From mboxrd@z Thu Jan 1 00:00:00 1970 From: Goffredo Baroncelli Subject: Re: [RFC][BTRFS-PROG] Avoid to scan cdrom and floppy Date: Thu, 16 Jun 2011 22:07:53 +0200 Message-ID: <4DFA6299.3040904@libero.it> References: Reply-To: kreijack@inwind.it Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Cc: Helmut Hullen , linux-btrfs@vger.kernel.org To: helmut@hullen.de Return-path: In-Reply-To: List-ID: Hi Helmut On 06/16/2011 05:09 PM, Helmut Hullen wrote: > Hallo, Josef, > > Du meintest am 16.06.11: > >>>> Who the hell doesn't use udev? > >>> Me - p.e. >>> "udev" may be interesting for desktop users, for multimedia >>> computers. It's not necessary for a simple server, for a machine >>> where the administrator wants to rule instead of "udev". > >> You don't need udev to use btrfs, I've just not seen a distro that >> allows you to not run with udev, so my question is more curiosity >> than anything. > > But the developers seem to use only machines where "udev" runs. > > p.e. when testing the disks (I've told this bug about 1 year ago), p.e. > with "/dev/btrfs-control". > > "btrfs-control" has to exist before btrfs is started, and there is > neither a hint in the documentation nor a check. > Sorry Helmut, but I don't understand if you are blaming about lack of documentation or about a problem. The fact that the file /dev/btrfs-control doesn't exist, is not a bug/problem of btrfs. This file should be created by the distribution: or via the udev or via devtmpfs or statically. In this is not different by any other device (like /dev/sdaX for example). They have to exists before mounting the root-filesystem. BR G.Baroncelli