The following VxFS features are not supported in a Sun Cluster 3.0 configuration.
Quick I/O
Snapshots
Storage checkpoints
Cache advisories (these can be used, but the effect will be observed on the given node only)
VERITAS CFS (requires VERITAS cluster feature & VCS)
All other VxFS features and options that are supported in a cluster configuration are supported by Sun Cluster 3.0 software. See VxFS documentation and man pages for details about VxFS options that are or are not supported in a cluster configuration.
The following VxFS-specific mount options are not supported in a Sun Cluster 3.0 configuration.
convosync (Convert O_SYNC)
mincache
qlog, delaylog, tmplog
For a VxFS cluster file system, you must globally mount and unmount the cluster file system from the primary node (the node that masters the disk on which the VxFS file system resides) to ensure that the operation succeeds. A VxFS cluster file system mount or unmount operation that is performed from a secondary node might fail.
For a VxFS cluster file system, you must issue ioctls only from the primary node. If you do not know whether an administration command involves ioctls, issue the command from the primary node.
To administer a VxFS cluster file system, you must perform all VxFS administration commands from the primary node of the VxFS cluster file system.