[Bugs] [Bug 1315422] New: GlusterFS Samba VFS

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1315422

            Bug ID: 1315422
           Summary: GlusterFS Samba VFS
           Product: GlusterFS
           Version: 3.6.9
         Component: gluster-smb
          Severity: medium
          Assignee: bugs at gluster.org
          Reporter: stuartjames at kaycero.com
                CC: bugs at gluster.org
   External Bug ID: Samba Project 11647



Description of problem:


Version-Release number of selected component (if applicable):

Centos 7 latest
glusterfs-api-3.6.9-1.el7.x86_64
glusterfs-server-3.6.9-1.el7.x86_64
glusterfs-libs-3.6.9-1.el7.x86_64
glusterfs-3.6.9-1.el7.x86_64
glusterfs-cli-3.6.9-1.el7.x86_64
glusterfs-fuse-3.6.9-1.el7.x86_64

samba-vfs-glusterfs-4.2.3-11.el7_2.x86_64
samba-libs-4.2.3-11.el7_2.x86_64
samba-client-libs-4.2.3-11.el7_2.x86_64
samba-vfs-glusterfs-4.2.3-11.el7_2.x86_64
samba-common-tools-4.2.3-11.el7_2.x86_64
samba-common-libs-4.2.3-11.el7_2.x86_64
samba-4.2.3-11.el7_2.x86_64
samba-common-4.2.3-11.el7_2.noarch


How reproducible:
On demand 


Steps to Reproduce:
1.Setup GlusterFS / Samba configuration as per documentation provided for
Gluster 3.0 / 3.1
https://access.redhat.com/documentation/en-US/Red_Hat_Storage/3/html/Administration_Guide/sect-SMB.html
2. Attempt to mount samba share from client (mount -t cifs -o guest,sec=none
//gluster2/gluster-mythinvol1 /mnt/samba/mythinvol1)


Actual results:
Samba share is not mountable due to error between samba and gluster

[root at glusterclient1 ~]# mount -t cifs -o guest,sec=none
//gluster2/gluster-mythinvol1 /mnt/samba/mythinvol1/
mount error(13): Permission denied


Expected results:
Samba share is mounted


Additional info:

Error log
==> /var/log/samba/log.glusterclient1 <==
[2016/03/07 16:37:08.250984,  0]
../source3/modules/vfs_glusterfs.c:257(vfs_gluster_connect)
  mythinvol1: Initialized volume from server localhost
[2016/03/07 16:37:08.260580,  2]
../source3/smbd/service.c:862(make_connection_snum)
  glusterclient1 (ipv4:192.168.0.121:39139) connect to service
gluster-mythinvol1 initially as user nobody (uid=99, gid=99) (pid 28656)
[2016/03/07 16:37:10.848514,  2] ../source3/smbd/vfs.c:1240(check_reduced_name)
  check_reduced_name: Bad access attempt: * is a symlink outside the share path
  conn_rootdir =/
  resolved_name=/./*
[2016/03/07 16:39:25.076492,  2] ../source3/smbd/service.c:1138(close_cnum)
  glusterclient1 (ipv4:192.168.0.121:39139) closed connection to service
gluster-mythinvol1


To fix this error i added global configuration to /etc/samba/smb.conf and
restarted smb

follow symlinks = yes
wide links = yes
unix extensions = no

After which following command works
[root at glusterclient1 ~]# mount -t cifs -o guest,sec=none
//gluster2/gluster-mythinvol1 /mnt/samba/mythinvol1/

└─/mnt/samba/mythinvol1          //gluster2/gluster-mythinvol1
                                            cifs          
rw,relatime,vers=1.0,cache=strict,domain=GLUSTER2,uid=0,noforceuid,gid=0,noforcegid,addr=192.168.0.112,file_mode=0755,dir_mode=0755,nounix,serverino,rsi


Additionally i found an error information describing this from Samba
https://attachments.samba.org/attachment.cgi?id=11744


Seems to me without these parameters either documented or defaults and
according to documentation the functionality does not work.

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