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Re: [Qemu-devel] [PATCHv2 04/18] qemu-iotests: fix test 013 to work with
From: |
Jeff Cody |
Subject: |
Re: [Qemu-devel] [PATCHv2 04/18] qemu-iotests: fix test 013 to work with any protocol |
Date: |
Mon, 6 Jan 2014 15:40:57 -0500 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Jan 06, 2014 at 07:48:25AM +0100, Peter Lieven wrote:
> On 06.01.2014 06:31, Fam Zheng wrote:
> >On 2014年01月06日 01:21, Peter Lieven wrote:
> >>Signed-off-by: Peter Lieven <address@hidden>
> >>---
> >> tests/qemu-iotests/013 | 9 ++++-----
> >> tests/qemu-iotests/013.out | 2 +-
> >> 2 files changed, 5 insertions(+), 6 deletions(-)
> >>
> >>diff --git a/tests/qemu-iotests/013 b/tests/qemu-iotests/013
> >>index ea3cab9..0dbc934 100755
> >>--- a/tests/qemu-iotests/013
> >>+++ b/tests/qemu-iotests/013
> >>@@ -41,14 +41,14 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
> >>
> >> # much of this could be generic for any format supporting compression.
> >> _supported_fmt qcow qcow2
> >>-_supported_proto file
> >>+_supported_proto generic
> >> _supported_os Linux
> >>
> >> TEST_OFFSETS="0 4294967296"
> >> TEST_OPS="writev read write readv"
> >> CLUSTER_SIZE=4096
> >>
> >
> >I think dropping these three TEST_IMG overriding change...
> >
> >>-_make_test_img 6G
> >>+TEST_IMG=$TEST_IMG.orig _make_test_img 6G
> >
> >#1
> >
> >>
> >> echo "Testing empty image"
> >> echo
> >>@@ -56,16 +56,15 @@ echo
> >> for offset in $TEST_OFFSETS; do
> >> echo "At offset $offset:"
> >> for op in $TEST_OPS; do
> >>- io_test $op $offset $CLUSTER_SIZE 8
> >>+ TEST_IMG=$TEST_IMG.orig io_test $op $offset $CLUSTER_SIZE 8
> >
> >#2
> >
> >> done
> >>- _check_test_img
> >>+ TEST_IMG=$TEST_IMG.orig _check_test_img
> >
> >#3
> >
> >> done
> >>
> >>
> >> echo "Compressing image"
> >> echo
> >>
> >>-mv "$TEST_IMG" "$TEST_IMG.orig"
> >
> >and changing this to
> >
> >TEST_IMG=$TEST_IMG.orig _make_test_img 6G
> >
> >Should work.
> Unfortunately it doesn't. All subsequent commands will then work
> on $TEST_IMG.orig altough they shouldn't. In case of
> 013 this is io_test, _check_test_img and the cleanup at the end.
>
> There are 3 options:
> - override it in every line that should use an alternate $TEST_IMG
> - save the original $TEST_IMG and restore it.
> - rework all commands to take the file as parameter and not use
> a global variable for it.
>
> I choosed the first one because it makes clear which $TEST_IMG is acutally
> used. You see from the output and the code that you are dealing with the
> file that is later used as $TEST_IMG.orig. If you see $TEST_IMG there you
> can't distinguish if its the backing or original file or the actual image.
There more I've read through the patches, my opinion is that something
more along the lines of option #3 would be best. If that is done, it
may be nice for the file to be an optional argument to the function.
That way, for tests that only support IMGPROTO=file, the current
default operation does not need to change.
My fear is the current method (#1) seems a bit unwieldy; I
foresee scripts often forgetting to do these manual override steps.
Then again, the default IMGPROTO was set to 'file', so perhaps my fear
is unfounded.
>
> But I thought that this would be controversal. This is I why I splitted the
> patch
> into individual ones. So its possible to drop all these patches and still be
> able
> to proceed with the integration of the NFS protocol driver.
> >
> >> $QEMU_IMG convert -f $IMGFMT -O $IMGFMT -c "$TEST_IMG.orig" "$TEST_IMG"
> >>
> >> echo "Testing compressed image"
> >>diff --git a/tests/qemu-iotests/013.out b/tests/qemu-iotests/013.out
> >>index 43a414c..763cb0c 100644
> >>--- a/tests/qemu-iotests/013.out
> >>+++ b/tests/qemu-iotests/013.out
> >>@@ -1,5 +1,5 @@
> >> QA output created by 013
> >>-Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=6442450944
> >>+Formatting 'TEST_DIR/t.IMGFMT.orig', fmt=IMGFMT size=6442450944
> >
> >So this is not necessary.
> >
> >Fam
> Peter
[Qemu-devel] [PATCHv2 02/18] qemu-iotests: enable support for NFS protocol, Peter Lieven, 2014/01/05
[Qemu-devel] [PATCHv2 05/18] qemu-iotests: fix tests 014 and 023 to work with any protocol, Peter Lieven, 2014/01/05