CN111045602B - Cluster system control method and cluster system - Google Patents
Cluster system control method and cluster system Download PDFInfo
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- CN111045602B CN111045602B CN201911167566.2A CN201911167566A CN111045602B CN 111045602 B CN111045602 B CN 111045602B CN 201911167566 A CN201911167566 A CN 201911167566A CN 111045602 B CN111045602 B CN 111045602B
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- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000007726 management method Methods 0.000 description 34
- 230000006870 function Effects 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000004590 computer program Methods 0.000 description 5
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0604—Improving or facilitating administration, e.g. storage management
- G06F3/0607—Improving or facilitating administration, e.g. storage management by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
- G06F11/2094—Redundant storage or storage space
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/067—Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
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Abstract
The invention provides a cluster system and a control method of the cluster system, wherein the cluster system comprises: the system comprises a host, a standby machine and a management server, wherein the host, the standby machine and the management server are in message communication through an Ethernet card, the host, the standby machine and the respective expanders of the management server are interconnected through an SAS port, all the expanders form a service distribution subsystem area through enabling a ZONE function, and the host, the standby machine and the management server access storage resources in the service distribution subsystem area through ZONE configuration. Therefore, the storage efficiency and the flexibility of the cluster system are greatly improved.
Description
Technical Field
The invention relates to the technical field of data storage, in particular to a cluster system control method and a cluster system.
Background
With the development of network storage technology, the requirements on storage capacity and storage performance are higher and higher, and the application of a cluster storage system with high reliability is becoming mainstream. A typical clustered storage system requires at least one working host, one standby, one management server, and a shared storage server. Among them, shared storage servers are typically SANs that use SAN storage area networks, including network ipsec ans and FC fibre channels. The servers and the hosts communicate with each other by using a network IP and data are transmitted. The data stored by the host and the standby are stored on the shared storage server through the network. When the host computer is abnormal, the management server detects that the standby machine replaces the work task on the host computer, the data is also stored on the shared storage server, and after the abnormal host computer is recovered, the original standby machine switches the current work task back to the abnormal recovery host computer, and the standby machine is recovered to a ready state.
However, in the cluster system, the working host needs to synchronize data to the mirror volume of the storage server, which increases performance pressure and wastes storage space, and greatly increases internal lan bandwidth pressure in a network manner. When the host is abnormal, the standby machine takes over the mirror image volume of the storage server in a network mounting mode, the storage data in the period of time changes, and the storage data is synchronously restored to the working host later, so that the efficiency is low.
In addition, in the cluster system, because the shared storage adopts a SAN mode, once the SAN fails, the cluster basically cannot work normally. Two common ways of SAN are IP ethernet and FC fiber, and the mass storage data transmission of the ipsec mode increases the bandwidth pressure of the internal local area network, and the cluster host also has the bandwidth requirement of the external network, which increases the overall network pressure of the host. The cost of building the SAN by the FC fiber channel mode is relatively high. The two modes are used for carrying out SCSI protocol conversion at the same time, so that the efficiency is affected.
Disclosure of Invention
The embodiment of the invention provides a cluster system and a cluster system control method, which are used for at least solving the problem of low storage efficiency caused by a shared storage mode of the cluster system in the related technology.
According to an embodiment of the present invention, there is provided a cluster system including: the system comprises a host, a standby machine and a management server, wherein the host, the standby machine and the management server are in message communication through an Ethernet card, the host, the standby machine and the respective expanders of the management server are interconnected through an SAS port, all the expanders form a service distribution subsystem area through enabling a ZONE function, and the host, the standby machine and the management server access storage resources in the service distribution subsystem area through ZONE configuration.
Optionally, the plurality of hosts is each connected to storage resources within the service distribution subsystem region through a SAS port.
Optionally, the standby machine is multiple, and each standby machine is connected to a storage resource in the service distribution subsystem area through an SAS port.
Optionally, the storage resources include all storage hard disks, and the storage hard disks are at least one of the following: SATA disk, SAS disk, SATA interface SSD storage hard disk.
Optionally, the storage capacity of the cluster system may be dynamically expanded by adding a storage hard disk to an expander of the standby machine.
According to another embodiment of the present invention, there is provided a control of a cluster system, which is applied to the cluster system in the foregoing embodiment, the method includes: after the management server monitors that the first working host fails, selecting a standby machine to replace the working of the first working host; synchronizing the task of the first working host to the standby machine, and dividing a storage hard disk of the first working host to the standby machine through ZONE configuration; and the standby machine accesses the storage hard disk through a SCSI protocol and switches the storage tasks so as to recover the processing and storage of the tasks in the cluster system.
Optionally, the method further comprises: after the management server monitors that the first working host is recovered, the current task of the standby machine is synchronized back to the first working host; the management server returns the storage hard disk to the first working host through configuring a ZONE function; and the first working host computer is restored to a normal working state, and the standby machine is restored to a ready state.
Optionally, the method further comprises: and the management server uniformly manages all storage resources in the service distribution subsystem area, and each host applies for the respective storage resources to the management server according to the storage requirement.
Optionally, the method further comprises: and adding a storage hard disk to an expander of the standby machine, and distributing the storage hard disk of the standby machine to the working host for use by the management server through ZONE configuration so as to realize dynamic capacity expansion of the storage capacity of the cluster system.
Optionally, the method further comprises: when the storage hard disk of the working host fails, dynamically borrowing the storage hard disk of the standby machine; and after the storage hard disk of the working host is restored, the working host releases the storage hard disk of the standby machine.
In the above embodiment of the present invention, the expanders of the host, the standby and the management server are interconnected through SAS ports and form a service distribution subsystem area, so that the host, the standby and the management server can access all storage resources in the service distribution subsystem area through ZONE configuration, thereby greatly providing storage efficiency and flexibility.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic diagram of a cluster system in accordance with an embodiment of the invention;
FIG. 2 is a flow chart of a control method of a cluster system according to an embodiment of the invention;
FIG. 3 is a flow chart of a control method of a cluster system in accordance with an alternative embodiment of the invention;
FIG. 4 is a schematic diagram of a cluster system in accordance with an embodiment of the invention;
fig. 5 is a cluster system workflow diagram in accordance with an alternative embodiment of the invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
In this embodiment, a cluster system is provided, fig. 1 is a schematic structural diagram according to an embodiment of the present invention, and as shown in fig. 1, the cluster system includes: host 10, standby 20, and management server 30. Message communication is performed among the host 10, the standby machine 20 and the management server 30 through an ethernet card. The respective expanders of the host 10, the standby 20 and the management server 30 are interconnected through SAS ports 40, all of the expanders 40 form a service distribution subsystem area by enabling zon functions, and the host 10, the standby 20 and the management server 30 access storage resources within the service distribution subsystem area through zon configuration.
In this embodiment, the plurality of hosts 10 may be plural, and each host may be connected to a respective storage hard disk 50 through an SAS port.
In this embodiment, the standby machine 20 may be plural, and each standby machine is connected to a respective storage hard disk 50 through an SAS port.
In this embodiment, the storage resource includes a storage hard disk 50, and the storage hard disk 50 is at least one of the following: SATA disk, SAS disk, SATA interface SSD storage hard disk.
In the embodiment of the invention, the network bandwidth pressure between each host and each server in the cluster is reduced, and the efficiency of the active-standby switching is improved. The efficiency and the stability of internal storage data transmission are improved, and all hosts directly pass through a SCSI protocol without additional protocol conversion or pass through a network. The security and the flexibility of the storage equipment are improved, the storage equipment is not dependent on SAN shared storage, the storage equipment is distributed on servers of all hosts, all the host storage equipment can share each other, meanwhile, the construction and storage cost is low, and the storage equipment has great advantages in all aspects.
The embodiment also provides a control of the cluster system, which is applied to the cluster system in the above embodiment, as shown in fig. 2, and the method includes the following steps:
step S201, after the management server monitors that the first working host fails, selecting a standby machine to replace the working of the first working host;
step S202, synchronizing the task of the first working host to the standby machine, and dividing a storage hard disk of the first working host to the standby machine through ZONE configuration;
and step S203, the standby machine accesses the storage hard disk through a SCSI protocol and switches the storage tasks so as to recover the processing and storage of the tasks in the cluster system.
After step S203 of the present embodiment, as shown in fig. 3, the following steps may be further included:
step S204, after the management server monitors that the first working host is recovered, the current task of the standby machine is synchronized back to the first working host;
step S205, the management server returns the storage hard disk to the first working host by configuring a ZONE function;
in step S206, the first working host is restored to the normal working state, and the standby machine is restored to the ready state.
In the embodiment of the invention, the switching continuity of the working host and the standby machine is high, the speed is high, and the redundant operations of synchronization, feedback and the like are not needed for storing data. The whole data storage flow is direct SCSI protocol communication, and no other extra conversion protocol overhead exists. And the stability and the overall performance of cluster storage are greatly improved without network transmission.
In order to facilitate understanding of the technical solution provided by the present invention, the following detailed description will be provided with reference to the embodiments of the specific application scenario.
The present embodiment provides a high availability cluster system with ZONE function, which includes a working host a, a working host B, a standby machine and a management server, as shown in fig. 4. And a communication message mechanism is realized among the hosts, the standby machine and the management server through the TCP/IP of the Ethernet card.
In this embodiment, expanders (expanders) of the working hosts, standby machines and management servers are interconnected using SAS wide ports, and expanders in all clusters form a service distribution subsystem ZONE (zoned portion of a service delivery subsystem, ZPSDS) by enabling ZONE functions, and each host, standby machine and management server can access any storage hard disk in the ZPSDS domain through ZONE configuration.
Working host: host computer responsible for processing tasks within cluster and for bearing workload
Standby machine: the device is used as a substitute device of a main machine in the cluster, and replaces the function of the main machine when the main machine fails until the main machine is recovered.
The management server: and the server for managing the cluster monitors the running state of each host and the standby machine and works as a task. And synchronizing the tasks, configuration and other information of the host and the standby.
In this embodiment, as shown in fig. 5, the following workflow may be adopted for the cluster system.
In step S501, under the normal working condition of the cluster, the management server configures the ZONE function, the working host a manages its own hard disk group a, the working host B manages its own hard disk group B, and the standby machine is in a ready state without storing the hard disk group. The management server monitors the working state and working task condition of each working host computer and the standby machine.
Step S502, monitoring that the working host A fails, if the expander of the working host A has an independent system or can work normally, the management server selects a proper standby machine to replace the working of the working host A, synchronizes the task of the working host A to the standby machine through a network, divides the hard disk group A of the working host A into the standby machine through ZONE configuration, and the standby machine can access the hard disk group A directly through a SCSI protocol, can quickly switch in the original storage task and quickly restore the processing and storage of the tasks in the cluster.
In step S503, the standby machine after switching can work for a long time, and the stored data directly accesses the hard disk of the standby machine through SCSI without other protocol conversion, thereby greatly improving stability and efficiency.
Step S504, after the host computer work A is recovered, the management server performs a recovery flow. And synchronizing the current task of the standby machine back to the working host A, configuring a ZONE function, and returning the hard disk group A to the working host A. The working host A is restored to the normal working state, and the standby machine is restored to the ready state. The whole switching process is quick, efficient and stable.
The above procedure is equally applicable to working host B, which may comprise a plurality of hosts, standby cluster systems.
It should be noted that, the technical solution provided in this embodiment further has other derivative scenarios: in the ZPSDS domain, the management server unifies all storage resources in the management domain, and each host can freely apply for hard disk resources to the management server according to storage needs, and the minimum granularity is a single disk, namely a phy port.
Derivative scenario 1: the expander on the standby adds a hard disk group, such as hard disk group C shown in fig. 4. The increased hard disk group can be used as a spare disk, and the management server can dynamically expand the storage capacity of the working host in the cluster by configuring the ZONE, so that the spare disk group is used for the working host, and the capacity is dynamically expanded. The working host computer stores the bad disk, can also borrow the hard disk group of the spare machine to use dynamically, wait the working host computer to store the bad disk and replace the new disk, the working host computer releases the hard disk group of the spare machine, guarantee the security of the storage business, stability.
Derivative scenario 2: in the cluster system, when all working hosts work abnormally, the standby machine can continue to work under the condition that only one standby machine is left normal, the standby machine can dynamically take over all storage resources and tasks in the cluster system, and the like, and after the standby machine is recovered, the respective storage resources are dynamically adjusted.
In the above embodiment of the present invention, the local area network inside the cluster has no data storage and transmission pressure, and the network only performs message communication between each server and the host, and has no stored data, thus greatly reducing the bandwidth load of each host network and improving the performance. The storage devices are distributed on each host server, the storage devices do not depend on a Storage Area Network (SAN) centralized storage mode, and meanwhile, the storage devices of all the hosts can be mutually shared, so that the security of cluster storage is greatly improved. And SAN shared storage is not needed, and the storage construction cost is low.
In addition, in the above embodiment, the switching continuity of the working host and the standby machine is high, the speed is high, the redundant operations such as synchronization and return are not needed for storing data, the whole data storage flow is direct SCSI protocol communication, no other extra conversion protocol overhead is generated, the network transmission is not needed, and the stability and the overall performance of cluster storage are greatly improved.
In the above embodiment, the storage mode adopted by the cluster system is very flexible, and can be suitable for various application scenarios.
An embodiment of the invention also provides a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the method embodiments described above when run.
Alternatively, in the present embodiment, the storage medium may include, but is not limited to: a usb disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing a computer program.
An embodiment of the invention also provides an electronic device comprising a memory having stored therein a computer program and a processor arranged to run the computer program to perform the steps of any of the method embodiments described above.
Optionally, the electronic apparatus may further include a transmission device and an input/output device, where the transmission device is connected to the processor, and the input/output device is connected to the processor.
It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may alternatively be implemented in program code executable by computing devices, so that they may be stored in a memory device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps within them may be fabricated into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A cluster system, comprising: the system comprises a host, a standby machine and a management server, wherein the host, the standby machine and the management server are in message communication through an Ethernet card, the respective expanders of the host, the standby machine and the management server are interconnected through an SAS port, all the expanders form a service distribution subsystem area through enabling a ZONE function, and the host, the standby machine and the management server access storage resources in the service distribution subsystem area through ZONE configuration;
the plurality of hosts are provided, and each host is connected to storage resources in the service distribution subsystem area through an SAS port;
the standby machines are multiple, and each standby machine is connected to storage resources in the service distribution subsystem area through an SAS port;
the management server is used for selecting one standby machine from a plurality of standby machines in the cluster system to replace the work of the first working host after the first working host is monitored to be faulty, wherein the first working host is any host in the cluster system.
2. The cluster system of claim 1, wherein the storage resource comprises a storage hard disk, the storage hard disk being at least one of: SATA disk, SAS disk, SATA interface SSD storage hard disk.
3. The cluster system of claim 1, wherein the storage capacity of the cluster system is dynamically expanded by adding a storage hard disk to an expander of the standby machine.
4. A control method of a cluster system, applied to the cluster system of any one of claims 1 to 3, comprising:
after the management server monitors that a first working host fails, selecting a standby machine to replace the working of the first working host, wherein the first working host is any host in the cluster system;
synchronizing the task of the first working host to the standby machine, and dividing a storage hard disk of the first working host to the standby machine through ZONE configuration;
the standby machine accesses the storage hard disk through a SCSI protocol, and switches the storage tasks so as to recover the processing and storage of the tasks in the cluster system;
the cluster system comprises a plurality of hosts, wherein each host is connected to storage resources in the service distribution subsystem area through an SAS port;
the cluster system further comprises a plurality of standby machines, wherein each standby machine is connected to storage resources in the service distribution subsystem area through an SAS port;
the host, the standby machine and the management server are respectively connected through SAS ports, all the expanders form a service distribution subsystem area through enabling a ZONE function, and the host, the standby machine and the management server access storage resources in the service distribution subsystem area through ZONE configuration.
5. The method as recited in claim 4, further comprising:
after the management server monitors that the first working host is recovered, the current task of the standby machine is synchronized back to the first working host;
the management server returns the storage hard disk to the first working host through configuring a ZONE function;
and the first working host computer is restored to a normal working state, and the standby machine is restored to a ready state.
6. The method as recited in claim 4, further comprising:
and the management server uniformly manages all storage resources in the service distribution subsystem area, and each host applies for the respective storage resources to the management server according to the storage requirement.
7. The method as recited in claim 6, further comprising:
and adding a storage hard disk to an expander of the standby machine, and distributing the storage hard disk of the standby machine to the working host for use by the management server through ZONE configuration so as to realize dynamic capacity expansion of the storage capacity of the cluster system.
8. The method as recited in claim 6, further comprising:
when the storage hard disk of the working host fails, dynamically borrowing the storage hard disk of the standby machine;
and after the storage hard disk of the working host is restored, the working host releases the storage hard disk of the standby machine.
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| CN111538613B (en) * | 2020-04-28 | 2023-06-13 | 浙江大华技术股份有限公司 | Cluster system exception recovery processing method and device |
| CN113190184B (en) * | 2021-05-31 | 2022-12-02 | 浙江大华技术股份有限公司 | Hardware cluster device and storage equipment management method |
| CN113190183B (en) * | 2021-05-31 | 2023-06-13 | 浙江大华技术股份有限公司 | Storage cluster device and equipment mounting method |
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