Method, device, equipment and storage medium for reclaiming metadata space
A recovery method and metadata technology, applied in memory systems, electrical digital data processing, special data processing applications, etc., can solve the problems of unavailability of all-flash storage systems, leakage of metadata space, and reduction of access efficiency of metadata space, etc. To achieve the effect of reducing the leakage of corresponding metadata space and reducing the incidence rate
Active Publication Date: 2022-03-22
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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Problems solved by technology
At present, in the process of managing the metadata of the all-flash storage system, metadata space leakage is prone to occur, resulting in insufficient metadata space, which in turn reduces the access efficiency of the metadata space, and even causes the entire all-flash storage system unavailable
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[0052]The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0053] At present, in the process of managing the metadata of the all-flash storage system, it is easy to leak the metadata space, resulting in insufficient metadata space, thereby reducing the access efficiency of the metadata space, and even causing the entire all-flash storage System unavailable. For this reason, the present application provides a metadata space reclamation solution to solve the above technical problems.
[0054] see figure 1 As shown, the embodiment of the pres...
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The application discloses a metadata space recovery method, device, equipment and storage medium. The method includes: assigning a metadata space address for the metadata of the all-flash storage system, and organizing and managing the metadata through the data structure of the B+ tree ; When assigning a metadata space address for the all-flash storage system, if a faulty node is detected in the all-flash storage system, record the target data block currently used to allocate the metadata space address; when the faulty node is detected to have been restored, Then the target data block is scanned to determine the target metadata space address corresponding to the target data block; the target B+ tree corresponding to the target metadata space address is determined; the target B+ tree is queried to determine whether the target metadata space address is Effective address, if not, recycle the target metadata space address. The present application effectively reduces the leakage of the corresponding metadata space caused by the failure of the storage node, and improves the access efficiency of the metadata space.
Description
technical field [0001] The present application relates to the technical field of data storage, and in particular to a metadata space recovery method, device, equipment and storage medium. Background technique [0002] At present, with the rapid development of information technology, massive data is generated, how to effectively manage and organize these massive data has become a prominent problem. For a large amount of stored data, only by querying and analyzing the data content and meaning of the data can the data be used more effectively. The efficient organization and management of metadata (Metadata) in the storage system is an effective means to solve the above problems, and can support the system to manage and maintain data. It can be seen that effective management of metadata can make data more valuable. At present, in the process of managing the metadata of the all-flash storage system, it is easy to leak the metadata space, resulting in insufficient metadata space...
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IPC IPC(8): G06F12/02G06F16/13G06F16/16
CPCG06F12/0253G06F16/13G06F16/162
Inventor 刚亚州
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD