From: Alan Stern Subject: Re: [linux-pm] Re: A unresponsive file system can hang all I/O in the system on linux-2.6.23-rc6 (dirty_thresh problem?) Date: Fri, 28 Sep 2007 12:45:41 -0400 (EDT) Message-ID: References: <1190986542.13204.10.camel@twins> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: Jonathan Corbet , lkml , nfs@lists.sourceforge.net, Andrew Morton , linux-pm To: Peter Zijlstra Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list2-new.sourceforge.net with esmtp (Exim 4.43) id 1IbIyI-0007cX-Om for nfs@lists.sourceforge.net; Fri, 28 Sep 2007 09:45:46 -0700 Received: from iolanthe.rowland.org ([192.131.102.54]) by mail.sourceforge.net with smtp (Exim 4.44) id 1IbIyK-0006Ha-RP for nfs@lists.sourceforge.net; Fri, 28 Sep 2007 09:45:51 -0700 In-Reply-To: <1190986542.13204.10.camel@twins> List-Id: "Discussion of NFS under Linux development, interoperability, and testing." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: nfs-bounces@lists.sourceforge.net Errors-To: nfs-bounces@lists.sourceforge.net On Fri, 28 Sep 2007, Peter Zijlstra wrote: > On Fri, 2007-09-28 at 07:28 -0600, Jonathan Corbet wrote: > > Is it really NFS-related? I was trying to back up my 2.6.23-rc8 system > > to an external USB drive the other day when something flaked and the > > drive fell off the bus. That, too, was sufficient to wedge the entire > > system, even though the only thing which needed the dead drive was one > > rsync process. It's kind of a bummer to have to hit the reset button > > after the failure of (what should be) a non-critical piece of hardware. > > > > Not that I have a fix to propose...:) > > the per bdi work in -mm should make the system not drop dead. > > Still, would a remove,re-insert of the usb media end up with the same > bdi? That is, would it recognise as the same and resume the transfer. Removal and replacement of the media might work. I have never tried it. But Jon described removal of the device, not the media. Replacing the device definitely will not work. Alan Stern ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs