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To: FreeBSD-users-jp@jp.freebsd.org
Date: Sun, 20 Apr 1997 16:29:51 +0900
From: Masachika ISHIZUKA <ishizuka@isis.isl.ntt.co.jp>
Reply-To: FreeBSD-users-jp@jp.freebsd.org
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X-Distribute: distribute [version 2.1 (Alpha) patchlevel=19]
X-Sequence: FreeBSD-users-jp 11947
Subject: [FreeBSD-users-jp 11947] About ccd
Errors-To: owner-FreeBSD-users-jp@jp.freebsd.org
Sender: owner-FreeBSD-users-jp@jp.freebsd.org

  $@@PDM!w?yJB$G$9!#(J

  $@?.Mj@-$r$"$2$k$?$a$K!"(Jccd $@$r;H$C$F(J disk $@$r%_%i!<%j%s%0$7$?$$(J
$@$N$G$9$,!"@_Dj$,$h$/H=$i$J$$$N$G!"65$($F2<$5$$!#(J

% cat /etc/ccd.conf
ccd3            32      6       /dev/sd4e /dev/sd5e

(1) $@8=:_!"(J/etc/ccd.conf $@$G>e5-$N$h$&$K(J interleave $@$r(J 32 $@$K;XDj(J
  $@$7$F$$$^$9$,!"$3$N0UL#$,H=$j$^$;$s!#(Jinterleave $@$O(J disk $@$r(J
  stripping $@$9$k;~$K!"$I$NC10L$G9T$&$+$r;XDj$9$k$b$N$@$H;W$C$F(J
  $@$$$?$N$G!":G=i$O(J 0 $@$r;XDj$7$F$_$?$N$G$9$,!"(J0 $@$@$H(J mirroring
  $@$,(J disable $@$5$l$k$N$G!"(J0 $@0J30$NCM$r=q$$$F$_$?$N$G$9$,!"$3$N(J
  $@CM$O!J(Jconcatinate $@$d(J stripe $@$7$J$$$G!K(Jmirror $@$9$k;~$K$O!"$I(J
  $@$&$$$&0UL#$K$J$k$N$G$7$g$&$+!#(J

(2) flag $@$O(J mirror $@$N$?$a$K(J 4 $@$r;XDj$7$F$_$?$N$G$9$,!"<+F0E*$K(J
  uniform interleave $@$b;XDj$5$l$k$h$&$J$N$G!"(J6 $@$KJQ99$7$^$7$?!#(J
  $@$3$N(J uniform interleave $@$H$O!"$I$&$$$&$b$N$J$N$G$7$g$&$+!#(J

(3) $@$D$$$G$K(J flag = 1 $@$N(J interleave should be dmmax $@$H$$$&$N(J
  $@$O!"$I$&$$$&0UL#$J$N$+!"$3$l$b65$($F$$$?$@$1$k$H9,$$$G$9!#(J

---
  $@$H$$$&$3$H$G!"0UL#$O$h$/M}2r$7$F$$$J$$$N$G$9$,!"0l1~(J mirroring
$@>uBV$G!"2wD4$KF0$$$F$$$^$9!#(J

% df -k /dev/ccd[0-3]c
Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
/dev/ccd0c      98463     2616    87970     3%    /var/log
/dev/ccd1c     297407        1   273614     0%    /var/mail
/dev/ccd2c    3709278   511117  3012698    15%    /home
/dev/ccd3c    4199789        3  3989797     0%    /ftp
%
  write $@$,$A$g$C$HCY$$!JC1$J$k(J scsi-2 card $@$r;H$C$F$k$N$,860x(J
$@$+$b$7$l$J$$!K$1$I!"=<J,<BMQE*$JB.EY$G$9$M!#!J(J1GB $@$NO"B3=q$-9~(J
$@$_$G(J ccd $@$7$J$$>l9g(J 5MB/sec $@DxEY!#(Jccd $@$9$k$H(J 4MB/sec $@DxEY!#(Jread
$@$O6&$K(J 6MB/sec $@DxEY!#!K(J
