RE: [PATCH v7 9/11] xfstests: generic/043: Test multiple fallocate insert/collapse range calls

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> > +
> > +for (( BSIZE = 1024; BSIZE <= 4096; BSIZE *= 2 )); do
> > +
> > +	length=$(($BLOCKS * $BSIZE))
> > +	case $FSTYP in
> > +	xfs)
> > +	_scratch_mkfs -b size=$BSIZE >> $seqres.full 2>&1
> > +	;;
> > +	ext4)
> > +	_scratch_mkfs -b $BSIZE >> $seqres.full 2>&1
> > +	;;
> > +	esac
> 
> I think we typically try to define things like blocksize in the test
> configuration. The MKFS_OPTIONS env. var. can be defined with the
> correct options for the associated fs being tested. That eliminates the
> need to loop and for the fs-specific _scratch_mkfs calls above.
Okay, I will change.
> 
> > +	_scratch_mount >> $seqres.full 2>&1
> > +
> > +	# Write file
> > +	$XFS_IO_PROG -f -c "pwrite 0 $length" -c fsync $testfile > /dev/null
> > +
> > +
> > +	# Insert alternate blocks
> 
> Trailing space in the above comment.
> 
> > +	for (( j=0; j < $(($BLOCKS/2)); j++ )); do
> > +		offset=$((($j*$BSIZE)*2))
> > +		$XFS_IO_PROG -c "finsert $offset $BSIZE" $testfile > /dev/null
> > +	done
> > +
> > +	# Check if 100 extents are present
> > +	$XFS_IO_PROG -c "fiemap -v" $testfile | grep "^ *[0-9]*:" |wc -l
> > +
> > +	_check_scratch_fs
> > +	if [ $? -ne 0 ]; then
> > +		status=1
> > +		exit
> > +	fi
> > +
> > +	# Collapse alternate blocks
> 
> ... and here as well.
Okay, I wil fix both points.
> 
> > +	for (( j=0; j < $(($BLOCKS/2)); j++ )); do
> > +		offset=$((($j*$BSIZE)))
> > +		$XFS_IO_PROG -c "fcollapse $offset $BSIZE" $testfile > /dev/null
> > +	done
> > +
> > +	# Check if 1 extents are present
> > +	$XFS_IO_PROG -c "fiemap -v" $testfile | grep "^ *[0-9]*:" |wc -l
> > +
> > +	_check_scratch_fs
> > +	if [ $? -ne 0 ]; then
> > +		status=1
> > +		exit
> > +	fi
> > +
> 
> Maybe create a copy of the original file before we run through the
> insert and collapse sequence and cmp the files here as a last step?
Good idea. I will add your point.

Thanks for your review!
> 
> Brian

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