+++ This bug was initially created as a clone of Bug #1021998 +++ +++ +++ +++ Use this bug to post patches to the master branch. +++ Description of problem: We are using the function to export all sub-directories in a gluster volume via nfs. For real directories it works fine but if we have a symbolic link which points to the directory, it is not possible to mount that directory via nfs and the name of the link. gluster volume on server: drwxr-xr-x 2 root root 6 Oct 22 14:24 folder lrwxrwxrwx 1 root root 7 Oct 22 14:24 link -> folder/ nfs mount on client: [root@gfs01 ~]# mount -t nfs -o vers=3 172.29.1.70:/gv0/link /nfs/ mount.nfs: an incorrect mount option was specified [root@gfs01 ~]# mount -t nfs -o vers=3 172.29.1.70:/gv0/folder /nfs/ [root@gfs01 ~]# Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1. create and start a volume 2. create a directory in the volume 3. create a symbolic link to the directory in the volume 4. try to mount from client the sub-directory via nfs an the name of the link Actual results: mount.nfs: an incorrect mount option was specified Expected results: mount to be successful Additional info: --- Additional comment from jiademing on 2014-01-08 04:15:52 CET --- I reproduce the issue, In my opinion, the link only point a relative path, then the NFS client can not analysis the relative path. But in glusterfs server volume, can not create a absolute path symlink for the real sub directories. --- Additional comment from John Skeoch on 2014-09-22 00:55:32 CEST --- User spradhan's account has been closed --- Additional comment from Niels de Vos on 2014-09-30 18:25:36 CEST --- It seems that the Linux kernel NFS-server allows mounting a symlink pointing to a directory. One requirement is that the target of the symlink points to a directory that is available on the export (I have not done any detailed permission checks).
Created attachment 953099 [details] Packet trace of gluster nfs server and kernel nfs server The information send to nfs client from kernel nfs server about the directory and symlinks is seems to be same. Where in the case of gluster nfs server , information differently to the nfs client about the directory and symlink. So client won't understand information about symlink from gluster nfs server and discard it The packet trace of client for kernel nfs and gluster nfs is given here
REVIEW: http://review.gluster.org/9052 (gNFS : mount via symbolic link does not work) posted (#1) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : mount via symbolic link does not work) posted (#2) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : mount via symbolic link does not work) posted (#3) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : mount via symbolic link does not work) posted (#4) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : mount via symbolic link does not work) posted (#5) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : make it possible to mount a subdir that actually is a symlink) posted (#6) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : make it possible to mount a subdir that actually is a symlink) posted (#7) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : make it possible to mount a subdir that actually is a symlink) posted (#8) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : make it possible to mount a subdir that actually is a symlink) posted (#9) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : make it possible to mount a subdir that actually is a symlink) posted (#10) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : make it possible to mount a subdir that actually is a symlink) posted (#11) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : make it possible to mount a subdir that actually is a symlink) posted (#12) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : make it possible to mount a subdir that actually is a symlink) posted (#13) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : make it possible to mount a subdir that actually is a symlink) posted (#14) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : make it possible to mount a subdir that actually is a symlink) posted (#15) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : make it possible to mount a subdir that actually is a symlink) posted (#16) for review on master by Niels de Vos (ndevos)
REVIEW: http://review.gluster.org/9052 (gNFS : make it possible to mount a subdir that actually is a symlink) posted (#17) for review on master by Niels de Vos (ndevos)
REVIEW: http://review.gluster.org/9052 (gNFS : make it possible to mount a subdir that actually is a symlink) posted (#18) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : make it possible to mount a subdir that actually is a symlink) posted (#19) for review on master by jiffin tony Thottan (jthottan)
REVIEW: http://review.gluster.org/9052 (gNFS : make it possible to mount a subdir that actually is a symlink) posted (#20) for review on master by jiffin tony Thottan (jthottan)
COMMIT: http://review.gluster.org/9052 committed in master by Niels de Vos (ndevos) ------ commit fdef42e82d66011a3a92c9c96db4ada2fa8d4814 Author: jiffin <jthottan> Date: Tue Nov 4 20:33:01 2014 +0530 gNFS : make it possible to mount a subdir that actually is a symlink We are using the function to export all sub-directories in a gluster volume via nfs. For real directories it works fine but if we have a symbolic link which points to the directory, it is not possible to mount that directory via nfs and the nameof the link. Kernel nfs resolves symlink handle to directoryhandle , similar gluster nfs should resolve the symbolic link handle into directory handle. Change-Id: I8bd07534ba9474f0b863f2335b2fd222ab625dba BUG: 1157223 Signed-off-by: jiffin tony thottan <jthottan> Reviewed-on: http://review.gluster.org/9052 Reviewed-by: soumya k <skoduri> Tested-by: Gluster Build System <jenkins.com> Reviewed-by: Jeff Darcy <jdarcy> Reviewed-by: Niels de Vos <ndevos>
This bug is getting closed because a release has been made available that should address the reported issue. In case the problem is still not fixed with glusterfs-3.7.0, please open a new bug report. glusterfs-3.7.0 has been announced on the Gluster mailinglists [1], packages for several distributions should become available in the near future. Keep an eye on the Gluster Users mailinglist [2] and the update infrastructure for your distribution. [1] http://thread.gmane.org/gmane.comp.file-systems.gluster.devel/10939 [2] http://thread.gmane.org/gmane.comp.file-systems.gluster.user