samba - Nov 2006 - Shadow Copy Client blank, with error in logs

One computer will show the previous versions of files just fine, but
every other computer I've installed the Microsoft Shadow Copy Client on
will not show any previous versions.  The Previous Versions tab is just
blank.  In the samba log, I get this:

 

[2006/11/28 12:02:02, 0]
modules/vfs_shadow_copy.c:shadow_copy_opendir(81)

  shadow_copy_opendir: SMB_VFS_NEXT_OPENDIR() failed for
[Folder/file.txt]

 

 

This is logging in as the same user on each machine.

 

 

James Dinkel

Network Engineer

Butler County of Kansas

 

There are 10 types of people in the world:  those who understand binary,
and those who don't.

There's a module for vss on Linux???? 

-----Original Message-----
From: samba-bounces+m.waterman=xs4all.nl@lists.samba.org
[mailto:samba-bounces+m.waterman=xs4all.nl@lists.samba.org] On Behalf Of
James A. Dinkel
Sent: Tuesday, November 28, 2006 7:19 PM
To: samba@lists.samba.org
Subject: [Samba] Shadow Copy Client blank, with error in logs

One computer will show the previous versions of files just fine, but every
other computer I've installed the Microsoft Shadow Copy Client on will not
show any previous versions.  The Previous Versions tab is just blank.  In
the samba log, I get this:

 

[2006/11/28 12:02:02, 0]
modules/vfs_shadow_copy.c:shadow_copy_opendir(81)

  shadow_copy_opendir: SMB_VFS_NEXT_OPENDIR() failed for [Folder/file.txt]

 

 

This is logging in as the same user on each machine.

 

 

James Dinkel

Network Engineer

Butler County of Kansas

 

There are 10 types of people in the world:  those who understand binary, and
those who don't.

 

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On Tue, Nov 28, 2006 at 12:19:15PM -0600, James A. Dinkel
wrote:
> One computer will show the previous versions of files just fine, but
> every other computer I've installed the Microsoft Shadow Copy Client on
> will not show any previous versions.  The Previous Versions tab is just
> blank.  In the samba log, I get this:
> 
>  
> 
> [2006/11/28 12:02:02, 0]
> modules/vfs_shadow_copy.c:shadow_copy_opendir(81)
> 
>   shadow_copy_opendir: SMB_VFS_NEXT_OPENDIR() failed for
> [Folder/file.txt]
> 
>  
> 
>  
> 
> This is logging in as the same user on each machine.
Can you send in a debug level 10 please ?

Jeremy.

Is this a bug?!

Ok, upon further investigation, I've discovered that the Previous
Versions does not work when access the share through a "nested" drive
mapping.  By "nested" I mean we have the H: drive in Windows mapped to
\\SambaServer\share\DepartmentFolder.  If I create a drive mapping, say
X: drive to \\SambaServer\share, then the Previous Version show up when
going through the X: drive (or the UNC path) but NOT when going through
the H: drive.

However, I have found a fix for this (I'll get to it in a little bit),
but it's sloppy.  This is a big problem for us, because all our users
have the H: drive mapped to a folder below the share based on what
department they are in.

So the fix is:  I created a symlink under the nested folder
("DepartmentFolder" in this case) that pointed to the same folder in
the
snapshot.  I gave the symlink the "@GMT-" name that the shadow_copy
module requires, and of course created script that destroys and creates
this link along with the snapshots.

I don't know if this is an issue with the Previous Versions client, but
I would think the shadow_copy module could be patched so that it knows
to look back at the root of the file share for the snapshot.

James Dinkel

Well, it looks like this only fixed it for admin users.  The Previous
Versions is still showing up blank for regular valid users.  I'll look
more into it, and try to get a debug 10 log tomorrow.

James Dinkel

Ok, I figured this out, too.  I expected that THIS was a permissions
issue.  I add o+x permission to the folder containing the snapshots and
all is well.

I still wish though, that there was a better way to taking care of the
nested drive mappings than having to create a symlink for every drive
mapping... :(

James Dinkel

-----Original Message-----
From: James A. Dinkel

Well, it looks like this only fixed it for admin users.  The Previous
Versions is still showing up blank for regular valid users.  I'll look
more into it, and try to get a debug 10 log tomorrow.

James Dinkel