Bug 399839 – app-admin/tmpwatch reports "Cannot stat file" with --fuser on sufficiently loaded system

• Product: Gentoo Linux
• Status: RESOLVED TEST-REQUEST

[Description Doug Warner 2012-01-23 14:17:12 UTC]

When running tmpwatch with --fuser on a sufficiently loaded system, it's common to get errors like this on stderr:

# tmpwatch --mtime --fuser --quiet  504 /usr/portage/distfiles
Cannot stat file /proc/10661/fd/542: No such file or directory
Cannot stat file /proc/10661/fd/549: No such file or directory
Cannot stat file /proc/10661/fd/587: No such file or directory
Cannot stat file /proc/10661/fd/593: No such file or directory

We can't send stderr to /dev/null since this would mask legitimate errors from tmpwatch.  The best solution would be to ignore this race condition in tmpwatch.

[Comment 1 Christian Faulhammer (RETIRED) 2012-02-05 13:29:57 UTC]

Which version of tmpwatch is this?

[Comment 2 Doug Warner 2012-02-06 02:27:07 UTC]

$ equery l tmpwatch
 * Searching for tmpwatch ...
[IP-] [  ] app-admin/tmpwatch-2.10.1:0


FWIW, I've seen this problem for quite some time but only recently realized it was due to fuser.

[Comment 3 Christian Faulhammer (RETIRED) 2012-02-06 20:21:52 UTC]

(In reply to comment #2)
> $ equery l tmpwatch
>  * Searching for tmpwatch ...
> [IP-] [  ] app-admin/tmpwatch-2.10.1:0


 Please try 2.10.3.

[Comment 4 Michael Watters 2012-02-17 15:33:53 UTC]

Upgrading to 2.10.3 doesn't seem to help.  There is still a race condition caused by tmpwatch trying to look at processes that no longer exist.

For example, tmpwatch produces errors like this:

Cannot stat file /proc/4892/fd/51: No such file or directory
Cannot stat file /proc/8860/fd/7: No such file or directory
Cannot stat file /proc/5474/fd/7: No such file or directory

This can be reproduced by running 

tmpwatch --mtime --fuser --quiet  504 /usr/portage/distfiles

[Comment 5 Pacho Ramos 2016-05-28 09:35:14 UTC]

Try with 2.11-r1