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Patent Searching and Data


Title:
DATA RECOVERY METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2017/041670
Kind Code:
A1
Abstract:
Provided are a data recovery method and apparatus, which fall within the field of computers. The method comprises: receiving fault notification information about a magnetic head, wherein the fault notification information about the magnetic head carries identification of a faulty magnetic head (201); based on the identification of the faulty magnetic head, determining a backup position of target metadata, wherein metadata of the faulty magnetic head is stored at the backup position of the target metadata, and each of the magnetic heads is provided with a metadata backup position in advance (202); acquiring metadata corresponding to the faulty magnetic head from the backup position of the target metadata, wherein the metadata is used to describe a data address and attribute information about data stored in a target disk sheet, and the target disk sheet is a disk sheet which is accessed by the faulty magnetic head (203); and based on the attribute information described by the acquired metadata, recovering the data stored in the target disk sheet (204).By means of metadata stored in a backup position of target metadata, data stored in a target disk sheet corresponding to a faulty magnetic head can be rapidly recovered, thereby reducing the cost of recovering data of an upper layer system, and improving the efficiency of data recovery.

Inventors:
LUO QINGCHAO (CN)
Application Number:
PCT/CN2016/097953
Publication Date:
March 16, 2017
Filing Date:
September 02, 2016
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G06F11/14
Foreign References:
CN105242985A2016-01-13
CN103218273A2013-07-24
CN102495777A2012-06-13
CN102193848A2011-09-21
US20120030510A12012-02-02
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