On Sun, Jan 16, 2022 at 5:05 PM Chris Adams <linux@xxxxxxxxxxx> wrote: > > Once upon a time, Ben Cotton <bcotton@xxxxxxxxxx> said: > > == Benefit to Fedora == > > > > * The RPM database primarily describes the state of `/usr`. Storing > > the databases in `/usr` will more easily facilitate OS rollback, > > without affecting `/var`. > > Rolling back to the start... this statement is only marginally true. > And "primarily" is a hand-wavy hedge that just pretends the rest doesn't > matter. > > Ony my Fedora 35 desktop, I have things in RPM under a lot of top-level > directories: > > $ rpm -qla | grep '^/.*/' | cut -d/ -f2 | sort | uniq -c > 99 boot > 2998 etc > 14792 lib > 43 lib64 > 97 opt > 5 root > 43 run > 10 sbin > 442175 usr > 2036 var > > Some of those are RPMs that should probably be updated, but some of that > won't go away. There's important stuff in /var and /etc, and even for > the stuff that could be blown away and recreated, most programs aren't > set up (or don't have permission) to recreate their directories. I'm not expecting to do filesystem rollbacks to revert Firefox or SQLite. I expect if I have some kind of boot or startup problem, the system is a candidate for a rollback. In such a failure, I haven't run any other programs yet that may have upgraded a database. Could modification to something in /etc result in startup failure? Yep. Is a full system rollback really called for here? It'll work, but it's a hammer. So maybe services need to learn to be a little suspicious of /etc configs, and fail safe? Maybe system critical items should be able to fall back to /usr/etc? -- Chris Murphy _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx 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@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
