[is the glibc maintainers mailing list still the correct venue?] Hi,
I really appreciate your help, it is insightful. On Wed, Jul 06, 2022 at 04:57:47PM -0400, Carlos O'Donell wrote: > On Wed, Jul 6, 2022 at 10:10 AM Marc Haber <mh+debian-gl...@zugschlus.de> > wrote: > > On Wed, Jul 06, 2022 at 09:29:22AM -0400, Carlos O'Donell wrote: > > > You can verify that nscd is catching the cases you care about by running > > > it in '--debug' mode to let you see the cache invalidation. > > > > I regret to say that I don't use nscd in any of my installations. My > > last superficial contact to nscd was like two decades ago. > > > > Would it help with an educated guess to install nscd, let it run in > > --debug mode, run our test suite and compare nscd's output with the > > output it generates running our test suite without the explicit > > invalidation? > > That sounds like a good approach. You should be able to compare > the logs of both runs looking for the missing explicit invalidation > and you should see that nscd detects the database changes. I have uploaded two typescripts from nscd -d with debug_level 0 to https://q.bofh.de/~mh/stuff/ - one with the invalidation code in adduser in place, one with the invalidation code removed. Both logs show the adduser test suite running. Unfortunately, that doesnt look like I can make any sense from that. I see nscd seeing changes to /etc/passwd and /etc/group, so I guess that what we do is correctly reflected by nscd even without the explicit invalidation. Additionally, I guess that adduser is invalidating caches that don't need invalidation (logs showing explicit invalidations without the software noticing changed files). I am wondering about the following though: monitored file `/etc/group` was deleted, removing watch monitored file `/etc/group` was created, adding watch without seeing actual caches being invalidated. Could it be possible that /etc/group is rewritten and renamed and that nscd is only watching for changes? Or am I missing something here? Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Leimen, Germany | lose things." Winona Ryder | Fon: *49 6224 1600402 Nordisch by Nature | How to make an American Quilt | Fax: *49 6224 1600421
