cpio and unallocated blocks

[Rick Pasotto]

What is the correct behavior for cpio regarding blocks claimed
but not actually used?  That is, if a file is created, seeked to
1-meg, a single byte written and then copied using cpio (-p or
-o and then -i) should the resultant file actually use 1-meg worth
of file system blocks or only the number allocated to the original
file?

A recent upgrade to SYS V.3 from V.2 seems to have altered the behavior.

A mail response would be appreciated as I don't regularly read this
group.

Rick Pasotto
fwp at unccvax.uncc.edu