On Wed, 20 Mar 2013, Laszlo Boszormenyi (GCS) wrote: > On Tue, 2013-03-19 at 15:59 -0700, Sage Weil wrote: > > On Tue, 19 Mar 2013, Laszlo Boszormenyi (GCS) wrote: > > > On the other hand, 'dpkg --purge' is to remove everything the package > > > has installed and/or generated. This includes debconf answers as well. > > > With other words, purge is used to make the system totally clean of the > > > package. As such, if the sysadmin install the package again, all debconf > > > questions will be asked again and all generated files will be generated > > > again from scratch. > > > > I understand that part, but the policy isn't very clear about files that > > are not part of the package but are generated as a result of the package > > being installed (i.e., user data). > Forgive me, I just learnt English and my wording may not be that clear > for a natural speaker. > > > As a point of comparison, mysql removes the config files but not > > /var/lib/mysql. > As I remember, MySQL asks if /var/lib/mysql/ should be purged or not; I > may mix with an other (database related) package. > > > The question is, is that okay/typical/desireable/recommended/a bad idea? > I can rephrase my words. Purge removes the (binary) package files, its > configuration and logs (its generated files). To emphasis, user files > are _not_ fall into this category and must remain as-is, _intact_. > Some packages writes a console message that 'your files remain at xxx, > they were not removed' on purge. Others just leave the dpkg warning > "directory not empty so not removed" which means user files may have > left there and that may be the reason the directory is not empty. > I'm in a rush, but hopefully will be able to note policy parts in the > afternoon (CET). Thanks, Laszlo, that's exactly what I was after! Sorry for the confusing exchange. :) Sounds like in this case, the fix is simply to leave /var/lib/ceph untouched. We'll need to update teuthology ceph.py and nuke to clean up /var/lib/ceph (for qa runs), and I think we should add a ceph-deploy 'purgedata' command to clean out /var/lib/ceph on a given host. Thanks! sage -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
