JP2016184188A - Management device, management method and program for the same, and information processing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce access to a shared disk device from a virtual machine server at the start-up or during transport of a virtual machine.SOLUTION: A management device comprises a management part that, before execution of an operation to a virtual machine in a virtual machine server, moves data to be used by the virtual machine for the execution of the operation, from a shared disk device storing the data to be used to a disk cache part in another virtual machine server that is an object of the operation by the virtual machine.SELECTED DRAWING: Figure 1

Description

  The present invention relates to activation or movement of a virtual machine in a virtual machine server connected to a shared disk device.

  In the virtual machine environment, the number of virtual machines configured in one virtual machine server is increasing due to the improvement in performance of CPU (Central Processing Unit) or memory constituting the computer. The performance improvement of the disk device is not sufficient for the performance improvement of the CPU or memory.

  In Patent Document 1, in order to improve the hit rate of the disk cache, when it is determined that there is a high possibility that data read from the disk cache data is input / output again, the resident degree of the data in the disk cache memory is disclosed. It is described to increase.

Japanese Patent Laid-Open No. 10-161932

  When multiple virtual machine servers use a shared disk device, when a large number of virtual machines are started up on the virtual machine server, access requests from the virtual machine server to the shared disk device are concentrated and communication congestion causes a virtual machine or virtual Machine server performance is degraded.

  For example, when the virtual machine is activated or moved, a virtual machine malfunction due to a delay in disk access to the shared disk device occurs. For this reason, it is necessary to reduce access to the shared disk device when the virtual machine is started or moved.

  Further, Patent Document 1 does not relate to activation and movement of a virtual machine of a virtual machine server connected to a shared disk device.

  Thus, a technique for reducing access from a virtual machine server to a shared disk device when a virtual machine is activated or moved is desired.

  The virtual machine management device according to one aspect of the present invention includes a virtual machine from a shared disk device that stores usage data used for execution by the virtual machine before the virtual machine server performs an operation on the virtual machine. A management unit that moves the usage data to a disk cache unit of another virtual machine server that is the operation target of

  The control method according to an aspect of the present invention includes a virtual machine operation from a shared disk device that stores usage data used for execution by the virtual machine before the virtual machine server performs an operation on the virtual machine. The usage data is transferred to a disk cache unit of another virtual machine server as a target destination, and after the usage data is transferred, the operation of the virtual machine is executed on the other virtual machine server.

  The program according to one aspect of the present invention is an operation target of the virtual machine from a shared disk device that stores usage data used by the virtual machine for execution by the operation before execution of the operation to the virtual machine of the virtual machine server. The computer is caused to move the usage data to the disk cache unit of the other virtual machine server that is the destination, and after the usage data is transferred, the virtual machine operation is executed on the other virtual machine server.

  The virtual machine management system according to one aspect of the present invention includes a virtual machine server on which a virtual machine is activated or moved, a shared disk device that stores usage data used when the virtual machine is activated or moved, and the virtual machine server A management device that manages the virtual machine, wherein the management device stores usage data used by the virtual machine for execution by the operation before the virtual machine server performs the operation on the virtual machine. A management unit that transfers the usage data from the disk device to a disk cache unit of another virtual machine server that is the operation target of the virtual machine;

  The present invention can reduce access from a virtual machine server to a shared disk device when a virtual machine is activated or moved.

It is a block diagram which shows the structure of the management apparatus in the 1st Embodiment of this invention, and an information processing system using the same. It is a flowchart which shows operation | movement of the management apparatus in the 1st Embodiment of this invention. It is a block diagram which shows the structure of the information processing system which is the 2nd Embodiment of this invention. It is a block diagram which shows the structure of the virtual machine server of 2nd Embodiment. It is a block diagram which shows the structure of the shared disk apparatus of 2nd Embodiment. It is a flowchart regarding creation of a virtual machine cache definition in the second embodiment. It is a flowchart regarding creation of a virtual machine cache definition in the second embodiment. It is a flowchart which shows operation | movement of the virtual system management apparatus in 2nd Embodiment. It is a block diagram which shows the hardware constitutions which implement | achieved the management apparatus in 1st, 2nd embodiment of this invention, a virtual machine server, or a shared disk apparatus with the computer apparatus.

  A management apparatus according to a first embodiment of the present invention and an information processing system using the management apparatus will be described with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration of an information processing system using the management apparatus according to the first embodiment. As shown in FIG. 1, the information processing system 1 includes virtual machine servers 2 and 3, a shared disk device 4, and a management device 5.

  The virtual machine servers 2 and 3 include a control unit 7 and a disk cache unit 8. Note that the disk cache unit of the virtual machine server 10 in FIG. 1 is omitted. The control unit 7 of the virtual machine servers 2 and 3 has functions of acquiring the state of the virtual machine or the virtual machine servers 2 and 3, controlling the virtual machine 6, and moving the virtual machine between the virtual machine servers via the network. Have.

The control unit 7 of the virtual machine servers 2 and 3 is connected to the shared disk device 30 and accesses the shared disk device 30 in response to a disk access request from each virtual machine.
Further, the control unit 7 adds and deletes information held by the disk cache unit 8 and monitors the status of the disk cache unit 8 and the disk access request of each virtual machine according to an instruction from the management unit 9 of the management apparatus 5. Has the function to perform.

  The shared disk device 4 is connected to the virtual machine servers 2 and 3. The shared disk device 4 has a function of responding to disk access requests from the virtual machine servers 2 and 3.

  The management device 5 has a management unit 9. The management unit 9 has a function of transferring usage data from the shared disk device 4 that stores usage data used by the virtual machine for execution by the operation to the disk cache unit 8 of another virtual machine server 3 that is the operation target of the virtual machine. Have The usage data is moved before the operation of the virtual machine server 2 to the virtual machine is executed.

The management unit 9 also monitors the status of the virtual machines on the virtual machine servers 2 and 3, acquires the disk access status of each virtual machine at each status, analyzes the access frequency, etc., and creates a virtual machine cache definition can do.
Further, when the management unit 9 operates a virtual machine, the disk cache unit is changed via the control unit 7 of the virtual machine servers 2 and 3 to be operated based on the virtual machine cache definition at the time of performing the operation. You can also.

  Next, the operation of the management apparatus according to the first embodiment will be described with reference to the drawings. FIG. 2 is a flowchart illustrating the operation of the management apparatus according to the first embodiment. As illustrated in FIG. 2, the management unit 9 of the management device 5 performs virtual processing from a shared disk device that stores usage data used by the virtual machine for execution by the operation before executing the operation on the virtual machine of the virtual machine server. Move to another virtual machine server that is the operation target of the machine (S1). Furthermore, the management unit 9 executes the operation of the virtual machine after moving (S2).

  When the management unit 9 of the management apparatus 5 executes these operations based on the state of each virtual machine (when starting, moving, rebooting, etc., a predetermined time zone, etc.), or in that state For the access request to the shared disk, history information or statistical information is acquired. Based on these pieces of information, the management unit 9 analyzes the access frequency in those states, and defines a virtual machine cache definition as information that should be temporarily held (cached) in the virtual machine server for a data group having a certain access frequency. Create Based on these definitions, when an operation is executed (especially when a load increase is expected, such as when multiple operations are executed simultaneously), information on the shared disk device 4 is previously stored in the disk cache unit of the virtual machine server. Read in advance to reduce access to the shared disk device.

(Effects of the first embodiment)
According to the first embodiment, it is possible to reduce access from the virtual machine server to the shared disk device when starting or moving the virtual machine. The reason is that the management unit of the management device, before executing the operation to the virtual machine, from the shared disk device that stores the usage data that the virtual machine uses for the execution by the operation to other virtual machine operation target destinations. This is because the usage data is transferred to the disk cache unit of the virtual machine server.

(Second Embodiment)
Next, an information processing system according to the second embodiment will be described with reference to the drawings. FIG. 3 is a block diagram illustrating a configuration of the information processing system according to the second embodiment.

  The information processing system includes a virtual machine server 10, a virtual machine server 20, a shared disk device 30, and a virtual system management device 50. The virtual machine server 10, virtual machine server 20, shared disk device 30, and virtual system management device 50 are connected via a network 40.

  The control unit 7 of the virtual machine server 2 of the first embodiment corresponds to the virtual machine control unit 14, the disk control unit 15, and the cache control unit 18 of the virtual machine server 10 of the second embodiment. The management unit 9 of the management apparatus 5 of the first embodiment includes the virtual machine server control unit 51, the shared disk device control unit 52, the virtual machine server cache management unit 53, and the virtual machine server monitoring unit of the second embodiment. 54. Hereinafter, each device will be described in detail.

(Virtual machine server)
FIG. 4 is a block diagram illustrating a configuration of the virtual machine server. As shown in FIG. 4, the virtual machine server includes a virtual machine control unit 14, a disk control unit 15, a disk cache unit 16, a communication control unit 17, and a cache control unit 18.

  The virtual machine control unit 14 has a function of controlling activation or movement of the virtual machine 11, the virtual machine 12, and the virtual machine 13. Specifically, the virtual machine control unit 14 performs virtual machine power control, acquisition of virtual machine status or performance information, and virtual machines between other virtual machine servers (for example, virtual machine servers 10 and 20). Move. When the virtual machine control unit 14 operates the virtual machine according to an instruction from the external apparatus, the virtual machine control unit 14 may transmit an operation completion notification to the external apparatus that has instructed.

  The above-described virtual machine state includes a power state, an execution state, and the like of the virtual machine. The power state includes a power ON / OFF state and a standby state. The execution state includes Tool execution and execution of various processes. The execution state includes processing executed by the virtual machine when the virtual machine is started or moved. The performance information includes memory in the virtual machine or CUP performance data.

  Note that the virtual machine server may have no virtual machine (zero virtual machines). The virtual machine control unit 14 is connected to the communication control unit 17 and can control or monitor an external device via the network 40.

  The disk control unit 15 processes a disk access request from each virtual machine to the shared disk device 30. The disk control unit 15 is connected to the network 40 via the communication control unit 17, and accesses a storage area (not shown) on the shared disk device 30 via the network 40. The virtual machine stores usage data used by the virtual machine in a storage area on the shared disk device 30. The usage data includes software assigned to the virtual machine for executing various services or data for service provision. The usage data also includes usage data used when the virtual machine is activated and moved. The disk control unit 15 manages history information or statistical information of access requests to the disk cache unit 16 or the shared disk device 30 of each virtual machine. These pieces of information are provided to the external device via the network 40 by the disk control unit 15.

  The disk cache unit 16 is configured by a solid state drive or a memory. A solid state drive or memory can exchange data at a higher speed than a storage device represented by a hard disk.

  The cache control unit 18 has a function of temporarily holding and deleting information including usage data existing in the storage area of the shared disk device 30 from the disk cache unit 16. The cache control unit temporarily stores information in the disk cache unit 16 according to its own determination or a control instruction from an external device via the network 40.

  The virtual machine server 20 has the same configuration as the virtual machine server 10. Therefore, detailed description is omitted.

(Shared disk device)
FIG. 5 is a block diagram showing the configuration of the shared disk device. As shown in FIG. 5, the shared disk device 30 includes a primary cache area 31, a secondary cache area 32, a storage area 33, a disk control unit 34, and a communication control unit 35.

  The storage area 33 stores various types of information including usage data used for starting or moving the virtual machine of the virtual machine server.

  The disk control unit 34 of the shared disk device 30 is connected to the network 40 via the communication control unit 35. Further, the disk control unit 34 has a function of adding or deleting various types of information including virtual machine usage data to the storage area 33 in response to a request from an external device.

  The disk control unit 34 has a function of temporarily holding or deleting information that is frequently accessed in the storage area 33 in the primary cache area 31 and the secondary cache area 32 of the shared disk device 30. The primary cache area 31 and the secondary cache area 32 have better access performance than the storage area 33. The shared disk device 30 may be configured not to have the primary cache area 31 and the secondary cache area 32. Further, it may have a multi-layered cache area.

  In addition, the disk control unit 34 has a function of managing history information or statistical information of information including information requested to be accessed from the virtual machine servers 10 and 20 or an address of the requested information. Such information can be provided to an external device via a network.

(Virtual system management device)
The configuration of the virtual system management apparatus will be described with reference to FIG. The virtual system management device 50 is connected to the machine control unit 14, the disk control unit 15 and the cache control unit 18 of the virtual machine server 10, and the disk control unit 34 of the shared disk device 30 via the network 40.

  The virtual system management device 50 includes a virtual machine server control unit 51, a shared disk device control unit 52, a virtual machine server cache management unit 53, and a virtual machine server monitoring unit 54. Further, the virtual machine cache definition is stored in a storage unit (not shown) of the virtual system management device 50.

  The virtual machine server control unit 51 is connected to the virtual machine control unit 14 of the virtual machine servers 10 and 20 shown in FIG. The virtual machine server control unit 51 has functions of performing power control of the virtual machine and moving the virtual machine between virtual machine servers.

  The shared disk device controller 52 is connected to the disk controller 34 of the shared disk device 30 shown in FIG. The shared disk device control unit 52 has a function of acquiring history information or statistical information of information including information requested to be accessed or an address of the requested information managed by the disk control unit 34 of the shared disk device 30.

  The virtual machine server monitoring unit 54 has a function of detecting a state or failure of the virtual machine from the virtual machine control unit 14. Further, the virtual machine server monitoring unit 54 can check the operation state of the virtual machine servers 10 and 20 by accessing the virtual machine servers 10 and 20.

  The virtual machine server cache management unit 53 is connected to the disk control unit 15 of the virtual machine servers 10 and 20 shown in FIG. The virtual machine server cache management unit 53 analyzes the history / statistical information of a disk access request from the virtual machine to the shared disk device 30, and creates a virtual machine cache definition.

  Based on the created virtual machine cache definition, the virtual machine server cache management unit 53 temporarily stores various information in the storage area of the shared disk device 30 in the disk cache unit of each virtual machine server. The control unit can be instructed.

  The virtual machine server cache management unit 53 refers to the virtual machine cache definition and moves the usage data used by the virtual machine stored in the shared disk device to start or move to the disk cache unit 16 of the virtual machine servers 10 and 20. Can do.

  Next, creation of a virtual machine cache definition by the virtual system management apparatus 50 will be described with reference to the drawings. 6 and 7 are flowcharts relating to creation of a virtual machine cache definition in the second embodiment.

  The virtual system management device 50 is based on the state of each virtual machine (when starting, moving, rebooting, etc., a predetermined time zone, etc.) as a reference, and when those operations are executed or shared in that state History information or statistical information is acquired for a disk access request. Based on these pieces of information, the access frequency in those states is analyzed, and a data group having a certain access frequency is defined as information to be temporarily held (cached) in the virtual machine server.

  Hereinafter, an example of creating a virtual machine cache definition by the virtual system management apparatus 50 in the virtual machine start operation in the virtual machine server 10 will be described.

  As illustrated in FIG. 6, when the virtual system management device 50 receives an instruction to start the virtual machine of the virtual machine server 10, the virtual machine server cache management unit 53 performs the disk control unit of the target virtual machine server 10. Is instructed to start monitoring (A1).

  Next, the virtual machine server control unit 51 instructs the virtual machine control unit 14 of the virtual machine server to start the virtual machine (A2). The virtual machine control unit 14 of the virtual machine server 10 activates the virtual machine 11 (A3), and completes the activation of the virtual machine 11 (A4).

  Subsequently, the virtual machine server control unit 51 receives a notification of activation completion of the virtual machine 11 from the virtual machine control unit 14 (A5). After receiving the completion notification, the virtual machine server cache management unit 53 instructs the disk control unit 15 of the virtual machine server 10 to end monitoring (A6).

  Next, as illustrated in FIG. 7, the virtual machine server cache management unit 53 acquires history information or statistical information related to an access request from the monitoring start to the monitoring end from the disk control unit 15 of the virtual machine server 10 ( A7). Further, the virtual machine server cache management unit 53 acquires location information on the storage area for the information requested to be accessed from the shared disk device 30 (A8).

  The virtual machine server cache management unit 53 creates a virtual machine cache definition from the history information or statistical information related to the acquired access request and the location information on the storage area for the information requested to be accessed (A9). For example, the virtual machine server cache management unit 53 calculates the cache efficiency based on the access frequency and the like from the disk access statistical information and history information, and acquires the logical address information and the like of the frequently used information. Next, based on the logical address information of frequently used information, the address of the corresponding information in the storage area 33 is calculated and recorded in the virtual machine cache definition together with the logical address information and the like. Note that information indicating the status and state of the virtual machine at the time of definition creation may be attached to the virtual machine cache definition as additional information.

  The virtual machine server cache management unit 53 determines whether or not the virtual machine cache definition created when the virtual machine is in the same state (startup or the like) exists in the storage unit (not shown) (A10). When there is virtual machine cache definition information (Yes in A10), the virtual machine server cache management unit 53 integrates virtual machine cache definitions. When there is no virtual machine cache definition information, the virtual machine server cache management unit 53 saves the created virtual machine cache definition in the storage unit (A12).

Next, cache application to the disk cache unit of the virtual machine server will be described.
The following describes an example of cache application during a virtual machine move operation of a virtual machine server. FIG. 8 is a flowchart illustrating the operation of the virtual system management apparatus according to the second embodiment.

  As shown in FIG. 8, the virtual machine server control unit 51 instructs the virtual machine control unit 14 of the virtual machine server 10 to move the virtual machine 12 (B1). Next, the virtual machine server cache management unit 53 determines whether the virtual machine cache definition of the virtual machine 12 is in the storage unit (not shown) (B2). When there is no virtual machine cache definition (No in B2), the virtual machine server cache management unit 53 creates a virtual machine cache definition (B3). When there is a virtual machine cache definition (Yes in B2), the virtual machine server cache management unit 53 acquires a virtual machine cache definition for each target virtual machine (B04).

  The virtual machine server cache management unit 53 instructs the cache control unit 18 of the destination virtual machine server 20 to arrange the cache according to the virtual machine cache definition (B5). The cache control unit 18 of the virtual machine server 20 acquires information on the designated area from the shared disk device 30 and stores it in the disk cache unit 16 of the virtual machine server 20.

  The virtual machine server cache management unit 53 waits until there is a notification of completion of the cache operation from the cache control unit 18 of the virtual machine server 20. When the completion notification is received from the cache control unit 18, the virtual machine server control unit 51 instructs the virtual machine control unit 14 of each virtual machine to perform a move operation (B6).

  If there is an access request from the virtual machine to the storage area 33 on the shared disk device 30 that occurs after the migration, if the information is defined in the virtual machine cache definition, the disk cache unit 16 on the virtual machine server is used. Will be held in. Therefore, the migrated virtual machine 22 can acquire corresponding information from the disk cache unit 16 instead of an access request to the shared disk device 30. In this way, part of access to the shared disk device 30 can be replaced with access to the disk cache unit 16.

(Modification in the second embodiment)
In the above, the virtual machine server cache management unit 53 receives the logical address information of the access request from the disk control unit 15, and the shared disk device control unit 52 accesses the corresponding storage area from the disk control unit 34 of the shared disk device 30. Suppose you want to get address information. A virtual machine cache definition may be created using at least one of these pieces of information.

  In addition, if there are virtual machine cache definitions created before, a plurality of virtual machine cache definitions may be created without integrating them. When creating a virtual machine cache definition, statistical / history information acquired from the disk control unit 34 of the shared disk device 30 may be considered.

  When a cache instruction is issued to the cache control unit 18 of the virtual machine server by the virtual machine cache definition, it is not necessary to use all information defined in the virtual machine cache definition. Further, cache information to be applied may be selected based on a plurality of virtual machine cache definitions.

  The virtual machine using the virtual machine cache definition may be a part of the virtual machine on the virtual machine server. In this case, the virtual system management device 50 holds additional information for determining priority and cache application target between virtual machines, and based on this, the target to which the virtual machine cache definition is applied is determined.

  A part of the startup operation by the virtual machine server control unit 51 may be performed before the notification of the completion of the cache operation from the cache control unit 18 of the virtual machine servers 10 and 20 (high priority virtual machines are given priority). Etc.)

  The cache operation to the disk cache unit 16 of the virtual machine servers 10 and 20 based on the virtual machine cache definition may be speculatively performed in consideration of the free state of the disk cache unit 16 and the like. That is, a virtual machine cache definition may be created in advance for a stopped virtual machine, and usage data may be held in a virtual machine server. Further, in preparation for a stop due to a failure of the virtual machine server 10, a virtual machine cache definition may be created in order to transfer usage data to another virtual machine server 20 in advance, and the usage data may be held in the virtual machine server 20.

(Effect of 2nd Embodiment)
According to the second embodiment, access from the virtual machine server to the shared disk device can be reduced. The reason is that the disk cache unit of the virtual machine server holds information that is the target of the disk access request in advance for the disk access request to the shared disk device that occurs when the virtual machine operation of the virtual machine server is performed. It is.

  Further, even when a large number of virtual machines are operated, it is possible to reduce disk access requests to the shared disk device, and it is possible to prevent delays and failures of virtual machines and virtual machine servers.

  Since the disk cache unit of the virtual machine server is faster and more responsive than the shared disk device, the performance of the virtual machine can also be improved.

  In addition, when the shared disk device has a function of eliminating an overlapping area, an area shared by a plurality of virtual machines can be detected by referring to the address of the storage device on the shared disk device. For this reason, a plurality of virtual machines can collect cache operations at once for information on the same area held on the shared disk device.

  In the case of starting a virtual machine, the information required by the virtual machine is read in advance into the disk cache unit of the virtual machine server, so that the delay in starting the virtual machine can be reduced.

  Furthermore, when moving a virtual machine to another virtual machine server, the performance degradation of the virtual machine after movement can be suppressed. The reason is that unnecessary access to the shared disk device can be suppressed by holding information necessary for moving the virtual machine in advance in the disk cache unit of the destination virtual machine server.

  When a virtual machine server stops due to a failure, it is possible to restart the virtual machine on another virtual machine server while suppressing an increase in access load to the shared disk device. The reason is that by creating a virtual machine cache definition in advance, information necessary after the virtual machine is started can be acquired in advance, and the load can be reduced.

In addition, by creating a virtual machine cache definition corresponding to the state at the time of startup or the like, it is possible to efficiently configure a cache even for a disk access request that is different from the normal state.
(Hardware configuration)
FIG. 9 is a diagram showing a hardware configuration in which the management device, virtual machine server, or shared disk device in the first and second embodiments of the present invention is realized by a computer device.

  As shown in FIG. 9, the management device, the virtual machine server, or the shared disk device includes a CPU 91, a communication I / F (communication interface) 92 for network connection, a memory 93, and a storage such as a hard disk for storing a program. A device 94 is included. The CPU is connected to an input device 95 and an output device 96 via a system bus 97.

  The CPU 91 operates the operating system to control the management device, the virtual machine server, or the shared disk device according to the first and second embodiments of the present invention. Further, the CPU 91 reads out programs and data from the recording medium mounted on the drive device to the memory 93, for example.

  Further, for example, the CPU 91 has a function of processing an information signal input from the control unit and the management unit in each embodiment, and executes various functions based on a program.

  The storage device 94 is, for example, an optical disk, a flexible disk, a magnetic optical disk, an external hard disk, or a semiconductor memory. A part of the storage medium of the storage device 94 is a nonvolatile storage device, and stores a program therein. The program is connected to a communication network. It may be downloaded from an external computer (not shown).

  The input device 95 is realized by, for example, a mouse, a keyboard, a built-in key button, a card slot, or a touch panel, and is used for an input operation.

  The output device 96 is realized by a display, for example, and is used for outputting and confirming information processed by the CPU 91.

  As described above, each embodiment of the present invention is realized by the hardware configuration shown in FIG. However, the means for realizing each unit included in the management device, the virtual machine server, or the shared disk device is not particularly limited. That is, the management device, the virtual machine server, or the shared disk device may be realized by one physically coupled device, or two or more physically separated devices are connected by wire or wirelessly, You may implement | achieve by these several apparatuses.

  While the present invention has been described with reference to the embodiments (and examples), the present invention is not limited to the above embodiments (and examples). Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

  Part or all of the above-described embodiments can be described as in the following supplementary notes, but is not limited thereto.

    (Appendix 1) Before starting or moving a virtual machine of a virtual machine server, the virtual machine is started or moved from a shared disk device that stores usage data used when the virtual machine is started or moved. A management apparatus comprising a management unit that moves the usage data to a disk cache unit of a virtual machine server.

    (Supplementary Note 2) Of the usage data held in the shared disk device, usage data to be moved to the disk cache unit uses statistical information or history information of a disk access request from the virtual machine to the shared disk device. The management device according to supplementary note 1 to be determined.

(Supplementary Note 3) The determination of the usage data to be moved to the disk cache unit selects data having a certain access frequency based on the statistical information or the history information.
The management device according to attachment 2.

    (Supplementary note 4) The management apparatus according to any one of supplementary notes 1 to 3, wherein the operation is activation or movement of a virtual machine.

    (Additional remark 5) The said management part produces a virtual machine cache definition as information of the said utilization data temporarily hold | maintained in the said disk cache part of the said virtual machine server, It is any one of Additional remark 1 to 4. Management device.

    (Additional remark 6) The management apparatus of Additional remark 5 which provides the information which shows the state of the said virtual machine at the time of creation of the said definition as additional information of the said virtual machine cache definition.

    (Additional remark 7) The management apparatus of Additional remark 1 which moves the said utilization data to said other virtual machine server in advance in preparation for the stop by the failure of the said virtual machine server.

(Supplementary Note 8) Before executing an operation on a virtual machine of a virtual machine server, another virtual as an operation target of the virtual machine from a shared disk device that stores usage data used by the virtual machine for execution by the operation Move the usage data to the machine server disk cache,
A management method for starting or moving the virtual machine on the other virtual machine server after transferring the usage data.

(Additional remark 9) Before execution of operation to the virtual machine of a virtual machine server, the other virtual machine which becomes the operation target destination of the virtual machine from the shared disk device which stores the usage data which the virtual machine uses for execution by the operation Move the usage data to the machine server disk cache,
A program for causing a computer to start or move the virtual machine on the other virtual machine server after transferring the usage data.

(Supplementary Note 10) A virtual machine server on which a virtual machine is activated or moved;
A shared disk device that stores usage data used when the virtual machine is started or moved;
A management device for managing the virtual machine of the virtual machine server,
The management device
Before executing an operation on the virtual machine of the virtual machine server, another virtual machine server that is the operation target of the virtual machine from a shared disk device that stores usage data used by the virtual machine for execution by the operation. An information processing system that controls to transfer the usage data to a disk cache unit.

(Additional remark 11) It is the management method of an information processing system provided with the virtual machine server which a virtual machine starts or moves, and the shared disk apparatus which preserve | saves the utilization data used when the said virtual machine starts or moves,
Before starting or moving the virtual machine, after moving the usage data from the shared disk device to a disk cache unit of another virtual machine server that is the starting or moving destination of the virtual machine, the other virtual machine An information processing system management method for starting or moving the virtual machine on a server.

DESCRIPTION OF SYMBOLS 1 Information processing system 2 Virtual machine server 3 Virtual machine server 4 Shared disk apparatus 5 Management apparatus 6 Virtual machine 7 Control part 8 Disk cache part 9 Management part 10 Virtual machine server 11 Virtual machine 12 Virtual machine 13 Virtual machine 14 Virtual machine control part DESCRIPTION OF SYMBOLS 15 Disk control part 16 Disk cache part 17 Communication control part 18 Cache control part 20 Virtual machine server 30 Shared disk apparatus 31 Primary cache area 32 Secondary cache area 33 Storage area 34 Disk control part 35 Communication control part 40 Network 50 Virtual system Management device 51 Virtual machine server control unit 52 Shared disk device control unit 53 Virtual machine server cache management unit 54 Virtual machine server monitoring unit 91 CPU
92 Communication I / F (communication interface)
93 Memory 94 Storage Device 95 Input Device 96 Output Device 97 System Bus

Claims (10)

  Before executing an operation on a virtual machine of a virtual machine server, a disk of another virtual machine server that is the operation target of the virtual machine from a shared disk device that stores usage data that the virtual machine uses for execution by the operation A management apparatus comprising a management unit that moves the usage data to a cache unit. Of the usage data held in the shared disk device, the usage data to be moved to the disk cache unit is determined using statistical information or history information of a disk access request from the virtual machine to the shared disk device. ,
The management apparatus according to claim 1. The determination of the usage data to be moved to the disk cache unit selects data having a certain access frequency based on the statistical information or the history information.
The management device according to claim 2. The operation is activation or movement of the virtual machine.
The management apparatus as described in any one of Claim 1 to 3. The management unit creates a virtual machine cache definition as information of the usage data temporarily stored in the disk cache unit of the virtual machine server;
The management device according to any one of claims 1 to 4. As the additional information of the virtual machine cache definition, give information indicating the state of the virtual machine at the time of creation of the definition,
The management device according to claim 5.   The management apparatus according to claim 1, wherein the use data is moved to the other virtual machine server in advance in preparation for a stop due to a failure of the virtual machine server. Before executing an operation on a virtual machine of a virtual machine server, a disk of another virtual machine server that is the operation target of the virtual machine from a shared disk device that stores usage data that the virtual machine uses for execution by the operation Move the usage data to the cache,
A management method for starting or moving the virtual machine on the other virtual machine server after transferring the usage data. Before executing an operation on a virtual machine of a virtual machine server, a disk of another virtual machine server that is the operation target of the virtual machine from a shared disk device that stores usage data that the virtual machine uses for execution by the operation Move the usage data to the cache,
A program for causing a computer to start or move the virtual machine on the other virtual machine server after transferring the usage data. A virtual machine server on which the virtual machine starts or moves; and
A shared disk device that stores usage data used when the virtual machine is started or moved;
A management device for managing the virtual machine of the virtual machine server,
The management device
Before the virtual machine server performs an operation on the virtual machine, another virtual machine server that is the operation target of the virtual machine from a shared disk device that stores usage data used by the virtual machine for execution by the operation Control to move the usage data to the disk cache unit of
Information processing system.

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