fsclustadm commands are important for configuring cluster file systems.
mount command with the
cluster option lets you access shared file systems.
mount_vxfs(1M) manual page.
fsclustadm command reports various attributes of a cluster file system. Using
fsclustadm you can show and set the primary node in a cluster, translate node IDs to host names and vice versa, list all nodes that currently have a cluster mount of the specified file system mount point, and determine whether a mount is a local or cluster mount. The
fsclustadm command operates from any node in a cluster on which the file system is mounted, and can control the location of the primary for a specified mount point.
fsclustadm(1M) manual page.
fsadm command can be invoked from the primary or secondary node.
fsadm(1M) manual page.
Any UNIX command that can write to a raw device must be used carefully in a shared environment to prevent data from being corrupted. For shared VxVM volumes, SFCFS provides protection by reserving the volumes in a cluster to prevent VxFS commands, such as
mkfs, from inadvertently damaging a mounted file system from another node in a cluster. However, commands such as
dd execute without any reservation, and can damage a file system mounted from another node. Before running this kind of command on a file system, be sure the file system is not mounted on a cluster. You can run the
mount command to see if a file system is a shared or local mount.