cvs commit: src/usr.sbin/syslogd syslogd.c

[Pawel Jakub Dawidek]

On Fri, Mar 31, 2006 at 09:06:32AM +0000, Robert Watson wrote:
+> 
+> On Fri, 31 Mar 2006, Peter Jeremy wrote:
+> 
+> >On Thu, 2006-Mar-30 21:04:52 +0000, Christian S.J. Peron wrote:
+> >> This change allows syslogd to ignore ENOSPC space errors, so that when the
+> >> filesystem is cleaned up, syslogd will automatically start logging again
+> >> without requiring the reset. This makes syslogd(8) a bit more reliable.
+> >
+> >My sole concern with this is that this means that syslogd will keep trying to write to the full filesystem - and the kernel will log the attempts to write to a full 
+> >filesystem.  Whilst there's rate limiting in the kernel, this sort of feedback loop is undesirable.
+> 
+> What I'd like to see is an argument to syslogd to specify a maximum full level for the target file system.  Log data is valuable, but being able to write to 
+> /var/tmp/vi.recover is also important.  syslogd -l 90% could specify that sylogd should not write log records, perhaps other than an "out of space record" to a log file on 
+> a file system with >=90% capacity.  This prevents the kernel from spewing about being out of space also.  The accounting code does exactly this, for identical reasons.

One of the things I like about UFS is that it has 8% of reserved space
and when syslogd is running as root, it can still log, even when /var/
is full of users' data. Of course there should be separate /var/log/
partition, but...

In my opinion it'll be good, if we can stop logging various levels when
we hit Avail=0% and stop the rest at Avail=-4% maybe.
Maybe we should take logs only from logpriv when Avail=0%...

-- 
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd at FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!
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