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Fix ffs limits.

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Submitted by: bruce
This commit is contained in:
Wolfram Schneider 1998-09-06 10:53:07 +00:00
parent 95438e28e7
commit d12eb987d4
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=3468
1 changed files with 9 additions and 4 deletions
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13
FAQ/install.sgml
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@ -1,4 +1,4 @@
<!-- $Id: install.sgml,v 1.9 1998-08-18 23:26:50 dwhite Exp $ -->
<!-- $Id: install.sgml,v 1.10 1998-09-06 10:53:07 wosch Exp $ -->
<!-- The FreeBSD Documentation Project -->
<sect>
@ -542,11 +542,16 @@ disk wd2 at wdc1 drive 1 # change from wd3 to wd2
has been tested; you generally can't buy i386 PCs that can support
much more than that.
<p>For filesystems, the maximum theoretical limit is 8 terabytes. In
practice, there is a soft limit of 1 terabyte, but with modifications
<p>For ffs filesystems, the maximum theoretical limit is 8 terabytes
(2G blocks), or 16TB for the default block size of 8K.
In practice, there is a soft limit of 1 terabyte, but with modifications
filesystems with 4 terabytes are possible (and exist).
<p>The maximum size of a single file is 2 gigabytes.
<p>The maximum size of a single ffs file is approximately 1G blocks
(4TB) if the block size is 4K, else approximately
2G blocks. Files with holes may be larger than the filesystem.
Bugs in the filesystem code actually limit the maximum file size
to approximately (blocksize / 4)**2 blocks.
</sect>