A method of ssd key log inheritance
A log and key technology, applied in the direction of instruments, file system types, error detection/correction, etc., can solve problems such as difficult analysis and log loss
Active Publication Date: 2021-11-12
HUNAN GOKE MICROELECTRONICS
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Problems solved by technology
[0005] The purpose of the present invention is to solve the problem that when the log storage pool is recycled, the previously stored log will be erased to store a new log, which will cause the previous log to be lost; and the entire log area will be divided into A and B If there are two ping-pong log storage pools, when the logs in one area are full, the logs in the other area will be erased to store new logs, which will cause all the logs in one area to be lost, because many key process information Lost, it will lead to some problems that are difficult to analyze
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[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention.
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings without paying creative labor.
[0027] SSD(Solid State Disk): solid state drive;
[0028] NAND-Flash: Flash memory;
[0029] Block: block, the smallest erasing unit of NAND Flash;
[0030] Critical Log Block: critical log block;
[0031] Normal Log Block: normal log block;
[0032] R-Block (Raid-Block): A redundant array composed of blocks, with data redundancy...
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The present application relates to the technical field of SSD solid-state hard disk applications, and in particular to a method for inheriting key logs of SSDs. The existing log storage method will lead to the loss of logs, and the loss of many key process information, which makes it difficult to analyze some problems. The present application provides a method for SSD key log inheritance, the method comprising: defining the target log as a key log, marking it as a key log block in the next log block, marking all levels of log blocks as normal log blocks, and performing the next brush ; Classify the critical log blocks and normal log blocks, the critical log is high priority, and the normal log is all priority; when the log block records are full, all priority logs with the earliest storage time are preferentially recovered. Log reading will read all level logs and key logs separately. When parsing, first parse all level logs, and then parse key logs. Key logs fill in the missing entries of all level logs according to the timestamp position.
Description
technical field [0001] The present application relates to the technical field of SSD solid-state hard disk applications, and in particular to a method for inheriting key logs of SSDs. Background technique [0002] The log is mainly to record the process information during the operation of the SSD system, including normal and abnormal logs, which are used to assist in the analysis of the realization and execution of SSD functions, and more importantly, to help locate problems, etc., quickly locate the problematic modules and Scenarios to improve version iteration efficiency and version quality; due to SSD capacity requirements, NAND Flash only leaves a small part of space to store logs. This part of the area is recycled, and logs are recorded from the beginning to the end. It is used to store new logs to be downloaded next. Due to the capacity and performance requirements, it is impossible to continuously download a large number of logs. Therefore, the current method is to c...
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IPC IPC(8): G06F16/18G06F16/16G06F11/34
CPCG06F11/3476G06F16/16G06F16/1815G06F16/1847
Inventor 刘水涛王雯彭鹏姜黎
Owner HUNAN GOKE MICROELECTRONICS