From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751217AbWC0VF1 (ORCPT ); Mon, 27 Mar 2006 16:05:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751433AbWC0VF1 (ORCPT ); Mon, 27 Mar 2006 16:05:27 -0500 Received: from embla.aitel.hist.no ([158.38.50.22]:23206 "HELO embla.aitel.hist.no") by vger.kernel.org with SMTP id S1751217AbWC0VF1 (ORCPT ); Mon, 27 Mar 2006 16:05:27 -0500 Date: Mon, 27 Mar 2006 23:05:14 +0200 To: linux-kernel@vger.kernel.org Subject: Hanging ext3 or USB, linux 2.6.16-rc6-mm2 Message-ID: <20060327210514.GA24421@aitel.hist.no> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.11+cvs20060126 From: Helge Hafting Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I managed to hang ext3 or usb today. I have a small machine that boot off a compactflash card. I want to use a bigger card, so I used scp to copy everything from that machine to a new 4GB card in a usb cardreader. This cardreader have never given me trouble before, but is usually used for reading. I decided on a ext3 fs in order to avoid long fsck runs, and a minimal 4MB journal in order to not waste space. Disk seeks are supposed to be really cheap on a device with no moving parts anyway. The root reserved percentage is 1% instead of the usual 5% - more space, and fragmentation will probably not hurt much with cheap seeks. When scp had filled the card to 71% of capacity (according to df), it stopped in the middle of a file. I first suspected network errors, but a "ls /mnt" hung. I now have the following processes in D-state: [khubd] [scsi_eh_4] [usb-storage] [kjournald] scp, 3 x [pdflush], 2 x ls, lsusb, and a sync. Could this be a ext3 problem due to the small journal or something? Or is a usb problem more likely? "Dmesg" shows an usb disconnect sometime after I mounted that filesystem, but it seems to be usblp0 which looks like the printer to me. Helge Hafting