mount: unknown filesystem type 'devfs' error

kushalkoolwal · 03-07-2006, 07:24 PM

hi,

Recently I noticed the following messages during the bootup on my Debian etch(2.6.13) installation

Code:

mount: unknown filesystem type 'devfs'
umount: devfs: not mounted

Alhtough the system boots fine and everything works ok, why I am getting these error messages?

Is this because I installed udev on my system couple of weeks back?

Also do I need to uninstall devfs after installing udev?

Thanks

cs-cam · 03-07-2006, 08:54 PM

I'd say yeah, Udev replaces devfs. Remove the instances of devfs in your fstab and make sure that udev is started on boot and you should be fine

kushalkoolwal · 03-07-2006, 09:36 PM

Quote:

Originally Posted by cs-cam

I'd say yeah, Udev replaces devfs. Remove the instances of devfs in your fstab and make sure that udev is started on boot and you should be fine

Thank you so much for looking into this.

How do I remove the instance of devfs from my fstab file. Here is my fstab file

Code:

# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
/dev/hda1       /               ext3    defaults,errors=remount-ro 0       1
/dev/hdb        /media/cdrom0   iso9660 ro,user,auto    0       0
/dev/sda	/media/usb0	vfat	rw,user,auto	1	2

Thanks...

ALso I think udev is started on boot.

dracae · 03-07-2006, 09:47 PM

add devfs=nomount to you kernel command line (grub.conf|lilo.conf)

kushalkoolwal · 03-08-2006, 12:45 AM

Quote:

Originally Posted by dracae

add devfs=nomount to you kernel command line (grub.conf|lilo.conf)

Thanks dracae. Do I have to give this kernel parameter because the module for devfs is compiled into the kernel?

kevkim55 · 03-08-2006, 01:48 AM

Recompile your kernel with support for udev but, not for devfs thus removing any references to devfs in kernel. That you'd do if you're really bothered about the error mesage and are willing to venture into a recompile.

kushalkoolwal · 03-08-2006, 01:56 AM

Quote:

Originally Posted by kevkim55

Recompile your kernel with support for udev but, not for devfs thus removing any references to devfs in kernel. That you'd do if you're really bothered about the error mesage and are willing to venture into a recompile.

Well I will go with the option of giving kernel parameter. Based on your above reply, I am curious to know that if udev is not compiled into my kernel and then how come I am able to run udev in my current installation.

Thanks

cs-cam · 03-08-2006, 08:02 AM

Udev isn't a kernel module, up until the most recent version it ran entirely in userspace. The new Udev however depends on a uevent kernel module that has been introduced in 2.6.15.