#! /bin/bash
# FS QA Test No. 217
#
# large log size mkfs test - ensure the log size scaling works
#
#-----------------------------------------------------------------------
# Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#-----------------------------------------------------------------------
#

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

here=`pwd`
tmp=/tmp/$$
status=1	# failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

_cleanup()
{
    cd /
    rm -f $tmp.*
}

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

# real QA test starts here
_supported_fs xfs
_supported_os Linux

_require_scratch
_scratch_mkfs_xfs >/dev/null 2>&1
_scratch_mount
# 16T mkfs requires a bit over 2G free
_require_fs_space $SCRATCH_MNT 2202000

_require_loop
LOOP_DEV=$SCRATCH_MNT/test_fs
LOOP_MNT=$SCRATCH_MNT/test_fs_dir

_do_mkfs()
{
	for i in $*; do
		echo -n "fssize=${i}g "
		$MKFS_XFS_PROG -f -b size=4096 -l version=2 \
			-d name=$LOOP_DEV,size=${i}g |grep log
		mount -o loop -t xfs $LOOP_DEV $LOOP_MNT
		echo "test write" > $LOOP_MNT/test
		umount $LOOP_MNT > /dev/null 2>&1

		# punch out the previous blocks so that we keep the amount of
		# disk space the test requires down to a minimum.
		$XFS_IO_PROG -f -c "unresvsp 0 16383g" $LOOP_DEV
	done
}
# make large holey file
$XFS_IO_PROG -f -c "truncate 16383g" $LOOP_DEV

#make loopback mount dir
mkdir $LOOP_MNT

# test if large logs are supported
$MKFS_XFS_PROG -f -l size=256m -d name=$LOOP_DEV,size=10g > /dev/null 2>&1
if [ $? -ne 0 ]; then
	_notrun "large log sizes not supported by mkfs"
fi

#
# walk over "new" sizes supported by recent xfsprogs.
# Note that the last test is for 16TB-1GB as 32bit platforms only support
# device slightly smaller than 16TB.
#
_do_mkfs 512 1024 2048 4096 8192 16383

status=0
exit
