nfs mounts don't work through fstab

Sean sean at
Wed Feb 20 01:16:05 UTC 2008

 From FreeBSD 5.5 (the earliest I can check readily)


      The fourth field, (fs_mntops), describes the mount options  
      with the file system.  It is formatted as a comma separated list  
      options.  It contains at least the type of mount (see fs_type  
below) plus
      any additional options appropriate to the file system type.  See  
      options flag (-o) in the mount(8) page and the file system  
specific page,
      such as mount_nfs(8), for additional options that may be  

So the fs_type (rw, ro, etc.) has always been documented as  
obligatory, though in slightly less than obvious wording.

On 20/02/2008, at 3:20 AM, Dominic Fandrey wrote:

> Eygene Ryabinkin wrote:
>> Dominic, good day.
>> Tue, Feb 19, 2008 at 02:47:51PM +0100, Dominic Fandrey wrote:
>>> My nfs mounts haven't been working by their fstab entries, ever  
>>> since I switched to RELENG_7. Today I took the time tracking the  
>>> issue down by adding lots of printf to mount.c. I tracked the  
>>> problem down to the function
>>> fstabscan() in the file "/usr/src/lib/libc/gen/fstab.c".
>>> The result of my testing was that it is now obligatory to set  
>>> 'sw', 'ro' or 'rw' in the options list.
>> Could you, please, show your /etc/fstab?  I see that lib/libc/gen/ 
>> fstab.c
>> was last changed 4 years ago (not counting revision 1.15, where the
>> advertising license clause was removed), so perhaps fstabscan() is
>> not guilty.
>> Thank you!
> These 2 lines have been in use since 6.0 release:
> mobileKamikaze:/usr/src /usr/src nfs -b,-T,-R=5,noauto 0 0
> mobileKamikaze:/usr/obj /usr/obj nfs -b,-T,-R=5,noauto 0 0
> They stopped working with the switch to RELENG_7.
> # mount /usr/src/                                      0 /root
> fstab: /etc/fstab:27: Inappropriate file type or format
> fstab: /etc/fstab:28: Inappropriate file type or format
> fstab: /etc/fstab:27: Inappropriate file type or format
> fstab: /etc/fstab:28: Inappropriate file type or format
> mount: /usr/src: unknown special file or file system
> fstabscan() is the place where the "Inappropriate file type or  
> format" error is printed. The pointer char* cp either points to a  
> string "rw", "ro" or "sw". If none of these are present cp is a NULL- 
> pointer when the final check in line 207 is reached. So  
> error(EFTYPE) is called.
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