Bandwidth recovery method and device based on PCIE Switch and medium
A recovery method and bandwidth technology, which is applied in the field of storage systems and can solve the problem that multiple cables cannot form a specified link bandwidth.
Active Publication Date: 2020-10-23
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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[0005] The purpose of the embodiment of the present invention is to provide a PCIE Switch-based bandwidth recovery method, device and computer-readable storage medium, which can solve the problem that the specified link bandwidth cannot be formed by connecting multiple cables
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[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. 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.
[0046] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0047] Next, a PCIE Switch-based bandwidth restoration method provided by an embodiment of the present invention is described in detail. figure 1 A flow chart of a PCIE Switch-based bandwidth recover...
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The embodiment of the invention discloses a bandwidth recovery method and device based on PCIE Switch, and a medium. The method comprises the following steps: obtaining a cable connection state and alink bandwidth of a downlink port; when it is detected that the cable connection state of the downlink port and the link bandwidth meet the recovery condition, adjusting the connection flag bit in theconnection control register to the first state to trigger the system to remove the cable connected with the downlink port, so that the effect of removing the cable is achieved in a software simulation mode; and after removing a cable connected with a downlink port by a triggering system, adjusting the connection flag bit in the connection control register to the second state again, so that the system is triggered to rejoin the cables connected with the downlink port, and at the moment, the system can identify all the cables connected with the downlink port, the link bandwidth of the downlinkport is matched with the number of the cables actually connected with the downlink port, and the problem that a specified link bandwidth cannot be formed when a plurality of cables are connected is solved.
Description
technical field [0001] The present invention relates to the technical field of storage systems, in particular to a PCIE Switch-based bandwidth recovery method, device and computer-readable storage medium. Background technique [0002] In recent years, with the continuous improvement of users' requirements for integration, unification, efficiency, space, and energy consumption, there are many new scenarios for the use of PCIE Switch. One of the scenarios is: a bandwidth of PCIE Switch is x16 downlink port, which needs to pass through four MiniSAS cables are connected to form x16 bandwidth links, and the cables support hot swapping. [0003] During use, the cables are inserted one by one in sequence. After inserting the first cable, the PCIE link will automatically negotiate, and the link bandwidth after negotiation is x4. When the remaining three cables are inserted later, due to the PCIE specification, the PCIE link will not automatically negotiate, and the bandwidth will a...
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IPC IPC(8): H04L12/24H04L12/917H04L47/76
CPCH04L41/0896H04L47/76
Inventor 李长飞
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD