From mboxrd@z Thu Jan 1 00:00:00 1970 From: Frido Ferdinand Subject: Re: New features? Date: Tue, 31 Oct 2006 22:41:38 +0100 Message-ID: <20061031214138.GA17958@timor.isp-services.nl> References: <1162293818.32109.113.camel@kenny> <17735.14472.835153.186432@cse.unsw.edu.au> <45477ECB.1000801@h3c.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <45477ECB.1000801@h3c.com> Sender: linux-raid-owner@vger.kernel.org To: Mike Hardy Cc: John Rowe , linux-raid@vger.kernel.org List-Id: linux-raid.ids Hi, On Tue, Oct 31, 2006 at 08:50:19AM -0800, Mike Hardy wrote: > >> 1 "Warm swap" - replacing drives without taking down the array but maybe > >> having to type in a few commands. Presumably a sata or sata/raid > >> interface issue. (True hot swap is nice but not worth delaying warm- > >> swap.) > > > > I believe that 2.6.18 has SATA hot-swap, so this should be available > > know ... providing you can find out what commands to use. > > I forgot 2.6.18 has SATA hot-swap, has anyone tested that? Yeah, I've tracked the sata EH patches and now 2.6.18 for a while and hotswap works. However if you pull the disk on a raidset the disk is set as faulty and the device (/dev/sda for example) dissapears. If you replug it, the device does not regain it's original devicename but but will use the latest free 'slot' available (in a four disk layout that's /dev/sde). Also trying to --remove the disk doesn't work since the devicefile is gone. So be sure to --remove disks _before_ you pull it. Anyone know if there's work being done to fix this issue, does this also happen on scsi ? Met vriendelijke groet, -- Frido Ferdinand