[Samba] NFS quotas: truncated files without warning

[Jeremy Allison]

On Fri, Jun 15, 2007 at 06:44:47PM +0200, David Losada wrote:
> Hi,
> 
> we have some Samba instances serving files from a bunch of NFS exports
> provided by a NAS appliance. Coming from Solaris, we recently have been
> testing to run our Samba servers on Linux (RHEL 4, Samba 3.0.10-1.4E.12.2).
> 
> One caveat we didn't expect is that, on Linux, NFS quota errors are
> reported on calls to close() or fsync(), but not on calls to write().
> Through smbclient, we have checked that Samba correctly reports the
> error to the client (NT_STATUS_DISK_FULL closing remote file ...).
> However, Windows 2000 clients silently ignore this error when closing
> the file, leaving the file truncated with no warning to the user
> (something we really don't want to happen!)
> 
> We have tried "strict sync = yes" and "sync always = yes" configuration
> directives, to no avail. Have also googled trying to find an answer, but
> couldn't find one.
> 
> I don't think we are the only ones with this kind of setup.. anyone has
> an idea of how to handle this scenario correctly?

Try "strict allocate = yes" to which will cause Samba
to actually allocate space on a Windows client "set allocation
size" call - this should fail if over quota and be at the
right place for the Windows clients to see it.

Jeremy.