linux-kernel - Re: linux-2.6.25: 'mkdir -p' does not work with rootdir as mount point inside a read only filesystem

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Message-ID: <53722.192.168.1.70.1209711343.squirrel@neil.brown.name>
Date:	Fri, 2 May 2008 16:55:43 +1000 (EST)
From:	"NeilBrown" <neilb@...e.de>
To:	"Andrew Morton" <akpm@...ux-foundation.org>
Cc:	Lothar Waßmann <lw@...o-electronics.de>,
	linux-kernel@...r.kernel.org
Subject: Re: linux-2.6.25: 'mkdir -p' does not work with rootdir as mount 
     point inside a read only filesystem

On Fri, May 2, 2008 2:52 pm, Andrew Morton wrote:
> On Wed, 30 Apr 2008 16:50:20 +0200 Lothar Wa__mann
> <LW@...O-electronics.de> wrote:
>
>> Hi,
>
> (y'know that ~4000 people read your email and hit 'n'?  Except for me?
> That's one bug I'd like to get fixed)

Tricky....

>
>> when trying to create a directory path with 'mkdir -p' with the root
>> being a mount point of a writeable filesystem that exists inside a
>> read-only file system, mkdir return -EROFS.

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...

What does

   strace mkdir -p /dev/.udev/db

show ???

NeilBrown


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