From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933933Ab2FELNu (ORCPT ); Tue, 5 Jun 2012 07:13:50 -0400 Received: from mail-lb0-f174.google.com ([209.85.217.174]:63854 "EHLO mail-lb0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932316Ab2FELNs (ORCPT ); Tue, 5 Jun 2012 07:13:48 -0400 Message-ID: <4FCDE9E8.3090504@gmail.com> Date: Tue, 05 Jun 2012 15:13:44 +0400 From: George Shuklin User-Agent: Mozilla/5.0 (X11; Linux i686; rv:13.0) Gecko/20120530 Thunderbird/13.0 MIME-Version: 1.0 To: Paul Bolle CC: "H. Peter Anvin" , Casey Schaufler , Al Viro , linux-kernel Subject: Re: Why minor is still 8 bit? References: <4FCC0E6D.9000206@gmail.com> <20120604013504.GU30000@ZenIV.linux.org.uk> <4FCC3151.1040503@gmail.com> <4FCCDE2B.3020306@schaufler-ca.com> <4FCD0591.2050504@gmail.com> <4FCD5869.8000306@zytor.com> <4FCD5BF3.30707@gmail.com> <1338888208.4971.30.camel@x61.thuisdomein> <4FCDD308.8070204@gmail.com> <1338889756.4971.34.camel@x61.thuisdomein> In-Reply-To: <1338889756.4971.34.camel@x61.thuisdomein> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05.06.2012 13:49, Paul Bolle wrote: > On Tue, 2012-06-05 at 13:36 +0400, George Shuklin wrote: >> This is a limitaiton of LMV itself. I'm talking about making those LV >> active (visible in system). When you trying to activate too much LV, you >> will get 'device io ctl failed' message. > What is the exact text of that message? Where is it found (stderr, > dmesg, ...)? Do you know what prints it (kernel, user space)? Do you run > into this issue when trying to activate the 256th LV, or later, or > earlier? > > > Paul Bolle > Ooops, I was deeply wrong. Sorry, the problem was related to LVM behavior in 2.6.32-12-xs (XenServer kernel).