High-availability cluster virtual server system

A file server system, comprising:

• two or more nodes, each node being configured to run a virtual server having as exclusive resources a virtual IP address and one or more file systems, wherein an exclusive resource of the virtual server can be seen by the virtual server and not by another virtual server, and each node being configured with two or more physical ports;
• wherein a first node is further configured to:
• detect a failure of a physical port on the first node;
• determine whether any other physical port on the first node is good;
• migrate all virtual IP addresses associated with the filed physical port to a good physical port on the first node if there is such a good port;
• and
• migrate all virtual IP addresses associated with the failed physical port along with all virtual servers attached to such virtual IP addresses to a different, second node if there is no such good port on the first node.

A computer program product, tangibly stored on a computer-readable medium, for execution in a node of a file server system cluster, the product comprising instructions operable to cause a programmable processor to:

• detect a failure of a physical port on a first node of the cluster, wherein one or more virtual IP addresses are associated with the physical port, at least one of the one or more of the virtual IP addresses being an exclusive resource to a virtual server that includes as exclusive resources one or more file systems, wherein an exclusive resource of a virtual server can be seen by the virtual server and not by another virtual server;
• determine whether any other physical port on the first node is good;
• migrate all virtual IP addresses associated with the failed physical port to a good physical port on the first node if there is such a good port;
• and
• migrate all virtual IP addresses associated with the failed physical port along with all virtual servers attached to such virtual IP addresses to a different, second node if there is no such good port on the first node.

A computer program product, tangibly stored on a computer-readable medium, for execution in a file server node in which one or more virtual servers each have one or more virtual IP addresses associated with physical ports, the product comprising instructions operable to cause a programmable processor to:

• detect a failure of a physical port on a file server node, the node having two or more physical ports, the node having one or more virtual servers each having as exclusive resources one or more virtual IP addresses associated with physical ports and one or more file systems, wherein an exclusive resource of a virtual server can be seen by the virtual server and not by another virtual server;
• identify one or more other physical ports on the file server node as being good;
• and
• migrate each virtual IP addresses associated with the failed physical port to a good physical port on the file server node.