[Gluster-devel] posix: symlink broken?

[Rajesh Amaravathi]

This is how it should work, but for you requirements, you could cd (or chdir) into that directory and create a symlink:
cd /media
ln -s file link

this should give you an ls -la /media of:
lrwxrwxrwx  1 root root    1 Oct 11 12:51 link -> file

this way, even when you mount the volume on other mount points, the "link" will always refer to "file"

Regards, 
Rajesh Amaravathi, 
Software Engineer, GlusterFS 
RedHat Inc. 

----- Original Message -----
From: "M. Mohan Kumar" <mohan at in.ibm.com>
To: gluster-devel at nongnu.org
Sent: Thursday, October 11, 2012 11:35:47 AM
Subject: [Gluster-devel] posix: symlink broken?


As part of BD xlator symlink interface testing, I figured out that the
parameter 'linkname' contains even the mount point for example
'/media/link'. I wonder we should never get the mount directory in the
server part of code.

I tested creating symlink with posix xlator with top git commit
751da4675cf3add21e567aebb92de2c10457afee.

Here is the steps I followed:

[root at host mohan]# mount -t glusterfs host:/posix /media

[root at host mohan]# ls -la /media/
total 8
drwx------.  3 root root 4096 Oct 11 11:15 .
dr-xr-xr-x. 20 root root 4096 Sep 28 16:40 ..

[root at host mohan]# touch /media/file

[root at host mohan]# ln -s /media/file /media/link

[root at host mohan]# ls -la /media/
total 9
drwx------.  3 root root 4096 Oct 11 11:18 .
dr-xr-xr-x. 20 root root 4096 Sep 28 16:40 ..
-rw-r--r--.  1 root root    0 Oct 11 11:18 file
lrwxrwxrwx.  1 root root   11 Oct 11 11:18 link -> /media/file

[root at host mohan]# umount /media

[root at host mohan]# mount -t glusterfs host:/posix /media/posix

[root at host mohan]# ls -la /media/posix/
total 9
drwx------. 3 root root 4096 Oct 11 11:18 .
drwxr-xr-x. 4 root root 4096 Oct 11 07:55 ..
-rw-r--r--. 1 root root    0 Oct 11 11:18 file
lrwxrwxrwx. 1 root root   11 Oct 11 11:18 link -> /media/file


Directory listing of brick from server side
[root at host mohan]# ls -la ~/gl/posix/
total 24
drwx------.  3 root root 4096 Oct 11 11:18 .
drwx------.  4 root root 4096 Sep 28 20:20 ..
-rw-r--r--.  2 root root    0 Oct 11 11:18 file
drw-------. 12 root root 4096 Oct 11 11:18 .glusterfs
lrwxrwxrwx.  2 root root   11 Oct 11 11:18 link -> /media/file


Ideally it should be link -> file instead of /media/file
 
When I remounted with a different directory symlink is broken. Ideally
it should not create symlink with client mount directory details or am I
missing some thing here?


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