Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752515Ab3J2UKg (ORCPT ); Tue, 29 Oct 2013 16:10:36 -0400 Received: from cantor2.suse.de ([195.135.220.15]:48676 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752310Ab3J2UKf (ORCPT ); Tue, 29 Oct 2013 16:10:35 -0400 Date: Tue, 29 Oct 2013 21:10:32 +0100 From: Jan Kara To: John Twideldum Cc: linux-kernel@vger.kernel.org Subject: Re: 3.12-rc5 and overwritten partition table - by powertop? Message-ID: <20131029201032.GC9568@quack.suse.cz> References: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1023 Lines: 28 On Tue 29-10-13 15:57:54, John Twideldum wrote: > replying to myself with more insights... > ? > >0000000 13.00000\nalsa:hw > >0000020 C0D0\t99.00000\nal > >0000040 sa:hwC0D3\t99.000 > >0000060 00\nbacklight:acp > >..... > > The first ~170kb of /dev/sda got blown away with what seems to be a logging output > by Powertop, when I was playing with the tuneables. > (Luckily the first partition starts later :-)) So did you log the output to some file? I'm just trying to understand how it could get onto your disk in the first place... > Why is that I don't know, but maybe when turning on the SATA knobs > something goes wrong. I'm afraid to try again, but I accept rather higher > power use than data loss again :-/ Honza -- Jan Kara SUSE Labs, CR -- 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/