samba - Dec 2014 - Samba share over a /net automount shows only 1 entry per directory when connecting to a RHEL NFS export

I have very large samba installations running off Solaris 10u11 - very stable -
and AD integrated with the OS.
A new problem has arisen I hope someone can shed light one when accessing
autmounted /net host directories.  Running Samba 3.6.24 on Solaris  10u11 x86

Server A?? hosts logs files and can nfs mount other servers to consume their
logs via the automount /net path.  Users want to read the live logs through the
automounts as well now from a common portal and samba is the perfect solution.
We will eventually only give users access to symlinks into the specific
directories and not the entire server but we've SMB shared the whole of /net
to show the issue generically. Server A will ultimately point into the
/net/<server>/<log dir path> on the remote servers.
Ignore the symlinks for now because the issue occurs when smb sharing the base
/net directory and yes, we are well familiar with samba's wide links
functionality. The problem manifests at a lower level.

So:
>From within Server A's shell, cd /net/<server B>/.. Shows all
directories exported by server B without any issues on all OS's being
mounted dynamically via automount.
Running samba over the same ?/net directory shows everything perfectly when
server B (the nfs servers being connected to) are Solaris or SLES but on RHEL
(all versions), samba only shows arbitrary single files per directory.
Note the previous line that everything is perfect from the command line of
Serevr A where samba is running.

How is it possible for the OS to show everything normally but not samba - is
samba calling different IO libraries to get a directory's content than the
OS itself?
We initially though that the RHEL boxes doing the nfs sharing were the issue but
no combination of exportfs option makes a difference. Anyway, the nfs files show
perfectly when listing the directories from the samba server A

Here's the SMB.conf which is AD integrated - permissions are not the issue
because a "force user = root" makes no difference and the export
permissions on Server B are completely open. Server A can read/write the NFS
/net directories perfectly.
Ignore the security concerns here of Server A having complete root r/w to Server
B's entire filesystem. This is a POC environment to prove the issue.

Detailed logs of a level 10 access of the /net share to a server which is
sharing everything show that samba does a search of the correct path with the *
wildcard.  It oly get's a single entry back - but only for RHEL servers.
Others are fine.
We've tried this in multiple RHEL servers with the same effect.? Connecting
to a Suse or Solaris server shows the entire root of the server (or all the
exported shasres and their dies in full.

The server exporting it's root (/) is doing so with *(rw) and adding
crossmnt, no_hide and no_sub_tree_checking in the /etc/exports makes no
difference and indeed a dir list of the /net/<server B> shows everything
normally with r/w as would be expected from the OS
Only when samba accesses that share does it stop processing directory entries
after the first one - which is mostly the file last modified but not always.
Can anyone replicate this issue?

Here's the smb.conf:

[global]
??????? security??????????????? = ads
??????? workgroup?????????????? = IB
??????? realm??????????????? ???= INVESTEC.CORP
??????? smb encrypt???????????? = yes
??????? announce version??????? = 6.1
??????? server string?????????? = "Loghost Server"
??????? netbios name??????????? = invmappllog3
??????? netbios aliases???????? = invjhbpllog
??????? interfaces????????????? = 10.0.42.102/24
??????? allow trusted domains?? = yes
??????? log file??????????????? = /var/log/samba/%I.log
??????? log level?????????????? = 10
??????? syslog????????????????? = 1
??????? max log size??????????? = 1000000
??????? machine password timeout = 0
??????? kerberos method???????? = dedicated keytab
??????? dedicated keytab file?? = /etc/krb5.keytab
??????? preserve case?????????? = yes
??????? unix extensions???????? = no
??????? getwd cache???????????? = yes
? ??????case sensitive????????? = no
??????? read raw??????????????? = yes
??????? write raw?????????????? = yes
??????? bind interfaces only??? = yes
??????? level2 oplocks????????? = yes
??????? domain master?????????? = no
??????? local master??????????? = yes
??????? preferred master??????? = no
??????? enhanced browsing?????? = yes
??????? guest account?????????? = nobody
??????? map to guest??????????? = bad uid
??????? host msdfs????????????? = no

[Test]
??????? comment???????????????? = "Logvol Net (%D %U %G)"
??????? fstype?????? = NTFS
??????? path???????? = /net
??????? browseable?? = yes
??????? writeable??? = no
??????? create mask? = 664
??????? force user = root
??????? directory mask????????? = 775
??????? guest ok??????????????? = no
??????? aio write size????????? = 16384
??????? aio read size?????????? = 8192
??????? follow symlinks???????? = yes
??????? wide links = yes
??????? vfs object????????????? = full_audit
??????? full_audit:prefix?????? = %h,%u,%I,%S,%G
??????? full_audit:failure????? = connect mkdir rmdir pwrite rename chdir
??????? full_audit:success????? = connect disconnect mkdir rmdir rename
??????? full_audit:facility???? = local5
??????? full_audit:priority???? = notice


invmappllog3:root:/net/iubsjhbvlbaas> ls
bin???????? dev???????? IUBS??????? loghost???? misc??????? opt????????
sbin??????? sys???????? var
boot??????? etc???????? lib???????? lost+found? mnt???????? proc???????
selinux???? tmp
cgroup????? home??????? lib64?????? media?????? net???????? root???????
srv???????? usr


When accessing the Test share via Samba, it only shows one directory or file in
each folder:  In this case the MISC directory which is an NFS share in it's
own rights.


Anyone had this problem or knows if it is an acknowledged issue with samba
reading /net on Solaris when connecting to RHEL - which I admit sounds
ridiculous. Can't find anything relevant on bugzilla.
The fact is it works perfectly connecting to other OS's so we are inclined
to thin k the issue is RHEL nfs sharing - but that cannot be because the OS
shows everything normally - only samba has this issue.

Regards,
Brandon?
?




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