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From: Poul-Henning Kamp <phk@FreeBSD.org>
Date: Fri, 30 Mar 2001 00:01:35 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sbin/fsck fsck.8 fsck.c fsutil.h preen.c
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phk         2001/03/30 00:01:35 PST

  Modified files:
    sbin/fsck            fsck.8 fsck.c fsutil.h preen.c 
  Log:
  This change sanitizes the way fsck deals with pass numbers.
  
  Consider this /etc/fstab:
  
  # Device         Mountpoint      FStype  Options    Dump    Pass#
  /dev/ad1s1b      none            swap    sw         0       0
  /dev/ad0s1b      none            swap    sw         0       0
  /dev/ad0s1a      /               ufs     rw         1       1
  /dev/ad0s1e      /home           ufs     rw         2       2
  /dev/ad1s1e      /tmp            ufs     rw         2       2
  /dev/ad1s1f      /usr            ufs     rw         2       2
  /dev/ccd0c       /syv            ufs     rw         2       11
  proc             /proc           procfs  rw         0       0
  
  ccd0c is striped over /dev/ad0f and /dev/ad1g
  
  Without this pass, fsck in preen mode will check ad0s1a first,
  and then issue three processes in parallel:
  
  One process doing ad0s1e
  One process doing ad1s1e and ad1s1f
  One process doing ccd0c
  
  There is no way to tell it that ccd0c overlaps ad0 and ad1.
  
  With the patch, it will do it this way:
  
  pass 2:
  One process doing ad0s1e
  One process doing ad1s1e and ad1s1f
  
  and when they are complete:
  
  pass 11:
  One process doing ccd0c
  
  This is much faster and more sane.
  
  Valid pass numbers are anything from 1 to INTMAX-1.
  
  I retired the '-l' option which tried to allow people to do
  something like this, but which didn't work and which complicated
  the code an awful lot.
  
  Revision  Changes    Path
  1.22      +17 -10    src/sbin/fsck/fsck.8
  1.4       +3 -4      src/sbin/fsck/fsck.c
  1.2       +2 -2      src/sbin/fsck/fsutil.h
  1.22      +46 -49    src/sbin/fsck/preen.c


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