Identifying allocated blocks in a storage system
AssigneeEMC IP Holding Company LLC
InventorsAshok Tamilarasan, Philippe Armangau, Vamsi K. Vankamamidi, Samuel L. Mullis, II
Life of this patent
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Abstract
Techniques are used for identifying allocated blocks in a storage system. The techniques may be used to provide, among other things, retrieval of a value associated with a most recent reinitialization of the storage system. For a tier of user data storage in the storage system, a page of storage with the value and a marker indicating that the page marks an end of storage that has been allocated for the tier of user data storage may be identified. Storage may be allocated from a page immediately preceding the identified page.
Claims16
A method comprising:
- retrieving a value associated with a most recent reinitialization of the storage system;
- identifying, for a tier of user data storage in the storage system, a page of storage with the value and a marker indicating that the page marks an end of storage that has been allocated for the tier of user data storage;
- and
- allocating storage from a page immediately preceding the identified page.
A system comprising at least one processor configured to:
- retrieve a value associated with a most recent reinitialization of the storage system;
- identify, for a tier of user data storage in the storage system, a page of storage with the value and a marker indicating that the page marks an end of storage that has been allocated for the tier of user data storage;
- and
- allocate storage from a page immediately preceding the identified page.
Dependencies are inferred from the claim text.