Hello. I think I know how to get rid of obsolete packages from DebTorrent's cache if it is placed in the same filesystem the APT's cache is and if apt-get clean hasn't been executed lately (if it had, some fresh packages may be removed with the following method).
Step I Uncomment entries (you want to keep packages from) in /etc/apt/sources.list and execute: #apt-get update Step II Now we need packages in DebTorrent's cache to be hardlinked to files in APT's cache. there are couple of methods for doing that. Some were/are discussed at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=464386#25 method I (remember: both caches on the same filesystem only!) #if ! [ -f /usr/share/fslint/fslint/findup ];then \ apt-get install fslint;fi && /usr/share/fslint/fslint/findup -m \ /var/cache/debtorrent /var/cache/apt/archives This method is rather slow and requires to get a fslint package. Maybe someone knows how to use fdupes (IMO faster) to achieve the same goal. method II (if debtorrent is the only method of obtaining packages) #apt-get clean #ln /var/cache/debtorrent/*/pool/*/*/*/*.deb /var/cache/apt/archives Does not work with packages which names contain colon (see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=464386#50 for details). It generates needless hardlinks in APT's cache instead. Likely to work in future. I've writen a workaround, but then I realised it's useless, because package files in DebTorrent's cache do not contain colons or anything indicating there is a colon in the name of relevant file in APT's cache. method III The probable future solution to wishlist item #464386. Step III APT knows which packages are in repositories, so let it remove these, which are not. #apt-get autoclean Now only packages that are available to be downloaded are left in APT's cache. They are hardlinked to files in DebTorrent's cache so their hardlink count is 2 (or more). Package Files in Debtorrent's cache which do not have other hardlinks, are not available to fetch. If the previos step went good we can safely (well, I'm not sure about it, as I don't know how DebTorrent reacts to such changes, but I didn't noticed anything strange after I did that) remove them as obsolete. #rm `find /var/cache/debtorrent/*/pool/*/*/*/*.deb -links -2` This method will only work for files which only hardlinks were in DebTorrent's and APT's cache before this step. I hope this will inspire someone to find a more universal solution. -- Sorry for my English. Regards from Poland Mateusz "Old" Poszwa
