#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
#
# FS 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.
#
# Note that this test will intentionally cause console msgs of form:
#     dksc0d1s4: Process [fsstress] ran out of disk space
#     dksc0d1s4: Process [fsstress] ran out of disk space
#     dksc0d1s4: Process [fsstress] ran out of disk space
#
. ./common/preamble
_begin_fstest rw auto enospc stress

# Override the default cleanup function.
_cleanup()
{
	echo "*** unmount"
	_scratch_unmount 2>/dev/null
	rm -f $tmp.*
}

# Import common functions.
. ./common/filter

# real QA test starts here
_supported_fs generic

_require_scratch
_require_no_large_scratch_dev

workout()
{
	fsz=$1
	ags=$2
	procs=$3
	nops=$4

	_scratch_unmount >/dev/null 2>&1
	echo "*** mkfs -dsize=$fsz,agcount=$ags"    >>$seqres.full
	echo ""                                     >>$seqres.full
	if [ $FSTYP = xfs ]
	then
		_scratch_mkfs_xfs -dsize=$fsz,agcount=$ags  >>$seqres.full 2>&1 \
			|| _fail "size=$fsz,agcount=$ags mkfs failed"
	else
		_scratch_mkfs_sized $fsz >>$seqres.full 2>&1 \
			|| _fail "size=$fsz mkfs failed"
	fi
	_scratch_mount

	# -w ensures that the only ops are ones which cause write I/O
	FSSTRESS_ARGS=`_scale_fsstress_args -d $SCRATCH_MNT -w -p $procs -n $nops $FSSTRESS_AVOID`
	$FSSTRESS_PROG $FSSTRESS_ARGS >>$seqres.full
}

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

filesize=`expr 256 \* 1024 \* 1024`
agcount=6
numprocs=15
numops=1500

workout $filesize $agcount $numprocs $numops

echo "*** done"
status=0
exit