Recovery and relocation of a distributed name service in a cluster filesystem
First Claim
1. A method of administering a distributed name service for a cluster filesystem accessed by computer system nodes sharing direct read/write access to storage devices via a storage area network, comprising:
- automatically updating entries related to a distributed name service stored on the computer system nodes upon one of relocation of a server for the cluster filesystem and recovery of a cluster if no node in the cluster provides the server for the cluster filesystem.
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Accused Products
Abstract
A cluster of computer system nodes share direct read/write access to storage devices via a storage area network using a cluster filesystem. During relocation of a server for a distributed name service and recovery of a cluster, entries related to the distributed name service for filesystems is updated. During relocation, a new server for a filesystem informs all nodes in the cluster of the new server'"'"'s location. During recovery, a process executing on each node deletes entries related to the distributed name service for any filesystem that does not have a server in the recovering cluster.
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Citations
7 Claims
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1. A method of administering a distributed name service for a cluster filesystem accessed by computer system nodes sharing direct read/write access to storage devices via a storage area network, comprising:
automatically updating entries related to a distributed name service stored on the computer system nodes upon one of relocation of a server for the cluster filesystem and recovery of a cluster if no node in the cluster provides the server for the cluster filesystem. - View Dependent Claims (2, 3, 4)
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5. A method of automatically recovering a cluster filesystem accessed by computer system nodes sharing direct read/write access to storage devices via a storage area network, comprising:
executing a process on each of the computer system nodes in a recovering cluster to delete entries related to a distributed name service for any filesystem for which no server is provided by any of the computer system nodes in the recovering cluster.
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6. A method of relocating a server of a filesystem in a cluster filesystem accessed by computer system nodes sharing direct read/write access to storage devices via a storage area network, comprising:
sending, during relocation of the cluster filesystem, location information of a new server for the filesystem in a message to the computer system nodes from one of a previous server for the filesystem and the new server for the filesystem. - View Dependent Claims (7)
Specification