invalid stat result

invalid stat result

[Guillaume Rousse]

See http://qa.mandriva.com/show_bug.cgi?id=26244
-- 
Guillaume Rousse
Projet Estime, INRIA
Domaine de Voluceau
Rocquencourt - B.P. 105
78153 Le Chesnay Cedex - France

Re: invalid stat result

[Ian Kent]

On Thu, 2006-10-05 at 16:35 +0200, Guillaume Rousse wrote:
> See http://qa.mandriva.com/show_bug.cgi?id=26244

What kernel version?
What additional patches have been applied?

Ian

Re: invalid stat result with autofs 5

[Guillaume Rousse]

Guillaume Rousse wrote:
> See http://qa.mandriva.com/show_bug.cgi?id=26244
This seems to be fixed with 5.0.1rc3.

However, it is impossible to create new directories directly under mount
point, which is quite problematic for creating new users home directories:
[root@etoile ldapscripts]# mkdir /home/dir/foo
mkdir: cannot create directory `/home/dir/foo': No such file or directory.

From /var/log/messages
Feb  7 11:37:04 etoile automount[25264]: rmdir_path: lstat of foo failed.

From /proc/mounts
ou=auto.home.dir,ou=autofs,dc=msr-inria,dc=inria,dc=fr /home/dir autofs
rw,fd=5,pgrp=25264,timeout=300,minproto=5,maxproto=5,indirect 0 0
ou=auto.home.mi,ou=autofs,dc=msr-inria,dc=inria,dc=fr /home/mi autofs
rw,fd=10,pgrp=25264,timeout=300,minproto=5,maxproto=5,indirect 0 0

no-root-squash NFS option is set, so it is not a write permission
problem. Moreover, the problem doesn't exist if /home/dir is manually
mounted.

Re: invalid stat result with autofs 5

[Ian Kent]

On Wed, 2007-02-07 at 11:58 +0100, Guillaume Rousse wrote:
> Guillaume Rousse wrote:
> > See http://qa.mandriva.com/show_bug.cgi?id=26244
> This seems to be fixed with 5.0.1rc3.
> 
> However, it is impossible to create new directories directly under mount
> point, which is quite problematic for creating new users home directories:
> [root@etoile ldapscripts]# mkdir /home/dir/foo
> mkdir: cannot create directory `/home/dir/foo': No such file or directory.
> 

I think we need more infomation here.

What is the kernel version and have any additional patches been added?
What is the version of autofs and have any patches been added?

I don't quite understand the problem description either.

What are the maps that are being used?
Is the browse (--ghost) option being used?
If we get a clear description of the problem then we may need a debug
log, but right now I wouldn't know what to look for.

It isn't possible to create directories in an autofs filesystem itself,
and never has been, as that is the responsibility of the user space
daemon. Due to changes in recent kernels and the fact that I got
criticized for autofs creating directories as root on NFS mounted file
systems the mount point directories that you wish to mount must already
exist on the remote server. autofs creating these directories is
considered a security risk.

If you wished to create directories on a remote server then the parent
directory must be mounted, one way or another, then given that you have
permission, you could create the directories.

> >From /var/log/messages
> Feb  7 11:37:04 etoile automount[25264]: rmdir_path: lstat of foo failed.
> 
> >From /proc/mounts
> ou=auto.home.dir,ou=autofs,dc=msr-inria,dc=inria,dc=fr /home/dir autofs
> rw,fd=5,pgrp=25264,timeout=300,minproto=5,maxproto=5,indirect 0 0
> ou=auto.home.mi,ou=autofs,dc=msr-inria,dc=inria,dc=fr /home/mi autofs
> rw,fd=10,pgrp=25264,timeout=300,minproto=5,maxproto=5,indirect 0 0
> 
> no-root-squash NFS option is set, so it is not a write permission
> problem. Moreover, the problem doesn't exist if /home/dir is manually
> mounted.
> 
> _______________________________________________
> autofs mailing list
> autofs@linux.kernel.org
> http://linux.kernel.org/mailman/listinfo/autofs