Controller switching method and device
A controller and main controller technology, which is applied to the generation of response errors, the error detection of redundant data in operation, and the error detection of redundant data in hardware, which can solve problems that cannot achieve real-time consistency. Data backup, low data reliability, etc.
Active Publication Date: 2015-12-16
INSPUR BEIJING ELECTRONICS INFORMATION IND
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[0006] The purpose of the present invention is to provide a controller switching method and device to solve the problem in the prior art that after the controller fails, real-time consistent data backup cannot be completed, resulting in low data reliability
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[0033] 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.
[0034] A controller switching method provided by an embodiment of the present invention is applied to a storage system. The storage system includes a master controller and a slave controller. A snapshot relationship is pre-created on the master controller and the slave controller. Activate the snapshot relationship on the server to implement the snapshot function. Such as figure 1 As shown, the method may include the following steps:
[0035] S11: When the p...
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The invention discloses a controller switching method and device, which is applied to a storage system. The storage system comprises a master controller and a slave controller, wherein snapshoot relations are established on the master controller and the slave controller in advance, and the snapshoot relation is activated on the master controller in advance to achieve a snapshoot function. The method comprises the following steps of disenabling the snapshoot relation on the master controller to stop achieving the snapshoot function when a fault occurs in the master controller; and enabling the snapshoot relation on the slave controller to achieve the snapshoot function. The storage system applying the controller switching method and system comprises two controllers, the two controllers are respectively the master controller and the slave controller, the automatic switching function of snapshoot is added between the two controllers, therefore, the snapshoot function is switched to the slave controller from the main controller when the fault occurs in the master controller, the comprehensive time-consuming requirement for controller switching is met, and real-time and consistent backup on data is ensured, and the data reliability is greatly improved.
Description
technical field [0001] The present invention relates to the technical field of storage disaster recovery, and more specifically, to a controller switching method and device. Background technique [0002] With the increasing demand of users for the amount of stored data, more stringent requirements are put forward for the reliability of the stored data. [0003] In the prior art, a snapshot technology is usually used to implement data disaster recovery. Among them, the snapshot technology refers to the establishment of a snapshot relationship between the two data ends of the storage system, that is, the source volume and the data volume; after the user executes the snapshot action, when an IO is issued, the source end first backs up the data corresponding to the IO to the Data volume, and then process the received IO. At the same time, the user can map the snapshot to become a snapshot volume, and the content of the snapshot volume is consistent with the content of the sour...
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IPC IPC(8): G06F11/14G06F11/20
Inventor 王倩
Owner INSPUR BEIJING ELECTRONICS INFORMATION IND