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From: SODA Noriyuki <soda@sra.co.jp>
To: FreeBSD-users-jp@jp.FreeBSD.org
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Date: Sat, 25 Jun 2005 00:42:34 +0900
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Subject: [FreeBSD-users-jp 85522] Re: Linux
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X-Distribute: distribute version 2.1 (Alpha) patchlevel 24e+050320

$B2<@n$5$s(B wrote:
> > $B$3$A$i$N>l9g$O!$(B/dev/ad0s1 $B$O(B raw device $B$G$9$N$G!$%+!<%M%kFb$K(B
> > $B%G%#%9%/$N%-%c%C%7%e$O@8@.$5$l$^$;$s!%$J$N$G!$Hf3S$NJ}K!$H$7$F(B
> > $B%U%'%"$+$I$&$+$O8!F$$NM>CO$,$"$k$+$b$7$l$^$;$s!%(B

> $B$*$C$7$c$kDL$j(B, raw device $B$H(B block device $B$N0c$$$@$H;W$$$^$9(B.
> $B%a%b%j$N05Gw$b$=$&$G$9$,(B, DMA $B$^$+$;$G:Q$`(B raw device $B$H(B,
> buffer cache -> userland $B$N(B memory copy $B$rH<$&(B block device
> $B$G$O(B, CPU$B$NIi2Y$O$@$$$V0c$&$O$:$G$9(B.

$BF146$G$9!#(B

> $BL`$b(B, block device $B$N$_$r(B userland $B$K8+$;$F$$$k(B linux $B$H(B,
> raw device $B$N$_$r8+$;$F$$$k(B FreeBSD $B$N0c$$$H$$$&$N$O6=L#?<$$$H(B
> $B$O;W$$$^$9(B.

Linux $B$b!"$5$9$,$K:G6a$G$O(B raw device $B$,;H$($k$h$&$K$J$j$^$7$?!#(B
(Linus $B;a$OF3F~$r7y$C$F$$$?$h$&$G$9$7!"(Braw device $B$J$s$F$$$i$J$$$H<gD%(B
$B$9$k(B Linux $B%f!<%6!<$bBt;38+$F$-$^$7$?$,!D(B)

$B8=:_$N(B Linux $B$G$O!"(B
	# raw /dev/raw/raw1 /dev/hda1
$B$N$h$&$K(B raw $B%3%^%s%I$G3d$jEv$F$F$d$l$P!"0J8e(B /dev/raw/raw1 $B$N(B
$B$h$&$J%G%P%$%9L>$G!"(Braw device $B%"%/%;%9$,$G$-$^$9!#(B
$BHf3S$9$k$J$i!">r7o$rB7$($k$?$a$K!"$I$A$i$b(B raw device $B$r;H$&(B
$B$3$H$r$*4+$a$7$^$9!#(B
--
soda
