JP2010026828A - Method for controlling virtual computer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To dispense with a physical server for a management server to reduce the cost for physical computers and facilitate operation management of virtual computers by a manager by using and assigning surplus resources of a physical server to a virtual server for management. <P>SOLUTION: A virtual computer system in which a plurality of virtual computers and a virtual computer for management of the system are operated on a physical computer under the control of a control program includes means for collecting and storing load information of the virtual computers operated on the physical computer, and the CPU capability and memory capacity of the physical computer; and means for the virtual computer for management to read the stored load information of the virtual computers and CPU capability and memory capacity of the physical computer. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a computer management method, and more particularly to a method for effectively utilizing CPU and memory resources that are wasted in a virtual computer system.

  The number of servers held in enterprise computer systems and enterprise data centers is increasing. Along with this, the operation management cost of the server is increasing.

  In order to solve this problem, a technique for virtualizing a server is known. The technology for virtualizing a server is a technology in which a plurality of virtual servers can operate on a single physical server. Specifically, resources such as a processor (CPU) and a memory included in the physical server are divided, and the divided resources of the physical server are allocated to a plurality of virtual servers, respectively. A plurality of virtual servers operate simultaneously on a single physical server.

  Today, demand for technology for virtualizing servers is increasing due to improved processing performance of CPUs and lower costs of resources such as memory.

  In addition to the advantage that multiple virtual servers can operate on a single physical server, the technology for virtualizing servers makes more effective use of physical server resources by managing workload on multiple virtual servers. can do.

  Here, the workload management is to change the amount of resources such as the CPU and memory of the physical server allocated to the virtual server according to the situation such as the load on the virtual server. For example, when the load of a certain virtual server increases, the physical server resources allocated to the low-load virtual server operating on the same physical server are allocated to the high-load virtual server. As a result, the resources of the physical server can be used effectively.

  Conventionally, workload management of a plurality of virtual servers operating on a single or a plurality of physical servers has been performed using a management server composed of a single physical server (see Patent Document 1).

JP 2007-323245 A

  In order to perform workload management that changes the amount of physical server resources allocated to the virtual server according to the status of the virtual server load, etc., estimate the physical server resource amount required for each virtual server in advance. Therefore, it is necessary to determine the resource amount of the physical server in the entire computer system according to the estimate.

  In addition, when estimating the resource amount of the physical server, it is necessary to prepare in advance enough resources to withstand a high load.

  If sufficient resources are not allocated and an excessive load is applied to the computer system, a serious problem such as extremely slow processing of a virtual server generally called slowdown may occur.

  However, if too much resources are provided to prevent slowdown, the resources are not fully utilized at low loads and are wasted, resulting in a problem of low cost performance.

  An object of the present invention is to allocate this wasteful surplus resource to a virtual server that operates for monitoring or maintenance management of the entire system, and effectively uses it for operation management and the like.

  Controlled by a plurality of physical computers having a processor for performing arithmetic processing, a memory connected to the processor, and an interface connected to the memory, a plurality of virtual computers operating on the physical computer, and a virtual computer for system management A virtual computer system that operates under the control of a program, the control program collecting virtual computer load information storage means for collecting and storing load information of the virtual computer operating on the physical computer, and CPU capacity and memory capacity of the physical computer Physical computer performance information storage means for collecting and storing virtual machine load information stored in the virtual machine load information storage means, and the CPU capacity and memory capacity of the physical computer stored in the physical computer performance information storage means are managed. A virtual computer system comprising means for reading by a virtual computer for use.

  According to the embodiment of the present invention, by using the surplus resources of the physical server and allocating to the management virtual server, the physical server for the management server is not required, the cost of the physical server is reduced, and the administrator's virtual server Operation management can be facilitated.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing a configuration of a computer system according to the first embodiment of this invention.

  The computer system according to this embodiment includes a physical server 100 and a client terminal 114. The physical server 100 and the client terminal 114 are connected to the network 113.

  The client terminal 114 is a terminal operated by a system administrator, and is configured from a computer including a display unit, an input unit, a communication control unit, and the like. When the system administrator manages the physical server 100, the client terminal 114 is used. To operate the physical server 100 via the network 113.

  A plurality of virtual servers 111 and a virtual management server 112 are constructed in one physical server 100 by the server virtualization program ram 110 in the physical server 100. The virtual management server 112 is a maintenance management virtual server newly provided in the present invention. Note that the server virtualization program 110 may be application software that constructs a virtual server 111 that operates on a hypervisor or an operating system, for example.

  FIG. 2 is a block diagram of the physical server 100 according to the first embodiment of this invention.

  The physical server 100 includes a memory 200, a CPU (Central Processing Unit) 201, a network I / F (Interface) 202, a SCSI I / F (Small Computer System Information) 203, a BMC (Baseboard Management Control) 204, and the like.

  The memory 200, the network I / F 202, and the SCSI I / F 203 are connected to the CPU 201.

  A server virtualization program 110 is stored in the memory 200.

  The physical server 100 is connected to the network 113 by the network I / F 202. The BMC 204 is also connected to the network 113. The SCSI I / F 203 is connected to a hard disk device (HDD) 205 that stores a program executed by the physical server 100. The network I / F 202 is an interface for communication between a program executed on the physical server 100 and an external device.

  The BMC 204 mainly manages the hardware status of the physical server 100 such as the CPU 201 and the memory 200. For example, when the BMC 204 detects a failure of the CPU 201, the BMC 204 notifies other devices via the network 113 that a failure has occurred in the CPU 201. In addition, the BMC 204 has means capable of communicating with the server virtualization program 110 and the firmware 206. The exchange between the server virtualization program 110 and the firmware 206 is performed by calling a function provided by the firmware.

  When the physical server 100 is activated, the server virtualization program 110 is loaded from the hard disk device 205 to the memory 200, and the server virtualization program 110 is activated. Then, the server virtualization program 110 constructs a plurality of virtual servers 111 and a virtual management server 112.

  Specifically, the server virtualization program 110 divides and allocates resources such as the CPU 201 and the memory 200 of the physical server 100 to the virtual server 111 and the virtual management server 112, whereby a plurality of virtual servers 111 and The virtual management server 112 is constructed. Each constructed virtual server 111 and virtual management server 112 can run an OS (Operating System) 207.

  A load information collection agent (PM) 208 is provided on the OS 207 running on the virtual server 111, and load information of the virtual server 111 is periodically acquired. A management manager 209 is provided on the OS 207 running on the virtual management server 112 to manage load information of the virtual server 111.

  The server virtualization program 110 includes an initialization processing unit 210 and a resource management unit 211. The initialization processing unit 210 and the resource management unit 211 are subprograms of the server virtualization program 110.

  The initialization processing unit 210 constructs the virtual server 111 and the virtual management server 112, and sets the allocation amount of the CPU and memory resources of the physical server 100 to the virtual server 111 and the virtual management server 112. The resource management unit 211 collects and stores load information of the virtual server 111 and collects and stores the CPU capacity and memory capacity of the physical server 100.

  FIG. 3 shows the configuration of the initialization processing unit 210 and the resource management unit 211 included in the server virtualization program 110. The initialization processing unit 210 includes a management server initialization unit 301 and a virtual server initialization unit 302. The management server initialization unit 301 performs initial processing and activation of the virtual management server 112, sets the allocation amount of the resources of the CPU 201 and the memory 200 of the physical server 100 to the virtual management server 112, and the virtual server initialization unit 302 Then, initial processing and activation of the virtual server 111 and setting of the allocation amount of the resources of the CPU 201 and the memory 200 of the physical server 100 to the virtual server 111 are performed.

  The resource management unit 211 includes a virtual server load information unit 303 and a physical server performance information unit 304. The virtual server load information unit 303 collects and stores load information collection on each virtual server 111 acquired by the load information collection agent (PM) 208. The physical server performance information unit 304 collects and stores the CPU capacity and memory capacity of the physical server 100.

  FIG. 4 shows the data storage state of the memory 200.

  When the server virtualization program 110 is activated, the server virtualization program 110 stored in the hard disk device 205 is loaded into the corresponding section (400) of the memory 200. The virtual server load information 401 stores information collected by the virtual server load information unit 303. The physical server performance information 402 stores information collected by the physical server performance information unit 304. The server virtualization program 110 specifically permits the virtual server load information 401 and the physical server performance information 402 to be read from the management manager 209 operating on the virtual management server 112.

  Reference numeral 403 denotes a virtual server management mode flag. Whether the virtual server 111 on the physical server 100 is managed by a virtual management server in the physical server to which the virtual server 111 belongs or is managed from a virtual management server in another physical server. A flag indicating whether or not there is stored.

  Reference numeral 404 denotes a virtual server information table that stores information on resource allocation of the CPU 201 and memory 200 of the physical server 100 allocated to each virtual server.

  Areas used by the virtual management server 112 and the virtual server 111 are allocated to 405 and 406, respectively.

  FIG. 5 shows a processing procedure of the resource management unit 211 in response to a read request for the virtual server load information 401 and the physical server performance information 402 from the management manager 209 operating on the virtual management server 112.

  First, a call for reading the virtual server load information 401 or the physical server performance information 402 from the management manager 209 is accepted (step 501). Here, in the call for the read request, an ID of the virtual management server 112 that is the information request source, and a flag indicating whether the read request target is a read request for the virtual server load information 401 or a request for the physical server performance information 402 are arguments. As given.

  Next, the resource management unit 211 determines the request source of the read request call from the information request source ID (step 502). In the case of a request from a virtual server other than the management manager 209, the process is terminated without reading. In the case of a read request call from the management manager 209, next, it is determined whether the request to read the virtual server load information 401, the request for the physical server performance information 402, or information to be read from the call argument (steps 503 and 504). ). In the case of a read request of the virtual server load information 401, the data of the virtual server load information 401 is returned, and in the case of the read request of the physical server performance information 402, the data of the physical server performance information 402 is returned (step 505, 506).

  The management manager 209 operating on the virtual management server 112 manages the load information of the virtual server 111 using the virtual server load information 401 and the physical server performance information 402 read from the resource management unit 211, and controls the load of the virtual server. Depending on the situation, the amount of resources such as the CPU 201 and the memory 200 of the physical server 100 allocated to the virtual server is changed in the virtual server information table 404 of the server virtualization program 110 to perform workload management.

  FIG. 6 shows details of the virtual server information table 404. Here, an example in which two virtual servers 1 and 2 exist will be described. Reference numeral 601 denotes a virtual server name column. Reference numeral 602 denotes a memory capacity setting field, and reference numeral 605 denotes a CPU resource setting field, which indicates a memory capacity given to each virtual server designated by the user or the management manager 209 and a CPU resource allocation ratio. Reference numerals 603 and 606 indicate the memory capacity and CPU resource allocation actually allocated to the virtual server. Reference numerals 604 and 607 indicate memory capacity that has not yet been allocated and CPU resource allocation (unallocated).

Here, between the memory capacity setting field 602 and the CPU resource setting field 605 specified by the user or the manager 209 and the unallocated memory capacity 604 and the CPU resource allocation 607, (Equation 1), (Equation 2) There is a relationship of Formula (Formula 3), Formula (4), and Formula (5).
(Equation 1)
ma = 100- (m1 + m2) R
(Equation 2)
0 <m1 + m2 ≦ 100
(Equation 3)
ca = 100- (c1 + c2) R
(Equation 4)
0 <c1 + c2 ≦ 100
(Equation 5)
R = (0.9 + 0.1k)
Here, k in equation (5) is the value of the virtual server management mode flag 403, and k = 0 when the virtual server 111 is managed by a virtual management server in the physical server to which the virtual server 111 belongs. When managed from a virtual management server in another physical server, k = 1. As an initial value of the virtual server management mode flag 403, k = 0 is set.

  For example, when the virtual server 111 is managed by the virtual management server 112 in the physical server to which the virtual server 111 belongs by the virtual server management mode flag 403 (k = 0), the memory capacity and CPU resource allocation in the physical server When all of these are 100%, m1 = 60%, m2 = 40%, c1 = 50%, c2 = 50% and all (100%) resources in the physical server are specified. The memory capacity and CPU resource allocation actually allocated to the virtual server are as follows: m1R = 54% (60% × 0.9), m2R = 36% (40% × 0.9), c1R = 45% (50% × 0.9), c2R = 45% (50% × 0.9), and unallocated memory and CPU have ma = 10% and ca = 10%. This ma = 10% and ca = 10% are allocated to the virtual management server 112.

  Next, a method for setting memory and CPU resources in this embodiment will be described.

  When the physical server 100 is activated and the server virtualization program 110 is activated, the initialization processing unit 210 in the server virtualization program 110 constructs the virtual server 111 and the virtual management server 112, and the CPU and memory of the physical server 100 The amount of resources allocated to the virtual server 111 and the virtual management server 112 is set.

  FIG. 7 is a flowchart of a memory and CPU resource setting method by the initialization processing unit 210.

  First, the virtual server management mode flag 403 in the memory 200 is read (step 701).

  Next, the values of the virtual server information table 404 are determined by calculating the formulas (1) to (5), and CPU and memory resources allocated to the virtual server 111 and the virtual management server 112 are secured (step 702).

  Next, the value of the virtual server management mode flag 403 is determined (step 703). If the value of the virtual server management mode flag 403 is k = 0, then the unallocated memory capacity and CPU resource allocation 604 and 607 in the virtual server information table 404 are allocated to the virtual management server 112, and the virtual management server 112 Is activated (step 704). If the value of the virtual server management mode flag 403 is k = 1, step 704 is skipped. Next, the memory capacity and CPU resource allocation 603 and 606 are allocated to the virtual server 111 and activated (step 705).

  Control related to allocation of physical server resources to virtual servers in an environment where both physical servers and virtual servers coexist.

It is a figure which shows the computer system of the 1st Embodiment of this invention. It is a block diagram of the physical server of the 1st Embodiment of this invention. It is a figure which shows the structure of the initialization process part and resource management part in FIG. It is a figure which shows the storage state of the data of the memory in FIG. It is a figure which shows the process sequence of the resource management part in FIG. It is a figure which shows the virtual server information table detail in FIG. It is a figure which shows the process sequence of the initialization process part in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Physical server, 110 ... Server virtualization program ram, 111 ... Virtual server, 112 ... Virtual management server, 113 ... Network, 114 ... Client terminal, 200 ... Memory, 201 ... CPU, 202 ... Network I / F, 203 ... SCSI I / F, 204 ... BMC, 205 ... hard disk device, 206 ... firmware, 207 ... OS, 208 ... load information collection agent, 209 ... management manager, 210 ... initialization processing unit, 211 ... resource management unit.

Claims (3)

A plurality of physical computers including a processor for performing arithmetic processing, a memory connected to the processor, and an interface connected to the memory, a plurality of virtual computers operating on the physical computer, and a virtual for system management A virtual computer system in which a computer operates under the control of a control program,
The control program includes virtual machine load information storage means for collecting and storing load information of a virtual machine operating on the physical computer, and physical computer performance information storage means for collecting and storing the CPU capacity and memory capacity of the physical computer. Means for reading the load information of the virtual machine stored by the virtual machine load information storage means and the CPU capacity and memory capacity of the physical computer stored by the physical computer performance information storage means by the management virtual machine A virtual computer system comprising:   The management virtual machine changes a CPU capacity and a memory capacity allocation rate of the physical machine allocated to the virtual machine based on the read load information of the virtual machine. 1. The virtual machine system according to 1.   The virtual computer system according to claim 1, wherein the control program includes means for preferentially securing a CPU capacity and a memory capacity allocation rate of the physical computer allocated to the management virtual computer.

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