From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benny Halevy Subject: Is sata_nv compatible with async scsi scan? Date: Tue, 21 Apr 2009 10:03:51 +0300 Message-ID: <49ED6FD7.3070307@panasas.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from yw-out-2324.google.com ([74.125.46.31]:32329 "EHLO yw-out-2324.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750760AbZDUHD6 (ORCPT ); Tue, 21 Apr 2009 03:03:58 -0400 Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Jeff Garzik Cc: lkml , linux-ide@vger.kernel.org Hi Jeff, Since 2.6.29 I'm having intermittent problems with booting kernels. After supposedly waiting for scsi async scan to complete, quite frequently I see errors from the init resume process when it fails to find the swap partition and later the root file system fails to load. A workaround that I found to be helpful is booting the kernel with scsi_mod.scan=sync so I suspect sata_nv has a problem with asynchronous scanning. The two machines this happens on have: IDE interface: nVidia Corporation MCP55 SATA Controller (rev a2) and IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev f3) This one: IDE interface: nVidia Corporation MCP55 SATA Controller (rev a3) seems to be less prone to the problem, though I tend to reboot it much less frequently, so it's possible I just happened to be lucky with it. Benny