CN110620684A - Storage double-control split-brain-preventing method, system, terminal and storage medium - Google Patents
Storage double-control split-brain-preventing method, system, terminal and storage medium Download PDFInfo
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- CN110620684A CN110620684A CN201910819279.9A CN201910819279A CN110620684A CN 110620684 A CN110620684 A CN 110620684A CN 201910819279 A CN201910819279 A CN 201910819279A CN 110620684 A CN110620684 A CN 110620684A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0659—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities
- H04L41/0661—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities by reconfiguring faulty entities
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
Abstract
The invention provides a storage double-control brain-split prevention method, a system, a terminal and a storage medium, wherein the storage double-control brain-split prevention method comprises the following steps: confirming that an NTB channel between the double controllers is invalid, and calling the current node nonce resource to send a login request to an opposite-end node host; confirming that the login request has no response, and sending socket connection to a daemon process of the current node host machine; and positioning the fault node according to the host cluster state returned by the daemon process, and restarting the NAS virtual machine of the fault node. The invention can find NTB link failure in time, avoid split brain when the heart jumper wire is interrupted in the first time, enable nas business not to be influenced, and the method is simple, easy to realize, has guaranteed the stable operation of the storage system.
Description
Technical Field
The invention relates to the technical field of storage devices, in particular to a storage double-control brain-split prevention method, a storage double-control brain-split prevention system, a storage double-control brain-split prevention terminal and a storage medium.
Background
A Network Attached Storage (NAS) is a device connected to a Network and having a data Storage function, and the NAS separates a Storage device from a server completely by taking data as a center, and manages the data in a centralized manner, so as to achieve the purposes of releasing bandwidth and improving performance. Clustered NAS is a NAS service that coordinates multiple HOST nodes (HOST nodes) to provide high performance, high availability, or high load balancing.
The NAS cluster system is a horizontal expansion storage architecture, has the advantages of linear expansion of capacity and performance, and uses an NTB channel between storage double controllers (controllers) as an NAS heartbeat information exchange physical link along with continuous updating and upgrading of storage products. The NTB channel between the storage double controller (controller) firstly generates a virtual network card drive, and when the storage system is started, the virtual network card needs to be created immediately, so that the virtual network can be ensured to be used smoothly. And the Agent module of the storage system is used for managing the link between the NAS virtual machine and the hardware NTB chip, and the channel is a transparent channel for transmitting the NAS heartbeat information. And the Agent module and the NAS virtual network card receive and transmit data.
However, when the material link is used for heartbeat information exchange, the connection cannot be performed easily after a fault occurs, information interaction cannot be performed, two nas nodes are split, services cannot be provided, and therefore nas services are interrupted.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, the present invention provides a method, a system, a terminal and a storage medium for dual-control anti-split of a memory, so as to solve the above-mentioned technical problems.
In a first aspect, the invention provides a method for storing double-control brain crack prevention, which comprises the following steps:
confirming that an NTB channel between the double controllers is invalid, and calling the current node nonce resource to send a login request to an opposite-end node host;
confirming that the login request has no response, and sending socket connection to a daemon process of the current node host machine;
and positioning the fault node according to the host cluster state returned by the daemon process, and restarting the NAS virtual machine of the fault node.
Further, the confirming the NTB channel failure between the dual controllers includes:
and acquiring information of the unavailability of the NAS heartbeat signals returned by the double-control component, periodically exchanging the NAS heartbeat signals between the double-control nodes, and monitoring the NAS heartbeat signal exchange result in real time by the double-control component.
Further, the locating the fault node according to the host cluster state returned by the daemon process and restarting the NAS virtual machine of the fault node includes:
acquiring a first node host machine state and a second node host machine state returned by a daemon process, wherein the first node and the second node are nodes at two ends of double control;
determining a node with a host machine state of non-ACTIVE as a fault node;
restarting the NAS virtual machine of the failed node.
In a second aspect, the present invention provides a storage dual control anti-split brain system, comprising:
the failure confirmation unit is configured for confirming that an NTB channel between the double controllers fails and calling the current node lancet resource to send a login request to the host machine of the opposite end node;
the connection sending unit is configured to confirm that the login request has no response and send a socket connection to a daemon process of the current node host;
and the fault restarting unit is configured to locate the fault node according to the host machine cluster state returned by the daemon process and restart the NAS virtual machine of the fault node.
Further, the failure confirmation unit includes:
and the heartbeat judging module is configured to acquire information that the NAS heartbeat signal returned by the double-control component is not communicated, the NAS heartbeat signal is periodically exchanged between the double-control nodes, and the double-control component monitors the NAS heartbeat signal exchange result in real time.
Further, the fail restart unit includes:
the state acquisition module is configured to acquire a first node host state and a second node host state returned by the daemon process, wherein the first node and the second node are nodes at two ends of double control;
the fault positioning module is configured to determine a node with a non-ACTIVE host state as a fault node;
and the restarting execution module is configured to restart the NAS virtual machine of the failed node.
In a third aspect, a terminal is provided, including:
a processor, a memory, wherein,
the memory is used for storing a computer program which,
the processor is used for calling and running the computer program from the memory so as to make the terminal execute the method of the terminal.
In a fourth aspect, a computer storage medium is provided having stored therein instructions that, when executed on a computer, cause the computer to perform the method of the above aspects.
The beneficial effect of the invention is that,
according to the storage double-control brain crack prevention method, the system, the terminal and the storage medium, the fence resource (the fence _ virsh script) is connected through the socket and then sends a signal to the daemon process vm _ daemon, the vm _ daemon judges whether the virtual machine is restarted or not according to the host machine, and then one node is reserved for providing services, so that brain cracks are avoided. The invention can find NTB link failure in time, avoid split brain when the heart jumper wire is interrupted in the first time, enable nas business not to be influenced, and the method is simple, easy to realize, has guaranteed the stable operation of the storage system.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic flow diagram of a method of one embodiment of the invention.
FIG. 2 is a schematic block diagram of a system of one embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all 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 invention.
FIG. 1 is a schematic flow diagram of a method of one embodiment of the invention. Wherein, the execution subject in fig. 1 can be a storage dual-control brain-split prevention system.
As shown in fig. 1, the method 100 includes:
step 110, confirming that an NTB channel between the double controllers is invalid, calling the current node nonce resource to send a login request to an opposite end node host;
step 120, confirming that the login request has no response, and sending a socket connection to a daemon process of the current node host machine;
and step 130, positioning the fault node according to the host cluster state returned by the daemon process, and restarting the NAS virtual machine of the fault node.
Optionally, as an embodiment of the present invention, the determining that the NTB channel between the dual controllers fails includes:
and acquiring information of the unavailability of the NAS heartbeat signals returned by the double-control component, periodically exchanging the NAS heartbeat signals between the double-control nodes, and monitoring the NAS heartbeat signal exchange result in real time by the double-control component.
Optionally, as an embodiment of the present invention, the locating a failed node according to a host cluster state returned by a daemon process, and restarting the NAS virtual machine of the failed node includes:
acquiring a first node host machine state and a second node host machine state returned by a daemon process, wherein the first node and the second node are nodes at two ends of double control;
determining a node with a host machine state of non-ACTIVE as a fault node;
restarting the NAS virtual machine of the failed node.
In order to facilitate understanding of the present invention, the principle of the method for storing double-control brain-crack prevention according to the present invention is used in conjunction with the process of monitoring and managing the double-control nodes in the embodiment to further describe the method for storing double-control brain-crack prevention according to the present invention.
Specifically, the storage double-control brain-split prevention method comprises the following steps:
s1, confirming the NTB channel between the double controllers is invalid, calling the current node nonce resource to send a login request to the opposite terminal node host.
The double-control component corosyn monitors the NAS heartbeat information interaction condition of the NTB channel, and once the NAS heartbeat is obstructed due to the fault of the NTB channel, the double-control component corosyn sends NAS heartbeat abnormality prompt information. And receiving NAS heartbeat abnormity prompt information to confirm that the NTB channel is invalid. And calling an lancet resource (a lancet _ virsh script) running on the current node through the pacemaker, and if the action of the incoming lancet _ virsh script is "reboot", attempting to log in a host of the opposite node.
And S2, confirming that the login request has no response, and sending socket connection to the daemon process of the current node host machine.
In step S1, the attempt to log in the host of the peer node fails, i.e., is prompted by a failure returned by the peer node host. The fesce _ virsh script sends a socket connection to a daemon vm _ daemon on a host machine of the local end node, and the daemon vm _ daemon determines whether the software is required to be restarted or not after the software is connected.
And S3, positioning the fault node according to the host cluster state returned by the daemon process, and restarting the NAS virtual machine of the fault node.
And respectively acquiring the host machine states of the two nodes under double control by the daemon vm _ daemon. Host states are divided into the following three cases:
if the two host nodes are ACTIVE and the current node is a configuration node of the host, the current NAS node should be left in the cluster (nothing is done and the direct return is made);
if the host machine of the current node is not ACTIVE, restarting the NAS virtual machine of the current node;
if the host of the current node is ACTIVE and the host of the opposite node is not ACTIVE, the current NAS node should be left in the cluster (nothing is done, and direct return is made).
Therefore, after receiving the host machine state of the daemon vm _ daemon double-controlling two nodes, searching the node of which the host machine is not the ACTIVE node and positioning the node as a fault node. And restarting the NAS virtual machine of the fault node. That is, the NAS virtual machine that must have one node in the two nodes in the dual-control is restarted. After the virtual machine is restarted, because the heartbeat is obstructed, the result of the cluster arbitration mechanism can not be obtained, and the virtual machine can not be added into the NAS cluster, only one node (normal node) is left in the cluster to provide services, and therefore the condition that the two nodes can not provide the services finally because the heartbeat line is obstructed is avoided.
As shown in fig. 2, the system 200 includes:
a failure confirmation unit 210 configured to confirm that an NTB channel between the dual controllers is failed, and call a current node nonce resource to send a login request to the peer node host;
a connection sending unit 220 configured to confirm that the login request has no response, and send a socket connection to a daemon process of the current node host;
and the failure restarting unit 230 is configured to locate the failure node according to the host cluster state returned by the daemon process, and restart the NAS virtual machine of the failure node.
Optionally, as an embodiment of the present invention, the failure confirmation unit includes:
and the heartbeat judging module is configured to acquire information that the NAS heartbeat signal returned by the double-control component is not communicated, the NAS heartbeat signal is periodically exchanged between the double-control nodes, and the double-control component monitors the NAS heartbeat signal exchange result in real time.
Optionally, as an embodiment of the present invention, the fault restarting unit includes:
the state acquisition module is configured to acquire a first node host state and a second node host state returned by the daemon process, wherein the first node and the second node are nodes at two ends of double control;
the fault positioning module is configured to determine a node with a non-ACTIVE host state as a fault node;
and the restarting execution module is configured to restart the NAS virtual machine of the failed node.
Fig. 3 is a schematic structural diagram of a terminal system 300 according to an embodiment of the present invention, where the terminal system 300 may be used to execute the method for dual-control and split-brain prevention storage according to the embodiment of the present invention.
The terminal system 300 may include: a processor 310, a memory 320, and a communication unit 330. The components communicate via one or more buses, and those skilled in the art will appreciate that the architecture of the servers shown in the figures is not intended to be limiting, and may be a bus architecture, a star architecture, a combination of more or less components than those shown, or a different arrangement of components.
The memory 320 may be used for storing instructions executed by the processor 310, and the memory 320 may be implemented by any type of volatile or non-volatile storage terminal or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The executable instructions in memory 320, when executed by processor 310, enable terminal 300 to perform some or all of the steps in the method embodiments described below.
The processor 310 is a control center of the storage terminal, connects various parts of the entire electronic terminal using various interfaces and lines, and performs various functions of the electronic terminal and/or processes data by operating or executing software programs and/or modules stored in the memory 320 and calling data stored in the memory. The processor may be composed of an Integrated Circuit (IC), for example, a single packaged IC, or a plurality of packaged ICs connected with the same or different functions. For example, the processor 310 may include only a Central Processing Unit (CPU). In the embodiment of the present invention, the CPU may be a single operation core, or may include multiple operation cores.
A communication unit 330, configured to establish a communication channel so that the storage terminal can communicate with other terminals. And receiving user data sent by other terminals or sending the user data to other terminals.
The present invention also provides a computer storage medium, wherein the computer storage medium may store a program, and the program may include some or all of the steps in the embodiments provided by the present invention when executed. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a Random Access Memory (RAM).
Therefore, the method utilizes the lancet resource (the lancet _ virsh script) to send a signal to the daemon vm _ daemon after the lancet resource is connected through the socket, and the vm _ daemon judges whether to restart the virtual machine according to the host machine, so that one node is reserved for providing services, and the split brain is avoided. The method can find the NTB link fault in time, avoids the split brain when the heartbeat line is interrupted in the first time, enables the nas service not to be influenced, is simple and easy to realize, and ensures the stable operation of the storage system.
Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented as software plus a required general purpose hardware platform. Based on such understanding, the technical solutions in the embodiments of the present invention may be embodied in the form of a software product, where the computer software product is stored in a storage medium, 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, and the like, and the storage medium can store program codes, and includes instructions for enabling a computer terminal (which may be a personal computer, a server, or a second terminal, a network terminal, and the like) to perform all or part of the steps of the method in the embodiments of the present invention.
The same and similar parts in the various embodiments in this specification may be referred to each other. Especially, for the terminal embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant points can be referred to the description in the method embodiment.
In the embodiments provided by the present invention, it should be understood that the disclosed system, system and method can be implemented in other ways. For example, the above-described system embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, systems or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A method for storing double-control brain split prevention is characterized by comprising the following steps:
confirming that an NTB channel between the double controllers is invalid, and calling the current node nonce resource to send a login request to an opposite-end node host;
confirming that the login request has no response, and sending socket connection to a daemon process of the current node host machine;
and positioning the fault node according to the host cluster state returned by the daemon process, and restarting the NAS virtual machine of the fault node.
2. The method of claim 1, wherein the confirming the NTB channel failure between the dual controllers comprises:
and acquiring information of the unavailability of the NAS heartbeat signals returned by the double-control component, periodically exchanging the NAS heartbeat signals between the double-control nodes, and monitoring the NAS heartbeat signal exchange result in real time by the double-control component.
3. The storage dual-control brain-split prevention method according to claim 1, wherein the locating of the failed node according to the host cluster state returned by the daemon process and the restarting of the NAS virtual machine of the failed node comprise:
acquiring a first node host machine state and a second node host machine state returned by a daemon process, wherein the first node and the second node are nodes at two ends of double control;
determining a node with a host machine state of non-ACTIVE as a fault node;
restarting the NAS virtual machine of the failed node.
4. A storage dual control split brain prevention system, comprising:
the failure confirmation unit is configured for confirming that an NTB channel between the double controllers fails and calling the current node lancet resource to send a login request to the host machine of the opposite end node;
the connection sending unit is configured to confirm that the login request has no response and send a socket connection to a daemon process of the current node host;
and the fault restarting unit is configured to locate the fault node according to the host machine cluster state returned by the daemon process and restart the NAS virtual machine of the fault node.
5. The storage dual-control split brain prevention system according to claim 4, wherein the failure confirmation unit comprises:
and the heartbeat judging module is configured to acquire information that the NAS heartbeat signal returned by the double-control component is not communicated, the NAS heartbeat signal is periodically exchanged between the double-control nodes, and the double-control component monitors the NAS heartbeat signal exchange result in real time.
6. The system of claim 4, wherein the fail-safe unit comprises:
the state acquisition module is configured to acquire a first node host state and a second node host state returned by the daemon process, wherein the first node and the second node are nodes at two ends of double control;
the fault positioning module is configured to determine a node with a non-ACTIVE host state as a fault node;
and the restarting execution module is configured to restart the NAS virtual machine of the failed node.
7. A terminal, comprising:
a processor;
a memory for storing instructions for execution by the processor;
wherein the processor is configured to perform the method of any one of claims 1-3.
8. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910819279.9A CN110620684A (en) | 2019-08-31 | 2019-08-31 | Storage double-control split-brain-preventing method, system, terminal and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910819279.9A CN110620684A (en) | 2019-08-31 | 2019-08-31 | Storage double-control split-brain-preventing method, system, terminal and storage medium |
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| CN110620684A true CN110620684A (en) | 2019-12-27 |
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| CN201910819279.9A Withdrawn CN110620684A (en) | 2019-08-31 | 2019-08-31 | Storage double-control split-brain-preventing method, system, terminal and storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113377702A (en) * | 2021-07-06 | 2021-09-10 | 安超云软件有限公司 | Method and device for starting two-node cluster, electronic equipment and storage medium |
| CN116483517A (en) * | 2023-04-27 | 2023-07-25 | 安芯网盾(北京)科技有限公司 | Virtual machine control method, device and system |
-
2019
- 2019-08-31 CN CN201910819279.9A patent/CN110620684A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113377702A (en) * | 2021-07-06 | 2021-09-10 | 安超云软件有限公司 | Method and device for starting two-node cluster, electronic equipment and storage medium |
| CN113377702B (en) * | 2021-07-06 | 2024-03-22 | 安超云软件有限公司 | Method and device for starting two-node cluster, electronic equipment and storage medium |
| CN116483517A (en) * | 2023-04-27 | 2023-07-25 | 安芯网盾(北京)科技有限公司 | Virtual machine control method, device and system |
| CN116483517B (en) * | 2023-04-27 | 2024-01-26 | 安芯网盾(北京)科技有限公司 | Virtual machine control method, device and system |
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Application publication date: 20191227 |