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From: ARAKAWA Osamu <oarakawa@mri-jma.go.jp>
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Subject: [FreeBSD-users-jp 54003] Re: density change operation for scsi
 tape device
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$B9S@n!w5$>]8&5f=j$H?=$7$^$9!#(B

$B!t%@%$%8%'%9%H9XFI$J$N$G$b$&$9$G$K$@$l$+%l%9%]%s%9$7$F$$$k$+$b$7$l$^$;(B
$B!t$s$,(B....

From: Masayuki Takayanagi <taka@angel01.micro.dnp.co.jp>
Subject: [FreeBSD-users-jp 53990] density change operation for scsi tape device
Date: Fri, 04 Aug 2000 21:18:58 +0900
Message-ID: <398AB4B1.5F885568@angel01.micro.dnp.co.jp>

> OS$B$+$i$NL)EY;XDjJ}K!$,NI$/J,$+$j$^$;$s!#(Bmt$B%3%^%s%I$GE,Ev$J(Bdensity$B%3!<%I(B

$B$3$l$O!"(Btar$B$d(Bdd$B$J$I$G$N%G%P%$%9;XDj$GD>@\F0:n%b!<%I$b;XDj$G$-$k$h$&$K(B
$B$7$?$$$H$$$&$3$H$G$9$M!#(B

$B;d$b0JA0$[$I$G$O$J$$$G$9$,!"(BSun$B$G(BExabyte$B$r;H$&$3$H$,$"$j$^$9!#(B
SunOS4.x$B!"(B5.x$B$H$b!"3N$+$K%+!<%M%k%l%Y%k!J$H$$$&$+!"(Bst device driver$B$N(B
$B%Q%i%a!<%?%U%!%$%k(B)$B$G(BExabyte$B$K8B$i$J$$$H$*$b$$$^$9$,!"F0:n%b!<%I$r;H$$(B
$BJ,$1$k$3$H$,$G$-$^$7$?!#(B

$B<g$K$O$8$a$O(BEXB-8205XL$B!"$=$N8e(BEXB-8505XL$B$r;H$C$F$-$?$N$G$9$,!"(B
EXB-8505XL$B$rNc$K$H$k$H;d$O0J2<$N$h$&$K;H$$J,$1$F$$$^$7$?!#(B

$B%G%P%$%9L>$O(B
SunOS4.x : /dev/rst0
SunOS5.x : /dev/rmt/0
$B$H$7$^$9!#(B

         8200 mode     8200c mode     8500 mode     8500c mode
SunOS4.x /dev/rst0     /dev/rst8      /dev/rst16    /dev/rst24
SunOS5.x /dev/rmt/0l   /dev/rmt/0m    /dev/rmt/0h   /dev/rmt/0c

Sun$B$G$O$3$N$h$&$K!">u67$K1~$8$F=q$-9~$_%b!<%I$r;H$$J,$1$k$3$H$,$G$-$F(B
$B$$$^$7$?!#(B

FreeBSD$B$G$O$I$&$+$H$$$&$H!"IaCJ(BDAT(HP C1533A)$B$r;H$C$F$$$F(BExabyte$B$O0JA0(B
$B;n$7$K$D$J$$$G$_$?$3$H$,$"$kDxEY$J$N$G$"$^$j3N$+$J$3$H$O?=$;$^$;$s$,!"(B
$B;d$bF1$8$h$&$K%+!<%M%k%l%Y%k$GF0:n%b!<%I$rDj5A$7!"%G%P%$%9L>$GF0:n%b!<(B
$B%I$r;H$$J,$1$i$l$J$$$+$HD4$Y$?$3$H$,$"$k$N$G$9$,!"Ev;~$O$o$+$j$^$;$s(B
$B$G$7$?!#(B
$B$$$^$G$b!"%=!<%9$r$6$C$H8+$?8B$j$G$OJQ$o$C$F$$$J$$$h$&$G$9$M!#(B
$B!t$"!";d$,8=:_;HMQ$7$F$$$k$N$O(B3.3-RELEASE$B$G$9!#(B

$B$G$O!"(Bmt$B%3%^%s%I$G(Bdensity$B$d(Bcomp$B$r$$$A$$$AJQ99$7$J$$$GF0:n%b!<%I$r;H$$(B
$BJ,$1$k$3$H$,$G$-$J$$$N$+$H$$$&$H!"$=$&$G$b$J$5$=$&$G$9!#(B

$B$$$^!"$A$g$C$H(Btape device$B$r$O$:$7$F$7$^$C$F$$$k$N$GNc<($9$k$3$H$,$G$-(B
$B$J$$$N$G$9$,!"(B

mt <device> status

$B$r$4Mw$K$J$l$P$o$+$k$h$&$K(Bmode 0-3$B$H(B4$B$D$NF0:n%b!<%I$r$-$a$i$l$k$3$H$,(B
$B$o$+$j$^$9!#(B

$B<B:](B ls -l /dev/*sa0* $B$r$_$k$H(B

crw-rw----  2 root  operator   14,   2 Apr 30  1999 /dev/ersa0
crw-rw----  2 root  operator   14,   2 Apr 30  1999 /dev/ersa0.0
crw-rw----  1 root  operator   14,   6 Apr 30  1999 /dev/ersa0.1
crw-rw----  1 root  operator   14,  10 Apr 30  1999 /dev/ersa0.2
crw-rw----  1 root  operator   14,  14 Apr 30  1999 /dev/ersa0.3
crw-rw-rw-  2 root  operator   14,   1 Jul 31 18:22 /dev/nrsa0
crw-rw-rw-  2 root  operator   14,   1 Jul 31 18:22 /dev/nrsa0.0
crw-rw-rw-  1 root  operator   14,   5 Apr 30  1999 /dev/nrsa0.1
crw-rw-rw-  1 root  operator   14,   9 Apr 30  1999 /dev/nrsa0.2
crw-rw-rw-  1 root  operator   14,  13 Apr 30  1999 /dev/nrsa0.3
crw-rw----  2 root  operator   14,   0 Apr 30  1999 /dev/rsa0
crw-rw----  2 root  operator   14,   0 Apr 30  1999 /dev/rsa0.0
crw-rw----  1 root  operator   14,   4 Apr 30  1999 /dev/rsa0.1
crw-rw----  1 root  operator   14,   8 Apr 30  1999 /dev/rsa0.2
crw-rw----  1 root  operator   14,  12 Apr 30  1999 /dev/rsa0.3
crw-rw----  1 root  wheel      14, 0x20000000 Apr 30  1999 /dev/rsa0.ctl

$B$H!"$d$O$j%G%P%$%9L>$,(Brsa0$B$NB>$K$5$i$K(B4$B$D$"$k$N$,$o$+$j$^$9!#(B
$B!t(Bersa0$B!"(Bnrsa0$B!"(Brsa0.ctl$B$N0UL#$O(B"man 4 sa"$B$r;2>H$N$3$H!#(B
$B$3$N(B4$B$D$N%G%P%$%9L>$=$l$>$l$K(Bmt$B%3%^%s%I$G(Bdensity$B$H(Bcomp$B$rAH$_9g$o$;$F(B
$B3d$jEv$F$F$d$l$P!"F0:n%b!<%I$r;H$$J,$1$i$l$k$N$G$O$J$$$G$7$g$&$+!#(B
$B7+$jJV$7$^$9$,!"$$$^$N;d$K$O(BFreeBSD$B$G(BExabyte$B$r;HMQ$9$k$3$H$N$G$-$k4D6-(B
$B$K$O$J$$$N$G!";n$7$?$o$1$G$O$"$j$^$;$s!#(B
$B$G$9$+$i!"<BCO$K;n$7$?$o$1$G$O$J$$$N$G$9$,!"0J2<$N$h$&$K$9$l$PF0:n%b!<(B
$B%I$N;H$$J,$1$,$G$-$k$N$G$O$J$$$G$7$g$&$+!#(B

tape device : sa0

              density	comp
 8200  mode   0x14      off
 8200c mode   0x14	on
 8500  mode   0x15      off
 8500c mode   0x15      on

 ex. 8500c mode$B$N>l9g(B
     mt -f /dev/rsa0 density 0x15 comp on

$BK\Ev$K$3$A$i$N0U?^$7$?F0:n%b!<%I$G$+$-$3$^$l$F$$$k$+$I$&$+$r3NG'$9$k<j(B
$BCJ$H$7$F(B

iostat

$B$,$"$j$^$9!#(B
$B$^$?!"05=L%b!<%I$G=q$-9~$^$l$F$$$k$+$I$&$+$r3NG'$9$k$b$&0l$D$N<jCJ$H$7(B
$B$F!"%I%i%$%V$N%a%G%#%"A^F~8}$N:8B&$K$"$k(B3$B$D$N(BLED$B$N$&$A??$sCf$N$b$N$N(B
$B?'$G3NG'$9$k$3$H$b$G$-$^$9!#(B

$BFI$_9~$_(B/$B=q$-9~$_Cf$N(BLED$B$N?'$,(B

   $B%"%s%P!<(B($B`h`a?'(B) ----> $B05=L%b!<%IF0:nCf(B
   $BNP?'(B             ----> $B05=L%b!<%IHsF0:n(B

$B$H!"H=CG$9$k$3$H$,$G$-$^$9!#(B
$B$?$@$7!"$3$l$O:G6a$N(BEliant$B%7%j!<%:$G$O!"??$sCf$N(BLED$B$O>o$KNP?'$N$_$H$J(B
$B$C$F$$$F$3$N3NG'<jCJ$O;H$($J$$$h$&$G$9!#(B

$B0J>e;29M$K$J$C$?$G$7$g$&$+!)(B

------
arkw





