From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 21 Aug 2001 10:47:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 21 Aug 2001 10:47:41 -0400 Received: from thebsh.namesys.com ([212.16.0.238]:31758 "HELO thebsh.namesys.com") by vger.kernel.org with SMTP id ; Tue, 21 Aug 2001 10:47:10 -0400 Message-ID: <3B82743E.C442CF74@namesys.com> Date: Tue, 21 Aug 2001 18:46:22 +0400 From: Hans Reiser Organization: Namesys X-Mailer: Mozilla 4.77 [en] (X11; U; Linux 2.4.4 i686) X-Accept-Language: en, ru MIME-Version: 1.0 To: Corin Hartland-Swann CC: linux-kernel@vger.kernel.org Subject: Re: sync hanging In-Reply-To: Content-Type: text/plain; charset=koi8-r Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Corin Hartland-Swann wrote: > > Hi Hans, > > On Tue, 21 Aug 2001, Hans Reiser wrote: > > Corin Hartland-Swann wrote: > > > I'm using kernel 2.4.8-ac2 on a Dual PIII-1000 with 4096M RAM, and a > > > reiserfs filesystem on a RAID-1 mirror of two 76GB UDMA disks, and I'm > > > experiencing a strange problem after the machine has been running for a > > > while. > > > > > > Every now and again, running sync(1) (i.e. the program) seems to hang and > > > end up in state D (uninterruptible sleep). There is no way to kill it > > > (even with SIGKILL but I assume that this is typical for state D > > > processes. > > > > > > Does anyone have any idea what may be causing this? I have searched the > > > archives and couldn't find anything similar. > > > > turn off highmem, known bug, I don't know if it is solved yet. > > Is 2G RAM OK (by manually changing __PAGE_OFFSET ?) > surf through lkm postings for more info on this bug, it is not in my area of expertise. > Is this directly related to reiserfs (i.e. will it go away if I go back to > using ext2 or switch to xfs?) it is completely unrelated to reiserfs. > > How serious is the problem? Can I get away with using it as is (with > highmem) on a production server or will that cause serious repercussions? you will be screwed if you use it on a production server, as best I understand it. > > Thanks, > > Corin > > /------------------------+-------------------------------------\ > | Corin Hartland-Swann | Tel: +44 (0) 20 7491 2000 | > | Commerce Internet Ltd | Fax: +44 (0) 20 7491 2010 | > | 22 Cavendish Buildings | Mobile: +44 (0) 79 5854 0027 | > | Gilbert Street | | > | Mayfair | Web: http://www.commerce.uk.net/ | > | London W1K 5HJ | E-Mail: cdhs@commerce.uk.net | > \------------------------+-------------------------------------/