From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Robinson Subject: Re: Re-map disk sectors in userspace when rewriting after read errors Date: Fri, 18 Sep 2009 18:44:00 +0100 Message-ID: <4AB3C6E0.7010908@anonymous.org.uk> References: <87ws3z5iro.fsf@frosties.localdomain> <1253106813.17888.9.camel@localhost> <70ed7c3e0909180117v725982dr5c6a344586ba36eb@mail.gmail.com> <1253273738.9662.636.camel@kiste> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1253273738.9662.636.camel@kiste> Sender: linux-raid-owner@vger.kernel.org To: Linux RAID List-Id: linux-raid.ids On 18/09/2009 12:35, Matthias Urlichs wrote: [...] > If you run a check on a degraded array and the check runs into errors it > can't recover from, I assume that the disk will get kicked off and > you'll have a nonfunctional array instead. No, I don't think so - at least with RAID-1, md doesn't drop the array on errors on the one remaining functional disc, on the grounds that some data is better than none, but I don't know whether the array gets switched to read-only or what the situation is with other RAID levels. Cheers, John.