From owner-FreeBSD-users-jp@jp.freebsd.org  Thu May  8 18:17:11 1997
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Date: Thu, 8 May 1997 18:17:08 +0900 (JST)
Message-Id: <199705080917.SAA12969@susie.gen.u-tokyo.ac.jp>
To: FreeBSD-users-jp@jp.freebsd.org
From: kura@susie.gen.u-tokyo.ac.jp (Tomohiko Kurahashi)
X-Mailer: mnews [version 1.20PL3] 1997-03/09(Sun)
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Subject: [FreeBSD-users-jp 12571] MFS image is invalid (2.2-970422-RELENG)
Errors-To: owner-FreeBSD-users-jp@jp.freebsd.org
Sender: owner-FreeBSD-users-jp@jp.freebsd.org

  $BAR66!wElBg$G$9!#(B

  $B$3$l$^$G(B 2.1.7.1-RELEASE $B$r:\$;$F$$$?2<5-$N%^%7%s$K!"(B2.2-970422-RELENG
$B$r%$%s%9%H!<%k$7$?=j!"(BMFS $B$,;H$($J$/$J$C$F$7$^$$$^$7$?!#(B

CPU   : Pentium (199.43-MHz 586-class CPU)
Mother: ASUS P/I-XP55T2P4
Memory: real 65536K bytes
HDD   : QUANTUM FIREBALL_TM2550A (wd0$B!&(BDOS 480MB/FreeBSD 2020MB)

  options MFS $B$H(B options MFS_ROOT=10 $B$rDI2C$7$F(B kernel compile
$B$7$?$N$G$9$,!"5/F0;~(B MFS$B$J$7$J$i$P(B "swapon ..." $B$H$J$k=j$G!"(B
"MFS image is invalid!!" $B$H=P$F(B panic $B$7$F$7$^$$$^$9!#(B

/sys/ufs/mfs/mfs_vfsops.c:271
    /* recheck for valid super block */
    if (fs->fs_magic != FS_MAGIC || fs->fs_bsize > MAXBSIZE ||
        fs->fs_bsize < sizeof(struct fs)) {
            panic("MFS image is invalid!!");
    }

$B$N%A%'%C%/;~$K(B fs->fs_bsize = 0 $B$G$"$k$?$a$i$7$$$N$G$9$,!";d$K$O(B
$B$I$&$7$F$3$&$J$k$N$+$5$C$Q$j$o$+$j$^$;$s!#$I$J$?$+8fNO$rGR<Z4j$((B
$B$^$;$s$G$7$g$&$+(B? $B59$7$/$*4j$$CW$7$^$9!#(B

  $B0J2<$K(B fstab $B$bIU$1$^$9!#(B

/etc/fstab:
# Device                Mountpoint      FStype  Options         Dump    Pass#
/dev/wd0a               /               ufs     rw              1       1
/dev/wd0s2b             none            swap    sw              0       0
/dev/wd0s2e             /usr            ufs     rw              1       1
/dev/wd0s2f             /var            ufs     rw              1       1
proc                    /proc           procfs  rw              0       0
/dev/wcd0c              /cdrom          cd9660  ro,noauto       0       0
#/dev/wd0s2b            /tmp            mfs     rw,-s=32768     0       0
-- 
$BAR66(B  $BCRI'(B                  E-Mail  : kura@susie.gen.u-tokyo.ac.jp
Tomohiko Kurahashi          HomePage: http://selina.gen.u-tokyo.ac.jp/~kura/
