From owner-freebsd-hackers@FreeBSD.ORG Mon May 2 12:31:35 2005 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7218516A4CF for ; Mon, 2 May 2005 12:31:35 +0000 (GMT) Received: from mxsf19.cluster1.charter.net (mxsf19.cluster1.charter.net [209.225.28.219]) by mx1.FreeBSD.org (Postfix) with ESMTP id F2DB543D39 for ; Mon, 2 May 2005 12:31:34 +0000 (GMT) (envelope-from c0ldbyte@myrealbox.com) Received: from mxip13.cluster1.charter.net (mxip13a.cluster1.charter.net [209.225.28.143])j42CVXci028195 for ; Mon, 2 May 2005 08:31:33 -0400 Received: from 24-247-253-134.dhcp.aldl.mi.charter.com (HELO eleanor.us1.wmi.uvac.net) (24.247.253.134) by mxip13.cluster1.charter.net with ESMTP; 02 May 2005 08:31:33 -0400 X-Ironport-AV: i="3.92,144,1112587200"; d="scan'208"; a="1061122819:sNHT95806176" Date: Mon, 2 May 2005 12:31:28 +0000 (UTC) From: c0ldbyte To: Steven Hartland In-Reply-To: <001701c54ecc$921546d0$b3db87d4@multiplay.co.uk> Message-ID: <20050502123018.U72118@eleanor.us1.wmi.uvac.net> References: <007901c54ec0$14bb3e30$b3db87d4@multiplay.co.uk> <001c01c54ec4$1f58d880$b3db87d4@multiplay.co.uk> <001701c54ecc$921546d0$b3db87d4@multiplay.co.uk> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed cc: freebsd-hackers@freebsd.org cc: Kris Kennaway Subject: Re: 5.4-STABLE corrupting fs on shutdown -p now? X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 02 May 2005 12:31:35 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Mon, 2 May 2005, Steven Hartland wrote: > Kris Kennaway wrote:: >>> Surely thats what the buffer sync is doing. Watching the console both >>> these actions appear to be doing identical things but the end results >>> are quite different :( buffers are always under 5 usually 2 and its not >>> like there's been a great deal of activity. The last test I did was just a >>> boot, login, shutdown ( result was / not clean but all the others ok ). >> >> Modern IDE drives sometimes lie about having finished writing out the >> data, when in fact it's still only in cache. You should be able to >> disable this behaviour to test (try the BIOS). > > I have a "HDD Post Write Buffer" in the BIOS according to the MB manual > although the disks aren't connected to the MB controllers they are on RAID 5 > set off a PCI-X card. Will give it a go tomorrow ( drag the monitor > back to the rack ). Will this have any performance penalties? I could > just avoid using shutdown -p but it seems a bit dodgy what its doing. > If this machine where miles away without remote console it would have > caused major amounts of pain. > > Steve > Why would you use shutdown -p on a remote machine anyway. I could see possibly a shutdown -r but -p come on. - -- ( When in doubt, use brute force. -- Ken Thompson 1998 ) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) Comment: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xF7DF979F Comment: Fingerprint = D1DC 0AA4 1C4E EAD4 24EB 7E77 B261 50BA F7DF 979F iD8DBQFCdh2ksmFQuvffl58RAmIGAJ9vc33q+QOAf8dSQvGB4bb5fMIB3QCdElTv 0Ih2mcy2eOMAEvb+ObhX2Pw= =N5SZ -----END PGP SIGNATURE-----