I would like some assistance with the following VCS/VXVM scenario:
We have a simple VXVM volume created on a SAN-based LUN with the following characteristics: - RAID management for the volume is being done within the EMC frame. - The volume is part of a VCS resource group. - Only one system within the resource group will have the volume mounted read-write. - The file system on the volume is UFS.
If we would like to allow two systems not currently running VCS to mount the volume read-only (they will never write to this volume), would we need anything other than VXVM to properly access the volume?
Hi, you cannot do that with VxVM. You would need Cluster Volume Manager, which is an add-on license to VxVM. You will add much more complexity into your environment. Is this really necessary ?
Thanks for the feedback on this! This scenario is not absolutely necessary, but it would fit well with our overall system architecture: The volume in question would be owned r/w by a system participating in a cluster; it will act as a respository for a large daily data feed. The two systems that need to access this same volume r/o will be processing the data from the repository. We wanted to rule out NFS for this to keep from moving huge quantities of data across the IP network.
I agree with the comment on complexity; we are hoping to avoid using CVM primarily for that reason.
I would think that VXVM would not be as restrictive since this is only a r/o mount.
