From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ethan Wilson Subject: Re: Can I replace raid6 disk using dd? Date: Tue, 19 Aug 2014 11:08:10 +0200 Message-ID: <53F313FA.5040106@shiftmail.org> References: <53F2B6D8.4030208@shiftmail.org> <53F2BB43.4030408@gmail.com> <53F2F82E.7070204@megasoft.be> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <53F2F82E.7070204@megasoft.be> Sender: linux-raid-owner@vger.kernel.org To: linux-raid List-Id: linux-raid.ids On 19/08/2014 09:09, Killian De Volder wrote: > No need to remove the bitmap. > But be very careful that the disk is exactly the same size (or bigger). > I recently had a disk that was slightly smaller then advertised ! > > But if it's a raid6 why not just jank a disk ? > It's still going to be redundant, but only on 1 disk. > > Killian De Volder > Megasoft bvba > killian.de.volder@megasoft.be > I think it would not be accepted by MD if the size was smaller than needed. At least with --replace. With the dd thing I don't know: it might trust the metadata and bypass the check.... I'd be careful in that case indeed.