From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Peter Anvin" Subject: Suggestion for hot-replace Date: Sat, 24 Nov 2012 22:37:49 -0800 Message-ID: <50B1BCBD.70306@zytor.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: Linux RAID Mailing List List-Id: linux-raid.ids I was looking at the hot-replace (want_replacement) feature, and I had a thought: it would be nice to have this in a form which *didn't* fail the incumbent drive after the operation is over, and instead turned it into a spare. This would make it much easier and safer to periodically rotate and test any hot spares in the system. The main problem with hot spares is that you don't actually know if they work properly until there is a failover... -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.