From owner-freebsd-current@FreeBSD.ORG Sun Jul 25 01:42:54 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 85DDD16A4CE; Sun, 25 Jul 2004 01:42:54 +0000 (GMT) Received: from cain.gsoft.com.au (cain.gsoft.com.au [203.31.81.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id 74B6343D4C; Sun, 25 Jul 2004 01:42:51 +0000 (GMT) (envelope-from doconnor@gsoft.com.au) Received: from inchoate.gsoft.com.au (localhost [127.0.0.1]) (authenticated bits=0) by cain.gsoft.com.au (8.12.11/8.12.10) with ESMTP id i6P1glkF094076; Sun, 25 Jul 2004 11:12:48 +0930 (CST) (envelope-from doconnor@gsoft.com.au) From: "Daniel O'Connor" To: freebsd-current@freebsd.org Date: Sun, 25 Jul 2004 11:12:46 +0930 User-Agent: KMail/1.6.2 References: <1090718450.2020.4.camel@illusion.com> In-Reply-To: <1090718450.2020.4.camel@illusion.com> MIME-Version: 1.0 Content-Disposition: inline Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message-Id: <200407251112.46183.doconnor@gsoft.com.au> X-Spam-Score: -4.6 () CARRIAGE_RETURNS,IN_REP_TO,MIME_LONG_LINE_QP,PGP_SIGNATURE,QUOTED_EMAIL_TEXT,REFERENCES,SPAM_PHRASE_00_01,USER_AGENT,USER_AGENT_KMAIL X-Scanned-By: MIMEDefang 2.16 (www . roaringpenguin . com / mimedefang) cc: current@freebsd.org cc: bugghy Subject: Re: magic sysrq keys functionality X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 25 Jul 2004 01:42:54 -0000 =2D----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Sun, 25 Jul 2004 10:50, bugghy wrote: > Does the FBSD kernel have a functionality similar to linux 2.4's > MAGIC_SYSRQ. I'd like to remount my filesystems readonly (sync and > reboot) after a crash if possible. If you have a panic then it will reboot (may or may not be straight away=20 depending on what kernel options you have) I think -current as of a few days ago nolonger syncs your disk on panic=20 because it can cause more problems than it solves. (ie a panic usually happens when some internal state is hosed which means=20 writing to the disk is potentially dangerous) =2D --=20 Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C =2D----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFBAxAW5ZPcIHs/zowRAs/HAJ9yZViAnfdj6X14QhY3KfxWm3PUlgCdHtCu IryyDmf4CkSfSc1RDsM5rzI=3D =3DlDIA =2D----END PGP SIGNATURE-----