From owner-FreeBSD-tech-jp@jp.freebsd.org  Wed Jun 25 22:50:28 1997
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To: FreeBSD-tech-jp@jp.FreeBSD.org
From: KATO Takenori <kato@ganko.eps.nagoya-u.ac.jp>
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Date: Wed, 25 Jun 1997 22:49:54 +0900
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Subject: [FreeBSD-tech-jp 289] bug in cluster write
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$B2CF#!wL>Bg4d9[$G$9!%(B

current$B$K$b=P$7$?$N$G$9$,!$F|K\8l$,;H$($k$N$G$3$A$i$K$b=P$7$F$*$-$^$9!%(B
Union filesystem$B$GM7$s$G$$$F!$(B

	# mount -t union /usr/src-pc98/sbin /usr/src/sbin
	# mount -t union /usr/src-pc98/usr.sbin /usr/src/usr.sbin

$B$H$d$C$F!$(BPC-98$B$N%=!<%9$r$b$H$N%=!<%9$K$+$V$;$^$9!%(B/usr/src-pc98$B$H(B
/usr/src$B$O!$0[$J$k%Q!<%F%#%7%g%s$KB8:_$7$^$9!%$=$7$F!$(B

	# make sbin usr.sbin

$B$r<B9T$9$k$H!$(B

	panic: vm_bounce_alloc: Unmapped page

$B$H$J$C$F$7$^$$$^$9(B :-($B!%(B

$B$3$l$r$J$s$H$+$7$?$$$N$G$9$,:#$N$H$3$m$*<j>e$2>uBV$G$9!%(Bcore dump$B$H$C(B
$B$F(Bkgdb$B$N%m%0$r$H$j$^$7$?$N$G!$(Bgzip + uuencode$B$7$?$b$N$r$D$1$F$*$-$^$9!%(B

real fix$B$G$O$J$$$G$9$,!$(Bsysctl$B$r;H$C$F(Bvfs.ffs.doclusterwrite$B$r(B0$B$K$9$k(B
$B$H!$;d$,;H$C$?HO0O$G$O!$$^$C$?$/LdBj$OH/@8$7$^$;$s!%$=$l$G(Bcluster
write$B$^$o$j$K$H$s$G$b$J$$%P%0$,$$$k$h$&$J5$$,$9$k$N$G$9$,!$$$$^$N$H$3(B
$B$m860x$,$o$+$j$^$;$s!%(B

$B2?$+$"$l$P$I$s$J$5$5$$$J$3$H$G$b65$($F2<$5$$!%$h$m$7$/$*4j$$$7$^$9!%(B

P.S.

$B;d$,;W$$$D$/(Bunion fs$B$N;H$$J}$O!$>e5-$N(BPC-98$B$N%=!<%9$r$+$V$;$k$3$H$/$i(B
$B$$$G$7$F!$$3$NLdBj$,2r7h$9$l$P!$(B`known to buggy, and WILL panic your
system'$B$+$i$O$:$l$k$N$G$O$J$$$N$+$H;W$C$F$$$^$9!%$"$H!$(Bcurrent$B$N(Bportal
fs$B$C$F$o$6$o$6L@<(E*$K(Bbuggy$B$H$$$&$[$I$N>uBV$G$9$+!)(B

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M@N[=@KH=U-1&NK[6*%99(;4"*`0FN((A5^"".SQH]]\:6QF96AD90>Z_!0"K
'7/U4*W<``-1&
`
end
---------- END ----------

----
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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