samba - Jan 2008 - Multiple mount instead of remount?

I'm having issues trying to remount any shares using samba.

Super Short version
mount -o remount /some_windows_share creates a duplicate mount instead
of properly remounting.

Full details...
I have many shares served off of NT4 boxes, mounted via samba on a
linux box (RHEL 4).
Since long dormant (>12 hour) shares from one server in particular
always have problems for a few seconds when accessing files, I altered
my scripts to mount -o remount.  I expected it would freshen the
mount.  Instead of doing a remount however, it appears to be mounting
_over_ the original.   Not really what I wanted.  Any idea why it's
doing this?  I wanted to avoid doing an unmount then a mount, as some
of these scripts may, on occasion, be run in parallel.  I know at
least on local drives remounting while in use (at least for read
operations), doesn't appear to cause problems..

Thanks,
        Kyle

PS: I seem to be having trouble posting to this list, so if this
message appears (in various forms) more than once, I apologize.

Le lundi 07 janvier 2008, Kyle Schmitt a ?crit?:
> I'm having issues trying to remount any shares using samba.
> 
> Super Short version
> mount -o remount /some_windows_share creates a duplicate mount instead
> of properly remounting.
> 
> Full details...
> I have many shares served off of NT4 boxes, mounted via samba on a
> linux box (RHEL 4).
> Since long dormant (>12 hour) shares from one server in particular
> always have problems for a few seconds when accessing files, I altered
> my scripts to mount -o remount.  I expected it would freshen the
> mount.  Instead of doing a remount however, it appears to be mounting
> _over_ the original.   Not really what I wanted.  Any idea why it's
> doing this?  I wanted to avoid doing an unmount then a mount, as some
> of these scripts may, on occasion, be run in parallel.  I know at
> least on local drives remounting while in use (at least for read
> operations), doesn't appear to cause problems..
> 
You can always make these scripts avoid running in parallel in the first 
place, say, using a sentinel file (not under the mount point of course).

As to why smbfs (or cifs?) acts this way, good question... On both a local, 
ext3 mounted filesystem and a remote, NFS mounted filesystem, when I attempt 
to remount, I don't see any duplicates.

But what does /proc/mounts say? It may well be different of what the mount 
command says, since mount reads /etc/mtab.

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