Date: Thu, 14 Apr 2011 16:21:57 +0200 From: "Patrick M. Hausen" <hausen@punkt.de> To: FreeBSD Stable <freebsd-stable@FreeBSD.org> Subject: Re: ahci.ko in RELENG_8_2, what about atacontrol cap? Message-ID: <ECE071A9-AADE-411D-93A8-BD7963924C99@punkt.de> In-Reply-To: <1846D8C1-99F9-4258-A428-14E7D5CF58E1@punkt.de> References: <EFA22697-4025-4E8B-B20A-C0142926FE1F@punkt.de> <20110402094038.GA3521@icarus.home.lan> <3B6BFB01-3AC4-432B-8713-6CED09FFF9A2@punkt.de> <20110403110351.GA30312@icarus.home.lan> <4D9877E7.6050807@FreeBSD.org> <1846D8C1-99F9-4258-A428-14E7D5CF58E1@punkt.de>
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Hi, all, Am 03.04.2011 um 15:44 schrieb Patrick M. Hausen: > Am 03.04.2011 um 15:36 schrieb Alexander Motin: >> I've noticed that some RAID BIOS'es disable write cache on their disks. ata(4) enabled cache in such cases, but CAM doesn't now. I'll take care of it for ATA. For now you can manage it via `camcontrol cmd`. > > I understand. So probably my disks' WC is set to off in the > system BIOS setup - wich is changed upon boot by ata, but > not by ahci/cam. I changed the setting in the BIOS setup to "write cache enabled" and presto - write cache with ahci. Thanks for the hints, Patrick -- punkt.de GmbH * Kaiserallee 13a * 76133 Karlsruhe Tel. 0721 9109 0 * Fax 0721 9109 100 info@punkt.de http://www.punkt.de Gf: Jürgen Egeling AG Mannheim 108285
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