From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jurriaan on adsl-gate Subject: Re: 2.6.15-mm3 hangs during boot (raid related?) Date: Thu, 12 Jan 2006 18:29:00 +0100 Message-ID: <20060112172900.GA3687@gates.of.nowhere> References: <20060112062310.GA12471@gates.of.nowhere> <17349.63738.220760.681335@cse.unsw.edu.au> Reply-To: Jurriaan Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <17349.63738.220760.681335@cse.unsw.edu.au> Sender: linux-raid-owner@vger.kernel.org To: Neil Brown Cc: Jurriaan , linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-raid.ids From: Neil Brown Date: Thu, Jan 12, 2006 at 05:36:42PM +1100 Sent-To: > On Thursday January 12, thunder7@xs4all.nl wrote: > > > > 2.6.15-mm3 hangs during boot for me, after the lines > > > > ======== > > md4: bitmap initialized from disk: read 15/15 pages, set 51 bits, status: 0 > > created bitmap (224 pages) for device md4 > > ======== > > > > ctrl-alt-del to reboot works sometimes (2 out of 3). Below is complete > > dmesg (from 2.6.15-mm2, ver_linux output, .config and raid details). > > Yep, this is probably a known problem with recent changes to the > 'barrier' code. > > Try to convince md not to use barrier by changing md_super_write in > drivers/md/md.c. Simply remove > > if (!test_bit(BarriersNotsupp, &rdev->flags)) { > struct bio *rbio; > rw |= (1< rbio = bio_clone(bio, GFP_NOIO); > rbio->bi_private = bio; > rbio->bi_end_io = super_written_barrier; > submit_bio(rw, rbio); > } else > > leaving the > submit_bio(rw, rbio); > > which comes after it. > With this patch, it boots and works just fine. Kind regards, Jurriaan -- His pride could withstand anything. He simply wouldn't care. Melanie Rawn - Skybowl Debian (Unstable) GNU/Linux 2.6.15-mm3 2x4802 bogomips 0.31