Reimplementing the Cedar file system using logging and group commit
SOSP '87 Proceedings of the eleventh ACM Symposium on Operating systems principles
Integrating security in a large distributed system
ACM Transactions on Computer Systems (TOCS)
The design and implementation of a log-structured file system
ACM Transactions on Computer Systems (TOCS)
Lightweight recoverable virtual memory
SOSP '93 Proceedings of the fourteenth ACM symposium on Operating systems principles
Lightweight recoverable virtual memory
ACM Transactions on Computer Systems (TOCS) - Special issue on operating systems principles
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As any battle-scarred veteran will testify, debugging a distributed system in production use is an enterprise fraught with great difficulty and frustration. By the time the system is released for production use, most of the easy bugs have been found and fixed. The remaining bugs are typically non-deterministic in nature, and will only manifest themselves under conditions of heavy use. Although rare, such bugs cannot be ignored because they often have serious consequences.In this position paper, we put forth the thesis that logging is a flexible, powerful, and convenient tool for debugging complex distributed systems. We substantiate this thesis in three steps. First, we argue that logging is particularly well suited for debugging distributed systems. Next, we observe that logging is already used in distributed systems for reasons independent of debugging. Finally, we show that the latter uses of logging can be transparently extended to support debugging.