I am asking this question, because move of the rpmdb into /usr is not conceptual (and I admit that even in the light of my question above, the /var is not really conceptual). So has anybody thought about more generic concept for rpmdb, which would cover the mountable directories?
Vít Dne 12. 01. 22 v 10:05 Zbigniew Jędrzejewski-Szmek napsal(a):
On Mon, Jan 10, 2022 at 02:53:52PM -0700, Chris Murphy wrote:Should /usr be independently portable? And is that with a version matched /opt, or can there be mix and match revisions of /usr and /opt?We have three similar locations: /usr (system vendor tree), /usr/local (admin non-packages installations), /opt (external vendor tree). In other words, both /usr and /opt are for packages, but from different sources. As an admin, you'd want to treat both package types the same, and e.g. roll them back together. So having a separate tree for /opt doesn't make much sense. [At some point in the future] /opt should be renamed to /usr/opt and symlinked for backwards compat.If /usr is to be truly portable and have e.g. 'rpm query, verify, remove, reinstall' work as expected, you need the metadata (the database) representing its state to always come along for the ride. Either the database is already in /usr, or you have to make sure /usr and /state are inseparable. If /usr and /state are inseparable, and if rpm can also describe anything in /etc or /var or /opt, then all or part of those directories are also inseparable from /state. And thus /usr. So I think /state doesn't help.Yeah, /state doesn't help with anything. It'd be just some part of the whole system state, without a clear separation of why this particular subset. My preference: /usr/lib/sysimage/rpm > /var/lib/rpm > /state.To what degree do rpm and dnf intend to touch locations outside of /usr *and care* about tracking those changes?Traditionally, packages installed all kinds of files all over the place. But we're slowly and painfully moving towards the model where: 1. packages are only allowed to install under /usr, /var, and /etc. (Or under /opt, but I'd want to move that to /usr/opt…) 2. packages must support /var/cache being wiped at any time, and most packages support anything under /var being wiped at any time. 3. systemd and other projects are trying to only use /etc for local admin state, and support "factory reset" by wiping /etc and /var. So although rpm manages files under /var and /etc, it is not to the same extent as /usr. In this light it makes a lot of sense to hold the rpmdb state under /usr/ somewhere. The exact subdirectory doesn't really matter, it's just a matter of convention, so obviously we want to follow what opensuse and others are already using. Zbyszek _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
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