Aggregation of write traffic to a data store

Details Aggregation of write traffic to a data store Aggregation of write traffic to a data store

2011-05-31

2011-05-31

Wong, Leslie (Department: 2164)

Data processing: database and file management or data structures

File management

File systems

C711S104000, C711S112000, C707S824000

Reexamination Certificate

active

07953774

ABSTRACT:
A method and a processing device are provided for sequentially aggregating data to a write log included in a volume of a random-access medium. When data of a received write request is determined to be suitable for sequentially aggregating to a write log, the data may be written to the write log and a remapping tree, for mapping originally intended destinations on the random-access medium to one or more corresponding entries in the write log, may be maintained and updated. At time periods, a checkpoint may be written to the write log. The checkpoint may include information describing entries of the write log. One or more of the checkpoints may be used to recover the write log, at least partially, after a dirty shutdown. Entries of the write log may be drained to respective originally intended destinations upon an occurrence of one of a number of conditions.

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