On Mar 7, 2011, at 7:06 PM, Chris Murphy wrote: > > On Mar 7, 2011, at 6:02 PM, Markus Hitter wrote: > >> >> Am 07.03.2011 um 20:22 schrieb Chris Murphy: >> >>> I don't know the difference with XNU between block level and raw device >> >> For reading the whole thing, the result should be the same for both. A >> "cmp", "diff" or two "md5" should tell you wether I'm speaking the truth ;-) > > > I agree. Should be the same for both with respect to performance as well, but > they aren't. 6x slower for block level compared to raw.
Yes, the resulting files should be the same; no, the copy should not be the same speed! It's hard for me to believe that this confusion about block vs. character/raw devices still exists when UNIX is more than 40 years old. _______________________________________________ MacOSX-admin mailing list [email protected] http://www.omnigroup.com/mailman/listinfo/macosx-admin
