From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Peter Anvin" Subject: e2fsck running extremely slowly Date: Sun, 21 Jul 2013 15:45:20 -0700 Message-ID: <51EC6480.6000200@zytor.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: linux-ext4@vger.kernel.org Return-path: Received: from terminus.zytor.com ([198.137.202.10]:37299 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751253Ab3GUWpl (ORCPT ); Sun, 21 Jul 2013 18:45:41 -0400 Sender: linux-ext4-owner@vger.kernel.org List-ID: I have a large filesystem (14 TB) which suffered a RAID failure which seems to have corrupted some inodes. Unfortunately as a result there are now a number of inodes with "false extents" which result in a very large number of multiply claimed blocks. I have tried to run e2fsck on this filesystem, and it gets as far as phase 1D, at which point it starts running at a glacial pace. After 48 hours -- most of it sitting at 100% CPU executing no system calls at all -- it claims to have processed a single file out of almost 10000. Anything I can do (to rescue the filesystem or try to debug the problem) other than "wipe and start over"? I believe this is e2fsck 1.42.3 from Fedora 17. -hpa