[Bug 210741] Re: no way to read and write files on mounted samba share on hardy

[tonyw]

There certainly appears to be a problem with the Hardy CIFS/SMBFS
implementation. For me it has broken a wine application that used
smbfs/cifs to access a remote set of files.

We use an old Windows based account packages (TAS Books). Works fine and
runs under Linux/wine, so no real need to replace it. It uses a Btrieve
database implemented as a set of files in the same directory. In our
deployment, the database files are on a remote server with the directory
mounted as a remote share. This allows access from several clients (but
not simultaneous). The setup worked fine under ubuntu 7.10. Both server
and clients were upgraded to Hardy last weekend and this broke the
application. It claims that the remote files are being used by a
"Maintenance Utility"- although other wine apps can open them for
reading.

The fstab entry seems pretty standard:

//myserver/tasdata      /home/tony/tasdata      cifs
credentials=/etc/samba/mysecret,uid=1000,gid=1000,auto,rw       0
0

Restarting a client with the 2.6.22 kernel (no other change) fixes the
problem and the application works. So the problem (change) seems to be
in the kernel or one of its loadable modules.

The mounts appear to work, regardless of whether they are declared as
cifs or smbs and the remote files are accessible through bash and text
editors. All permissions appear correct - but something has changed -
and that something breaks the application. As TAS Books is closed
source, it's difficult to know what it is doing and why it can't see the
files. My guess is that it can't get a file lock on one or more files -
but that's just a guess. Alternatively, it may be something to do with
opening a file for read/write.

Tony

-- 
no way to read and write files on mounted samba share on hardy
https://bugs.launchpad.net/bugs/210741
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