Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261491AbUJZVuo (ORCPT ); Tue, 26 Oct 2004 17:50:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261496AbUJZVun (ORCPT ); Tue, 26 Oct 2004 17:50:43 -0400 Received: from smtp08.auna.com ([62.81.186.18]:25998 "EHLO smtp08.retemail.es") by vger.kernel.org with ESMTP id S261491AbUJZVuQ convert rfc822-to-8bit (ORCPT ); Tue, 26 Oct 2004 17:50:16 -0400 Date: Tue, 26 Oct 2004 21:50:14 +0000 From: "J.A. Magallon" Subject: Setting 32bit IO on SATA drives To: Lista Linux-Kernel X-Mailer: Balsa 2.2.5 Message-Id: <1098827414l.6518l.0l@werewolf.able.es> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Disposition: inline Content-Transfer-Encoding: 7BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1712 Lines: 57 Hi all... I have a bunch of SATA drives on a RAID-5 setup. I was investigating the usual things on ide disks to optimize performance, with hdparm. The defalt settings, as they boot: sata_promise version 1.00 ACPI: PCI interrupt 0000:00:07.0[A] -> GSI 17 (level, low) -> IRQ 177 ata1: SATA max UDMA/133 cmd 0xF0802200 ctl 0xF0802238 bmdma 0x0 irq 177 ... ata1: dev 0 cfg 49:2f00 82:7c6b 83:7f09 84:4003 85:7c69 86:3e01 87:4003 88:407f ata1: dev 0 ATA, max UDMA/133, 490234752 sectors: lba48 ata1: dev 0 configured for UDMA/133 nada:~# lsscsi -l [0:0:0:0] disk ATA Maxtor 7Y250M0 YAR5 /dev/sda state=running queue_depth=1 scsi_level=6 type=0 device_blocked=0 timeout=30 nada:~# hdparm /dev/sda /dev/sda: HDIO_GET_MULTCOUNT failed: Operation not supported IO_support = 0 (default 16-bit) readonly = 0 (off) readahead = 256 (on) geometry = 30515/255/63, sectors = 251000193024, start = 0 nada:~# hdparm -c /dev/sda /dev/sda: IO_support = 0 (default 16-bit) nada:~# hdparm -c1 /dev/sda /dev/sda: setting 32-bit IO_support flag to 1 HDIO_SET_32BIT failed: Invalid argument IO_support = 0 (default 16-bit) How can I make 32bit IO active ? TIA -- J.A. Magallon \ Software is like sex: werewolf!able!es \ It's better when it's free Mandrakelinux release 10.1 (Community) for i586 Linux 2.6.9-jam1 (gcc 3.4.1 (Mandrakelinux 10.1 3.4.1-4mdk)) #4 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/