From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932205AbcHNNgQ (ORCPT ); Sun, 14 Aug 2016 09:36:16 -0400 Received: from gherkin.frus.com ([192.158.254.49]:50920 "EHLO gherkin.frus.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752112AbcHNNgP (ORCPT ); Sun, 14 Aug 2016 09:36:15 -0400 Date: Sun, 14 Aug 2016 07:38:50 -0500 From: Bob Tracy To: james harvey Cc: Pavel Machek , kernel list Subject: Re: Who reordered my disks (probably v4.8-rc1 problem) Message-ID: <20160814123850.GA10884@gherkin.frus.com> References: <20160813190340.GA29989@amd> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Aug 14, 2016 at 05:03:33AM -0400, james harvey wrote: > Use static (persistent) naming instead, /dev/disk/by-label, > /dev/disk/by-id, /dev/disk/by-uuid, and if gpt /dev/disk/by-partlabel > and /dev/disk/by-partuuid The key takeaway from the above is, for the non-GPT case, userspace support (blkid and friends) is required to take advantage of static (persistent) naming, i.e., an initial ramdisk of some kind is no longer optional (boo! hiss!). There's an implied requirement for udev as well, but that's not nearly as distasteful. I had to make my peace with udev on an otherwise primitive (simple) Slackware system a few years ago when I upgraded my system hardware: included was a sound device with an HDMI interface, and the associated ALSA driver only supported dynamic minor devices. --Bob