From owner-FreeBSD-users-jp@jp.freebsd.org  Mon Jan 19 11:12:13 1998
Received: by jaz.jp.freebsd.org (8.8.8+3.0Wbeta7/8.7.3) id LAA15730
	Mon, 19 Jan 1998 11:12:13 +0900 (JST)
Received: by jaz.jp.freebsd.org (8.8.8+3.0Wbeta7/8.7.3) with ESMTP id LAA15722
	for <FreeBSD-users-jp@jp.freebsd.org>; Mon, 19 Jan 1998 11:12:12 +0900 (JST)
Received: from localhost (localhost [127.0.0.1])
	by gneiss.eps.nagoya-u.ac.jp (8.8.8/3.6Wbeta7) with ESMTP id LAA01781
	for <FreeBSD-users-jp@jp.freebsd.org>; Mon, 19 Jan 1998 11:12:11 +0900 (JST)
To: FreeBSD-users-jp@jp.freebsd.org
From: KATO Takenori <kato@ganko.eps.nagoya-u.ac.jp>
In-Reply-To: Your message of "Mon, 19 Jan 1998 10:49:41 +0900 (JST)"
	<199801190149.KAA14114@jaz.jp.freebsd.org>
References: <199801190149.KAA14114@jaz.jp.freebsd.org>
X-Mailer: Mew version 1.92.4 on Emacs 19.28 / Mule 2.3 (SUETSUMUHANA)
X-PGP-Fingerprint: 03 72 85 36 62 46 23 03  52 B1 10 22 44 10 0D 9E
Mime-Version: 1.0
Content-Type: Text/Plain; charset=iso-2022-jp
Content-Transfer-Encoding: 7bit
Message-Id: <19980119111211M.kato@gneiss.eps.nagoya-u.ac.jp>
Date: Mon, 19 Jan 1998 11:12:11 +0900
X-Dispatcher: imput version 971024
Lines: 48
Reply-To: FreeBSD-users-jp@jp.freebsd.org
Precedence: bulk
X-Distribute: distribute [version 2.1 (Alpha) patchlevel=24]
X-Sequence: FreeBSD-users-jp 23408
Subject: [FreeBSD-users-jp 23408] Re: NULLFS
Errors-To: owner-FreeBSD-users-jp@jp.freebsd.org
Sender: owner-FreeBSD-users-jp@jp.freebsd.org

$B2CF#!wL>Bg4d9[$G$9!%(B


> $B;d$O(B2.2.2R$B$G(BAnonymous FTP$B%5!<%S%9$N0Y$K(Bnull file system$B$r;H$C$F$$$^$9(B
> $B$,!"(Bmirror$BMQ$N%9%/%j%W%H$rAv$i$;$F$$$kESCf$J$I$K;~!9(Bpanic$B$r5/$3$7$^$9!#(B
> $B<h$j4:$($:(BFreeBSD$B$N%$%s%9%H!<%kMQ$K>e$2$F$$$k%5!<%P$J$N$G5$$K$;$:;H$C(B
> $B$F$$$^$9$,!#(B

$B8=>u$G$O4m81$@$H;W$$$^$9!%(B


> $B$G!"(Bnull file system$B$r;H$C$F$$$k$H(Bpanic$B5/$3$9$H$$$&$3$H$r<RFb$N?M$K8@$C(B
> $B$?$i!"!V(Bnull file system$B$O;H$&?M$,$"$^$j$$$J$$$N$G(Bdebug$B$,=<J,$K$5$l$F(B
> $B$*$i$:!"(Bpanic$B$r5/$3$9$h$&$J%P%0$,7k9=@x$s$G$$$k$i$7$$$h!#!W$H$+$$$&$h(B
> $B$&$JOC$rJ9$+$5$l$?3P$($,$"$j$^$9!#(B

$B$H$$$&$3$H$G!%(Bnullfs$B$O$^$@C1=c$J$N$G(Bunionfs$B$[$I$R$I$/$O$J$$$N$G$9$,!$(B
$B$=$l$G$b0BDj$7$F;H$($k%l%Y%k$K$O$J$$$H;W$C$F$$$^$9!%0JA0$A$g$C$H$@$1D/(B
$B$a$F$_$?$N$G$9$,!$(Bvnode$B$N(Block/unlock$B$,2x$7$+$C$?$j$7$^$9!%(B3.0-current
$B$G$O(B4.4BSD-Lite2$B%Y!<%9$K$J$j!$$A$g$C$H$O$^$H$b$K$J$C$?$h$&$J5$$b$9$k$N(B
$B$G$9$,!$$=$b$=$b$*<i$j$9$k?M$,$$$J$$$N$G4m81$G$9!%(Bnullfs$B$N>l9g!$(Bvnode
$B$N(Block/unlock$B$O(Bnullfs layer$B$G$O9T$C$F$$$J$$$N$G$9$,!$$3$l$r!$(B

	1. $B$=$N$^$^$K$7$F4hD%$k!%(B
	2. unionfs$B$_$?$$$K(Bnullfs layer$B$G$N(Block/unlock$B4IM}$r9T$&$h$&$K(B
	   $B4hD%$k!%(B

$B$N$I$A$i$+$K$9$kI,MW$,$"$j$^$9(B($B$$$:$l$K$7$m4hD%$i$J$1$l$P$J$i$J$$(B)$B!%(B
NetBSD$B$H(BOpenBSD$B$O(B2$B$NJ}K!$r$H$C$F$$$^$9!%(B

$B$5$i$K$d$C$+$$$J$N$O!$(BFreeBSD$B$N(BVFS$B$^$o$j$,(B4.4BSD-Lite2$B$H$+$J$j0[$J$C$F(B
$B$$$k$3$H$G$9!%0l1~!$4X?t$N8F$S=P$75,Ls$J$I$OJQ$($F$$$J$$$N$G$9$,!$FbIt(B
$B$G$N5sF0$,Bg$-$/0[$J$C$F$$$^$9!%$=$7$F!$30LL$@$1$G$J$/<B:]$N5sF0$^$G2>(B
$BDj$7$?%3!<%I$,$"$A$i$3$A$i$K;6:_$7$F$$$k$N$G!$$*$b$o$L$H$3$m$G(Blocking
violation$B$r5/$3$7$F$/$l$?$j$7$^$9!%%3!<%I$r8+$F$b!$$Q$C$H8+$?$@$1$G$O(B
$B$J$<(Blocking violation$B$,5/$-$?$N$+$o$+$i$:!$(BVFS$B$^$o$j$r$-$A$s$H8+$F$O$8(B
$B$a$F$o$+$k$H$$$&$3$H$,>/$J$/$"$j$^$;$s!%(B

$B;d$N46?($G$O!$(Bsynthetic filesystem$B$*$h$S(Blocal disk$B$H$"$H$O(BNFS$B$N$3$H$7(B
$B$+9M$($F$$$J$$$N$G$O$J$$$+$H;W$$$^$9!%$=$N$;$$$G!$(Bnullfs/unionfs$B$d(Bvn$B%G(B
$B%P%$%9$J$I$,$$$^$R$H$D0BDj$7$J$$$N$@$H;W$$$^$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
------------------- Powered by FreeBSD(98) -------------------
