Method and apparatus for accelerating data writing speed during power down, and computer device
A technology of data writing and speed, applied in the direction of electrical digital data processing, input/output process of data processing, calculation, etc., can solve the problems of uncontrollable power-off point and data destruction, so as to improve the writing speed and reduce loss , the effect of reducing the impact
Active Publication Date: 2018-11-06
SHENZHEN YILIAN INFORMATION SYST CO LTD
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Problems solved by technology
When the power is off, the short-term power supply capacity of the capacitor supports the completion of the NAND Flash operation. However, because the power-off point is uncontrollable and there are many requests at the time of power-off, there are still unfinished write operations that lead to the destruction of safely written data. possibility
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[0061] In order to fully understand the technical content of the present invention, the technical solutions of the present invention will be further introduced and illustrated below in conjunction with specific examples, but not limited thereto.
[0062] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.
[0063] It should also be understood that the terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural referents unless th...
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The invention relates to a method and apparatus for accelerating a data writing speed during power down, and a computer device. The method comprises the following steps: reserving an erasing unit, andsetting the reserved erasing unit as an erasing state; judging whether the system has an abnormal power down state; if yes, processing the erasing state of NAND Flash; parsing a request type of a request queue, and performing request processing according to the request type; and obtaining data to be backed up and a request to be recycled, and storing the same in the reserved erasing unit. According to the method and apparatus provided by the invention, by reserving the erasing unit, and setting the reserved erasing unit as the erasing state, received data are written, in the case of abnormalpower down of the system, the data to be backed up and the request to be recycled are stored in the erasing unit to reduce the influence on the correct data that have been written, accelerate the datawriting speed, and reduce the loss of user data.
Description
technical field [0001] The present invention relates to an SSD solid state hard disk, and more specifically refers to a method, device and computer equipment for increasing data writing speed when power is off. Background technique [0002] In actual application scenarios, solid-state drives may experience abnormal power failures. When the power is off, there may be buffered data in the SSD system that has not been written into the NAND Flash; when the power is off, the NAND Flash side may be performing a write operation. Data near the entry point is corrupted. [0003] When the power is off, the erase operation in progress will be decided after arbitration whether to cancel or continue to execute; for the subsequent write operation, it may be necessary to perform garbage collection because there is no erase unit reserved, start the erase operation, and consume When the power is off, the existing technology will distinguish the request on the NFC side, and respond to the w...
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Login to View More IPC IPC(8): G06F3/06
CPCG06F3/0614G06F3/0652G06F3/0679
Inventor 李传业冯元元胡中中
Owner SHENZHEN YILIAN INFORMATION SYST CO LTD