tar fs copy

[P.L.Sullivan]

In article <239 at drivax.UUCP> alan at drivax.UUCP (Alan Fargusson) writes:
>> How big is the pipe?  I read somewhere pipes use the root file system,
>
>Pipes use an inode on the root file system. They are limited to 5120 bytes
>on System V, and 4096 on some other systems, by code in the kernel.

On System V, pipes are 10 physical blocks long, with the 11th thru 13th
block pointers reserved for pipe activity descriptions.  This makes pipes
10240 bytes max on systems with 1k byte physical blocks (e.g. 3b2 and 3b20), 
20480 bytes max on those with 2k byte physical blocks (e.g. 3b5 and 3b15).

Guy Harris posted a reply to the above article, but didn't mention this - 
is this peculiar to AT&T hardware??

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Pat Sullivan - {akgua|akguc|ihnp4}!soessx!pls - voice 404-257-7382