From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bernd Schubert Subject: Re: "No such device" on --remove Date: Wed, 09 May 2007 13:42:17 +0200 Message-ID: References: <20070508170441.GB4333@scavenger.homeip.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7Bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Benjamin Schieder wrote: > root@crazyhorse:~# mdadm /dev/md/2 -r /dev/hdh5 > mdadm: hot remove failed for /dev/hdh5: No such device > > md1 and md2 are supposed to be raid5 arrays. You are probably using udev, don't you? Somehow there's presently no /dev/hdh5, but to remove /dev/hdh5 out of the raid, mdadm needs this device. There's a workaround, you need to create the device in /dev using mknod and then you can remove it with mdadm. We are presently running into a similar problem, which I'm going to describe on this and hotplug list right now. Hope it helps, Bernd