Metadata storage method and system
A technology for metadata and data, applied in the field of metadata storage methods and systems, can solve problems such as affecting the IO performance of solid-state drives, intolerant of solid-state drives, and consuming the life of solid-state drives.
Inactive Publication Date: 2017-11-10
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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Problems solved by technology
However, solid-state hard disks are not resistant to erasure and writing. Frequent erasure and writing operations will not only consume the life of solid-state hard disks, but also a large number of random write operations of small blocks will increase the frequency of garbage collection processing, and garbage collection has data relocation, which will affect solid-state hard disks. IO performance that can be provided externally
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[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0054] The embodiment of this application provides a metadata storage method, such as figure 1 As shown, applied to an all-flash array, the metadata storage method includes:
[0055] S101: Receive metadata to be modified;
[0056] S102: Generate a metadata block according to the storage parameters of the metadata to be modified;
[0057]S103: Write the metadata block into the non-volatile memory of the all-flash array, and determine whether the total length ...
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The invention discloses a metadata storage method and system. The metadata storage method comprises the following steps: in view of the property that a modification unit of metadata is generally small, generating a metadata block according to received storage parameters of the to-be-received metadata, and storing the metadata block in a nonvolatile memory; and then when the total length of the metadata blocks stored in the nonvolatile memory is greater than or equal to a preset length, reducing the influence of the random write operation of small blocks of data on the performance of the lower layer storage medium (a solid state disk) by merging the metadata blocks stored in the nonvolatile memory, thereby improving the performance of the solid state disk and prolonging the service life of the solid state disk.
Description
technical field [0001] The present application relates to the technical field of data storage, and more specifically, to a metadata storage method and system. Background technique [0002] With the development of solid state disk (Solid State Disk, SSD) technology, solid state disk has reached the level of enterprise-level use in terms of performance, life, reliability and capacity, so in recent years based on all-flash storage media (such as solid state disk ) research on all-flash arrays is in full swing. [0003] Compared with traditional mechanical disks, solid-state drives have the following advantages: 1. The performance of solid-state drives is much better than that of traditional disks. The IO delay of enterprise-level solid-state drives can reach below 50 μs, while the time delay of enterprise-level disks The delay is at the millisecond level; 2. Since the solid-state hard disk does not need a mechanical motor, it has low noise and low power consumption during oper...
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IPC IPC(8): G06F3/06
Inventor 朱斌张永峰仇锋利
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD