >> tests/qemu-iotests/common.filter | 21 +++++++++++++++++++-- >> tests/qemu-iotests/common.rc | 10 +++++++++- >> 2 files changed, 28 insertions(+), 3 deletions(-) >> >> diff --git a/tests/qemu-iotests/common.filter >> b/tests/qemu-iotests/common.filter >> index 841f7642af..a11f9a8972 100644 >> --- a/tests/qemu-iotests/common.filter >> +++ b/tests/qemu-iotests/common.filter >> @@ -115,7 +115,15 @@ _filter_actual_image_size() >> # replace driver-specific options in the "Formatting..." line >> _filter_img_create() >> { >> - $SED -e "s#$REMOTE_TEST_DIR#TEST_DIR#g" \ >> + data_file_filter=() >> + if echo "$IMGOPTS" | grep -q 'data_file='; then >> + data_file=$(echo "$IMGOPTS" | sed -e >> 's/.*\(data_file=[^,]*\).*/\1/' \ >> + -e "s#\\\$TEST_IMG#$TEST_IMG#") > Could you maybe add a comment on this regular expression, similar > to what is in the commit message? > >> + data_file_filter=(-e "s# $data_file##") > Why to use array here? A variable would work too I think.
Because I find it to be much simpler to quote correctly. >> + fi >> + >> + $SED "${data_file_filter[@]}" \ >> + -e "s#$REMOTE_TEST_DIR#TEST_DIR#g" \ >> -e "s#$IMGPROTO:$TEST_DIR#TEST_DIR#g" \ >> -e "s#$TEST_DIR#TEST_DIR#g" \ >> -e "s#$IMGFMT#IMGFMT#g" \ >> @@ -198,9 +206,18 @@ _filter_img_info() >> # human and json output >> _filter_qemu_img_map() >> { >> + data_file_filter=() >> + if echo "$IMGOPTS" | grep -q 'data_file='; then >> + data_file_pattern=$(echo "$IMGOPTS" | sed -e >> 's/.*data_file=\([^,]*\).*/\1/' \ >> + -e >> 's#\$TEST_IMG#\\(.*\\)#') >> + data_file_filter=(-e "s#$data_file_pattern#\\1#") > Seems to do the same thing, but in slightly different way. It does a very different thing, in that it creates a sed pattern. I’d first need to get comfortable with the thought of having a common function _data_file_from_imgopts and then pass a '\(.*\)' to it, which would look weird. Or maybe even a '\\(.*\\)', because I’d still have to take the sed escaping into account, even in that function’s caller, which is weird, too. > Maybe make a function to avoid duplication? > I am not 100% sure though. > >> + fi >> + >> $SED -e 's/\([0-9a-fx]* *[0-9a-fx]* *\)[0-9a-fx]* */\1/g' \ >> -e 's/"offset": [0-9]\+/"offset": OFFSET/g' \ >> - -e 's/Mapped to *//' | _filter_testdir | _filter_imgfmt >> + -e 's/Mapped to *//' \ >> + "${data_file_filter[@]}" \ >> + | _filter_testdir | _filter_imgfmt >> } >> >> _filter_nbd() >> diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc >> index f3784077de..834ece12e4 100644 >> --- a/tests/qemu-iotests/common.rc >> +++ b/tests/qemu-iotests/common.rc >> @@ -297,7 +297,8 @@ _make_test_img() >> fi >> >> if [ -n "$IMGOPTS" ]; then >> - optstr=$(_optstr_add "$optstr" "$IMGOPTS") >> + imgopts_expanded=$(echo "$IMGOPTS" | sed -e >> "s#\\\$TEST_IMG#$img_name#") >> + optstr=$(_optstr_add "$optstr" "$imgopts_expanded") > Also a comment explaining why this is needed would be welcome. > >> fi >> if [ -n "$IMGKEYSECRET" ]; then >> object_options="--object secret,id=keysec0,data=$IMGKEYSECRET" >> @@ -376,6 +377,13 @@ _rm_test_img() >> # Remove all the extents for vmdk >> "$QEMU_IMG" info "$img" 2>/dev/null | grep 'filename:' | cut -f 2 >> -d: \ >> | xargs -I {} rm -f "{}" >> + elif [ "$IMGFMT" = "qcow2" ]; then >> + # Remove external data file >> + if echo "$IMGOPTS" | grep -q 'data_file='; then >> + data_file=$(echo "$IMGOPTS" | sed -e >> 's/.*data_file=\([^,]*\).*/\1/' \ >> + -e "s#\\\$TEST_IMG#$img#") > Same here, even more evidence that it would be nice to move this to a common > function. I’m not sure whether it’s more evidence because it would increase LoC. I may or may not do it. Max > Again, I am not 100% sure that this is the same regex, but it looks like that. > >> + rm -f "$data_file" >> + fi >> fi >> rm -f "$img" >> } > > > Best regards, > Maxim Levitsky >
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