From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030752AbXDQUMU (ORCPT ); Tue, 17 Apr 2007 16:12:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1031151AbXDQUMU (ORCPT ); Tue, 17 Apr 2007 16:12:20 -0400 Received: from relay5.ptmail.sapo.pt ([212.55.154.25]:34486 "HELO sapo.pt" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with SMTP id S1030752AbXDQUMT (ORCPT ); Tue, 17 Apr 2007 16:12:19 -0400 X-Greylist: delayed 400 seconds by postgrey-1.27 at vger.kernel.org; Tue, 17 Apr 2007 16:12:19 EDT X-AntiVirus: PTMail-AV 0.3-0.90.1 Message-ID: <46252891.6080701@wizy.org> Date: Tue, 17 Apr 2007 21:05:37 +0100 From: Ricardo Correia User-Agent: Thunderbird 1.5.0.10 (X11/20070403) MIME-Version: 1.0 To: Florian Weimer CC: Theodore Tso , Daniel Hazelton , Tomasz K?oczko , "David R. Litwin" , linux-kernel@vger.kernel.org Subject: Re: ZFS with Linux: An Open Plea References: <20070417131045.GB18373@thunk.org> <200704171222.19892.dhazelton@enter.net> <20070417175055.GA24963@thunk.org> <87odlmrei0.fsf@mid.deneb.enyo.de> <46252675.9010201@wizy.org> In-Reply-To: <46252675.9010201@wizy.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ricardo Correia wrote: > That FAQ entry is outdated, ZFS can recover from metadata corruption on > non-replicated pools for a long time already. Just a clarification, ZFS not only detects metadata corruption through the use of checksums but, since it keeps 2-3 copies of each metadata block on-disk (even on non-replicated pools), it also rewrites the corrupted blocks, effectively repairing the corruption. All of this is done transparently to the user but, of course, it's possible to see a report of checksum failures.