CN103513940A - Method for on-line extension of disk size of virtual machine and virtual system console - Google Patents
Method for on-line extension of disk size of virtual machine and virtual system console Download PDFInfo
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Abstract
The invention discloses a method for on-line extension of the disk size of a virtual machine and a virtual system console. The method comprises the steps that the console obtains information for expanding the disk size of the virtual machine, the information for expanding the disk size comprises an identification label number of the virtual machine and the size of a disk expansion space applied by a virtual machine disk, a disk expansion space is generated in a storage disk according to the size of the disk expansion space applied by the virtual machine disk and on the basis of a preset distribution rule, and the virtual machine needing expansion of the disk size is found according to the analyzed identification label number of the virtual machine; configuration information of the virtual machine is modified and stored according to the property of the disk expansion space, and the disk expansion space of the storage disk is distributed to the disk of the virtual machine. According to the method, on-line extension of the disk size of the virtual machine can be conducted without interrupting an operation system of the virtual machine, and therefore continuity of service of the virtual machine is guaranteed.
Description
Technical field
The present invention relates to Computer Storage field, be specifically related to method and virtual system control desk that a kind of virtual machine is expanded disk size online.
Background technology
Virtual is that the physical resource of server is invented to logical resource, allow a physical server become several even up to a hundred virtual servers of mutually isolating, thereby improve the utilization factor of hardware resource, simplify system management, realize Server Consolidation, the needs that user can be met various new business or activate business with minimum cost, are therefore subject to the whole world and pay close attention to more and more widely.
Virtual machine refer to by software simulation have complete hardware system function, operate in a complete computer in complete isolation environment, after the actual resources such as one or more processors, internal memory or storage device are gathered, the virtual platform being established on actual resource.
Due to virtual machine be framework on actual resource, so user may run into the situation of inadequate resource, the i.e. not enough situation of virtual machine disk size when using virtual machine.In prior art, when the disk size of virtual machine is expanded, on basis by the former disk file at virtual machine, increasing space realizes, the disk management of operating system just can identify the disk after expansion after only restarting system, this just probably causes service disconnection ，Gei enterprise to cause unnecessary loss.
Summary of the invention
In view of this, method and virtual system control desk that the embodiment of the present invention provides a kind of virtual machine to expand online disk size, need to restart the problem of VME operating system while solving virtual machine extension disk size.
On the one hand, a kind of method that the embodiment of the present invention provides virtual machine to expand online disk size, described method comprises:
Control desk obtains the information of virtual machine extension disk size, and the information of described expansion disk size comprises the size of the identify label number of virtual machine and the expansion disk space of virtual machine disk application;
Control desk is resolved the information of described expansion disk size, according to the expansion disk space size of described virtual machine disk application, based on default allocation rule, generates an expansion disk space in memory disk;
The identify label number of the virtual machine being resolved to described in control desk basis, finds the virtual machine that will expand disk size;
Control desk is according to the attribute modification of described expansion disk space and preserve the configuration information of described virtual machine, and the expansion disk space of described memory disk is distributed to virtual machine disk.
Further, the information that described control desk obtains virtual machine extension disk size comprises:
Control desk detects the utilization rate of the disk size of each virtual machine;
When the utilization rate that the disk space capacity of virtual machine detected when control desk surpasses setting threshold, trigger the information of the expansion disk size that forms described virtual machine.
Further, control desk is resolved the information of described expansion disk size, according to the expansion disk space size of described virtual machine disk application, generates an expansion disk space comprise based on default allocation rule in memory disk:
Control desk is resolved the information of described expansion disk size, obtains the identify label number of described virtual machine and the expansion disk space of virtual machine disk application size;
Control desk judges whether the disk size after described virtual machine disk expansion surpasses the rated capacity of described virtual machine disk;
When the disk size after the expansion of virtual machine disk is less than described rated capacity, the size of the residual memory space of control desk detection of stored disk;
Control desk judges whether the residual memory space of memory disk is greater than the size of the expansion disk space of virtual machine disk application;
When the residual memory space of memory disk is greater than expansion disk space big or small of virtual machine disk application, control desk is controlled described memory disk and is generated a big or small identical expansion disk space of the expansion disk size of applying for virtual machine disk.
Further, described memory disk comprises any one in memory device, hard disk or disk array.
On the other hand, the embodiment of the present invention provides a kind of virtual system control desk, comprising:
Acquiring unit, for obtaining the information of virtual machine extension disk size, the information of described expansion disk size comprises the size of the identify label number of virtual machine and the expansion disk space of virtual machine disk application;
Resolution unit for resolving the information of described expansion disk size, according to the expansion disk space size of described virtual machine disk application, generates an expansion disk space based on default allocation rule in memory disk;
Search unit, for according to the identify label number of the virtual machine being resolved to, find the virtual machine that will expand disk size;
Revise dispensing unit, for according to the attribute modification of described expansion disk space and preserve the configuration information of described virtual machine, the expansion disk space of described memory disk is distributed to virtual machine disk.
Further, described acquiring unit comprises:
The first detection sub-unit, for detection of the utilization rate of the disk size of each virtual machine;
Trigger subelement, for when the utilization rate of the disk space capacity of virtual machine being detected and surpass setting threshold, trigger the information of the expansion disk size of the described virtual machine of formation.
Further, resolution unit comprises:
Resolve subelement, for resolving the information of described expansion disk size, obtain the identify label number of described virtual machine and the expansion disk space of virtual machine disk application size;
The first judgment sub-unit, for judging whether the disk size after described virtual machine disk expansion surpasses the rated capacity of described virtual machine disk;
The second detection sub-unit, while being less than described rated capacity for the disk size after the expansion of virtual machine disk, the size of the residual memory space of detection of stored disk;
The second judgment sub-unit, for judging whether the residual memory space of memory disk is greater than the size of the expansion disk space of virtual machine disk application;
Disk space generates subelement, when being greater than expansion disk space big or small of virtual machine disk application when the residual memory space of memory disk, controlling described memory disk and generate a big or small identical expansion disk space of the expansion disk size of applying for virtual machine disk.
Further, described memory disk comprises any one in memory device, hard disk or disk array.
The present invention obtains the information of virtual machine extension disk size by control desk, by resolving the information of described expansion disk size, according to the expansion disk space size of described virtual machine disk application, based on default allocation rule, at memory disk, generate an expansion disk space, according to the identify label number of the virtual machine being resolved to, find the virtual machine that will expand disk size, control desk is according to the attribute modification of described expansion disk space and preserve after the configuration information of virtual machine, the expansion disk space of memory disk is distributed to virtual machine disk, while making thus virtual machine expand disk size online, do not need to restart VME operating system, guaranteed the continuity of virtual machine business.
Accompanying drawing explanation
To the person of ordinary skill in the art is more clear that above-mentioned and other feature and advantage of the present invention by describe exemplary embodiment of the present invention in detail with reference to accompanying drawing below, in accompanying drawing:
Fig. 1 is the method flow diagram that the virtual machine of first embodiment of the invention is expanded disk size online;
Fig. 2 is the method flow diagram that the virtual machine of second embodiment of the invention is expanded disk size online;
Fig. 3 is the structural drawing of the virtual system control desk of third embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, in accompanying drawing, only show part related to the present invention but not full content.
Method and virtual system control desk that the virtual machine of the embodiment of the present invention is expanded disk size online can run in the virtual environment that virtual machine is installed, this virtual environment including but not limited to, for example: the virtual system software that the VirtualBox(Germany Yi Jia InnoTek of software company develops, by Sun, purchased afterwards, be renamed as Sun Virtual Box, can virtual system comprise Windows various version, Mac OS X, Linux, OpenBSD, Solaris, IBM OS2 and Android4.0 etc. operating system), environment of VMware Workstation(and the real the same virtual machine of computing machine can move the various distribution versions of Linux simultaneously, Dos, Windows various version and Unix etc.), VirtualPC(can move a plurality of operating system on a PC simultaneously, without restarting systems, can between operating system, switch, and this operating system can be DOS, Windows95, Windows98, Windows ME, Windows2000, Windows XP, Windows Server2003, UNIX and Linux etc.).
Figure 1 illustrates the first embodiment of the present invention.
Fig. 1 is for expanding online the realization flow of disk size method according to the virtual machine of first embodiment of the invention, the method, applicable to comprising in the virtual system of control desk and at least one virtual machine, is carried out by control desk, and details are as follows for this realization flow:
Step 110, control desk obtain the information of virtual machine extension disk size, and the information of described expansion disk size comprises the size of the identify label number of virtual machine and the expansion disk space of virtual machine disk application.
In embodiments of the present invention, before setting up virtual machine, the supervising device of virtual machine preferably can limit the disk amount of virtual machine maximum, and can detect virtual machine disk and use number percent, thereby the resource service condition of monitoring virtual machine, when the disk utilization rate of virtual machine surpasses setting threshold, just can trigger the information of expansion disk size, for example: the rated capacity of virtual machine disk is 8G, when the disk utilization rate of virtual machine is greater than 80%, the disk of virtual machine just can trigger the behavior of expansion disk automatically, to supervising device, send the information of expansion disk size, wherein, the information of described expansion disk size comprises the size of the identify label number of virtual machine and the expansion disk space of virtual machine disk application, the full name of the identify label number of described virtual machine is universal account (Virtual identity electronic identification, be called for short ID), being commonly called as of ID is " network identification card ", it is a kind of Internet authentication agreement, there is uniqueness and information non-repudiation, according to the identify label number of virtual machine, can uniquely find the virtual machine that need to expand disk size.
Step 120, control desk are resolved the information of described expansion disk size, according to the expansion disk space size of described virtual machine disk application, based on default allocation rule, at memory disk, generate an expansion disk space.
In the present embodiment, when virtual machine sends the information of expansion disk size, control desk can be according to the expansion disk space size of described virtual machine disk application, based on default allocation rule, to one of memory disk application, expand disk space, be for example the disk space identical with the expansion disk space size of virtual machine disk application, or can also be to be the space of preset proportion with the expansion disk space size of application.The disk space automatic hanging that memory disk is generated is downloaded on virtual machine disk, thereby expand the disk size of virtual machine, described memory disk can be preferably memory device, any one in hard disk or disk array, wherein, described memory device includes, but are not limited to, for example: magnetic tape station, tape library, disk array, the SUN network storage, the NAS network storage, the IP SAN network storage, VTL, CD server and CD server etc., described hard disk (Hard Disk Drive, be called for short HDD) include, but are not limited to, for example: solid state hard disc (SSD), mechanical hard disk (HDD) and hybrid hard disk (HHD) etc., described disk array (Redundant Arrays of Inexpensive Disks, be called for short RAID) be to utilize array mode to make disk group, coordinate the design of data dispersed arrangement, thereby promote the security of data, described disk array includes, but are not limited to, for example: circumscribed magnetic disk array cabinet, internal connecting type magnetic disc array card or utilize mode of software emulation etc.
Step 130, control desk, according to the identify label number of the virtual machine being resolved to, find the virtual machine that will expand disk size.
In the present embodiment, according to the identify label number of the virtual machine being resolved to, described identify label number is unique identify label of virtual machine, according to the identify label of virtual machine in expansion disk size information, can uniquely find the virtual machine that will expand disk size.
Step 140, control desk are according to the attribute modification of described expansion disk space and preserve the configuration information of described virtual machine, and the expansion disk space of described memory disk is distributed to virtual machine disk.
In the present embodiment, control desk is according to the attribute of described expansion disk space, revise and preserve the configuration information of the virtual machine that will expand disk size finding according to identification information, the configuration information of expansion disk is added in the configuration information of virtual machine disk, described configuration information can comprise title, identify label, memory size, disk size and the virtual unit information of virtual machine, thereby the expansion disk space of memory disk is distributed to virtual machine disk.
The virtual machine that the present embodiment provides is expanded the method for disk size online, by resolving the information of virtual machine extension disk size, resolve after the information of described expansion disk size, by revising the configuration information of virtual machine, the configuration information of expansion disk is added in virtual machine disk, thereby the expansion disk space of memory disk is distributed to virtual machine disk, in this process, do not need to restart VME operating system, guaranteed the continuity of virtual machine business.
Figure 2 illustrates the second embodiment of the present invention.
Fig. 2 is for expanding online the realization flow of disk size method according to the virtual machine of second embodiment of the invention, the method, applicable to comprising in the virtual system of control desk and at least one virtual machine, is carried out by control desk, and details are as follows for this realization flow:
Step 210, control desk detect the utilization rate of the disk size of each virtual machine.
When step 220, the utilization rate that the disk space capacity of virtual machine detected when control desk surpass setting threshold, trigger the information of the expansion disk size that forms described virtual machine.
Step 230, control desk are resolved the information of described expansion disk size, obtain the identify label number of described virtual machine and the expansion disk space of virtual machine disk application size.
Step 240, control desk judge whether the rear disk size of described virtual machine disk expansion surpasses the rated capacity of described virtual machine disk, if so, can send the information that expansion is failed, if not, performs step 250.
When the disk size after virtual machine disk expansion is greater than rated capacity, control desk sends the information that disk size after virtual machine extension is greater than rated capacity, disk size that can not EVM(extended virtual machine); When the disk size after the expansion of virtual machine disk is less than rated capacity, perform step 250.
The size of the residual memory space of step 250, control desk detection of stored disk.
Described memory disk can be any one in memory device, hard disk or disk array.
Step 260, control desk judge whether the residual memory space of memory disk is greater than the size of the expansion disk space of virtual machine disk application, if so, performs step 270, if not, can send the information that expansion is failed.
When the remanence disc storage space of memory disk is less than the expansion disk space of virtual machine disk application, control desk sends the information of memory disk residual memory space deficiency, the operation failure of EVM(extended virtual machine) disk size; When the residual memory space of memory disk is greater than the expansion disk space of virtual machine disk application, perform step 270.
Step 270, control desk are controlled described memory disk and are generated an identical expansion disk space of expansion disk size size of applying for virtual machine disk.
The identify label number of the virtual machine that step 280, basis are resolved to, finds the virtual machine that will expand disk size.
Step 290, control desk are according to the attribute modification of described expansion disk space and preserve the configuration information of described virtual machine, and the expansion disk space of memory disk is distributed to virtual machine disk.
In the present embodiment, described configuration information comprises the title of virtual machine, identify label number, memory size, disk size and virtual unit information, when EVM(extended virtual machine) disk, first according to the identify label number of virtual machine in described expansion disk size information, find the virtual machine that will expand disk size, then according to the attribute of described expansion disk space, revise and preserve the configuration information of virtual machine, while revising configuration information, the configuration information of expansion disk is joined in the configuration information of virtual machine disk, virtual machine is according to amended configuration information, in hard disk management or volume manager, find expansion disk, automatically the expansion disk space of memory disk is mounted in virtual machine disk, realize virtual machine and expand online the object of disk size.
The virtual machine that the present embodiment provides is expanded the method for disk size online, the disk space that the application of virtual machine disk can not occur is greater than the situation of memory disk residual memory space, and when expansion disk size, do not need to restart VME operating system, guaranteed the continuity of virtual machine business.
Figure 3 illustrates the third embodiment of the present invention.
Fig. 3 is according to the structural drawing of the virtual system control desk of third embodiment of the invention.This virtual system control desk is applicable to comprising in the virtual system of at least one virtual machine, and as shown in Figure 3, the virtual system control desk described in the present embodiment specifically comprises: acquiring unit 31, resolution unit 32, search unit 33 and revise dispensing unit 34.
Wherein, acquiring unit 31 is for obtaining the information of virtual machine extension disk size, and the information of described expansion disk size comprises the size of the identify label number of virtual machine and the expansion disk space of virtual machine disk application.Resolution unit 32, for resolving the information of described expansion disk size, according to the expansion disk space size of described virtual machine disk application, generates an expansion disk space based on default allocation rule in memory disk.Search unit 33 for according to the identify label number of the virtual machine being resolved to, find the virtual machine that will expand disk size.Revise dispensing unit 34 for according to the attribute modification of described expansion disk space and preserve the configuration information of described virtual machine, the expansion disk space of described memory disk is distributed to virtual machine disk.
In the present embodiment, described configuration information can comprise the title of virtual machine, identify label number, memory size, disk size and virtual unit information, when EVM(extended virtual machine) disk, first according to the identify label number of virtual machine in described expansion disk size information, find the virtual machine that will expand disk size, and then revise and preserve the configuration information of virtual machine, while revising configuration information, the configuration information of memory disk is joined in the configuration information of virtual machine disk, virtual machine is according to amended configuration information, in hard disk management or volume manager, find memory disk, automatically the expansion disk space of memory disk is mounted in virtual machine disk, realize virtual machine and expand online the object of disk size.
In the 3rd embodiment, described acquiring unit 31 preferably can comprise:
The first detection sub-unit 311, for detection of the utilization rate of the disk size of each virtual machine.
On the basis of such scheme, described resolution unit 32 preferably can specifically comprise:
The first judgment sub-unit 322, for judging whether the rear disk size of described virtual machine disk expansion surpasses the rated capacity of described virtual machine disk.
The second detection sub-unit 323, while being less than rated capacity for the disk size after the expansion of virtual machine disk, the size of the residual memory space of detection of stored disk.
Further, described memory disk can be any one in memory device, hard disk or disk array.
The second judgment sub-unit 324, for judging whether the residual memory space of memory disk is greater than the space of the expansion capacity of virtual machine disk application.
When the residual memory space of memory disk is less than the expansion disk space of virtual machine disk application, send the information of memory disk residual memory space deficiency, the operation failure of EVM(extended virtual machine) disk size; When the residual memory space of memory disk is greater than the space of expansion capacity of virtual machine disk application, described memory disk generates the disk space of the expansion disk formed objects that and virtual machine disk apply for.
Disk space generates subelement 325, while being greater than the space of expansion capacity of virtual machine disk application for the residual memory space when memory disk, and an identical disk space of expansion disk size of applying for virtual machine disk of described memory disk generation.
The virtual machine that the embodiment of the present invention provides is expanded method and the virtual system control and monitor console of disk size online, by control desk, obtain the information of virtual machine extension disk size and resolve the information of described expansion disk size, according to the expansion disk space size of virtual machine disk application, based on default allocation rule, in memory disk, generate an expansion disk space, again according to the identify label number of virtual machine, find the virtual machine that will expand disk size, according to the space attribute of described expansion disk, revise and preserve after the configuration information of virtual machine disk, the expansion disk space of memory disk is distributed to virtual machine disk, thus, realized the online expansion of virtual machine disk size, and method and supervising device that the virtual machine that the embodiment of the present invention provides is expanded disk size online do not need to restart VME operating system, guaranteed the continuity of virtual machine business.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can realize with the executable program code of computer installation, thereby they can be stored in memory storage and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to the combination of any specific hardware and software.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, to those skilled in the art, the present invention can have various changes and variation.All any modifications of doing, be equal to replacement, improvement etc., within protection scope of the present invention all should be included within spirit of the present invention and principle.
Claims (8)
1. virtual machine is expanded a method for disk size online, it is characterized in that, described method comprises:
Control desk obtains the information of virtual machine extension disk size, and the information of described expansion disk size comprises the size of the identify label number of virtual machine and the expansion disk space of virtual machine disk application;
Control desk is resolved the information of described expansion disk size, according to the expansion disk space size of described virtual machine disk application, based on default allocation rule, generates an expansion disk space in memory disk;
Control desk, according to the identify label number of the virtual machine being resolved to, finds the virtual machine that will expand disk size;
Control desk is according to the attribute modification of described expansion disk space and preserve the configuration information of described virtual machine, and the expansion disk space of described memory disk is distributed to virtual machine disk.
2. virtual machine according to claim 1 is expanded the method for disk size online, it is characterized in that, the information that described control desk obtains virtual machine extension disk size comprises:
Control desk detects the disk size utilization rate of each virtual machine;
When the utilization rate that the disk space capacity of virtual machine detected when control desk surpasses setting threshold, trigger the information of the expansion disk size that forms described virtual machine.
3. virtual machine according to claim 1 is expanded the method for disk size online, it is characterized in that, control desk is resolved the information of described expansion disk size, according to the expansion disk space size of described virtual machine disk application, based on default allocation rule, in memory disk, generate an expansion disk space and comprise:
Control desk is resolved the information of described expansion disk size, obtains the identify label number of described virtual machine and the expansion disk space of virtual machine disk application size;
Control desk judges whether the disk size after described virtual machine disk expansion surpasses the rated capacity of described virtual machine disk;
When the disk size after the expansion of virtual machine disk is less than described rated capacity, the size of the residual memory space of control desk detection of stored disk;
Control desk judges whether the residual memory space of memory disk is greater than the size of the expansion disk space of virtual machine disk application;
When the residual memory space of memory disk is greater than expansion disk space big or small of virtual machine disk application, control desk is controlled described memory disk and is generated a big or small identical expansion disk space of the expansion disk size of applying for virtual machine disk.
4. virtual machine according to claim 1 is expanded the method for disk size online, it is characterized in that, described memory disk comprises any one in memory device, hard disk or disk array.
5. a virtual system control desk, is characterized in that, comprising:
Acquiring unit, for obtaining the information of virtual machine extension disk size, the information of described expansion disk size comprises the size of the identify label number of virtual machine and the expansion disk space of virtual machine disk application;
Resolution unit for resolving the information of described expansion disk size, according to the expansion disk space size of described virtual machine disk application, generates an expansion disk space based on default allocation rule in memory disk;
Search unit, for according to the identify label number of the virtual machine being resolved to, find the virtual machine that will expand disk size;
Revise dispensing unit, for according to the attribute modification of described expansion disk space and preserve the configuration information of described virtual machine, the expansion disk space of described memory disk is distributed to virtual machine disk.
6. virtual system control desk according to claim 5, is characterized in that, described acquiring unit comprises:
The first detection sub-unit, for detection of the utilization rate of the disk size of each virtual machine;
Trigger subelement, for when the utilization rate of the disk space capacity of virtual machine being detected and surpass setting threshold, trigger the information of the expansion disk size of the described virtual machine of formation.
7. virtual system control desk according to claim 5, is characterized in that, described resolution unit comprises:
Resolve subelement, for resolving the information of described expansion disk size, obtain the identify label number of described virtual machine and the expansion disk space of virtual machine disk application size;
The first judgment sub-unit, for judging whether the disk size after described virtual machine disk expansion surpasses the rated capacity of described virtual machine disk;
The second detection sub-unit, while being less than described rated capacity for the disk size after the expansion of virtual machine disk, the size of the residual memory space of detection of stored disk;
The second judgment sub-unit, for judging whether the residual memory space of memory disk is greater than the size of the expansion disk space of virtual machine disk application;
Disk space generates subelement, when being greater than expansion disk space big or small of virtual machine disk application when the residual memory space of memory disk, controlling described memory disk and generate a big or small identical expansion disk space of the expansion disk size of applying for virtual machine disk.
8. virtual system control desk according to claim 5, is characterized in that, described memory disk comprises any one in memory device, hard disk or disk array.
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