Error recovery in a storage cluster

摘要

A plurality of storage nodes within a single chassis is provided. The plurality of storage nodes is configured to communicate together as a storage cluster. The plurality of storage nodes has a non-volatile solid-state storage for user data storage. The plurality of storage nodes is configured to distribute the user data and metadata associated with the user data throughout the plurality of storage nodes, with erasure coding of the user data. The plurality of storage nodes is configured to recover from failure of two of the plurality of storage nodes by applying the erasure coding to the user data from a remainder of the plurality of storage nodes. The plurality of storage nodes is configured to detect an error and engage in an error recovery via one of a processor of one of the plurality of storage nodes, a processor of the non-volatile solid state storage, or the flash memory.

主权项

1. A plurality of storage nodes within a single chassis, comprising:
the plurality of storage nodes configurable to communicate together as a storage cluster, each of the plurality of storage nodes having a non-volatile solid-state storage for user data storage, the non-volatile solid state storage including flash memory, the plurality of storage nodes configured to distribute the user data and metadata associated with the user data throughout the plurality of storage nodes, with erasure coding of the user data; the plurality of storage nodes configurable to recover from failure of two of the plurality of storage nodes by applying the erasure coding to reading the user data from a remainder of the plurality of storage nodes; and the plurality of storage nodes configurable to detect an error and engage in an error recovery via one of a processor of one of the plurality of storage nodes, a processor of the non-volatile solid state storage, or the flash memory, wherein the plurality of storage nodes locates and accesses a mirrored remote procedure call cache in one of the plurality of storage nodes, responsive to a failure of a differing one of the plurality of storage nodes having a remote procedure call cache as mirrored by the mirrored remote procedure call cache.