From mboxrd@z Thu Jan 1 00:00:00 1970 From: lm@bitmover.com (Larry McVoy) Date: Thu, 21 Jan 2010 14:15:23 -0800 Subject: [TUHS] Irwin 285 In-Reply-To: References: <20100121195619.GE25687@freebie.xs4all.nl> <20100121195818.GF9956@bitmover.com> <20100121200034.GG25687@freebie.xs4all.nl> <20100121201125.GG9956@bitmover.com> <46b366131001211226v1a133901mefa41b3258a5b173@mail.gmail.com> <20100121204157.GI25687@freebie.xs4all.nl> <20100121204429.GH9956@bitmover.com> <20100121210020.GK25687@freebie.xs4all.nl> <20100121210155.GJ9956@bitmover.com> Message-ID: <20100121221523.GL9956@bitmover.com> 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. -- --- Larry McVoy lm at bitmover.com http://www.bitkeeper.com _______________________________________________ TUHS mailing list TUHS at minnie.tuhs.org https://minnie.tuhs.org/mailman/listinfo/tuhs