CN112114957A - Multi-control storage system IO path management method and device, electronic equipment and medium - Google Patents

Multi-control storage system IO path management method and device, electronic equipment and medium Download PDF

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Publication number
CN112114957A
CN112114957A CN202011181142.4A CN202011181142A CN112114957A CN 112114957 A CN112114957 A CN 112114957A CN 202011181142 A CN202011181142 A CN 202011181142A CN 112114957 A CN112114957 A CN 112114957A
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path
module
state information
node
fault
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赵书龙
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Suzhou Inspur Intelligent Technology Co Ltd
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Suzhou Inspur Intelligent Technology Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/48—Program initiating; Program switching, e.g. by interrupt
    • G06F9/4806—Task transfer initiation or dispatching
    • G06F9/4812—Task transfer initiation or dispatching by interrupt, e.g. masked
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
    • G06F13/24—Handling requests for interconnection or transfer for access to input/output bus using interrupt

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  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

The application discloses a method, a device, equipment and a medium for managing IO paths of a multi-control storage system, wherein the method comprises the following steps: receiving IO path state information uploaded by a lower layer IO module; the IO path state information comprises the state information of each node; judging whether a fault/offline node exists in a lower layer IO module according to the IO path state information; if no fault/offline node exists, the IO path state information of the current module is uploaded to an upper layer IO module; if the fault/offline node exists, the IO path is adjusted according to the information of the fault/offline node, and the IO path state information of the current IO module is uploaded to the upper IO module. According to the method and the device, state transmission can be carried out between modules of each layer through path state information, if any node of a lower-layer module breaks down, the state can be uploaded to an IO module of an upper layer, so that an IO path can be adjusted, and the exception handling capacity and reliability of the multi-controller storage system are improved.

Description

Multi-control storage system IO path management method and device, electronic equipment and medium
Technical Field
The present application relates to the field of storage server technologies, and in particular, to an IO path management method and apparatus for a multi-control storage system, an electronic device, and a computer-readable storage medium.
Background
IO processing in a multi-controller storage system can be processed at any node, the accessibility of an IO path on each node needs to be ensured in the storage system, particularly for a host user configured with a polling mode multi-path processing strategy, each module processing strategy on the path determines whether a path is accessible, and particularly under the condition that node failure occurs, the IO path state needs to be fed back to a host end at the first time. Therefore, how to solve the above problems is a great concern for those skilled in the art.
Disclosure of Invention
The application aims to provide a multi-controller storage system IO path management method and device, an electronic device and a computer readable storage medium, and the exception handling capacity and reliability of the multi-controller storage system are improved.
In order to achieve the above object, the present application provides a method for managing IO paths of a multi-control storage system, including:
receiving IO path state information uploaded by a lower layer IO module; the IO path state information comprises state information of each node in the multi-control storage system;
judging whether a fault/offline node exists in the lower layer IO module according to the IO path state information;
if no fault/offline node exists, directly uploading the IO path state information of the current IO module to an upper layer IO module;
and if the fault/offline node exists, adjusting the lower-layer IO path of the current IO module according to the information of the fault/offline node, and uploading the state information of the IO path of the current IO module to the upper-layer IO module after adjustment.
Optionally, the IO path status information includes a first type of status information used for indicating that the logical volume is created completely and online, a second type of status information used for indicating that the logical volume is not currently available, and a third type of status information used for indicating that the logical volume is offline.
Optionally, the IO path state information includes two 32-bit numerical values, and each bit in the numerical values is used to identify state information of each node.
Optionally, if there is a failed/offline node, adjusting the lower layer IO path of the current IO module according to the information of the failed/offline node, including:
if the fault/offline node exists, judging whether the fault/offline node is a main node in a lower-layer IO path of the current IO module;
and if so, executing the step of adjusting the lower layer IO path of the current IO module according to the information of the fault/offline node.
Optionally, the uploading the IO path state information of the current IO module itself to the upper IO module includes:
if IO fault information returned by a rear end node corresponding to a current IO module is acquired and the rear end node is judged to be in a non-offline state, adding the IO fault information into a waiting queue;
and when the fact that the rear-end node triggers an offline event is detected, the IO fault information is uploaded to an upper layer IO module.
Optionally, the adjusting the lower layer IO path of the current IO module according to the information of the failed/offline node includes:
and determining a corresponding opposite end node according to the fault/offline node information, and replacing the fault/offline node in the lower layer IO path of the current IO module with the opposite end node.
In order to achieve the above object, the present application provides an IO path management apparatus for a multi-control storage system, including:
the state receiving module is used for receiving IO path state information uploaded by the lower layer IO module; the IO path state information comprises state information of each node in the multi-control storage system;
the fault judgment module is used for judging whether a fault/offline node exists in the lower layer IO module according to the IO path state information;
the state uploading module is used for directly uploading the IO path state information of the current IO module to the upper IO module if no fault/offline node exists;
and the path adjusting module is used for adjusting the lower-layer IO path of the current IO module according to the information of the fault/offline node if the fault/offline node exists, and uploading the IO path state information of the current IO module to the upper-layer IO module after adjustment.
Optionally, the IO path status information includes a first type of status information used for indicating that the logical volume is created completely and online, a second type of status information used for indicating that the logical volume is not currently available, and a third type of status information used for indicating that the logical volume is offline.
To achieve the above object, the present application provides an electronic device including:
a memory for storing a computer program;
and the processor is used for realizing the steps of any one of the multi-control storage system IO path management methods disclosed in the foregoing when executing the computer program.
To achieve the above object, the present application provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the computer program implements the steps of any one of the IO path management methods of the multi-control storage system disclosed in the foregoing disclosure.
According to the scheme, the IO path management method of the multi-control storage system comprises the following steps: receiving IO path state information uploaded by a lower layer IO module; the IO path state information comprises state information of each node in the multi-control storage system; judging whether a fault/offline node exists in the lower layer IO module according to the IO path state information; if no fault/offline node exists, directly uploading the IO path state information of the current IO module to an upper layer IO module; and if the fault/offline node exists, adjusting the lower-layer IO path of the current IO module according to the information of the fault/offline node, and uploading the state information of the IO path of the current IO module to the upper-layer IO module after adjustment. According to the method, the state change of the IO path can be identified by the IO path state information including the state information of each node, the state can be transmitted between the modules through the state information, if any node of the lower-layer module fails, the IO path state information can be uploaded to the upper-layer IO module after being changed, so that the upper layer can correspondingly adjust the IO path, the exception handling capacity of the multi-controller storage system is improved, and the reliability of the system is improved.
The application also discloses an IO path management device of the multi-control storage system, an electronic device and a computer readable storage medium, and the technical effects can be realized.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of an IO path management method for a multi-control storage system according to an embodiment of the present application;
fig. 2 is a schematic diagram of an IO path management scheme of a specific multi-control storage system according to an embodiment of the present application;
fig. 3 is a structural diagram of an IO path management apparatus of a multi-control storage system according to an embodiment of the present application;
fig. 4 is a block diagram of an electronic device disclosed in an embodiment of the present application;
fig. 5 is a block diagram of another electronic device disclosed in the embodiments of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application discloses an IO path management method of a multi-controller storage system, which improves the exception handling capacity and reliability of the multi-controller storage system.
Referring to fig. 1, an IO path management method for a multi-control storage system disclosed in the embodiment of the present application includes:
s101: receiving IO path state information uploaded by a lower layer IO module; the IO path state information comprises state information of each node in the multi-control storage system;
in the embodiment of the application, the current IO module can receive IO path state information uploaded by the lower IO module, that is, state transmission can be performed between the hierarchical modules through the IO path state information. Specifically, the IO path status information may include, but is not limited to, a first type of status information for indicating that the logical volume is created completely and online, a second type of status information for indicating that the logical volume is not currently available, and a third type of status information for indicating that the logical volume is offline. The IO path status information may include two 32-bit values, where each bit of the value is used to identify the status information of each node.
As a specific embodiment, the IO path status information may specifically include, but is not limited to, OFFLINE, PENDING, and ONLINE. For a logical volume LUN newly created by a user, the initial state is the ofline state, and the initial state is the ONLINE state when the creation is completed, and the PENDING state is the state that the user LUN is added when processing cluster node events, which indicates that the node is in the state of exiting or joining the node, and the LUN state is unavailable.
It is understood that modules can use only OFFLINE/PENDING/ONLINE to identify LUN status, as long as there is one path. However, part of the modules distinguish master and slave nodes, and it needs to distinguish which node is used as the master node according to the path state information, for example, a reduced volume module, and the metadata operation is performed on the master node, so that switching is needed when the path state of the master node changes, that is, it needs to ensure that a path passes through the master node. Thus, to identify the state of each node, the IO Path State information may be identified using two 32-bits, where each bit value represents the state of each node, including the node's attributes. Specifically, the way of path state transition can be seen in table 1 below:
TABLE 1
Online_or_pending online STATE
1 0 0 OFFLINE
2 1 0 PENDING
3 1 1 ONLINE
4 0 1 illegal
For example, if the IO path state information is 0b00/0b00, it indicates that the links of the two nodes are not through; if the IO path state information is 0b11/0b11, the two node path states ONLINE are represented; if the IO path status information is 0b11/0b10, it indicates that node 1 is in PENDING state and the link is not through.
In a preferred embodiment, in order to simplify the judgment of the node state, an onlineNodes parameter in cluster management may be introduced, so that the PENDING state of a node may be accurately provided by using cluster node management, and further, the path state information determines whether the IO path of each node is normal through state machine operation.
S102: judging whether a fault/offline node exists in the lower layer IO module according to the IO path state information;
in this step, it may be determined whether a failed/offline node exists in the lower IO module according to the IO path state information, for example, if the IO path state information is 0b11/0b10, it indicates that the node 1 is in a PENDING state, and the link is not through, and it is determined that the node 1 is a failed/offline node.
S103: if no fault/offline node exists, directly uploading the IO path state information of the current IO module to an upper layer IO module;
it can be understood that, if it is determined that no fault/offline node exists in the lower IO module, the IO path is characterized as a path, and adjustment of the IO path is not needed, and at this time, the current IO module can upload the IO path state information of the current IO module to the upper IO module, so that the upper IO module performs the next determination until the uppermost IO module acquires the uploaded path state information of the lower IO module corresponding to the current IO module, and the entire host adjusts the IO path according to the node state in the current system.
S104: and if the fault/offline node exists, adjusting the lower-layer IO path of the current IO module according to the information of the fault/offline node, and uploading the state information of the IO path of the current IO module to the upper-layer IO module after adjustment.
If the failure/offline node exists in the lower layer IO module, the lower layer IO path of the current IO module can be adjusted according to the information of the failure/offline node to ensure that the IO path is accessible. After the IO path is adjusted, the current IO module may perform the step of uploading the IO path state information of the current IO module to the upper IO module.
It can be understood that, in the process of adjusting the lower layer IO path of the current IO module according to the information of the fault/offline node, it may be first determined whether the fault/offline node is a master node in the lower layer IO path of the current IO module; and if so, executing the step of adjusting the lower layer IO path of the current IO module according to the information of the fault/offline node. That is, if the failed/offline node is not the master node, that is, it is sufficient to ensure that there is only one path, the IO path may not need to be adjusted.
In a specific implementation, the process of adjusting the lower layer IO path of the current IO module according to the information of the failed/offline node may include: and determining a corresponding opposite end node according to the fault/offline node information, replacing the fault/offline node in the lower IO path of the current IO module with the opposite end node, and forwarding the IO to the opposite end node for disking.
Further, in order to ensure the IO processing timing sequence when the bottom layer is offline, the following procedures can be used to ensure that the correct host IO processing result is returned. Specifically, the method comprises the following steps: if IO fault information returned by a rear end node corresponding to the current IO module is acquired and the rear end node is judged to be in a non-offline state, adding the IO fault information into a waiting queue; and when the fact that the rear-end node triggers an offline event is detected, the IO fault information is uploaded to an upper layer IO module. Therefore, the module processing time sequence problem caused when the IO returns before the event can be avoided.
According to the scheme, the IO path management method of the multi-control storage system comprises the following steps: receiving IO path state information uploaded by a lower layer IO module; the IO path state information comprises state information of each node in the multi-control storage system; judging whether a fault/offline node exists in the lower layer IO module according to the IO path state information; if no fault/offline node exists, directly uploading the IO path state information of the current IO module to an upper layer IO module; and if the fault/offline node exists, adjusting the lower-layer IO path of the current IO module according to the information of the fault/offline node, and uploading the state information of the IO path of the current IO module to the upper-layer IO module after adjustment. According to the method, the state change of the IO path can be identified by the IO path state information including the state information of each node, the state can be transmitted between the modules through the state information, if any node of the lower-layer module fails, the IO path state information can be uploaded to the upper-layer IO module after being changed, so that the upper layer can correspondingly adjust the IO path, the exception handling capacity of the multi-controller storage system is improved, and the reliability of the system is improved.
The IO path management method of the multi-control storage system provided in the embodiment of the present application is introduced through a specific implementation scenario. Referring to fig. 2, specifically, the states of the modules are transferred by using the IO path state information defined in the foregoing embodiment, and the state of the lower layer may affect the IO processing path of the upper layer. For example, when there is a Node failure in the Component B module, which results in that the service cannot be processed, the path state pathState and onlineNodes parameters are transferred to the upper-layer Component C module, and the Component C can switch the path processed by the IO of the module according to the transferred state information, change the master Node, and transfer the IO to the Node 2 for processing.
It should be noted that, after the back-end disk goes OFFLINE, the offset state is transferred to the upper layer in an IO manner. Because the event processing adopts a serial processing mode and IO is often triggered in parallel, the speed is high, the OFFLINE IO is returned before the event, and the module processing time sequence problem is caused. Therefore, in this embodiment, a waitingOffline queue may be added, and when the returned IO is offline but the back-end disk is not offline, the IO is first added into the waiting queue. After the offline event is triggered, the IO is taken out from the waiting queue and returned to the host, so that the module processing time sequence is ensured.
In the embodiment of the application, three kinds of path state information can be designed according to module requirements, node state values are added, IO processing of the layer of modules at the node can be guaranteed, and stability of the system is improved. When the bottom layer is offline, a waiting queue can be added to ensure the IO processing time sequence, thereby ensuring that the correct host IO processing result is returned.
The following introduces an IO path management apparatus of a multi-control storage system provided in an embodiment of the present application, and an IO path management apparatus of a multi-control storage system described below and an IO path management method of a multi-control storage system described above may refer to each other.
Referring to fig. 3, an IO path management apparatus of a multi-control storage system according to an embodiment of the present application includes:
a state receiving module 201, configured to receive IO path state information uploaded by a lower layer IO module; the IO path state information comprises state information of each node in the multi-control storage system;
a failure determining module 202, configured to determine whether a failure/offline node exists in the lower IO module according to the IO path state information;
the state uploading module 203 is configured to, if there is no fault/offline node, directly upload the IO path state information of the current IO module to the upper IO module;
and the path adjusting module 204 is configured to, if there is a fault/offline node, adjust a lower-layer IO path of the current IO module according to information of the fault/offline node, and upload IO path state information of the current IO module to an upper-layer IO module after the adjustment.
For the specific implementation process of the modules 201 to 204, reference may be made to the corresponding content disclosed in the foregoing embodiments, and details are not repeated here.
On the basis of the foregoing embodiment, as a preferred implementation manner, the IO path state information includes a first type of state information used for indicating that creation of the logical volume is completed and online, a second type of state information used for indicating that the logical volume is not currently available, and a third type of state information used for indicating that the logical volume is offline.
The present application further provides an electronic device, and as shown in fig. 4, an electronic device provided in an embodiment of the present application includes:
a memory 100 for storing a computer program;
the processor 200, when executing the computer program, may implement the steps provided by the above embodiments.
Specifically, the memory 100 includes a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and computer-readable instructions, and the internal memory provides an environment for the operating system and the computer-readable instructions in the non-volatile storage medium to run. The processor 200 may be, in some embodiments, a Central Processing Unit (CPU), a controller, a microcontroller, a microprocessor, or other data Processing chips, and provides computing and control capabilities for an electronic device, and when executing a computer program stored in the memory 100, the IO path management method of the multi-control storage system disclosed in any of the foregoing embodiments may be implemented.
On the basis of the above embodiment, as a preferred implementation, referring to fig. 5, the electronic device further includes:
and an input interface 300 connected to the processor 200, for acquiring computer programs, parameters and instructions imported from the outside, and storing the computer programs, parameters and instructions into the memory 100 under the control of the processor 200. The input interface 300 may be connected to an input device for receiving parameters or instructions manually input by a user. The input device may be a touch layer covered on a display screen, or a button, a track ball or a touch pad arranged on a terminal shell, or a keyboard, a touch pad or a mouse, etc.
And a display unit 400 connected to the processor 200 for displaying data processed by the processor 200 and for displaying a visualized user interface. The display unit 400 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch panel, or the like.
And a network port 500 connected to the processor 200 for performing communication connection with each external terminal device. The communication technology adopted by the communication connection can be a wired communication technology or a wireless communication technology, such as a mobile high definition link (MHL) technology, a Universal Serial Bus (USB), a High Definition Multimedia Interface (HDMI), a wireless fidelity (WiFi), a bluetooth communication technology, a low power consumption bluetooth communication technology, an ieee802.11 s-based communication technology, and the like.
While FIG. 5 shows only an electronic device having the assembly 100 and 500, those skilled in the art will appreciate that the configuration shown in FIG. 5 does not constitute a limitation of the electronic device, and may include fewer or more components than shown, or some components may be combined, or a different arrangement of components.
The present application also provides a computer-readable storage medium, which may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk. The storage medium stores a computer program, and the computer program is executed by a processor to implement the IO path management method of the multi-control storage system disclosed in any one of the foregoing embodiments.
The state change of IO path can be identified by the IO path state information including the state information of each node, the state transmission can be carried out by the state information among the modules of each layer, if any node of the module of the lower layer breaks down, the IO path state information can be uploaded to the IO module of the upper layer after being changed, so that the IO path can be correspondingly adjusted by the upper layer, the abnormal handling capacity of the multi-controller storage system is improved, and the reliability of the system is improved.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims (10)

1. An IO path management method of a multi-control storage system is characterized by comprising the following steps:
receiving IO path state information uploaded by a lower layer IO module; the IO path state information comprises state information of each node in the multi-control storage system;
judging whether a fault/offline node exists in the lower layer IO module according to the IO path state information;
if no fault/offline node exists, directly uploading the IO path state information of the current IO module to an upper layer IO module;
and if the fault/offline node exists, adjusting the lower-layer IO path of the current IO module according to the information of the fault/offline node, and uploading the state information of the IO path of the current IO module to the upper-layer IO module after adjustment.
2. The IO path management method of a multi-control storage system according to claim 1, wherein the IO path state information includes a first type of state information used for indicating that creation of the logical volume is completed and online, a second type of state information used for indicating that the logical volume is not currently available, and a third type of state information used for indicating that the logical volume is offline.
3. The IO path management method of claim 1, wherein the IO path state information includes two 32-bit values, and each of the 32-bit values is used to identify state information of each node.
4. The IO path management method of a multi-control storage system according to claim 1, wherein if there is a failure/offline node, adjusting the lower IO path of the current IO module according to information of the failure/offline node includes:
if the fault/offline node exists, judging whether the fault/offline node is a main node in a lower-layer IO path of the current IO module;
and if so, executing the step of adjusting the lower layer IO path of the current IO module according to the information of the fault/offline node.
5. The IO path management method for the multi-control storage system according to any one of claims 1 to 4, wherein the uploading of the IO path state information of the current IO module to an upper IO module includes:
if IO fault information returned by a rear end node corresponding to a current IO module is acquired and the rear end node is judged to be in a non-offline state, adding the IO fault information into a waiting queue;
and when the fact that the rear-end node triggers an offline event is detected, the IO fault information is uploaded to an upper layer IO module.
6. The IO path management method for the multi-control storage system according to claim 5, wherein the adjusting the lower IO path of the current IO module according to the information of the failed/offline node includes:
and determining a corresponding opposite end node according to the fault/offline node information, and replacing the fault/offline node in the lower layer IO path of the current IO module with the opposite end node.
7. An IO path management apparatus for a multi-control storage system, comprising:
the state receiving module is used for receiving IO path state information uploaded by the lower layer IO module; the IO path state information comprises state information of each node in the multi-control storage system;
the fault judgment module is used for judging whether a fault/offline node exists in the lower layer IO module according to the IO path state information;
the state uploading module is used for directly uploading the IO path state information of the current IO module to the upper IO module if no fault/offline node exists;
and the path adjusting module is used for adjusting the lower-layer IO path of the current IO module according to the information of the fault/offline node if the fault/offline node exists, and uploading the IO path state information of the current IO module to the upper-layer IO module after adjustment.
8. The IO path management apparatus of claim 7, wherein the IO path status information includes a first type of status information indicating that creation of the logical volume is completed and online, a second type of status information indicating that the logical volume is not currently available, and a third type of status information indicating that the logical volume is offline.
9. An electronic device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the IO path management method of the multi-control storage system according to any one of claims 1 to 6 when executing the computer program.
10. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the IO path management method of the multi-control storage system according to any one of claims 1 to 6.
CN202011181142.4A 2020-10-29 2020-10-29 Multi-control storage system IO path management method and device, electronic equipment and medium Withdrawn CN112114957A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113448513A (en) * 2021-05-28 2021-09-28 山东英信计算机技术有限公司 Data reading and writing method and device of redundant storage system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113448513A (en) * 2021-05-28 2021-09-28 山东英信计算机技术有限公司 Data reading and writing method and device of redundant storage system

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Application publication date: 20201222