#! /bin/sh
# XFS QA Test No. 083
#
# Exercise filesystem full behaviour - run numerous fsstress
# processes in write mode on a small filesystem.  NB: delayed
# allocate flushing is quite deadlock prone at the filesystem
# full boundary due to the fact that we will retry allocation
# several times after flushing, before giving back ENOSPC.
#
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# creator
owner=nathans@sgi.com

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

here=`pwd`
tmp=/tmp/$$
status=1

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

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

# real QA test starts here
_require_scratch
_require_nobigloopfs

rm -f $seq.full

workout()
{
	fsz=$1
	ags=$2
	procs=$3

	umount $SCRATCH_DEV >/dev/null 2>&1
	echo "*** mkfs -dsize=$fsz,agcount=$ags"    >>$seq.full
	echo ""                                     >>$seq.full
	_scratch_mkfs_xfs -dsize=$fsz,agcount=$ags  >>$seq.full 2>&1 \
		|| _fail "size=$fsz,agcount=$ags mkfs failed"
	_scratch_mount                              >>$seq.full 2>&1 \
		|| _fail "mount failed"

	ltp/fsstress -d $SCRATCH_MNT -w -p $procs -n 10000 $FSSTRESS_AVOID \
		>>$seq.full
	_check_scratch_fs
}

echo "*** test out-of-space handling for random write operations"

# args: filesystem size/ag count/number fsstress processes

workout 50m 3 1
workout 100m 6 2

#workout 50m 3 10
# NOTE: deadlocks exist at small AG counts and large numbers
#       of processes - TODO!

echo "*** done"
status=0
exit