On Wed, Nov 18, 2009 at 01:49:51PM -0500, [email protected] wrote: > We have SAMBA 3.0.33 running on RedHat 5. We are sharing home directories > to users via Samba using the [homes] share. The home directories reside on > a Netapp filer, (actually multiple), and are accessed by the Samba server > over NFS. When users try to open a Microsoft Excel file from a Windows XP > SP3 client, it is always opening as read-only because it thinks the file > is locked. We have done some research on this as well as have discussed > this with RedHat and found that this is a result of "posix locking" which > is set to "yes" by default.
Re-exporting NFS imports is a really, really bad idea. Why don't you enable CIFS on the NetApp filers or even better get rid of them at all and move the data to the Samba servers themselves. > We have confirmed that turning it off does make the problem go away, > however, would like to know if this is safe to do in this > configuration/scenario. I've come across some references on this but > nothing definitive to whether this would be ok or if this would be asking > for trouble. Given that the Samba server access and other potential access > to the files on the Netapp would be over NFS would the filer take care of > this sanely? Well, if you have concurrent access to the same files, then you should not disable posix locking. But this very much depends on the applications you are running. Much more important are the kernel oplocks which don't work via NFS either. Volker
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