From owner-FreeBSD-users-jp@jp.freebsd.org  Sat Sep 13 19:11:52 1997
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To: FreeBSD-users-jp@jp.freebsd.org
In-reply-to: Your message of "Mon, 08 Sep 1997 23:38:25 JST."
             <199709081438.XAA25877@lavender.sanpei.org> 
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Date: Sat, 13 Sep 1997 19:11:40 +0900
From: Yoshiaki Uchikawa <yoshiaki@kt.rim.or.jp>
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Subject: [FreeBSD-users-jp 18068] Re: Tape Device: DDS2 or Travan-8G 
Errors-To: owner-FreeBSD-users-jp@jp.freebsd.org
Sender: owner-FreeBSD-users-jp@jp.freebsd.org

$B$&$A$+$o$G$9(B
$B$A$g$C$HK:$l$?:"$NOC$K$J$C$F?=$7Lu$J$$$G$9$,!"(B
>>>>> In <199709081438.XAA25877@lavender.sanpei.org> 
>>>>>	MIHIRA "Sanpei" Yoshiro <sanpei@yy.cs.keio.ac.jp> wrote:

 > $B$3$A$i$G$O(B, 2.1.5-R $B$N%^%7%s$G<!$NMM$KG'<1$7$F$$$^$9(B. 

 > (ncr0:2:0): "CONNER CTT8000-S 1.17" type 1 removable SCSI 2
 > st0(ncr0:2:0): Sequential-Access
 > st0(ncr0:2:0): 200ns (5 Mb/sec) offset 8.

 >   $B$"$H(B, $B0JA0<ALd$7$?$N$G$9$,(B, $B$I$J$?$+$i$b$*JV;v$,$J$/ITL@$G(B, $B05=L$G(B
 > $B$-$k$N$+$G$-$J$$$N$+$o$+$j$^$;$s(B. 

 > # $B$J$K$+J}K!$,$"$l$P!D!D(B

2.2-RELENG $B$G$9$,(B /sys/scsi/st.c $B$r8+$k$H(B ioctl $B$K0J2<$N$h$&$JItJ,$,$"(B
$B$j$^$9!#(B

        case MTIOCTOP:
                {
		:
		:
                        case MTCOMP:    /* enable default compression */
                                errcode = st_comp(unit,number);
                                break;

$B$=$l$+$i(B /usr/include/sys/mtio.h $B$K$O(B

/* structure for MTIOCTOP - mag tape op command */
struct mtop {
        short   mt_op;          /* operations defined below */
        daddr_t mt_count;       /* how many of them */
};
	:
	:
#define MTCOMP          14      /* select compression mode 0=off, 1=def */

SCSI-2 $B0J9_$G$O%7!<%1%s%7%c%k%G%P%$%9$K$*$1$k%G!<%?05=L%3%s%H%m!<%k$N(B
$B%3%^%s%I$,Dj5A$5$l$F$$$^$9$+$i$*$=$i$/$O(B SCSI $B%F!<%W%G%P%$%9$G$O6&DL$K(B
$BMxMQ$G$-$k$N$G$O$J$$$+$H9M$($i$l$^$9!#(B

$B$D$^$j(B /dev/rst0.ctl $B7PM3$G%3%s%H%m!<%k$G$-$=$&$G$9!#(B
$B$H$^$"!"$3$3$^$G=q$$$F5$$,IU$$$?$N$G$9$,(B 

 % man mt $B$G(B
     comp      Set compression mode.  (Not yet implemented.)

$B$H=q$+$l$F$$$k$N$G$9$,!"<B$O$3$l$OF0$/$N$G$O$J$$$+(B? $B$H5?$C$F$$$^$9!#(B
$B3NG'$G$-$k$+$I$&$+$o$+$i$J$$$N$G$9$,!"<+A0$N(B DDS-DC $B%I%i%$%V$G;n$7$F$_(B
$B$^$9!#(B
-----
  yoshiaki@kt.rim.or.jp
($B$&(B)
