From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mourad De Clerck Subject: Re: Marvell 6121 AHCI: hotplug not reliable? Date: Fri, 14 Aug 2009 23:01:22 +0200 Message-ID: <4A85D0A2.5050400@aquazul.com> References: <4A8406EE.1040203@aquazul.com> <4A8412D1.2070506@garzik.org> <4A8417E0.2010802@aquazul.com> <4A852EBC.7070309@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from gretel.risen.be ([78.46.99.137]:51633 "EHLO gretel.risen.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754614AbZHNVBe (ORCPT ); Fri, 14 Aug 2009 17:01:34 -0400 In-Reply-To: <4A852EBC.7070309@kernel.org> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Tejun Heo Cc: Jeff Garzik , linux-ide@vger.kernel.org On 14/08/09 11:30, Tejun Heo wrote: > Link status doesn't have much to do with drive spin up. It looks like > the PHY on the host side just went out for lunch and only controller > wide reset brings it back. Can you please try the followings after > the failure occurred? I'll try this, but it might take me a while before I report back: I get this problem only once every two weeks or so (It's hotplugged daily) > 1. echo - - - > /sys/class/scsi_host/hostN/scan OK > 2. unplug and replug the signal while leaving the drive powered up I'm assuming you mean leave the power plugged in, but yank and replug the SATA cable? Might be a bit tricky considering I'd need to open it up (the tray combines power and SATA), and it's in a remote location. Thank you for your suggestions, I'll report back on the next failure. -- Mourad