From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757543AbYEEHIT (ORCPT ); Mon, 5 May 2008 03:08:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754443AbYEEHIL (ORCPT ); Mon, 5 May 2008 03:08:11 -0400 Received: from mail.karo-electronics.de ([213.146.116.110]:39950 "EHLO mail.karo-electronics.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753301AbYEEHIK (ORCPT ); Mon, 5 May 2008 03:08:10 -0400 Message-ID: <18462.45648.60033.233887@ipc1.ka-ro> Date: Mon, 5 May 2008 09:08:00 +0200 From: =?iso-8859-15?q?Lothar_Wa=DFmann?= To: Willy Tarreau Cc: NeilBrown , Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: linux-2.6.25: 'mkdir -p' does not work with rootdir as mount point inside a read only filesystem In-Reply-To: <20080505070214.GA14635@1wt.eu> References: <18456.34604.472989.35082@ipc1.ka-ro> <20080501215231.297e0d9d.akpm@linux-foundation.org> <53722.192.168.1.70.1209711343.squirrel@neil.brown.name> <20080503063231.GA688@1wt.eu> <18462.43245.728465.911831@ipc1.ka-ro> <20080505070214.GA14635@1wt.eu> X-Mailer: VM 7.19 under Emacs 21.4.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Willy Tarreau writes: > > > open(".", O_RDONLY|O_LARGEFILE|O_DIRECTORY) = 3 > > > chdir("/") = 0 > > > mkdir("dev", 0755) = -1 EEXIST (File exists) ^^^^^^ [...] > > This is what strace shows in my case: > > mkdir("/", 0777) = -1 EEXIST (File exists) > > stat64("/", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 > > mkdir("/dev/", 0777) = -1 EROFS (Read-only file system) ^^^^^ > What puzzles me is why you have this problem only with a new kernel. > I suspect that previous ones did report EEXIST and now we report > EROFS for an existing directory on an ro fs. > Interestingly your strace output showed a return value of EEXIST where mine had EROFS. Lothar Waßmann -- ___________________________________________________________ Ka-Ro electronics GmbH | Pascalstraße 22 | D - 52076 Aachen Phone: +49 2408 1402-0 | Fax: +49 2408 1402-10 Geschäftsführer: Matthias Kaussen Handelsregistereintrag: Amtsgericht Aachen, HRB 4996 www.karo-electronics.de | info@karo-electronics.de ___________________________________________________________