On Tue, 2007-03-27 at 13:29 +0300, Jonathan Dieter wrote: > On Tue, 2007-03-27 at 12:05 +0200, Michael Schroeder wrote: > > On Mon, Mar 26, 2007 at 04:34:21PM -0400, seth vidal wrote: > > > 1. why are you using md5sum and not sha1sums? > > > > It checks if the md5sum of the file matches the sum from the rpm > > header. > > > > It works basically like this: The "sequence" tells applydeltarpm > > which of the files from the rpm header were used to create the > > deltarpm and the order of those files (thus the name "sequence" > > in case you wondered). makedeltarpm doesn't use all files to > > create the delta, config files and files that have the "verify" > > bit off get excluded. If you ask applydeltarpm to check if a > > deltarpm can be applied it uses this sequence to verify that all > > used files are unchanged, either by just checking the size (the > > fast method) or by checking the md5sum (like rpm does). > > The fast method makes sense if the updater has a fallback to > > fetch the complete rpm if applydeltarpm failes, as in most cases > > files are unchanged if the size is the same. > > > > Cheers, > > Michael. > > > And I changed Presto last night to use the full method, rather than the > fast method. Our fallback method is pretty lousy (exiting with an > error, working the second time yum is called), at least for the moment. > Why is that? I need to take a look at the code but there doesn't seem to be any reason why it shouldn't be able to fall back to downloading the whole package. It knows where it is. -sv -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
