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Date: Mon, 17 May 1999 00:48:26 +0900
From: Yoshiaki Uchikawa <yoshiaki@kt.rim.or.jp>
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Subject: [doc-jp 6312] Re: 3.2-RELEASE RELNOTES.TXT
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$B$&$A$+$o$G$9(B

>>>>> From: SUGIMURA Takashi $B?yB<(B $B5.;N(B <sugimura@kitanet.co.jp>
>>>>> Date: [doc-jp 6311] Re: 3.2-RELEASE RELNOTES.TXT

 > $B86J8$O<!$N$h$&$K$J$C$F$$$^$9(B.
 > 
 > Camcontrol now allows users to view the number of tagged openings for
 > any given device, and allows users to set the number of tagged openings
 > for any device that supports tagged queueing.
 > 
 > $B$I$&Lu$9$N$,$$$$$G$7$g$&(B.
 > $B@lLgMQ8l$OFq$7$$$G$9$h$M(B..
 > 

$B;d$N>l9g$*$*$`$M!V%?%0%3%^%s%I%-%e!<%$%s%0!W$GDL$7$A$c$&$N$@$1$I!#(B
$B!V%?%0$D$-%3%^%s%I%-%e!<%$%s%0!W$G$b$$$$$+$J!#(B
SCSI$B$N;EMM$K$D$$$F$NCN<1$,$J$$$H?I$$$G$9$M!#(B

$B!t:G6a$O;d$O$[$H$s$I$4L5:;BA$G$9!#(B

I/O$B%3%^%s%I$N%-%e!<%$%s%0(B - $B$^$H$a$FJ#?t$N%3%^%s%I$r%?!<%2%C(B
$B%H$KBP$7$FH/9T$7$F$*$$$F!"<B9T$5$;$k5!9=$,$"$k$N$@$1$I(B SCSI-2$B0J9_$O(B
$B!V%?%0$D$-!W$,2DG=$K$J$C$F$$$^$9!#C"$7%*%W%7%g%s$J$N$G%5%]!<%H$7$J$$(B
$B%G%P%$%9$b$"$j$^$9!#%-%e!<%$%s%0$O%m%8%+%k%f%K%C%HC10L$G9T$J$o$l$k$3$H(B
$B$K$J$C$F$$$^$9!#(BSCSI-2$B0JA0$N%-%e!<%$%s%0$O%3%^%s%I(B1$B$D$N$_$,2DG=$G$7$?!#(B

$B%?%0$K$O(B simple , orderd, head $B$N(B3$B<oN`$,$"$C$F!"(B simple $B$N%?%0$r;}$D$b(B
$B$N$O>u67$K$h$C$F%3%^%s%I$N<B9T=g=x$NJQ99$r5v$7$^$9!#(B
head $B$O8=:_<B9TCf$N%3%^%s%I%W%m%;%9$N=*N;8e:GM%@h$G<B9T$5$l$^$9!#(B

$B$3$l$0$i$$$NM=HwCN<1$,$"$l$P(B camcontrol $B$N(B man $B$r8+$k$H$o$+$k$N$G$O$J$$(B
$B$+$J$"(B...(^_^;


     tags        Show or set the number of "tagged openings" or simultaneous
                 transactions we attempt to queue to a particular device.  By
                 default, the `tags' command, with no command-specific argu-
                 ments (i.e. only generic arguments) prints out the "soft"
                 maximum number of transactions that can be queued to the de-
                 vice in question.  For more detailed information, use the -v
                 argument described below.

                 -N tags  Set the number of tags for the given device.  This
                          must be between the minimum and maximum number set
                          in the kernel quirk table.  The default for most de-
                          vices that support tagged queueing is a minimum of 2
                          and a maximum of 255.  The minimum and maximum val-
                          ues for a given device may be determined by using
                          the -v switch.  The meaning of the -v switch for
                          this camcontrol subcommand is described below.


                 -q       Be quiet, and don't report the number of tags.  This
                          is generally used when setting the number of tags.

                 -v       The verbose flag has special functionality for the
                          tags argument.  It causes camcontrol to print out
                          the tagged queueing related fields of the
                          XPT_GDEV_TYPE CCB:

                          dev_openings   This is the amount of capacity for
                                         transactions queued to a given de-
                                         vice.

                          dev_active     This is the number of transactions
                                         currently queued to a device.

                          devq_openings  This is the kernel queue space for
                                         transactions.  This count usually
                                         mirrors dev_openings except during
                                         error recovery operations when the
                                         device queue is frozen (device is not
                                         allowed to receive commands), the
                                         number of dev_openings is reduced, or
                                         transaction replay is occurring.
-- 
  yoshiaki@kt.rim.or.jp
 ($B$&(B)  
