1; writes 512 byte verification blocks until the disk is full, 2; then verifies written data 3[global] 4thread=1 5bs=64k 6direct=1 7ioengine=sync 8verify=meta 9verify_pattern=0xaa555aa5 10verify_interval=512 11 12[write-phase] 13filename=datafile.tmp ; or use a full disk, for example /dev/sda 14rw=write 15fill_device=1 16do_verify=0 17 18[verify-phase] 19stonewall 20create_serialize=0 21filename=datafile.tmp 22rw=read 23do_verify=1 24