Re: [PATCH v3] xfstests: btrfs/316: cross-subvolume sparse copy

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Dave,

Thanks for the review. I will clean up the commit message and do a full mail-to-myself-and-test-patch round trip to avoid errors like the wrong test numbers in the golden output. I'm sorry for this.

About cutting out file names from the output. I did this in the first version of the patch:

       md5sum $TESTDIR1/$F | $AWK_PROG 'END {print $1}'

but Eric Sandeen suggested to include them in order to provide more context in the output. (See http://oss.sgi.com/archives/xfs/2013-03/msg00231.html and http://oss.sgi.com/archives/xfs/2013-03/msg00220.html) That sounds like a good idea to me, it makes debugging failures easier. Whose opinion should I follow?

Koen.


On 07/02/2013 12:15 PM, Dave Chinner wrote:

> On Tue, Jul 02, 2013 at 11:27:51AM +0200, Koen De Wit wrote:
>> This testscript creates reflinks to files on different subvolumes, overwrites the original files and reflinks, and moves reflinked files between subvolumes.
>>
>> Originally submitted as testcase 302, changes are made based on comments from Eric: http://oss.sgi.com/archives/xfs/2013-03/msg00231.html
>> Two new common/rc functions used in this script (_require_cp_reflink and _verify_reflink) have been submitted recently: http://oss.sgi.com/archives/xfs/2013-05/msg00745.html
>> Thanks to Eric Sandeen and Dave Chinner for the reviews.
>>
>> Version 3: fixing wrapped patch.
> 
> Needs a proper commit message - wrap it at 72 columns,  change log
> should be placed below the --- devider, not be part of hte commit
> message.
> 
> Test numbers do not need to be unique across all test directories,
> just unique within the tests/btrfs directory.
> 
>> +
>> +_checksum_files() {
>> +    for F in file1 file2 file3
>> +    do
>> +        for D in $TESTDIR1 $SCRATCH_MNT $SUBVOL2
>> +        do
>> +            md5sum $D/$F | _filter_test_dir | _filter_scratch
> 
> Just cut the file name out. No need for filtering at that point...
> 
>> +        done
>> +    done
>> +}
>> +
>> +TESTDIR1=$TEST_DIR/test-$seq-1
>> +TESTDIR2=$TEST_DIR/test-$seq-2
>> +SUBVOL1=$TEST_DIR/subvol-$seq-1
>> +SUBVOL2=$TEST_DIR/subvol-$seq-2
> 
> ....-316-.....
> 
>> +Verify the file contents:
>> +e09c80c42fda55f9d992e59ca6b3307d  TEST_DIR/test-302-1/file1
> 
> which means the golden output is broken, despite the filtering
> 
> You should test your patches before posting ;)
> 
> FWIW, this is why you should simply cut the filename completely out
> like we do elsewhere....
> 
> Cheers,
> 
> Dave.


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