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For XFSQA test 018 081 082 095 the test specifies test wide mkfs options using MKFS_OPTIONS env var.
Further mkfs options are then appended by _mkfs_log at mkfs time with _scratch_mkfs_xfs.

Currently there are a few ways mkfs options are specified in XFSQA:
1) suite wide MKFS_OPTIONS are specified before tests are run
        e.g.
        vimes:/home/fsgqa/kali/xfsqa/xfstests # export MKFS_OPTIONS="-l size=100m"

2) test wide MKFS_OPTIONS are specified during a particular test
        e.g. 119
        export MKFS_OPTIONS="-l version=2,size=1200b,su=64k"

3) mkfs options are appended by a test at mkfs time
        e.g.  083
        _scratch_mkfs_xfs -dsize=$fsz,agcount=$ags  >>$seq.full

(4) Another form of appending is just appending to MKFS_OPTIONS directly
        e.g.    114:export MKFS_OPTIONS="$MKFS_OPTIONS -i parent=1"
                115:export MKFS_OPTIONS="$MKFS_OPTIONS -i paths=1"


e.g. Methods (2) *and* (3) for specifiying mkfs options are used in these tests.
This causes problems, because the mkfs options fallback code assumes the
_mkfs_log _scratch_mkfs_xfs appended options are the only test specified options.

This change causes tests using _mkfs_log to only use option (2).
~
~
Merge of master-melb:xfs-cmds:29031a by kenmcd.

#! /bin/sh
# FS QA Test No. 018
#
# xfs_logprint test - test v2 logs of different LR sizes
#
#-----------------------------------------------------------------------
# Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
#-----------------------------------------------------------------------
#
# creator
owner=tes@sgi.com

seq=`basename $0`
echo "QA output created by $seq"

here=`pwd`
tmp=/tmp/$$
status=1	# failure is the default!

# get standard environment, filters and checks
. ./common.rc
. ./common.filter
. ./common.log

_cleanup()
{
    cd /
    _cleanup_logfiles
    rm -f $tmp.*
    umount $SCRATCH_MNT 2>/dev/null
}
trap "_cleanup; exit \$status" 0 1 2 3 15

# real QA test starts here
_supported_fs xfs
_supported_os IRIX Linux
# prelim
rm -f $seq.full $tmp.*
_require_scratch
_require_v2log

# link correct .out file
_link_out_file $seq.op


echo "*** init FS"
umount $SCRATCH_DEV >/dev/null 2>&1

cat >$tmp.seq.params <<EOF
# mkfs-opt        mount-opt
  version=1     logbsize=32k
  version=2     logbsize=32k
  version=2     logbsize=64k
  version=2     logbsize=128k
  version=2     logbsize=256k
EOF

if [ "$HOSTOS" = "IRIX" ]; then
    start_blk=0
else
    start_blk=2
fi

# do the work for various log params which
# should not effect the data content of the log
cat $tmp.seq.params \
| while read mkfs mnt
do
    if [ "$mkfs" = "#" ]; then
	continue
    fi
    export MOUNT_OPTIONS="-o noalign,$mnt"
    _mkfs_log "-l $mkfs"
    _create_log
    _check_log

    _print_operation
    _cmp_op_output $seq.op $filtered

    _print_transaction_inode $start_blk
    _cmp_output $seq.trans_inode $filtered

    _print_transaction_buf $start_blk
    _cmp_output $seq.trans_buf $filtered
done

# got thru it all so we may have success
status=0

exit