NAME
	rvdcopy - copies the physical contents of one rvd pack to another

SYNOPSIS
	rvdcopy drive1 drive2 nblocks [ startblock]

DESCIPTION

	Copies nblocks (starting with startblock) 512-byte blocks
	of the rvd pack spun up on drive1 to the rvd pack spun up
	on drive2.  rvdcopy moves data in multi-block bursts;
	if the server reports a read or write error, rvdcopy
	recopies that burst one block at a time, so as to
	maximize the amount of good data copied.  As rvdcopy
	proceeds, it reports any bad blocks and it also provides
	a progress report every 100 blocks or so.  When done,
	rvdcopy provides statistics in the form:

		??? who knows????
	  something including the information: 
        packets sent & received; # of timeouts & errors.

	somehow you can get the size of the spun up pack, don't
	ask why or how...  rvdcopy does not detect if the source
	and target pack are different sizes; the user should
	insure that (startblock + nblocks) is less than or equal to
	the size of the smaller pack.

	Rvdcopy can copy any pack regardless of contents.
	???Restriction: rvdcopy is limited to copying blocks
	among the first ???65535 on a disk pack.  Is it limited?
	Is filesystems limited same amount, ja?  How find out?

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