Am 07.08.2012 um 20:00 schrieb peter green <plugw...@p10link.net>:
> Dr. Peter Pöml wrote: >> Looking around in the tree, I see several files named "Packages" or >> "Release", thus with no versioning indication in their name, and on the >> other hand, package files with version info (including build or release >> numbering). The latter files are easy to handle for MirrorBrain, because a >> file is assumed to never change - if a package is rebuilt, the release >> counter is incremented. The "version-less" files however are more difficult >> to handle. MirrorBrain doesn't store modification times or file size for >> what it finds on mirrors. (It would have been possible to implement it that >> way, but it was decided against for performance reasons [which might not >> affect some users in fact...].) > So what does it store? just the filenames/paths? > > And how does it match files on the mirrors against files locally? does it > just use their names or does it use some other components of their paths too? > > Thanks for providing information so I know where it is and isn't safe to use > mirrorbrain. MirrorBrain stores the full path and uses that for redirection, anchored to the top-level directory of your file tree. For instance, your file tree could be locally at /var/web/download/raspbian/ and you have configured the webserver to serve this at http://downloads.raspberrypi.org/raspbian/ Mirrors will have their own local top-level dir (which doesn't matter) and serve all your files in some certain URL space like this: http://raspbian.coolspace.com/ http://ftp.bigsite.org/mirrors/raspbian/ Assume a file in a subdirectory, locally: /var/web/download/raspbian/subdir/file1 MirrorBrain will look in the database for mirrors that have "subdir/file1". That would apply to the two mirrors in the above example if they deliver file1 via http://raspbian.coolspace.com/subdir/file1 http://ftp.bigsite.org/mirrors/raspbian/subdir/file1 You don't have to worry about confusion with /anothersubdir/file1, because only the full (relative) path is used, not some part or trailing filename. Thus, you can have as many "Packages" files as you like ;) BTW, you can query MirrorBrain for mirrors of a certain file with this command: mb file ls subdir/file1 In fact, you could think of an implied slash in from of the path ("/subdir/file1"). To query for just a part of a path, a wildcard needs to be used (like "*/subdir/file1"). Peter _______________________________________________ mirrorbrain mailing list Archive: http://mirrorbrain.org/archive/mirrorbrain/ Note: To remove yourself from this mailing list, send a mail with the content unsubscribe to the address mirrorbrain-requ...@mirrorbrain.org
