[TUHS] /dev/drum

Warner Losh imp at bsdimp.com
Tue Apr 24 08:09:47 AEST 2018

On Mon, Apr 23, 2018 at 4:01 PM, Noel Chiappa <jnc at mercury.lcs.mit.edu>
> No, in V6 filesystems, block numbers (in inodes, etc - also the file system
> size in the superblock) were only 16 bits, so a 50MB disk (100K blocks)
> had to
> be split up into partitions to use it all. True of the RP03/04 in V6 too
> (see
> the man page above).

Venix 86 2.0 has a daddr_t of 16-bit as well. Venix is V7 based and is
limted to 32MB. It looks like the filesystem includes this limitation as
well. The winchester driver doesn't have the partitioning trick that the r*
drivers form the pdp-11, it seems.

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