yes, i`d second that. maybe you just try using metaflac to generate the appropriate list of files to sync and then feed that list to rsync.
> Gesendet: Dienstag, 02. Dezember 2014 um 08:37 Uhr > Von: "Fabian Cenedese" <cened...@indel.ch> > An: rsync@lists.samba.org > Betreff: Re: Comparing FLAC header before syncing > > At 02:24 02.12.2014, Mike Garey wrote: > >Hi all, I'd like to modify rsync to add a flag to compare the MD5 signature > >of the unencoded audio data in the header of a FLAC file to determine > >whether or not to transfer a file.  > > > >The reason being that I've got a large number of FLAC files, many of which > >are corrupted in the destination volume, but many of which are valid but the > >tags have been modified. The sizes of both the source and destination > >files are the exact same, regardless of whether they're corrupted or not. > >If I were to rsync all files based on the modification date, it would > >overwrite these valid FLAC files whose tags have been altered, which I want > >to prevent. I only want to rsync new files and files whose MD5 signatures > >don't match. > > > >If anyone could point me in the right direction of where in the source code > >I should concentrate my efforts to add this modification, it would help > >greatly. > > You'd probably get a result faster with less problems (future updates) if you > separate your logic into a single program instead of incorporating it into > rsync. > If you have a way of accessing both the source and dest then you can create > a list of files to sync and feed this to rsync with --files-from. Or you run > your > script/program on the destination, check all files and create the list which > you can then transfer to the source and let rsync run. Or you have rsync run > on the destination if you have a server on or direct access to the source. > > If you really want to change rsync you can probably look at -c (checksum) > which you may be able to adjust to use the header's checksum instead > of generating a file's checksum. But I don't know the source code. > > bye Fabi > > > > -- > Please use reply-all for most replies to avoid omitting the mailing list. > To unsubscribe or change options: > https://lists.samba.org/mailman/listinfo/rsync > Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html > -- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html