[email protected]:~# dd bs=1M count=4096 if=/dev/zero of=test conv=fdatasync
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 91.4531 s, 47.0 MB/s
[email protected]:~# dd bs=1M count=4096 if=/dev/zero of=test conv=fdatasync
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 91.4531 s, 47.0 MB/s