Efficient hierarchical storage management of a file system...

Details Efficient hierarchical storage management of a file system... Efficient hierarchical storage management of a file system...

2007-08-06

2011-11-08

Elmore, Reba I (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S101000

Reexamination Certificate

active

08055864

ABSTRACT:
A method is provided for managing the storage of a file that has been selected for migration from a first storage level within a file system to a second storage level. The method comprises copying each of one or more data blocks of the selected file that are stored in the first storage level at a physical disk address maintained in a corresponding reference of an inode for the selected file from the first storage level to the second storage level; maintaining a logical ditto address in each reference of an inode for each snapshot file in the file system that refers to one of the one or more data blocks of the selected file that were copied to the second storage level; and updating the file system to include a managed region for controlling access to the one or more data blocks through the inode for the selected file.

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Marcos K. Aguilera et al.; “Improving recoverability in multi-tier storage systems:” 37th Annual IEEE/FIP International Conference on Dependable Systems and Networks (DSN'07); 2007.

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