Newsgroups: comp.os.minix
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From: kjb@cs.vu.nl (Kees J Bot)
Subject: Re: FS size supported in 1.7
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Organization: Fac. Wiskunde & Informatica, VU, Amsterdam
Date: Fri, 22 Dec 1995 17:10:18 GMT
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hk@bercos.de (Helge Kruse) writes:

>In MINIX filesystem 1.5 the maximum supported FS size is 64 MByte.
>The blocknumber is a short (1..65535) and the blocksize is 1024.
>I hope MINIX 1.7 will support larger partitions. How does it make
>this? Is the change a simple change of aparameter or a conceptual
>change?

Minix 1.7 uses a new file system type that has 32 bit block numbers.
In theory this means a 4 G upper limit, but in practice one is
constrained by lack of memory, or lack of inodes (still a 16 bit inode
number.)  So mkfs has a limit of 128 Mb in 16 bit mode, and 256 Mb in 32
bit mode.  That should be enough for Minix.
--
	                        Kees J. Bot  (kjb@cs.vu.nl)
	              Systems Programmer, Vrije Universiteit Amsterdam
