Distributed lock manager: Difference between revisions

Revision as of 18:49, 23 March 2006

Revision as of 01:12, 24 March 2006

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A '''distributed lock manager''' (DLM) provides distributed applications with a means to synchronize their accesses to shared resources.

Each machine in a [[VAXclusterVMScluster]] runs a separate instance of the [[OpenVMS]] [[operating system]], but sees a unified view of all the disks attached to the cluster, with cluster-wide [[file locking]]. This is accomplished by using a DLM to not only manage the locks but also coordinate all disk access.

A DLM is also a key component of more ambitious [[Single-system image|single system image]] projects such as [[OpenSSI]].