CN107465740A - A kind of LUN Mode Data means of communication and system - Google Patents

Abstract

This application discloses a kind of LUN Mode Data means of communication and system, including：Receive the target Mode Data for the target LUN that target host node is sent；Local target LUN history Mode Data are updated using target Mode Data and are preserved；Target Mode Data are sent into all nodes, so that each node updates target Mode Data.Cluster state machine receives the target Mode Data for the target LUN that target host node is sent in the application,And target Mode Data are sent into all nodes,So that each node updates target LUN target Mode Data,No longer by mutually forwarding target LUN target Mode Data between each node,But the unified Mode Data that the LUN after the change that each host node sends is received to cluster state machine and the Mode Data of the LUN after change are sent to each node,So that each node updates LUN Mode Data,Reduce data access between each node,Influence when reducing synchronous LUN Mode Data to I O access performance,Improve the efficiency of cluster,And reduce the influence to other I O process.

Description

Mode Data communication method and system for LUN

technical field

The invention relates to the field of cluster storage, in particular to a Mode Data communication method and system for LUNs.

Background technique

Now with the promotion of the national big data strategy, the amount of data carried by the storage system will increase. The performance requirements for reading and writing of LUNs are getting higher and higher, and the mode data of LUNs (Logical Unit Numbers) will be updated more and more frequently under the access of large amounts of data. Minimize its impact on IO access performance as much as possible when the Mode Data changes, which will cause a great drop in the performance of the entire storage system.

In the prior art, the nodes corresponding to each LUN communicate with each other to update the Mode Data of the LUN when the Mode Data of the LUN is updated. It will occupy a large amount of IO, affect the access performance of IO, and cause the performance of the entire storage system to degrade.

Contents of the invention

In view of this, the object of the present invention is to provide a mode data communication method and system of LUN, which reduces data access between nodes, reduces the impact on IO access performance when synchronizing mode data of LUN, and improves the efficiency of the cluster , and reduces the impact on other IO processing. The specific plan is as follows:

A mode data communication method of LUN, comprising:

Receive the target Mode Data of the target LUN sent by the target master node;

Utilize the target Mode Data to update the historical Mode Data of the local target LUN and save it;

Send the target Mode Data to all nodes, so that each node updates the target Mode Data.

Optionally, the process of receiving the target Mode Data of the target LUN sent by the target master node includes:

The Mode Data sent by the target IO group is received, wherein the IO group includes the target master node and a slave node corresponding to the target master node.

Optionally, the process of receiving the target Mode Data of the target LUN sent by the target master node includes:

The target Mode Data sent by the target master node is received in real time.

Optionally, the LUN uses the hard disk state data collection to manage Mode Data.

Optionally, the IO group adopts the Group management structure to manage the update of Mode Data.

The present invention also discloses a Mode Data communication system for LUN, including:

The receiving module is configured to receive the target Mode Data of the target LUN sent by the target master node;

An update module, configured to update and save the historical Mode Data of the local target LUN by using the target Mode Data;

A sending module, configured to send the target ModeData to all nodes, so that each node updates the target ModeData.

Optionally, the receiving module is specifically configured to receive the Mode Data sent by a target IO group, wherein the IO group includes the target master node and a slave node corresponding to the target master node.

Optionally, the module receives, including:

a real-time receiving unit, configured to receive the target Mode Data sent by the target master node in real time.

In the present invention, the Mode Data communication method of the LUN includes: receiving the target Mode Data of the target LUN sent by the target master node; using the target Mode Data to update and save the historical Mode Data of the local target LUN; sending the target ModeData to all nodes, To make each node update the target Mode Data. In the present invention, the cluster state machine receives the target Mode Data of the target LUN sent by the target master node, and sends the target ModeData to all nodes, so that each node updates the target Mode Data of the target LUN, and no longer forwards them to each other The target ModeData of the target LUN is unified to the cluster state machine to receive the changed Mode Data of the LUN sent by each master node and send the changed Mode Data of the LUN to each node, so that each node can update the Mode Data of the LUN, reducing It improves data access between nodes, reduces the impact on IO access performance when synchronizing LUN Mode Data, improves the efficiency of the cluster, and reduces the impact on other IO processing.

Description of drawings

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, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

FIG. 1 is a schematic flow chart of a Mode Data communication method for a LUN disclosed in an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a LUN Mode Data communication system disclosed by an embodiment of the present invention.

detailed description

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.

The embodiment of the present invention discloses a Mode Data communication method of a LUN, as shown in FIG. 1 , the method includes:

Step S11: Receive the target Mode Data of the target LUN sent by the target master node.

Specifically, in the cluster storage system, there are multiple LUNs forming a LUN set, each LUN corresponds to a corresponding node (Node), and the LUN set includes multiple LUN subsets, each LUN subset corresponds to a node subset, and the node Each node in the subset is connected to each LUN in the corresponding LUN subset, but only the master node in the node subset can send the Mode Data of the LUN. Therefore, when the Mode Data of any LUN in the LUN subset changes, the The master node corresponding to the LUN sends Mode Data.

It can be understood that the target Mode Data of the target LUN is the Mode Data after the initial Mode Data of the target LUN is changed, that is, when a certain operating state of the target LUN changes, the target master node will change the target Mode Data of the target LUN to Sent to the cluster state machine.

Among them, the Mode Data records some information about the running status and mode of the LUN, which is used to display the current running status of the LUN.

Step S12: Utilize the target Mode Data to update and save the historical Mode Data of the local target LUN.

Step S13: Send the target Mode Data to all nodes, so that each node updates the target Mode Data.

Specifically, after the cluster state machine (Cluster) saves the target Mode Data, it sends the target Mode Data to all nodes, including the target master node and the master nodes and slave nodes in each node subset, so that each node uses the cluster state machine to send Update the target Mode Data of the target LUN saved by each node.

It can be seen that in the embodiment of the present invention, the cluster state machine receives the target ModeData of the target LUN sent by the target master node, and sends the target ModeData to all nodes, so that each node updates the target ModeData of the target LUN, and no longer has to be performed by each node. Forward the target Mode Data of the target LUN between each other, but unify the cluster state machine to receive the changed Mode Data of the LUN sent by each master node and send the changed Mode Data of the LUN to each node, so that each node updates the LUN Mode Data reduces data access between nodes, reduces the impact on IO access performance when synchronizing LUN Mode Data, improves cluster efficiency, and reduces the impact on other IO processing.

In practical applications, node subsets exist in the form of IO groups. Therefore, the above process of receiving the target Mode Data of the target LUN sent by the target master node may be specifically receiving the target Mode Data of the target LUN sent by the target IO group, wherein, The IO group includes the target master node and the slave node corresponding to the target master node. Specifically, the target master node sends the target Mode Data of the target LUN to the IO group. The IO group manages its own state through the Group management structure. The IO group Then, the received target Mode Data of the target LUN is sent to the cluster state machine, thereby completing the process of the cluster state machine receiving the target Mode Data of the target LUN; at the same time, the cluster state machine sends the target Mode Data to the IO group, and the IO group is receiving After the target Mode Data is set, the target Mode Data is sent to each node in the IO group, so that each node updates the target Mode Data of the target LUN.

It can be understood that the cluster state machine can receive the target ModeData of the target LUN sent by the target master node in real time, and the master node can judge whether the Mode Data of the LUN has changed in real time. Once the Mode Data of the LUN changes, the cluster state machine can receive the target mode data sent by the target master node in real time Target Mode Data of the target LUN.

Correspondingly, the embodiment of the present invention also discloses a Mode Data communication system for LUN, as shown in FIG. 2 , the system includes:

The receiving module 11 is configured to receive the target Mode Data of the target LUN sent by the target master node;

Update module 12, for utilizing target Mode Data to update the history Mode Data of local target LUN and preserve;

The sending module 13 is configured to send the target Mode Data to all nodes, so that each node updates the target Mode Data.

It can be seen that in the embodiment of the present invention, the cluster state machine receives the target ModeData of the target LUN sent by the target master node, and sends the target ModeData to all nodes, so that each node updates the target ModeData of the target LUN, and no longer has to be performed by each node. Forward the target Mode Data of the target LUN between each other, but unify the cluster state machine to receive the changed Mode Data of the LUN sent by each master node and send the changed Mode Data of the LUN to each node, so that each node updates the LUN Mode Data reduces data access between nodes, reduces the impact on IO access performance when synchronizing LUN Mode Data, improves cluster efficiency, and reduces the impact on other IO processing.

In the embodiment of the present invention, the above-mentioned receiving module 11 is specifically configured to receive Mode Data sent by a target IO group, wherein the IO group includes a target master node and a slave node corresponding to the target master node.

Above-mentioned module receives 11, can comprise real-time receiving unit; Wherein

The real-time receiving unit is configured to receive the target Mode Data sent by the target master node in real time.

It should be noted that the LUN can use the hard disk status data collection to manage the Mode Data, and the IO group can use the Group management structure to manage the update of the Mode Data of the LUN.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above is a detailed introduction to the mode data communication method and system of LUN provided by the present invention. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for helping to understand the present invention The method of the invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the content of this specification should not be understood To limit the present invention.

Claims (8)

1. A mode data communication method of LUN, is characterized in that, comprises: Receive the target Mode Data of the target LUN sent by the target master node; Utilize the target Mode Data to update the historical Mode Data of the local target LUN and save it; The target Mode Data is sent to all nodes, so that each node updates the target Mode Data. 2. The Mode Data communication method of the LUN according to claim 1, wherein the process of receiving the target Mode Data of the target LUN sent by the target master node comprises: The Mode Data sent by the target IO group is received, wherein the IO group includes the target master node and a slave node corresponding to the target master node. 3. The Mode Data communication method of the LUN according to claim 1, wherein the process of receiving the target Mode Data of the target LUN sent by the target master node comprises: The target Mode Data sent by the target master node is received in real time. 4. The mode data communication method of LUN according to claim 1, wherein the mode data is managed by the LUN using hard disk state data collection. 5 . The Mode Data communication method for LUN according to claim 1 , wherein the IO group adopts a Group management structure to manage Mode Data update. 6 . 6. A Mode Data communication system of LUN, characterized in that, comprising: The receiving module is configured to receive the target Mode Data of the target LUN sent by the target master node; An update module, configured to update and save the historical Mode Data of the local target LUN by using the target Mode Data; A sending module, configured to send the target Mode Data to all nodes, so that each node updates the target Mode Data. 7. The Mode Data communication system of the LUN according to claim 1, wherein the receiving module is specifically configured to receive the Mode Data sent by the target IO group, wherein the IO group includes the target master node and a slave node corresponding to the target master node. 8. The Mode Data communication system of LUN according to claim 1, said module receiving, comprising: a real-time receiving unit, configured to receive the target Mode Data sent by the target master node in real time.