Date: Fri, 13 Feb 2015 10:44:43 +0200 From: Konstantin Belousov <kostikbel@gmail.com> To: "Matthew D. Fuller" <fullermd@over-yonder.net> Cc: kib@freebsd.org, freebsd-threads@freebsd.org Subject: Re: Troubles with BIND + r276630 (/r277317 MFC) Message-ID: <20150213084443.GJ34251@kib.kiev.ua> In-Reply-To: <20150212225909.GB15127@over-yonder.net> References: <20150212225909.GB15127@over-yonder.net>
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On Thu, Feb 12, 2015 at 04:59:09PM -0600, Matthew D. Fuller wrote: > I've been setting up a stable/10 system (currently r278451, ~early > this week), and had some disturbing troubles out of BIND (net/bind910, > but also tested bind99). Sporadically, on restart, I get errors like > > > Feb 12 10:42:37 dns named[4071]: dns_master_load: /usr/local/etc/namedb/master/empty.db:1: isc_lex_gettoken() failed: I/O error > Feb 12 10:42:37 dns named[4071]: dns_master_load: /usr/local/etc/namedb/master/empty.db:1: I/O error > Feb 12 10:42:37 dns named[4071]: zone 112.100.in-addr.arpa/IN: loading from master file /usr/local/etc/namedb/master/empty.db failed: I/O error > Feb 12 10:42:37 dns named[4071]: zone 112.100.in-addr.arpa/IN: not loaded due to errors. > > > and similar. Nothing wrong with the files, and it's wildly > inconsistent. Easy to reproduce; just hammering 'service named > restart' while tail -f'ing the messages log will show some startups > going problem-free, while others will get random errors in random > files. I can also reproduce it on my -CURRENT workstation (r278359, > ~late last week), but not on several stable/10 systems of late-Dec > vintage. > > In some testing on the -CURRENT box, if I build libc/libthr as of > r276629 and do LD_LIBRARY_PATH hackery (and obviously not the > 'service' wrapper) to use them, I can kick the reload without ever > getting troubles (tried at least a hundred times). Going to 276630, > or using the system libs, it'll happen sporadically (maybe once a > dozen or so on average?). > > > So far, I haven't seen anything odd in anything but BIND. I was > running a mid-Jan -CURRENT before this for a couple weeks too, so > there should have been time for Firefox to throw a hissy fit or > something, but no hint of trouble. So it's not clear whether the > problem is in the libc/libthr changes or in BIND 9.9 and 9.10, but > certainly something between the two is unhappy... Start with ktrace/kdump around the place where the error is thrown out. Does 'reload' involves full process restart, or only reinitialization of the existing program ?help
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