WO2021098267A1 - Procédé, système et dispositif de traitement de disque magnétique, et support de stockage lisible - Google Patents

Procédé, système et dispositif de traitement de disque magnétique, et support de stockage lisible Download PDF

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Publication number
WO2021098267A1
WO2021098267A1 PCT/CN2020/104004 CN2020104004W WO2021098267A1 WO 2021098267 A1 WO2021098267 A1 WO 2021098267A1 CN 2020104004 W CN2020104004 W CN 2020104004W WO 2021098267 A1 WO2021098267 A1 WO 2021098267A1
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Prior art keywords
disk
virtual machine
target
processing
space
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PCT/CN2020/104004
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English (en)
Chinese (zh)
Inventor
李宏伟
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苏州浪潮智能科技有限公司
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Publication of WO2021098267A1 publication Critical patent/WO2021098267A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/061—Improving I/O performance
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/0614—Improving the reliability of storage systems
    • 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
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0629—Configuration or reconfiguration of storage systems
    • G06F3/0635—Configuration or reconfiguration of storage systems by changing the path, e.g. traffic rerouting, path reconfiguration
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
    • G06F3/0671—In-line storage system
    • G06F3/0683—Plurality of storage devices
    • G06F3/0689—Disk arrays, e.g. RAID, JBOD
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
    • G06F9/45533—Hypervisors; Virtual machine monitors
    • G06F9/45558—Hypervisor-specific management and integration aspects

Definitions

  • This application relates to the field of disk processing, and in particular to a method, system, device, and readable storage medium for disk processing.
  • High Available (HA) virtual machines can quickly switch the virtual machine to another host and keep the business running after the host where the user virtual machine is located fails. Minimize the interruption time.
  • the commonly used virtual machine HA solution is to store the virtual disks of the virtual machines in the shared storage pool in the form of files.
  • the virtualization management software quickly selects a host in the cluster corresponding to the shared storage pool lock. And pull up all the problematic virtual machines on it.
  • the shared storage pool is a container that can store virtual machine disk image files and configuration files, so that all hosts can share access and start virtual machines.
  • the bottom layer of the shared storage pool is generally implemented by a cluster file system or NFS. Its advantage is that it can store heterogeneous virtual machine data, is easy to use, and can ensure the consistency of virtual machine files at the file system level; but its disadvantages are also obvious.
  • the introduction of the file system abstraction layer allows the IO of the virtual machine to pass through the file system layer before it can fall into the underlying block device, which inevitably brings performance loss, which is unacceptable for application scenarios with heavy IO load.
  • the purpose of this application is to provide a method, system, device, and readable storage medium for disk processing, which are used to improve the IO performance of a virtual machine while improving the reliability of the system.
  • this application provides a method for disk processing, which includes:
  • the target disk is processed as a raw device disk
  • the data space is mapped to the imaging device, and an access path is generated for the imaging device, so that the virtual machine can access the imaging device through the access path.
  • the processing the target disk as a raw device disk includes:
  • the target disk is formatted, and a preset magic number is added to the header of the target disk to obtain the raw disk device.
  • the disk processing command when the disk processing command is a disk delete command, it further includes:
  • the imaging device and access path corresponding to the disk to be deleted are deleted.
  • This application also provides a disk processing system, which includes:
  • a processing module which is used to process the target disk as a raw device disk when the disk processing command is a disk add command
  • the dividing module is used to divide the storage space of the bare device disk into a hidden space and a data space; wherein the hidden space is used to store virtual machine configuration data;
  • the mapping module is configured to map the data space into an imaging device and generate an access path for the imaging device, so that the virtual machine can access the imaging device through the access path.
  • it also includes:
  • the pull-up module is used to pull up all the faulty virtual machines on the faulty host when a faulty host is detected;
  • the first determining module is configured to determine the target hidden space corresponding to the faulty virtual machine, and obtain virtual machine configuration data in the target hidden space;
  • the startup module is used to select a host in the cluster corresponding to the shared storage pool as the target host, and start the corresponding failed virtual machine on the target host according to the virtual machine configuration data.
  • the processing module includes:
  • the processing sub-module is used to format the target disk and add a preset magic number to the header of the target disk to obtain the raw disk device.
  • it also includes:
  • the second determining module is configured to determine the disk to be deleted according to the disk delete command when the disk processing command is a disk delete command;
  • the deleting module is used to delete the imaging device and the access path corresponding to the disk to be deleted.
  • This application also provides a disk processing device, which includes:
  • Memory used to store computer programs
  • the processor is used to implement the steps of any one of the above-mentioned disk processing methods when the computer program is executed.
  • the present application also provides a readable storage medium having a computer program stored on the readable storage medium, and when the computer program is executed by a processor, the steps of the disk processing method described in any one of the above are implemented.
  • the method for disk processing includes: obtaining a disk processing command; when the disk processing command is a disk adding command, processing the target disk as a raw device disk; dividing the storage space of the raw device disk into hidden space and data space; Among them, the hidden space is used to save the virtual machine configuration data; the data space is mapped to the imaging device, and an access path is generated for the imaging device, so that the virtual machine can access the imaging device through the access path.
  • the technical solution provided by this application treats the target disk as a raw device disk, and then divides the storage space of the raw device disk into hidden space and data space, so that the bare device disk can store virtual machine configuration data, thereby supporting virtual The high availability of the machine; at the same time, by mapping the data space to the imaging device and generating an access path for the imaging device, the virtual machine can access the imaging device through the access path, which improves the IO performance of the virtual machine while improving the system’s performance reliability.
  • This application also provides a disk processing system, device and readable storage medium, which have the above-mentioned beneficial effects, and will not be repeated here.
  • FIG. 1 is a flowchart of a method for disk processing provided by an embodiment of the application
  • FIG. 2 is a flowchart of another method for processing a disk provided by an embodiment of the application
  • FIG. 3 is a structural diagram of a disk processing system provided by an embodiment of the application.
  • FIG. 4 is a structural diagram of another disk processing system provided by an embodiment of the application.
  • FIG. 5 is a structural diagram of a disk processing device provided by an embodiment of the application.
  • the core of this application is to provide a method, system, device, and readable storage medium for disk processing, which are used to improve the IO performance of the virtual machine while enhancing the reliability of the system.
  • FIG. 1 is a flowchart of a disk processing method provided by an embodiment of the application.
  • disk processing commands mentioned here may include, but are not limited to, disk add commands, disk delete commands, or disk change commands, among which:
  • the disk processing command is a disk delete command
  • the disk to be changed can also be determined according to the disk change command, and the disk to be changed can be changed to an imaging device. Specifically, the following steps can be performed:
  • the storage space of the disk to be changed is divided into hidden space and data space, and the data space is mapped to the imaging device, and an access path is generated for the imaging device, so that the virtual machine can access the imaging device through the access path, so that the user needs to access the imaging device through the access path.
  • a new udev rule can be added to the host to obtain disk processing commands, so that the host can perceive the addition, change, and deletion of disk devices, and call the rawdisk_manager tool to perform processing on the original disk. To process.
  • the target disk mentioned here is the disk newly added to the system, and the target disk needs to be processed as an imaging device that the virtual machine can access;
  • Raw device also known as raw partition (raw partition)
  • raw partition is a special block device file that is not read by Unix through the file system.
  • the application is responsible for reading and writing operations on it, without going through the file system.
  • Buffer it is a device that is not directly managed by the operating system. This kind of device lacks the operating system layer and has higher I/O efficiency.
  • the raw device disk mentioned here is the disk that is not read by Unix through the file system;
  • the target disk is treated as a raw device disk, which can be specifically:
  • the hidden space mentioned here is used to store virtual machine configuration data. Based on the fact that existing raw device disks cannot store metadata such as virtual machine configuration files, this application creatively divides the storage space of the bare device disk into hidden space and data space. And save the virtual machine configuration data in the hidden space, so that the raw device disk supports the high availability of the virtual machine.
  • S104 Map the data space to the imaging device, and generate an access path for the imaging device, so that the virtual machine can access the imaging device through the access path.
  • the raw device disk can be divided into two parts, the front 32M space and the remaining space; the /dev/disk/by-id/rawdisk- ⁇ scsi id> path is generated for the remaining space for virtual machine access , And the first 32M space is a hidden space, used to retain metadata such as virtual machine configuration data.
  • a disk processing method provided by this application is to process the target disk as a raw device disk, and then divide the storage space of the raw device disk into hidden space and data space, so that the raw device disk can store
  • the virtual machine configuration data can support the high availability of the virtual machine.
  • the virtual machine can access the imaging device through the access path, which improves the virtual
  • the machine IO performance improves the reliability of the system at the same time.
  • the present application also provides another method for disk processing, which is described below with reference to FIG. 2.
  • FIG. 2 is a flowchart of another disk processing method provided by an embodiment of the application.
  • S202 Determine the target hidden space corresponding to the faulty virtual machine, and obtain virtual machine configuration data in the target hidden space;
  • S203 Select a host in the cluster corresponding to the shared storage pool as the target host, and start the corresponding failed virtual machine on the target host according to the virtual machine configuration data.
  • the embodiment of the present application pulls up all faulty virtual machines on the faulty host, then determines the target hidden space corresponding to the faulty virtual machine, and obtains the virtual machine in the target hidden space Configure the data, and finally select a host in the cluster corresponding to the shared storage pool as the target host, and start the corresponding failed virtual machine on the target host according to the virtual machine configuration data, thereby realizing the high availability of the virtual machine.
  • FIG. 3 is a structural diagram of a disk processing system provided by an embodiment of the application.
  • the system can include:
  • the obtaining module 100 is used to obtain disk processing commands
  • the processing module 200 is used to process the target disk as a raw device disk when the disk processing command is a disk add command;
  • the dividing module 300 is used to divide the storage space of the bare device disk into a hidden space and a data space; among them, the hidden space is used to store virtual machine configuration data;
  • the mapping module 400 is used to map the data space to the imaging device and generate an access path for the imaging device, so that the virtual machine can access the imaging device through the access path.
  • FIG. 4 is a structural diagram of another disk processing system provided by an embodiment of the application.
  • the system can also include:
  • the pull-up module is used to pull up all the faulty virtual machines on the faulty host when a faulty host is detected;
  • the first determining module is used to determine the target hidden space corresponding to the faulty virtual machine, and obtain virtual machine configuration data in the target hidden space;
  • the startup module is used to select a host in the cluster corresponding to the shared storage pool as the target host, and start the corresponding failed virtual machine on the target host according to the virtual machine configuration data.
  • the processing module 200 may include:
  • the processing sub-module is used to format the target disk and add a preset magic number to the head of the target disk to obtain a raw disk device.
  • the system can also include:
  • the second determining module is used to determine the disk to be deleted according to the disk delete command
  • the delete module is used to delete the imaging device and access path corresponding to the disk to be deleted.
  • the acquisition module acquires the disk processing command; when the disk processing command is a disk add command, the processing module processes the target disk as a raw device disk; the dividing module divides the storage space of the raw device disk into hidden space and data space; the mapping module divides the data space Map as an imaging device, and generate an access path for the imaging device, so that the virtual machine can access the imaging device through the access path.
  • the pull-up module pulls up all the faulty virtual machines on the faulty host; the first determination module determines the target hidden space corresponding to the faulty virtual machine, and obtains the virtual machine configuration data in the target hidden space; start The module selects a host in the cluster corresponding to the shared storage pool as the target host, and starts the corresponding failed virtual machine on the target host according to the virtual machine configuration data.
  • the second determination module determines the disk to be deleted according to the disk delete command; the delete module deletes the imaging device and the access path corresponding to the disk to be deleted.
  • FIG. 5 is a structural diagram of a disk processing device provided by an embodiment of the application.
  • the disk processing device 500 may have relatively large differences due to different configurations or performances, and may include one or more processors (central processing units, CPU) 522 (for example, one or more processors) and a memory 532, one or more More than one storage medium 530 for storing application programs 542 or data 544 (for example, one or one storage device with a large amount of storage).
  • the memory 532 and the storage medium 530 may be short-term storage or persistent storage.
  • the program stored in the storage medium 530 may include one or more modules (not shown in the figure), and each module may include a series of instruction operations on the device.
  • 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 and output interfaces 558, and/or one or more operating systems 541, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.
  • the steps in the disk processing method described in FIGS. 1 to 2 are implemented by the disk processing device based on the structure shown in FIG. 5.
  • the disclosed devices, equipment, and methods can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of modules is only a logical function division, and there may be other divisions in actual implementation, for example, multiple modules or components can be combined or integrated To another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or modules, and may be in electrical, mechanical or other forms.
  • the modules described as separate components may or may not be physically separate, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules can be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software function modules.
  • the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including several instructions to make a computer device (which can be a personal computer, a function calling device, or a network device, etc.) execute all or part of the steps of the methods in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

Abstract

La présente invention concerne un procédé, un système et un dispositif de traitement de disque magnétique, et un support de stockage lisible, le procédé consistant à : acquérir une commande de traitement de disque magnétique ; quand la commande de traitement de disque magnétique est une commande d'ajout de disque magnétique, traiter un disque magnétique cible comme un disque magnétique périphérique brut ; diviser l'espace de stockage du disque magnétique périphérique brut en un espace caché et un espace de données ; mapper l'espace de données à un dispositif image, et générer un chemin d'accès pour le dispositif image, de telle sorte qu'une machine virtuelle accède au dispositif image au moyen du chemin d'accès. La présente invention permet au disque magnétique périphérique brut de stocker des données de configuration de machine virtuelle, et ainsi de prendre en charge la grande disponibilité de la machine virtuelle ; en outre, au moyen du mappage de l'espace de données à un dispositif image et de la génération d'un chemin d'accès pour le dispositif image, de telle sorte que la machine virtuelle puisse accéder au dispositif image au moyen du chemin d'accès, la fiabilité du système est augmentée tandis que les performances d'entrée/sortie de la machine virtuelle sont améliorées.
PCT/CN2020/104004 2019-11-22 2020-07-24 Procédé, système et dispositif de traitement de disque magnétique, et support de stockage lisible WO2021098267A1 (fr)

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