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freebsd/sbin/fsck
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Kirk McKusick e50342e665 Yesterday I had to fix a badly broken disk, and found that fsck kept dying: 
DIR I=64512 CONNECTED. PARENT WAS I=4032
  fsck: cannot find inode 995904

fsdb found the inodes with no problem:

  fsdb (inum: 64512)> inode 995904
  current inode: directory
  I=995904 MODE=40777 SIZE=512
        MTIME=Feb 14 15:27:07 2000 [0 nsec]
        CTIME=Feb 14 15:27:07 2000 [0 nsec]
        ATIME=Feb 24 10:31:58 2000 [0 nsec]
  OWNER=nobody GRP=nobody LINKCNT=4 FLAGS=0 BLKCNT=2 GEN=38a41386
  Direct blocks: 8094568 0 0 0 0 0 0 0 0 0 0 0
  Indirect blocks:  0 0 0

The problem turns out to be a program logic error in fsck.  It stores
directory inodes internally in hash lists, using the number of
directories to form the hash key:

        inpp = &inphead[inumber % numdirs];

Elsewhere, however, it increments numdirs when it finds unattached
directories.  I've made the following fix, which solved the problem in
the case in hand.

Submitted by:	Greg Lehey <grog@lemis.com>
Reviewed by:	Matthew Dillon <dillon@apollo.backplane.com>
Approved by:	Kirk McKusick <mckusick@mckusick.com>
2000-02-28 20:02:41 +00:00
..
SMM.doc Fix the case where fsck would not see sparse directories and the kernel would 1996-10-08 14:54:53 +00:00
dir.c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
fsck.8 $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
fsck.h Yesterday I had to fix a badly broken disk, and found that fsck kept dying: 2000-02-28 20:02:41 +00:00
inode.c Yesterday I had to fix a badly broken disk, and found that fsck kept dying: 2000-02-28 20:02:41 +00:00
main.c Fix the use of an uninitialized variable in the previous commit. 2000-01-10 14:20:53 +00:00
Makefile Latest version of fsck from the folks at EX-CSRG specifically Kirk Mckusick. 1998-12-02 20:53:40 +00:00
pass1.c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
pass1b.c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
pass2.c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
pass3.c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
pass4.c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
pass5.c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
preen.c Make fsck(8) do a MNT_RELOAD after cleaning for all read-only mounted 1999-12-30 16:32:40 +00:00
setup.c Yesterday I had to fix a badly broken disk, and found that fsck kept dying: 2000-02-28 20:02:41 +00:00
utilities.c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00