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To: FreeBSD-users-jp@jp.freebsd.org
From: MITSUNAGA Noriaki <mitchy@er.ams.eng.osaka-u.ac.jp>
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Subject: [FreeBSD-users-jp 47623] swap on a vn device on 3.3-RELEASE
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$B$I$J$?$+!"(BFreeBSD 3.3-RELEASE$B$G(B vnconfig $B$G@_Dj$7$?2>A[%G%P%$%9$r(B swap 
$B$K;H$($F$$$k$G$7$g$&$+(B?

FreeBSD(98) 3.3-RELEASE Rev.01 $B$G!"(Bdiskless client $B$r$D$/$m$&$H$7$F!"(B
NFS $B%^%&%s%H$7$?%U%!%$%k%7%9%F%`>e$K(B swap file $B$r$D$/$C$F!"(Bswapon $B$9$k(B
dd if=/dev/zero of=/var/swap bs=1k count=16000
vnconfig /dev/vn0c /var/swap
swapon /dev/vn0c
$B$H!"(B/var/swap $B$r;H$$$K$$$C$?$"$?$j$G!"(Bpanic $B$7$^$9!#(B

Fatal trap 12: page fault while in kernel mode
fault virtual addresss  = 0xc17cc000
falut code		= super isor read, page not present
instruction pointer	= 0x8: 0xc01d974e
stack pointer		= 0x10:0xc2896a74
frame pointer		= 0x10:0xc2896ab4
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, def 32 1, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 2 (pagedaemon)
interrupt mask		= net bio cam
trap number		~ 12
panic: page fault

$B$H$J$j$^$9(B($B;f$K=q$$$?$N$G>/$70c$&$+$bCN$l$^$;$s(B)$B!#(B2.2.8 $B$G$OF1$8$3$H$,(B
$B=PMh$F$$$^$7$?!#(B

$B$^$?!"(B3.3-RELEASE (i386, local $B$K(B HDD $B$r$b$D(B) $B$G!"F1MM$K(B vnconfig $B$9$k(B
($B%m!<%+%k$N(B HDD $B>e$K(B) $B$H(B

oliv# make 
cc -c -O -Wreturn-type -Wcomment -Wredundant-decls -Wimplicit -Wnested-externs -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Winline -Wuninitialized -Wformat -Wunused -fformat-extensions -ansi  -nostdinc -I- -I. -I../.. -I/usr/include  -DKERNEL -DVM_STACK -include opt_global.h ../../i386/i386/genassym.c
In file included from ../../i386/i386/genassym.c:64:
../../nfs/nfs.h:509: virtual memory exhausted
*** Error code 1

Stop.
oliv# w
w: Cannot allocate memory
oliv# ls
ls: Cannot allocate memory
oliv# swapinfo
swapinfo: kvm_openfiles: Cannot allocate memory

$B$H$$$C$?46$8$G!"(Bpanic $B$3$=5/$3$7$^$;$s$,!"(Breboot$B$;$6$k$rF@$J$$>uBV$K$J(B
$B$j$^$9!#(B

// $B$_$D$J$,(B $B$N$j$"$-(B //
