From mboxrd@z Thu Jan 1 00:00:00 1970 From: walt Subject: Question about scsi device names Date: Thu, 11 Jun 2009 17:36:13 -0700 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from main.gmane.org ([80.91.229.2]:48465 "EHLO ciao.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750718AbZFLAg2 (ORCPT ); Thu, 11 Jun 2009 20:36:28 -0400 Received: from list by ciao.gmane.org with local (Exim 4.43) id 1MEuks-0002UR-1L for linux-scsi@vger.kernel.org; Fri, 12 Jun 2009 00:36:26 +0000 Received: from adsl-69-234-202-135.dsl.irvnca.pacbell.net ([69.234.202.135]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 12 Jun 2009 00:36:26 +0000 Received: from w41ter by adsl-69-234-202-135.dsl.irvnca.pacbell.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 12 Jun 2009 00:36:26 +0000 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org Hi list, Here is some background for my question: I have a machine with two sata disks, one connected to the onboard sata controller, the other to an add-on ESATA board plugged into the PCIX slot. My puzzle: When I boot a kernel from the 2.6.28 series, the onboard controller's disk gets dubbed /dev/sdb, and the ESATA disk is /dev/sda. When I boot the same machine with a more recent kernel like Linus's 2.6.30 series, the device names are reversed. Is this change in behavior expected based on recent kernel patches? Thanks.