Failure hierarchy in a cluster filesystem
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United States of America Patent
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Issued Date -
Aug 5, 2004
app pub date -
Jan 16, 2003
filing date -
Jan 16, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A cluster of computer system nodes share direct read/write access to storage devices via a storage area network using a cluster filesystem. In response to the failure of a node, a pre-defined order of procedures is attempted, executing one procedure at a time in the order defined, until successful completion of one of the procedures. Preferably the order is based on input from a system administrator, or a default order when no input has been provided by the system administrator. The procedures may include hardware reset of a failed node, disabling access by the failed node to the storage devices shared by the nodes in the cluster, terminating shared filesystem services on the failed node and terminating shared filesystem services on all of the nodes in the cluster.
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