From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg KH Subject: Re: [klibc] Exporting which partitions to md-configure Date: Mon, 30 Jan 2006 19:24:38 -0800 Message-ID: <20060131032438.GB8920@kroah.com> References: <43DEB4B8.5040607@zytor.com> <20060131032133.GA8920@kroah.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20060131032133.GA8920@kroah.com> Sender: linux-raid-owner@vger.kernel.org To: "H. Peter Anvin" Cc: Neil Brown , linux-raid@vger.kernel.org, klibc list , Linux Kernel Mailing List List-Id: linux-raid.ids On Mon, Jan 30, 2006 at 07:21:33PM -0800, Greg KH wrote: > On Mon, Jan 30, 2006 at 04:52:08PM -0800, H. Peter Anvin wrote: > > I'm putting the final touches on kinit, which is the user-space > > replacement (based on klibc) for the whole in-kernel root-mount complex. > > Pretty much the one thing remaining -- other than lots of testing -- > > is to handle automatically mounted md devices. In order to do that, > > without adding userspace versions of all the paritition code (which may > > be a future change, but a pretty big one) it would be good if the > > partition flag to auto-configure RAID was available in userspace, > > presumably through sysfs. > > What are you looking for exactly? udev has a great helper program, > volume_id, that identifies any type of filesystem that Linux knows about > (it was based on the ext2 lib code, but smaller, and much more sane, and > works better.) > > Would that help out here? Oh, an example of it working: # vol_id /dev/sda3 ID_FS_USAGE=filesystem ID_FS_TYPE=ext3 ID_FS_VERSION=1.0 ID_FS_UUID=9d2efd53-6b5a-4f84-86cc-def71269b7ca ID_FS_LABEL= ID_FS_LABEL_SAFE= # vol_id -t /dev/sda3 ext3 # vol_id -u /dev/sda3 9d2efd53-6b5a-4f84-86cc-def71269b7ca It also shows just the label if you have one set (I don't on this disk...) thanks, greg k-h