CN110908609B - Method, system and equipment for processing disk and readable storage medium - Google Patents
Method, system and equipment for processing disk and readable storage medium Download PDFInfo
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/061—Improving I/O performance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
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Abstract
The application discloses a method for processing a disk, which comprises the following steps: acquiring a disk processing command; when the disk processing command is a disk adding command, processing the target disk into a bare device disk; dividing a storage space of a bare device disk into a hidden space and a data space; and mapping the data space into an image device, and generating an access path for the image device so that the virtual machine accesses the image device through the access path. According to the method and the device, the bare device disk can store the configuration data of the virtual machine, so that the high availability of the virtual machine can be supported; meanwhile, the data space is mapped into the mapping equipment, and the access path is generated for the mapping equipment, so that the virtual machine can access the mapping equipment through the access path, the IO performance of the virtual machine is improved, and the reliability of the system is improved. The application also provides a system and equipment for processing the disk and a readable storage medium, and the system and the equipment have the beneficial effects.
Description
Technical Field
The present application relates to the field of disk processing, and in particular, to a method, a system, a device, and a readable storage medium for disk processing.
Background
In the field of server virtualization, in order to ensure that enterprise-level services run continuously, a High Available (HA) virtual machine can quickly switch the virtual machine to other hosts and keep the services running continuously after a host where the user virtual machine is located fails, so that the interruption time is reduced to the minimum. The common scheme of the virtual machine HA is to store the virtual disks of the virtual machines in a shared storage pool in a file form, and when one host in a cluster fails, virtualization management software quickly selects one host in the cluster corresponding to the shared storage pool lock and pulls up all the virtual machines with problems on the host. One premise here is that the shared storage pool serves as a container that can store the disk image file and configuration file of the virtual machine, so that all hosts can share access and start the virtual machine.
The shared storage pool bottom layer is generally realized by adopting a cluster file system or NFS, and has the advantages that heterogeneous virtual machine data can be stored, the shared storage pool is simple and easy to use, and the consistency of virtual machine files can be ensured at the file system level; however, the disadvantage is also obvious, because the file system abstraction layer is introduced, the IO of the virtual machine can fall into the bottom block device only through the shared file system, which inevitably brings performance loss, and is unacceptable for the application scenario with large IO load.
In order to improve the IO performance of the virtual machine, it is a common practice in the industry to remove a file system layer and directly access the bare device disk by the virtual machine. However, the bare device disk cannot store metadata such as a virtual machine configuration file, and cannot support the virtual machine HA, which improves performance but reduces system reliability.
Therefore, how to improve the IO performance of the virtual machine and improve the reliability of the system is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The application aims to provide a disk processing method, a system, equipment and a readable storage medium, which are used for improving the IO performance of a virtual machine and simultaneously improving the reliability of the system.
In order to solve the above technical problem, the present application provides a method for processing a disk, including:
acquiring a disk processing command;
when the disk processing command is a disk adding command, processing the target disk into a bare equipment disk;
dividing the storage space of the bare device disk into a hidden space and a data space; the hidden space is used for storing virtual machine configuration data;
and mapping the data space into image equipment, and generating an access path for the image equipment so that the virtual machine accesses the image equipment through the access path.
Optionally, the method further includes:
when a fault host is detected to exist, pulling up all fault virtual machines on the fault host;
determining a target hidden space corresponding to the fault virtual machine, and acquiring virtual machine configuration data in the target hidden space;
and selecting one host from the cluster corresponding to the shared storage pool as a target host, and starting a corresponding fault virtual machine on the target host according to the virtual machine configuration data.
Optionally, the processing the target disk as a bare device disk includes:
and formatting the target disk, and adding a preset magic number to the head of the target disk to obtain the bare disk device.
Optionally, when the disk processing command is a disk delete command, the method further includes:
determining a disk to be deleted according to the disk deletion command;
and deleting the mapping equipment and the access path corresponding to the disk to be deleted.
The present application further provides a system for disk processing, the system comprising:
the acquisition module is used for acquiring a disk processing command;
the processing module is used for processing the target disk into a bare equipment disk when the disk processing command is a disk adding command;
the dividing module is used for dividing the storage space of the bare equipment disk into a hidden space and a data space; the hidden space is used for storing virtual machine configuration data;
and the mapping module is used for mapping the data space into an image device and generating an access path for the image device so that the virtual machine can access the image device through the access path.
Optionally, the method further includes:
the system comprises a pull-up module, a storage module and a control module, wherein the pull-up module is used for pulling up all fault virtual machines on a fault host when the fault host is detected to exist;
the first determining module is used for determining a target hidden space corresponding to the fault virtual machine and acquiring virtual machine configuration data in the target hidden space;
and the starting module is used for selecting one host from the cluster corresponding to the shared storage pool as a target host and starting a corresponding fault virtual machine on the target host according to the virtual machine configuration data.
Optionally, the processing module includes:
and the processing submodule is used for formatting the target disk and adding a preset magic number to the head of the target disk to obtain the bare disk device.
Optionally, the method further includes:
the second determining module is used for determining a disk to be deleted according to the disk deleting command when the disk processing command is the disk deleting command;
and the deleting module is used for deleting the mapping equipment and the access path corresponding to the disk to be deleted.
The present application also provides a disk processing apparatus, including:
a memory for storing a computer program;
a processor for implementing the steps of the method of disk processing according to any one of the above when executing the computer program.
The present application also provides a readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method of disk processing according to any of the above.
The method for processing the disk comprises the following steps: acquiring a disk processing command; when the disk processing command is a disk adding command, processing the target disk into a bare device disk; dividing a storage space of a bare device disk into a hidden space and a data space; the hidden space is used for storing virtual machine configuration data; and mapping the data space into an image device, and generating an access path for the image device so that the virtual machine accesses the image device through the access path.
According to the technical scheme provided by the application, the target disk is processed into the bare device disk, and then the storage space of the bare device disk is divided into the hidden space and the data space, so that the bare device disk can store the configuration data of the virtual machine, and the high availability of the virtual machine can be supported; meanwhile, the data space is mapped into the mapping equipment, and the access path is generated for the mapping equipment, so that the virtual machine can access the mapping equipment through the access path, the IO performance of the virtual machine is improved, and the reliability of the system is improved. The present application also provides a system, a device and a readable storage medium for disk processing, which have the above beneficial effects and are not described herein again.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a method for processing a disk according to an embodiment of the present application;
FIG. 2 is a flow chart of another method for processing a disk according to an embodiment of the present application;
FIG. 3 is a block diagram of a disk processing system according to an embodiment of the present application;
FIG. 4 is a block diagram of another disk processing system provided in an embodiment of the present application;
fig. 5 is a structural diagram of a magnetic disk processing device according to an embodiment of the present application.
Detailed Description
The core of the application is to provide a method, a system, a device and a readable storage medium for disk processing, which are used for improving the IO performance of a virtual machine and simultaneously improving the reliability of the system.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for processing a disk according to an embodiment of the present application.
The method specifically comprises the following steps:
s101: acquiring a disk processing command;
based on the prior art, in order to improve the IO performance of the virtual machine, the file system layer is removed, and the virtual machine directly accesses the bare device disk. However, the bare device disk cannot store metadata such as a virtual machine configuration file and cannot support the virtual machine HA, so that the performance is improved, but the reliability of the system is reduced; therefore, the present application provides a method for processing a magnetic disk, which is used for solving the above problems;
optionally, the disk processing command mentioned herein may include, but is not limited to, a disk add command, a disk delete command, or a disk change command, where:
when the disk processing command is a disk deleting command, determining a disk to be deleted according to the disk deleting command, and deleting mapping equipment and an access path corresponding to the disk to be deleted so that a user can remove a fault hard disk or an old hard disk in the system;
when the disk processing command is a disk change command, the disk to be changed may also be determined according to the disk change command, and the disk to be changed is changed to an image device, specifically, the following steps may be performed:
the storage space of the disk to be changed is divided into a hidden space and a data space, the data space is mapped into an image device, and an access path is generated for the image device, so that the virtual machine can access the image device through the access path, and a user can obtain the image device which can be accessed by the virtual machine by directly processing an original disk instead of adding a new disk in a system.
In a specific embodiment, the acquisition of the disk processing command can be realized by adding a new udev rule on the host, so that the host can sense the addition, change and deletion events of the disk device, and call a rawdisk _ manager tool to process the original disk.
S102: when the disk processing command is a disk adding command, processing the target disk into a bare device disk;
the target disk mentioned here is a disk newly added to the system, and the target disk needs to be processed into an image device that can be accessed by the virtual machine;
a bare device (raw device), also called a bare partition (original partition), is a special block device file that is not read by Unix through a file system, and is read and written by an application program without buffering of the file system, and is a device that is not directly managed by the operating system. This device has one layer of operating system less and has higher I/O efficiency, and the disk read by Unix through file system;
optionally, as mentioned herein, the processing of the target disk as a bare device disk may specifically be:
and formatting the target disk, and adding a preset magic number to the head of the target disk to obtain the bare disk device.
S103: dividing a storage space of a bare device disk into a hidden space and a data space;
the hidden space mentioned here is used for storing virtual machine configuration data, and based on the fact that the existing bare device disk cannot store metadata such as a virtual machine configuration file, the storage space of the bare device disk is creatively divided into the hidden space and a data space, and the virtual machine configuration data is stored in the hidden space, so that the bare device disk supports high availability of a virtual machine.
S104: and mapping the data space into an image device, and generating an access path for the image device so that the virtual machine accesses the image device through the access path.
In one embodiment, a bare device disk may be divided into two parts, a front 32M space and a remainder space; and generating/dev/disk/by-id/rawdisk- < scsi id > paths for the rest space to be accessed by the virtual machine, wherein the front 32M space is a hidden space and is used for reserving metadata such as virtual machine configuration data.
Based on the technical scheme, according to the disk processing method provided by the application, the target disk is processed into the bare device disk, and then the storage space of the bare device disk is divided into the hidden space and the data space, so that the bare device disk can store the configuration data of the virtual machine, and the high availability of the virtual machine can be supported; meanwhile, the data space is mapped into the mapping equipment, and the access path is generated for the mapping equipment, so that the virtual machine can access the mapping equipment through the access path, the IO performance of the virtual machine is improved, and the reliability of the system is improved.
Based on the above embodiments, the present application further provides another method for processing a disk, which is described below with reference to fig. 2.
Referring to fig. 2, fig. 2 is a flowchart of another disk processing method according to an embodiment of the present application.
The method specifically comprises the following steps:
s201: when a fault host is detected to exist, pulling up all fault virtual machines on the fault host;
s202: determining a target hidden space corresponding to a fault virtual machine, and acquiring virtual machine configuration data in the target hidden space;
s203: and selecting one host from the cluster corresponding to the shared storage pool as a target host, and starting a corresponding fault virtual machine on the target host according to the virtual machine configuration data.
Based on the technical scheme, when a fault host is detected, the embodiment of the application pulls up all fault virtual machines on the fault host, then determines a target hidden space corresponding to the fault virtual machine, acquires virtual machine configuration data in the target hidden space, finally selects one host from a cluster corresponding to a shared storage pool as the target host, and starts the corresponding fault virtual machine on the target host according to the virtual machine configuration data, so that high availability of the virtual machine is realized.
Referring to fig. 3, fig. 3 is a block diagram of a system for disk processing according to an embodiment of the present application.
The system may include:
an obtaining module 100, configured to obtain a disk processing command;
the processing module 200 is configured to process the target disk as a bare device disk when the disk processing command is a disk add command;
a dividing module 300, configured to divide a storage space of a bare device disk into a hidden space and a data space; the hidden space is used for storing virtual machine configuration data;
the mapping module 400 is configured to map the data space into an image device, and generate an access path for the image device, so that the virtual machine accesses the image device through the access path.
Referring to fig. 4, fig. 4 is a block diagram of another disk processing system according to an embodiment of the present application.
The system may further comprise:
the pull-up module is used for pulling up all the fault virtual machines on the fault host when the fault host is detected to exist;
the first determining module is used for determining a target hidden space corresponding to the fault virtual machine and acquiring virtual machine configuration data in the target hidden space;
and the starting module is used for selecting one host from the cluster corresponding to the shared storage pool as a target host and starting a corresponding fault virtual machine on the target host according to the virtual machine configuration data.
The processing module 200 may include:
and the processing submodule is used for formatting the target disk and adding a preset magic number to the head of the target disk to obtain the bare disk device.
The system may further comprise:
the second determining module is used for determining the disk to be deleted according to the disk deleting command;
and the deleting module is used for deleting the mapping equipment and the access path corresponding to the disk to be deleted.
The various components of the above system may be practically applied in the following embodiments:
the acquisition module acquires a disk processing command; when the disk processing command is a disk adding command, the processing module processes the target disk into a bare device disk; the dividing module divides the storage space of the bare equipment disk into a hidden space and a data space; the mapping module maps the data space into the image equipment and generates an access path for the image equipment, so that the virtual machine accesses the image equipment through the access path.
When a fault host is detected, the pull-up module pulls up all fault virtual machines on the fault host; the method comprises the steps that a first determining module determines a target hidden space corresponding to a fault virtual machine and obtains virtual machine configuration data in the target hidden space; the starting module selects one host from the cluster corresponding to the shared storage pool as a target host, and starts a corresponding fault virtual machine on the target host according to the virtual machine configuration data.
When the disk processing command is a disk deleting command, the second determining module determines a disk to be deleted according to the disk deleting command; and the deleting module deletes the mapping equipment and the access path corresponding to the disk to be deleted.
Referring to fig. 5, fig. 5 is a structural diagram of a disk processing device according to an embodiment of the present application.
The disk processing device 500 may vary widely in configuration or performance and may include one or more processors (CPUs) 522 (e.g., one or more processors) and memory 532, one or more storage media 530 (e.g., one or more mass storage devices) storing applications 542 or data 544. Memory 532 and storage media 530 may be, among other things, transient storage or persistent storage. The program stored on the storage medium 530 may include one or more modules (not shown), each of which may include a sequence of instruction operations for the device. Further, the processor 522 may be configured to communicate with the storage medium 530, and execute a series of instruction operations in the storage medium 530 on the disk processing device 500.
The disk processing device 500 may also include one or more power supplies 525, one or more wired or wireless network interfaces 550, one or more input-output interfaces 558, and/or one or more operating systems 541, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.
The steps in the method of disk processing described in fig. 1 to 2 above are implemented by the disk processing device based on the structure shown in fig. 5.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the module described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus, device and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules is merely a division of logical functions, and an actual implementation may have another division, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
Modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a function calling device, or a network device) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The method, system, device and readable storage medium for processing a disk provided by the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (8)
1. A method of disk processing, comprising:
acquiring a disk processing command;
when the disk processing command is a disk adding command, processing the target disk into a bare equipment disk;
dividing the storage space of the bare device disk into a hidden space and a data space; the hidden space is used for storing virtual machine configuration data;
mapping the data space into image equipment, and generating an access path for the image equipment so that a virtual machine accesses the image equipment through the access path;
when a fault host is detected to exist, pulling up all fault virtual machines on the fault host;
determining a target hidden space corresponding to the fault virtual machine, and acquiring virtual machine configuration data in the target hidden space;
and selecting one host from the cluster corresponding to the shared storage pool as a target host, and starting a corresponding fault virtual machine on the target host according to the virtual machine configuration data.
2. The method of claim 1, wherein processing the target disk as a bare device disk comprises:
and formatting the target disk, and adding a preset magic number to the head of the target disk to obtain the bare device disk.
3. The method according to claim 1, wherein when the disk processing command is a disk delete command, further comprising:
determining a disk to be deleted according to the disk deletion command;
and deleting the mapping equipment and the access path corresponding to the disk to be deleted.
4. A disk processing system, comprising:
the acquisition module is used for acquiring a disk processing command;
the processing module is used for processing the target disk into a bare equipment disk when the disk processing command is a disk adding command;
the dividing module is used for dividing the storage space of the bare equipment disk into a hidden space and a data space; the hidden space is used for storing virtual machine configuration data;
the mapping module is used for mapping the data space into image equipment and generating an access path for the image equipment so that the virtual machine can access the image equipment through the access path;
the system comprises a pull-up module, a storage module and a control module, wherein the pull-up module is used for pulling up all fault virtual machines on a fault host when the fault host is detected to exist;
the first determining module is used for determining a target hidden space corresponding to the fault virtual machine and acquiring virtual machine configuration data in the target hidden space;
and the starting module is used for selecting one host from the cluster corresponding to the shared storage pool as a target host and starting a corresponding fault virtual machine on the target host according to the virtual machine configuration data.
5. The system of claim 4, wherein the processing module comprises:
and the processing submodule is used for formatting the target disk and adding a preset magic number to the head of the target disk to obtain the bare device disk.
6. The system of claim 4, further comprising:
the second determining module is used for determining a disk to be deleted according to the disk deleting command when the disk processing command is the disk deleting command;
and the deleting module is used for deleting the mapping equipment and the access path corresponding to the disk to be deleted.
7. A disk processing apparatus, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the method of disk processing according to any of claims 1 to 3 when executing the computer program.
8. A readable storage medium, characterized in that the readable storage medium has stored thereon a computer program which, when being executed by a processor, realizes the steps of the method of disk processing according to any one of claims 1 to 3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911157820.0A CN110908609B (en) | 2019-11-22 | 2019-11-22 | Method, system and equipment for processing disk and readable storage medium |
| PCT/CN2020/104004 WO2021098267A1 (en) | 2019-11-22 | 2020-07-24 | Magnetic disk processing method, system, and device, and readable storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911157820.0A CN110908609B (en) | 2019-11-22 | 2019-11-22 | Method, system and equipment for processing disk and readable storage medium |
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| CN110908609B true CN110908609B (en) | 2021-09-17 |
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|---|---|---|---|---|
| CN110908609B (en) * | 2019-11-22 | 2021-09-17 | 苏州浪潮智能科技有限公司 | Method, system and equipment for processing disk and readable storage medium |
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