In article <4324.70.uupcb@digund.uucp>, copernicus@digund.uucp (Copernicus) writes:
quoted text
> RCC:>        For people that downloaded the efsprogs version alpha 5,
> RCC:>DON'T USE THEM !!!  In version alpha 5, efsck contains a bug which
> RCC:>can cause some great damages on an ext fs.  The bug is fixed in
> RCC:>the new version (alpha 6) which is available on ftp-masi.ibp.fr
> RCC:>in the directory pub/linux/ALPHA/extfs (files efsprogs6.tar.Z,
> RCC:>efsprogs6.bin.tar.Z, efsprogs6.src.tar.Z) and I expect them to
> RCC:>be available on tsx-11 in directory pub/linux/ALPHA/extfs soon.
> 
> RCC:>Changes from alpha 5 to alpha 6 are :
> RCC:>- in efsck, a bad test on directory structures is fixed,
> RCC:>- efsck and mkefs now use getopt() to decode arguments,
> RCC:>- mkefs now accepts a -i option to specify the ratio of inodes.
> 
> RCC:>        I strongly apologize for the bug in efsck :-{
> 
> RCC:>                Remy
> RCC:>--
> 
> Thats great to hear.
> 
> I have a question for you.  I am running Linux 0.97pl1 (where is L.T's 0.5
> patch?), and your extfs alpha 5 system (will up to 6 this weekend), and the
> dosfs extensions.
> 
> My question is:  Why when I boot Linux I get a magic match failed but Linux
> mounts the extended file system correctly anyways?  Is this just an fluke
> message poping up?
> 
> /etc/mtab:  (citing this from memory)
> /dev/hda2       /       ext     default
> 
> /etc/rc:
> mount -av
> 
> Besides that little message the file system works great!  Now I just
> need to get the source code to everything and recompile it!
> 
> Chris Nalley
> ---
>  . SLMR 2.1 . Digital Underground - A Copernician Corporation
>                                                  
Linux defaults to MINIX fs on boot up.  The first fs is checks is MINIX
but, when that fails, it checks ext, gets a match, and, as you say,
works great.

Since I don't like (trust) things that give an error message and then
keep working, I added a couple of lines in the kernel where fs
checking is done to give the message:
     MINIX magic failed
or
     MINIX magic match
when mounting a fs.
Also gives:
     EXT magic ...
when trying to mount ext fs.
No check for ms-dog.

Bottom line: Linux ext-fs works.  If the error message doesn't bother you--
ignore it.