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Date:      24 Feb 2002 17:31:02 +0000
From:      Harry Newton <harry_newton@telinco.co.uk>
To:        freebsd-stable@freebsd.org
Subject:   newfs frag & block sizes
Message-ID:  <86u1s6iy7k.fsf@basilisk.locus>

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I've just been rebuilding some of my filesystems, and noticed that the
fragment size : block size ratio isn't the recommended ( in newfs(8) )
1:8. Disklabel gives:

8 partitions:
#        size   offset    fstype   [fsize bsize bps/cpg]
  a:   262144        0    4.2BSD     8192 16384   290   # (Cyl.    0 - 16*)
  b:  1048576   262144      swap                        # (Cyl.   16*- 81*)
  c: 17928477        0    unused        0     0         # (Cyl.    0 - 1115*)
  d:  2097152  1310720    4.2BSD     8192 16384   261   # (Cyl.   81*- 212*)
  e:  2097152  3407872    4.2BSD     1024  8192    22   # (Cyl.  212*- 342*)
  f:  4194304  5505024    4.2BSD     8192 16384   261   # (Cyl.  342*- 603*)
  g:  8229149  9699328    4.2BSD     8192 16384   262   # (Cyl.  603*- 1115*)
 
( e has been rebuilt again with the -f and -b flags ).

FreeBSD basilisk.locus 4.5-STABLE FreeBSD 4.5-STABLE #0: Fri Feb 22 20:20:52 GMT 2002     root@basilisk.locus:/usr/obj/usr/src/sys/BASILISK  i386

Is there a reason for this ?

- Harry

-- 
Harry Newton
harry_newton at telinco.co.uk
www.gaudeamus.telinco.co.uk/html/gpg.html

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