[fio.git] / examples / ftruncate.fio

# Example ftruncate engine jobs

[global]
ioengine=ftruncate
directory=/scratch
size=102404k ; 100Mb+4k
stonewall
filename=truncate
runtime=10s
time_based
direct=1
#
# bs option is stub here. Truncation is performed on the current block offset.
# blocksize value is ignored
bs=4k

# truncate the file to 4Kbytes then repeatedly grow the file back to just over
# its original size using subsequent truncates
[grow-truncate]
rw=write

# Repeatedly change a file to a random size between 0Kbytes and 100Mb
# using truncates
[rand-truncate]
rw=randwrite
norandommap
Commit	Line	Data
761cd093 SW	1	# Example ftruncate engine jobs
	2
	3	[global]
	4	ioengine=ftruncate
	5	directory=/scratch
	6	size=102404k ; 100Mb+4k
	7	stonewall
	8	filename=truncate
	9	runtime=10s
	10	time_based
	11	direct=1
	12	#
	13	# bs option is stub here. Truncation is performed on the current block offset.
	14	# blocksize value is ignored
	15	bs=4k
	16
	17	# truncate the file to 4Kbytes then repeatedly grow the file back to just over
	18	# its original size using subsequent truncates
	19	[grow-truncate]
	20	rw=write
	21
	22	# Repeatedly change a file to a random size between 0Kbytes and 100Mb
	23	# using truncates
	24	[rand-truncate]
	25	rw=randwrite
	26	norandommap
	27