On Mon, 31 Jan 2022, Paul Koning via cctalk wrote:
Yes, RT-11 is a somewhat unusual file system in that it doesn't just
support contiguous files -- it supports ONLY contiguous files. That
makes for a very small and very fast file system.
The only other example I know of that does this is the PLATO file system.
The UCSD P-System had contiguous files. If small files had been deleted,
so that space was fragmented, you had to run a "CRUNCH" program to
defragment it. Directory entries had the starting location and length.
As for partition vs. file, the two differences I see are: (1) layering: the
partition is below the file system. (2) partitions are originally entirely
static (set at creation and never changed) and even later on changed only
rarely and typically with substantial technical difficulty.
paul
--
Fred Cisin ci...@xenosoft.com
XenoSoft http://www.xenosoft.com
2245 Carquinez Avenue (510) 234-3397
ElCerrito, CA 94530
