International Business Machines Corporation

Jacob Morris Tick

Frank Bernhard Schmuck

John Thomas Olson

Christina Ann Lara

Deepavali M Bhagwat

Monica Jean Lemay

Shekhar Amlekar

April Brown

Todd Tosseth

Luis Teran

A computer-implemented method according to one embodiment includes identifying a node within a clustered system, determining a role of the node, based on one or more characteristics of the node, and setting one or more firewall parameters for the node within the clustered system, based on the role of the node.

Adjusting firewall parameters based on node characteristics

Embodiments include a method for fault tolerance in the delivery of event information within a file system cluster. One or more processors to determine event information associated with file system activity performed by a node of the cluster. The one or more processors add the event information to an event log buffer in memory. The one or more processors receive a first log sequence number (LSN) associated with flushing of recovery information from a recovery log buffer. The one or more processors determine the event information in the event log buffer having a log sequence number less than or equal to the first log sequence number, and determining the event information includes log sequence numbers less than or equal to the first log sequence number, the one or more processors flush the corresponding event information from the event log buffer to disk storage.

Reliable delivery of event notifications from a distributed file system

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Tucson, AZ, United States of America

Jacob Morris Tick