dd

# ./dd if=/dev/zero of=/dev/drbd1596 bs=64k count=100 oflag=sync
./dd: error writing '/dev/drbd1596': Input/output error
1+0 records in
0+0 records out
0 bytes (0 B) copied, 10.0595 s, 0.0 kB/s


# ./dd if=/dev/zero of=/dev/drbd1596 bs=1M count=100 conv=noerror,sync
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 1.93472 s, 54.2 MB/s