From owner-freebsd-questions@freebsd.org Tue Mar 28 20:07:30 2017 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 921FED217D1 for ; Tue, 28 Mar 2017 20:07:30 +0000 (UTC) (envelope-from web@3dresearch.com) Received: from smtpd.telissant.net (smtpd.telissant.net [104.225.1.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 51714DE for ; Tue, 28 Mar 2017 20:07:29 +0000 (UTC) (envelope-from web@3dresearch.com) Received: from elettra.3dresearch.com (unknown [71.112.245.98]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: elettra) by smtpd.telissant.net (Postfix) with ESMTPSA id 09889112997 for ; Tue, 28 Mar 2017 16:07:27 -0400 (EDT) Received: from elettra.3dresearch.com (localhost [127.0.0.1]) by elettra.3dresearch.com (Postfix) with SMTP id 647D69D6DE for ; Tue, 28 Mar 2017 16:07:26 -0400 (EDT) Date: Tue, 28 Mar 2017 16:06:34 -0400 From: Janos Dohanics To: FreeBSD Questions Subject: Unresponsive system Message-Id: <20170328160634.611573c82e88e1ca12d25891@3dresearch.com> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.29; amd64-portbld-freebsd10.3) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Mar 2017 20:07:30 -0000 Hello List, Earlier today, one of my servers became unresponsive: # less /var/log/messages [...] Mar 28 11:43:33 cortina pop3[4090]: Expunged 1 messages from user.[...] Mar 28 11:43:33 cortina pop3[4090]: USAGE [...] user: 0.000000 sys: 0.003032 Mar 28 11:43:33 cortina pop3[4090]: counts: retr=<1> top=<0> dele=<1> Mar 28 11:43:34 cortina pop3[3877]: login: [...].fios.verizon.net [a.b.c.d] [...] plaintext User logged in SESSIONID= Mar 28 11:43:34 cortina pop3[3877]: USAGE [...] user: 0.000000 sys: 0.002152 --> Mar 28 11:43:34 cortina pop3[3877]: counts: retr=<0> top=<0> dele=<0> --> Mar 28 11:45:30 cortina kernel: sonewconn: pcb 0xfffff80003e82cb0: pru_attach() failed Mar 28 11:45:30 cortina kernel: sonewconn: pcb 0xfffff80003e82cb0: pru_attach() failed Mar 28 11:45:39 cortina kernel: sonewconn: pcb 0xfffff80003e82570: pru_attach() failed Mar 28 11:45:39 cortina kernel: sonewconn: pcb 0xfffff80003e82740: pru_attach() failed Mar 28 11:45:41 cortina kernel: sonewconn: pcb 0xfffff80003e82cb0: pru_attach() failed Mar 28 11:45:41 cortina last message repeated 3 times Mar 28 11:45:42 cortina kernel: sonewconn: pcb 0xfffff80003e82570: pru_attach() failed Mar 28 11:45:42 cortina kernel: sonewconn: pcb 0xfffff80003e82740: pru_attach() failed Mar 28 11:45:44 cortina kernel: sonewconn: pcb 0xfffff80003e82570: pru_attach() failed Mar 28 11:45:45 cortina kernel: sonewconn: pcb 0xfffff80003e82570: pru_attach() failed Mar 28 11:45:45 cortina kernel: sonewconn: pcb 0xfffff80003e82740: pru_attach() failed Mar 28 11:45:51 cortina kernel: sonewconn: pcb 0xfffff80003e82570: pru_attach() failed Mar 28 11:45:54 cortina kernel: sonewconn: pcb 0xfffff80003e82570: pru_attach() failed Mar 28 11:45:59 cortina kernel: sonewconn: pcb 0xfffff80003e82cb0: pru_attach() failed Mar 28 11:46:02 cortina last message repeated 3 times Mar 28 11:46:03 cortina kernel: sonewconn: pcb 0xfffff80003e831d0: pru_attach() failed Mar 28 11:46:18 cortina last message repeated 3 times Mar 28 11:46:19 cortina kernel: sonewconn: pcb 0xfffff80003e82cb0: pru_attach() failed Mar 28 11:46:19 cortina kernel: sonewconn: pcb 0xfffff80003e82cb0: pru_attach() failed Mar 28 11:46:21 cortina kernel: sonewconn: pcb 0xfffff80003e82570: pru_attach() failed Mar 28 11:46:23 cortina kernel: sonewconn: pcb 0xfffff80003e831d0: pru_attach() failed Mar 28 11:46:24 cortina kernel: sonewconn: pcb 0xfffff80003e82740: pru_attach() failed Mar 28 11:46:24 cortina kernel: sonewconn: pcb 0xfffff80003e82570: pru_attach() failed Mar 28 11:46:28 cortina kernel: sonewconn: pcb 0xfffff80003e831d0: pru_attach() failed Mar 28 11:46:30 cortina kernel: sonewconn: pcb 0xfffff80003e82cb0: pru_attach() failed Mar 28 11:46:33 cortina kernel: sonewconn: pcb 0xfffff80003e831d0: pru_attach() failed Mar 28 11:46:38 cortina kernel: sonewconn: pcb 0xfffff80003e82570: pru_attach() failed Mar 28 11:46:38 cortina kernel: sonewconn: pcb 0xfffff80003e831d0: pru_attach() failed Mar 28 11:49:19 cortina syslogd: kernel boot file is /boot/kernel/kernel --> It's notable that there were no entries in /var/log/messages for almost 2 minutes before the sonewconn error happened. The system is FreeBSD 11.0-STABLE #0 r314885 amd64. It is mostly used to run Cyrus, Postfix, Amavisd, Clamd. Kernel is not customized, except for "ident". Could this problem be related to the additional swap space provided by a swapfile? # cat /etc/fstab # Device Mountpoint FStype Options Dump Pass# /dev/ada0p2 none swap sw 0 0 /dev/ada0p3 / ufs rw 1 1 /dev/ada0p4 none swap sw 0 0 md0 none swap sw,file=/swapfile,late 0 0 # swapinfo -hm Device 1M-blocks Used Avail Capacity /dev/ada0p2 256 241M 15M 94% /dev/ada0p4 750 290M 460M 39% /dev/md0 4096 289M 3.7G 7% Total 5102 820M 4.2G 16% I'd appreciate your advice. -- Janos Dohanics