Copy Linux Filesystem/Check/Compare Filesystems

["Doug MacFarlane" <madmac@vauban.com>]

Team:

I will shortly need to copy about 100 gb of data from one filesystem to
another.  While cp would probably do fine, others have suggested using tar
or some other tool that is more robust for performing the copy.

Any suggestions?  Just exactly how would one tar one filesystem to another,
without the intermediate tar file?

Also, once the copy is complete, I'd love a tool that would compare the two
filesystems, including crc or md5 checksums on each file, to make sure that
they are, in fact, identical.

TIA

madmac