Storage system and cluster maintenance

Details Storage system and cluster maintenance Storage system and cluster maintenance

2007-03-27

2007-03-27

Butler, Dennis M. (Department: 2115)

Electrical computers and digital processing systems: support

Digital data processing system initialization or configuration

C713S100000, C709S220000

Reexamination Certificate

active

10426994

ABSTRACT:
A method and system for maintaining a discovery record and a cluster bootstrap record is provided. The discovery record enables shared storage system discovery and the cluster bootstrap record enables cluster discovery and cooperative cluster startup. The cluster bootstrap record is updated in response to a change in the cluster membership. The update is performed by a cluster leader in the form of a transactionally consistent I/O update to the cluster bootstrap record on disk and a distributed cache update across the cluster (30, 50). The update is aborted (80) in the event of a failure in the cluster leaving the cluster bootstrap record in a consistent state. In the event of a disastrous cluster and/or storage system failure, the discovery record may be recovered (228) from a restored storage system (214) and the cluster bootstrap record may be reset to install a new cluster in the old cluster's place (232).

REFERENCES:
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patent: 6662219 (2003-12-01), Nishanov et al.
patent: 6966060 (2005-11-01), Young et al.
patent: 2004/0153841 (2004-08-01), Beck

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