From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Schumacher Subject: Megaraid module won't detect logical disks on a CERC ATA100/4ch Date: Mon, 23 Jan 2006 11:27:56 -0900 Message-ID: <43D53C4C.2090002@aptalaska.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from larry.aptalaska.net ([64.186.96.3]:57741 "EHLO larry.aptalaska.net") by vger.kernel.org with ESMTP id S932472AbWAWU2D (ORCPT ); Mon, 23 Jan 2006 15:28:03 -0500 Received: from [192.168.98.9] (rdbck-static-287.palmer.mtaonline.net [64.4.232.33]) (authenticated bits=0) by larry.aptalaska.net (8.13.5/8.13.5) with ESMTP id k0NKRuZq002253 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 23 Jan 2006 11:27:57 -0900 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org I have had this problem for a while and it's still unresolved. Linux fails to detect logical disks on any kernel past 2.4.27 which uses the following driver: Statistical Information for this controller pend_cmds = 0 IO and error counters not compiled in driver. root@jerry:/var/log# cat /proc/megaraid/hba0/config v2.10.3 (Release Date: Thu Apr 8 16:16:05 EDT 2004) CERC ATA100/4ch Controller Type: 438/466/467/471/493/518/520/531/532 Controller Supports 40 Logical Drives Controller capable of 64-bit memory addressing Controller is not using 64-bit memory addressing Base = f89c3000, Irq = 17, Initial Logical Drives = 1, Channels = 4 Version =6.62:1.03, DRAM = 16Mb Controller Queue Depth = 254, Driver Queue Depth = 126 support_ext_cdb = 1 support_random_del = 1 boot_ldrv_enabled = 1 boot_ldrv = 0 boot_pdrv_enabled = 0 boot_pdrv_ch = 0 boot_pdrv_tgt = 0 quiescent = 0 has_cluster = 0 Module Parameters: max_cmd_per_lun = 63 max_sectors_per_io = 128 Every 2.4 kernel past 2.4.27 and every 2.6 kernel I have tried detect the card, but not the disks. Is this a known problem? Any way around it? schu