From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755862AbYEEG2T (ORCPT ); Mon, 5 May 2008 02:28:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753297AbYEEG2M (ORCPT ); Mon, 5 May 2008 02:28:12 -0400 Received: from mail.karo-electronics.de ([213.146.116.110]:35983 "EHLO mail.karo-electronics.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753062AbYEEG2K (ORCPT ); Mon, 5 May 2008 02:28:10 -0400 Message-ID: <18462.43245.728465.911831@ipc1.ka-ro> Date: Mon, 5 May 2008 08:27:57 +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: <20080503063231.GA688@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> 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: > > My guess is that you have an old/buggy version of mkdir. > > > > What does > > mkdir --version > > > > say? > > Mine says: > > mkdir (GNU coreutils) 6.10 > > Copyright (C) 2008 Free Software Foundation, Inc. > > etc... > > I would bet this is the problem for the reporter. > > I tried the same here, and cannot exhibit the problem. Just like the > reporter, my / is ro and /dev is rw : > I'm using busybox 1.0 (on an embedded PXA320 system). > stat64("/dev/a/b/c", 0xbf9175dc) = -1 ENOENT (No such file or directory) > umask(0) = 022 > open(".", O_RDONLY|O_LARGEFILE|O_DIRECTORY) = 3 > chdir("/") = 0 > mkdir("dev", 0755) = -1 EEXIST (File exists) > stat64("dev", {st_mode=S_IFDIR|0755, st_size=17080, ...}) = 0 > chdir("dev") = 0 > mkdir("a", 0755) = 0 > chdir("a") = 0 > mkdir("b", 0755) = 0 > chdir("b") = 0 > umask(022) = 0 > mkdir("c", 0777) = 0 > fchdir(3) = 0 > close(3) = 0 > 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) umask(022) = 022 write(2, "mkdir: ", 7mkdir: ) = 7 write(2, "Cannot create directory `/dev/\'", 31Cannot create directory `/dev/') = 31 write(2, ": Read-only file system\n", 24: Read-only file system ) = 24 io_submit(0x1, 0x1, 0xfbad2088 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 ___________________________________________________________