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To: FreeBSD-tech-jp@jp.freebsd.org
From: KATO Takenori <kato@ganko.eps.nagoya-u.ac.jp>
In-Reply-To: Your message of "Tue, 30 Sep 1997 21:01:51 +0900"
References: <199709301201.VAA00194@sras63.sra.co.jp>
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Date: Wed, 01 Oct 1997 00:11:27 +0900
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Subject: [FreeBSD-tech-jp 675] Re: panic when I use vn driver on RELENG_2_2
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$B2CF#!wL>Bg4d9[$G$9!%(B

> 	5. $B$=$N(B block buf $B$O(B buf pool $B$K$_$D$+$j$^$;$s$G$7$?!#(B
> 	   last used buf $B$r(B buf pool $B$+$i;}$C$F$-$F!"$=$N(B block $B$N(B
> 	   $B$?$a$K(B flush $B$7$h$&$H$7$^$9!#(B
> 	6. $B$H$3$m$,!"$=$N(B block $B$O(B vn $B>e$N(B ufs $B$N(B dirty buf $B$G$7$?!#(B
> 	   $B$=$N(B block $B$N(B flush $B$N$?$a$K:F$S(B vnstrategy $B$,8F$P$l$^$9!#(B

$B$J$k$[$I!$(Blast used buf$B$r;H$C$F$$$k$o$1$G$9$+!%$3$l$@$H(Bbuf$B$,$?$/$5$s$"(B
$B$k>uBV$G$OH/@8$7$J$$$o$1$G$7$F!$8+$D$1$K$/$$%H%i%V%k$J$N$@$H;W$$$^$9!%(B

$B$=$&$9$k$H!$(B

  1. $B0lHV:G=i$N!$(BVOP_ISLOCK()$B$G8!::$9$k!%(B

$B$G3N<B$K2sHr$G$-$k$o$1$G$9$,!$:,K\E*$J2r7h$K$J$C$F$$$J$$$H;W$$$^$9!%(B
vnode layer device / filesystem$B$G$O>o$KIU$-$^$H$&LdBj$J$o$1$G$7$F!$(B

  2. delayed write$B$N$[$&$GBP=h$9$k$N$,0lHLE*$J2r7h(B

$B$@$H;W$$$^$9!%(B

$B$G$b!$$I$&$7$?$i$h$$$N$+$o$+$i$J$$$G$9!%$^$!!$(B1$B$NJ}K!$r(Bvnode layer
device / filesytem$B$N%k!<%k$H$9$l$PNI$$$N$G$9$,(B....

----
KATO Takenori <kato@ganko.eps.nagoya-u.ac.jp>
Dept. Earth Planet. Sci., Nagoya Univ.,  Nagoya, 464-01, Japan
PGP public key: finger kato@eclogite.eps.nagoya-u.ac.jp
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