On Sat, 2 Jan 2010, Scott McEachern wrote:
# date; time dd if=/dev/rwd0c of=/dev/null; date
Thu Dec 31 23:44:32 EST 2009
dd: /dev/rwd0c: Input/output error
268435455+0 records in
268435455+0 records out
137438952960 bytes transferred in 23954.900 secs (5737404 bytes/sec)
399m14.93s real 2m12.93s user 174m4.64s system
Fri Jan 1 06:23:47 EST 2010
Out of curiosity, does the same happen if you dd from /dev/rwd0d?
As Matthew Szudzik pointed out, dd is failing when it attempts to read
(2^28)th sector of the current device you are reading from. Up to,
including, 2^28-1 everything is ok.
Regards,
David