I might just add that despite it's manpage assertion, rsync isn't too intelligent about it at all. My (non z) testing indicated that if you re-use the same target file, after the initial run "cp" is significantly more efficient. The initial run for both is comparable as the target needs to be created. Didn't test tar as it wasn't relevant (to me) at that juncture.
Shane .... On Thu, Jul 22nd, 2010 at 3:06 AM, "Edmund R. MacKenty" wrote: > Rick pointed out that rsync and tar have options that deal with sparse > files intelligently: when they copy a sparse file, they do not write out > blocks > of all zeros. Instead, they seek past such "empty" blocks to avoid writing > to them, thus creating a sparse output file. That's how a proper Linux file > copy is done. The cp command also does that. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
