Red Hat Bugzilla – Bug 473343
nscd fogets hosts upon hibernate/thaw cycle
Last modified: 2009-12-18 01:59:33 EST
Description of problem:
nscd "forgets" hosts on hibernate/thaw cycle. Various programs fail etc.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Hibernate a machine, then thaw.
2. Use a program such as Evo or screensaver to contact a host on the network.
Programs report that hosts are not there.
This worked in F-9.
service nscd stop
rm -f /var/db/nscd/*
service nscd start
I first noticed that with gnome-screensaver authentication that pops up on thaw. Then I realized that Evo cannot get mail, reporting that the host isn't there.
This also helps:
# nscd --invalidate=hosts
It works just fine for me.
Run nscd in the foreground using
nscd -d -d -d
and show the output.
Isn't that a bummer. When you want the darn thing to fail - it doesn't. I haven't seen this for almost two weeks now...
The moment I said I didn't see it for two weeks, it happened. I'll attach first the strace output of the running nscd and also debug output of the 'ncsd -d -d -d', which I started after stopping the running nscd with 'service nscd stop'. Hope it helps.
Created attachment 326416 [details]
Strace of the failing nscd
This one was stated with 'service nscd start' before the system was hibernated. In other words, it was just a normal startup, no debugging at all turned on.
Created attachment 326417 [details]
Debug output of nscd
This one was started with nscd -d -d -d and output captured in this file, as instructed. Note that the user was in the end (after a few tries) able to supply the password on the gnome-screensaver lock screen successfully. I'm guessing nscd recovered from the failed condition eventually...
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