From owner-freebsd-questions@FreeBSD.ORG Sun Jul 6 15:32:11 2014 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id E705E41A for ; Sun, 6 Jul 2014 15:32:11 +0000 (UTC) Received: from relay2.tomsk.ru (mail.sibptus.tomsk.ru [212.73.124.5]) by mx1.freebsd.org (Postfix) with ESMTP id 54B582B54 for ; Sun, 6 Jul 2014 15:32:10 +0000 (UTC) X-Virus-Scanned: by clamd daemon 0.98.1 for FreeBSD at relay2.tomsk.ru Received: from admin.sibptus.tomsk.ru (account sudakov@sibptus.tomsk.ru [212.73.125.240] verified) by relay2.tomsk.ru (CommuniGate Pro SMTP 5.1.16) with ESMTPSA id 35930875 for freebsd-questions@freebsd.org; Sun, 06 Jul 2014 22:32:07 +0700 Received: from admin.sibptus.tomsk.ru (sudakov@localhost [127.0.0.1]) by admin.sibptus.tomsk.ru (8.14.7/8.14.7) with ESMTP id s66FW702046477 for ; Sun, 6 Jul 2014 22:32:07 +0700 (NOVT) (envelope-from vas@mpeks.tomsk.su) Received: (from sudakov@localhost) by admin.sibptus.tomsk.ru (8.14.7/8.14.7/Submit) id s66FW7cJ046476 for freebsd-questions@freebsd.org; Sun, 6 Jul 2014 22:32:07 +0700 (NOVT) (envelope-from vas@mpeks.tomsk.su) X-Authentication-Warning: admin.sibptus.tomsk.ru: sudakov set sender to vas@mpeks.tomsk.su using -f Date: Sun, 6 Jul 2014 22:32:07 +0700 From: Victor Sudakov To: freebsd-questions@freebsd.org Subject: Updating and displaying CMOS clock Message-ID: <20140706153206.GA46262@admin.sibptus.tomsk.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Organization: AO "Svyaztransneft", SibPTUS X-PGP-Key: http://www.dreamwidth.org/pubkey?user=victor_sudakov X-PGP-Fingerprint: 10E3 1171 1273 E007 C2E9 3532 0DA4 F259 9B5E C634 User-Agent: Mutt/1.5.21 (2010-09-15) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Jul 2014 15:32:12 -0000 Colleagues, What's the command to update the CMOS clock to the time of the kernel clock? ntpd does a good job of keeping the accurate time in the kernel clock, but from my experience, this time is not propagated to the CMOS clock which lives its own life. As a result, there is a large time skew everytime the box is rebooted, which prevents from Kerberos login until the kernel clock is synchronized. In other words, what's the FreeBSD equivalent of the Linux "hwclock --systohc" command? And no, contrary to popular belief, the correction of the CMOS clock does not happen automatically in FreeBSD even if ntpd is running. If there is a way to display the time of the CMOS (RTC) clock, I would be interested to know too. TIA. -- Victor Sudakov, VAS4-RIPE, VAS47-RIPN sip:sudakov@sibptus.tomsk.ru