From owner-freebsd-stable Tue Jan 29 12:35: 0 2002 Delivered-To: freebsd-stable@freebsd.org Received: from netau1.alcanet.com.au (ntp.alcanet.com.au [203.62.196.27]) by hub.freebsd.org (Postfix) with ESMTP id EF23C37B416 for ; Tue, 29 Jan 2002 12:34:55 -0800 (PST) Received: from mfg1.cim.alcatel.com.au (mfg1.cim.alcatel.com.au [139.188.23.1]) by netau1.alcanet.com.au (8.9.3 (PHNE_22672)/8.9.3) with ESMTP id HAA04115; Wed, 30 Jan 2002 07:34:53 +1100 (EDT) Received: from gsmx07.alcatel.com.au by cim.alcatel.com.au (PMDF V5.2-32 #37645) with ESMTP id <01KDOA9PMQN45IJZAI@cim.alcatel.com.au>; Wed, 30 Jan 2002 07:35:04 +1100 Received: (from jeremyp@localhost) by gsmx07.alcatel.com.au (8.11.6/8.11.6) id g0TKYo183978; Wed, 30 Jan 2002 07:34:50 +1100 Content-return: prohibited Date: Wed, 30 Jan 2002 07:34:50 +1100 From: Peter Jeremy Subject: Re: Strange lock-ups during backup over nfs after adding 1024M RAM In-reply-to: <1931130530386.20020128130947@ur.ru>; from sg@ur.ru on Mon, Jan 28, 2002 at 01:09:47PM +0500 To: Sergey Gershtein Cc: freebsd-stable@FreeBSD.ORG Mail-Followup-To: Sergey Gershtein , freebsd-stable@FreeBSD.ORG Message-id: <20020130073449.B78919@gsmx07.alcatel.com.au> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline User-Agent: Mutt/1.2.5i References: <20020126204941.H17540-100000@resnet.uoregon.edu> <1931130530386.20020128130947@ur.ru> Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 2002-Jan-28 13:09:47 +0500, Sergey Gershtein wrote: > It was surprising to me that when >everything is locked-up you can still type on the keyboard, switch >consoles (alt-F1..Alt-Fn), but not log in or even reboot the system >with ctrl-alt-del. It just ignores ctrl-alt-del, but allowes to type, >scroll the console with arrow keys after pressing scrollLock, etc. That suggests that the kernel is still running happily but something has deadlocked. Compile and run a kernel with "options DDB". When it locks up, use Ctrl-Alt-Esc to enter DDB and try "ps" - this will tell you what processes are running/blocked. (Read ddb(4) for more details). >It was nmbd that continued to answer its queries and was able to write >to log file. All other log files including /var/log/cron and web >server logs stopped at the time of lock-up. nmbd writes direct to files. cron writes via syslogd. Apache writes direct, but other WEB servers may differ. Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message