[nmglug] Using Media Bay Devices In Dell 600m With Fedora Core 3

[William D. Nystrom]

Will pmount allow me to how swap devices in the media bay such as the
media bay battery, a CDRW/DVD combo drive, or a media bay hard drive?

Thanks,

-- 
Dave Nystrom
LANL X-2
Phone: 505-667-7913
Fax:   505-665-2227
Email: wdn at lanl.gov
Smail: Mail Stop T085
       Group X-2
       Los Alamos National Laboratory
       Los Alamos, NM 87545

On Thu, June 9, 2005 2:48 pm, Karl Hegbloom said:
> On Tue, 2005-06-07 at 14:26 -0600, Sam Noble wrote:
>> On Tue, 2005-06-07 at 13:46 -0600, William D. Nystrom wrote:
>> > > Sounds like the problem is that you've got two drives both using
>> > e2label
>> > > and your fstab and probably your grub config are trying to use those
>> > > labels rather than actual device names.
>> >
>> > Thanks for the info.  It seems to me that /etc/fstab is actually
>> > getting
>> > written when I reboot with a different configuration.
>>
>> The fancy project utopia stuff (udev, hald, pmount, gnomeVFS
>> etc.[Karlheg seems to know this stuff real well and probably knows which
>> actual 'thingy' is coming in to play here.]) is probably only making
>> changes for the removable devices so I'd go ahead and make the changes
>> by hand for all the /dev/hda devices.
>
> udev : Mounts a tmpfs on /dev and populates it with device files.  They
> are created as needed, by a kernel call-out (via hotplug).  There are
> device nodes in there only for devices that are actually installed on
> the system.
>
> hald : http://freedesktop.org/Software/hal
>
> pmount : Allows an ordinary user to mount a removable device without
> requiring a listing for it in /etc/fstab.  It does not alter the fstab
> file at all.
>
> gnomeVFS : akin to XEmacs 'efs', or KDE 'ioslaves'.  It's a virtual file
> system layer that allows access to file:, smb:, ftp:, http:, and dav:
> URI's from Gnome applications that utilize it.  (I wonder if a Linux
> FUSE module could be created that uses gnomeVFS?)
>
> For what you are doing, you need to change fstab yourself.  The Utopia
> system is not loaded that early anyhow.  It does not edit fstab.
>
>> I'm not a fan of using Label=x in config files. I think the flexibility
>> it provides is easily overshadowed by the likelihood of it causing
>> problems. For instance I don't know a way to get a kernel to boot on a
>> system with that syntax in fstab without using an initrd.
>
> I'm reasonably certain that handling of LABEL and UUID mounts is done by
> the 'mount' program itself, and not the kernel.  There are some bugs in
> it, last time I tried to use it, for managing multiple USB storage
> drives, prior to the advent of 'pmount'.  With pmount, everything just
> works.
>
> --
> Karl Hegbloom <karlheg at laclinux.com>
> Los Alamos Computers, Technical Support
>
>
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