Re: [TUHS] Irwin 285

In message: <20100121221523.GL9956(a)bitmover.com> Larry McVoy <lm(a)bitmover.com> writes: : On Thu, Jan 21, 2010 at 04:36:21PM -0500, lyricalnanoha wrote: : > On Thu, 21 Jan 2010, Larry McVoy wrote: : > : >>>> If you aren't backing up with a crc then you are doing it wrong. : >>> : >>> True, but CRC does not buy you much if the media are fubared enough to be : >>> largely unreadable. : >> : >> We compare the CRC against previous backups. A table of : >> : >> pathname, size, mtime, CRC : >> : >> you compare all the ones that are the same and flag the ones that differ : >> only in CRC. : > : > Sounds a lot like SFV files. : : Yeah, except that it works when the files don't have the CRC's, i.e., : it works for all files unchanged since the last backup. It is basically what rsync does over the network... Warner _______________________________________________ TUHS mailing list TUHS(a)minnie.tuhs.org https://minnie.tuhs.org/mailman/listinfo/tuhs