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Re: [Gluster-devel] posix: symlink broken?
From: |
Amar Tumballi |
Subject: |
Re: [Gluster-devel] posix: symlink broken? |
Date: |
Thu, 11 Oct 2012 12:09:46 +0530 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120911 Thunderbird/15.0.1 |
On 10/11/2012 11:35 AM, M. Mohan Kumar wrote:
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:
address@hidden mohan]# mount -t glusterfs host:/posix /media
address@hidden 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 ..
address@hidden mohan]# touch /media/file
address@hidden mohan]# ln -s /media/file /media/link
address@hidden 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
address@hidden mohan]# umount /media
address@hidden mohan]# mount -t glusterfs host:/posix /media/posix
address@hidden 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
address@hidden 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
It the same behavior on backend fs also... I don't see it as a problem
in GlusterFS.
----snip----
address@hidden data]# mount fs1 /mnt/a/
address@hidden data]# df -h /mnt/a
Filesystem Size Used Avail Use% Mounted on
/dev/loop0 9.9G 151M 9.2G 2% /mnt/a
address@hidden data]# cd /mnt/a
address@hidden a]# echo hello > file
address@hidden a]# ln -s /mnt/a/file abcd
address@hidden a]# ls -l
total 20
lrwxrwxrwx. 1 root root 11 Oct 11 12:05 abcd -> /mnt/a/file
-rw-r--r--. 1 root root 6 Oct 11 12:04 file
address@hidden a]# cd
address@hidden ~]# umount /mnt/a
address@hidden ~]# cd /data
address@hidden data]# mount fs1 /mnt/b
address@hidden data]# ls -l /mnt/b
total 20
lrwxrwxrwx. 1 root root 11 Oct 11 12:05 abcd -> /mnt/a/file
-rw-r--r--. 1 root root 6 Oct 11 12:04 file
address@hidden data]#
---- snip ----
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?