--- write AAAA via v0 (stderr shown) ---
0+1 records in
1+0 records out
512 bytes transferred in 0.000114 secs (4479440 bytes/sec)
--- read via v0 ---
1+0 records in
1+0 records out
512 bytes transferred in 0.000211 secs (2424702 bytes/sec)
0000000    A   A   A   A   -   v   0   -   m   a   r   k   -   b   b   b
0000020    b   b   b   b   b   b   b   b   b  \0  \0  \0  \0  \0  \0  \0
0000040   \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
--- write BBBB via v256 (stderr shown) ---
dd: /dev/vinum/vol/v256: Input/output error
--- read via v0 (BBBB => aliasing) ---
1+0 records in
1+0 records out
512 bytes transferred in 0.000094 secs (5423729 bytes/sec)
0000000    A   A   A   A   -   v   0   -   m   a   r   k   -   b   b   b
0000020    b   b   b   b   b   b   b   b   b  \0  \0  \0  \0  \0  \0  \0
0000040   \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
--- read via v256 ---
dd: /dev/vinum/vol/v256: No such file or directory