Replacing a VOB server host for a NAS device

When you locate VOB storage on a NAS device, you can easily replace the VOB host for any VOB on the NAS device with another VOB host of the same architecture without actually moving the VOB storage.

1. Lock the VOB
2. Unmount the VOB as needed on dynamic view hosts.
3. Optional: (If applicable) Disable VOB snapshots on the current host.
   If VOB database snapshots are enabled for the VOB, disable them with this command:

   vob_snapshot_setup rmparam /vobs/libpub

4. Remove the VOB tag and unregister the VOB.
   Use the DevOps Code ClearCase Administration Console or the following commands:

   cleartool rmtag –vob –all /vobs/libpub
   cleartool unregister –vob /net/nasdevice/vobstg/libpub.vbs

5. Terminate the VOB’s server processes on the current host.
   • On a host running Linux or the UNIX system, search the process table for the vob_server and vobrpc_server processes that service the VOB. Run the Linux and UNIX system-based ps command and search its output for processes associated with libpub.vbs. Use the Linux and UNIX system-based kill command to terminate any such processes.
   • On a Windows® host, stop and restart DevOps Code ClearCase.
6. Register the VOB and create a new VOB tag.
   Use the DevOps Code ClearCase Administration Console or the following commands:

   cleartool register –vob –host vobsvr1  –hpath /net/nasdevice/vobstg/libpub.vbs \ –gpath /net/nasdevice/vobstg/libpub.vbs /net/nasdevice/vobstg/libpub.vbs
   cleartool mktag –vob –replace –host vobsvr1 –tag /vobs/libpub \ –hpath /net/nasdevice/vobstg/libpub.vbs –gpath \ /net/nasdevice/vobstg/libpub.vbs /net/nasdevice/vobstg/libpub.vbs

7. Unlock the VOB.
8. Mount the VOB as needed on dynamic view hosts.
9. Optional: Enable VOB snapshots on the new host.
   If you want to enable VOB database snapshots on the new VOB host, do so with vob_snapshot_setup modparam, supplying the appropriate parameters.