I have an issue that is not all that unique, so I'm hoping someone has done it before. On the client end I have some very old RedHat based systems. On the server end is a Windows 2008 system running NFS server software. The clients mount the server resource as an NFS2 mount but some compliance issues were discovered with the setup. For various reasons, updating the client is not an option at this time. The fix the issue, the server needs to export NFS3 mounts but the clients do not support that version. As a workaround, I considered adding a third system running CentOS that would mount the server and re-export it to the clients. This will mitigate the current issue related to visibility of the share from certain groups. It does not appear possible, using the current kernel-based NFS server, to export an NFS-mounted filesystem. However, it appears that there is a FUSE NFS project that might work. Does anyone have any experience with such a setup?
re-exporting a nfs mount with the kernel nfs server works for me. On 07/13/2010 04:01 PM, Kwan Lowe wrote:> I have an issue that is not all that unique, so I'm hoping someone has > done it before. > > On the client end I have some very old RedHat based systems. On the > server end is a Windows 2008 system running NFS server software. The > clients mount the server resource as an NFS2 mount but some compliance > issues were discovered with the setup. For various reasons, updating > the client is not an option at this time. The fix the issue, the > server needs to export NFS3 mounts but the clients do not support that > version. As a workaround, I considered adding a third system running > CentOS that would mount the server and re-export it to the clients. > This will mitigate the current issue related to visibility of the > share from certain groups. > > It does not appear possible, using the current kernel-based NFS > server, to export an NFS-mounted filesystem. However, it appears that > there is a FUSE NFS project that might work. Does anyone have any > experience with such a setup? > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >
Kwan Lowe wrote:> I have an issue that is not all that unique, so I'm hoping someone has > done it before. > > On the client end I have some very old RedHat based systems. On the > server end is a Windows 2008 system running NFS server software. The > clients mount the server resource as an NFS2 mount but some compliance > issues were discovered with the setup. For various reasons, updating > the client is not an option at this time. The fix the issue, the > server needs to export NFS3 mounts but the clients do not support that > version. As a workaround, I considered adding a third system running > CentOS that would mount the server and re-export it to the clients. > This will mitigate the current issue related to visibility of the > share from certain groups.<snip> You might look at unfs, which can re-export. I used it with glusterfs, so as to have a head node. mark
On Jul 13, 2010, at 10:01 AM, Kwan Lowe <kwan.lowe at gmail.com> wrote:> I have an issue that is not all that unique, so I'm hoping someone has > done it before. > > On the client end I have some very old RedHat based systems. On the > server end is a Windows 2008 system running NFS server software. The > clients mount the server resource as an NFS2 mount but some compliance > issues were discovered with the setup. For various reasons, updating > the client is not an option at this time. The fix the issue, the > server needs to export NFS3 mounts but the clients do not support that > version. As a workaround, I considered adding a third system running > CentOS that would mount the server and re-export it to the clients. > This will mitigate the current issue related to visibility of the > share from certain groups. > > It does not appear possible, using the current kernel-based NFS > server, to export an NFS-mounted filesystem. However, it appears that > there is a FUSE NFS project that might work. Does anyone have any > experience with such a setup?Can the clients do CIFS mounts of the Windows share? -Ross
At Tue, 13 Jul 2010 10:01:18 -0400 CentOS mailing list <centos at centos.org> wrote:> > I have an issue that is not all that unique, so I'm hoping someone has > done it before. > > On the client end I have some very old RedHat based systems. On the > server end is a Windows 2008 system running NFS server software. The > clients mount the server resource as an NFS2 mount but some compliance > issues were discovered with the setup. For various reasons, updating > the client is not an option at this time. The fix the issue, the > server needs to export NFS3 mounts but the clients do not support that > version. As a workaround, I considered adding a third system running > CentOS that would mount the server and re-export it to the clients. > This will mitigate the current issue related to visibility of the > share from certain groups. > > It does not appear possible, using the current kernel-based NFS > server, to export an NFS-mounted filesystem. However, it appears that > there is a FUSE NFS project that might work. Does anyone have any > experience with such a setup?It really is NOT a good idea to re-export a network-mounted file system. Is there some reason you cannot simply migrate the data on the Windows 2008 server to a new CentOS system? Note that you can also install Samba on the new CentOS system, which will support any MS-Windows clients served by the Windows 2008 server. One possibity would be to install a virtual CentOS server on the Windows 2008 server and have it *replace* the NFS server running on the Windows 2008 server. You would need to map the file systems to be exported as local/virtual file systems on the virtual CentOS server.> _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > >-- Robert Heller -- Get the Deepwoods Software FireFox Toolbar! Deepwoods Software -- Linux Installation and Administration http://www.deepsoft.com/ -- Web Hosting, with CGI and Database heller at deepsoft.com -- Contract Programming: C/C++, Tcl/Tk
On 07/13/2010 07:01 AM, Kwan Lowe wrote:> On the client end I have some very old RedHat based systems. On the > server end is a Windows 2008 system running NFS server software. The > clients mount the server resource as an NFS2 mount but some compliance > issues were discovered with the setup.I'm not sure I can help, but I'm very curious. How old are these systems, that they don't support NFSv3? And what kind of compliance issues? I don't know of any security enhancements that were introduced in NFSv3.