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`. >=20 > 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 --=20 punkt.de GmbH * Kaiserallee 13a * 76133 Karlsruhe Tel. 0721 9109 0 * Fax 0721 9109 100 info@punkt.de http://www.punkt.de Gf: J=FCrgen Egeling AG Mannheim 108285
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