CN112269542B - NVME hard disk storage space distribution method, device and storage medium - Google Patents

NVME hard disk storage space distribution method, device and storage medium Download PDF

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Publication number
CN112269542B
CN112269542B CN202011119319.8A CN202011119319A CN112269542B CN 112269542 B CN112269542 B CN 112269542B CN 202011119319 A CN202011119319 A CN 202011119319A CN 112269542 B CN112269542 B CN 112269542B
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main controller
state
hard disk
controller
storage
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CN112269542A (en
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付水论
程世超
王鹏
张敏
杨德晓
叶明洋
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Suzhou Inspur Intelligent Technology Co Ltd
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Suzhou Inspur Intelligent Technology Co Ltd
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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
    • G06F3/0604—Improving or facilitating administration, e.g. storage management
    • 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
    • G06F3/0608—Saving storage space on 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
    • G06F3/0602—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
    • G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
    • G06F3/067—Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

The invention provides a method, a device and a storage medium for allocating storage space of an NVME (network video ME) hard disk, belongs to the technical field of server storage, and solves the technical problem that the NVME hard disk can only be used by one host in the prior art. The method comprises the steps of obtaining a storage space request instruction; inquiring the state of a main controller; allocating resources to the NVM subsystem according to the state of the main controller; records are generated for the NVM subsystem responding to read and write requests.

Description

NVME hard disk storage space distribution method, device and storage medium
Technical Field
The invention relates to the technical field of NVME hard disk storage, in particular to a method, a device and a storage medium for allocating NVME hard disk storage space.
Background
Virtualization is a technology that provides an access method superior to the original resource configuration by combining or partitioning existing computer resources (CPU, memory, disk space, etc.) so that these resources behave as one or more operating environments. Virtualization is the transformation of physical resources into logically manageable resources to break the barrier between physical structures. Virtualization environments require a coordinated coordination of multiple technologies: virtualization of servers and operating systems, storage virtualization, and system management, resource management, and software delivery, application environments consistent with non-virtualized environments.
The NVME hard disk has a PCIe-based standard interface, has the advantages of low latency, low energy consumption, no noise, and high read-write performance, and is becoming increasingly popular with the increase of application scenarios with high requirements on the read-write performance of the hard disk, such as big data, artificial intelligence, and the like. How to virtualize NVME hard disk storage is an important issue for server designers.
In the prior art, the NVME hard disk is not virtualized, which causes that the NVME hard disk can only be used by one host at the same time, and simultaneously, the NVME hard disk storage resources cannot be dynamically allocated among different hosts.
Disclosure of Invention
The invention aims to provide a method, a device and a storage medium for allocating storage space of an NVME (network video ME) hard disk, which solve the technical problem that the same NVME hard disk can only be used by one host at the same time in the prior art.
In a first aspect, the present invention provides a method for allocating NVME hard disk storage space, including:
acquiring a storage space request instruction;
inquiring the state of the main controller;
allocating resources to the NVM subsystem according to the state of the main controller;
records are generated for the NVM subsystem responding to read and write requirements.
Further, the master controller state includes:
in the Offline state, the host does not use the main controller, and the storage resources can be allocated;
in an Online state, the main controller is being used by the host, and the storage resources are completely allocated;
busy state, the primary controller receives the storage resource request command from the host and is configuring the flexible storage resources of the secondary controller.
Further, the step of allocating resources to the NVM subsystem according to the state of the master controller specifically includes:
and if the main controller is in the offline state, the main controller responds by using the private storage resource or configures the flexible storage resource.
Further, the step of allocating resources to the NVM subsystem according to the status of the main controller further comprises:
if the main controller is in the busy state, the state of the main controller is inquired again after the preset time is passed until the main controller is in offline.
Further, the step of allocating resources to the NVM subsystem according to the status of the main controller further comprises:
if the main controller is in an online state and the size of the data to be stored exceeds a preset value, the main controller splits the data operation to be stored into a plurality of data read-write operations, selects a secondary controller for the plurality of data read-write operations, and allocates flexible storage resources for the secondary controller;
if the main controller is in the online state and the size of the data to be stored does not exceed the preset value, the operation of the data to be stored continues to wait until the main controller is in offline.
Further, the step of generating a record for the NVM subsystem responding to the read-write requirement specifically includes:
generating a storage subsystem ID lookup table;
and recording the NVM subsystem ID and the NVM hard disk drive information in the storage subsystem ID lookup table.
In a second aspect, the present invention further provides an NVME hard disk storage space allocation apparatus, including:
the acquisition module is used for acquiring a storage space request instruction;
the query module is used for querying the state of the main controller;
the allocation module is used for allocating resources to the NVM subsystem according to the state of the main controller;
and the recording module is used for recording the NVM subsystem responding to the read-write requirement.
In a third aspect, the present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores machine-executable instructions, which, when invoked and executed by a processor, cause the processor to perform the method described above.
According to the NVME hard disk storage space allocation method provided by the invention, the reading and writing instruction requirements of a plurality of hosts can be met by acquiring the instruction, inquiring the main control state, allocating resources according to the main controller state and recording the NVM subsystem responding to the requirements, so that the space is dynamically allocated among different hosts, the use efficiency of storage resources is improved, and the waste caused by over-allocation of NVME hard disks is avoided.
Accordingly, the NVME hard disk storage space allocation method and the computer-readable storage medium provided by the embodiments of the present invention also have the above technical effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a method for allocating storage space of an NVME hard disk according to an embodiment of the present invention;
fig. 2 is a detailed flowchart of NVME hard disk storage space allocation according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an NVME hard disk storage space allocation apparatus according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The terms "comprising" and "having," and any variations thereof, as referred to in embodiments of the present invention, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the invention provides a method for allocating NVME hard disk storage space, which comprises the following steps:
acquiring a storage space request instruction;
inquiring the state of the main controller;
allocating resources to the NVM subsystem according to the state of the main controller;
records are generated for the NVM subsystem responding to read and write requirements.
In one possible implementation, the master controller state includes:
in the Offline state, the host does not use the main controller, and the storage resources can be allocated;
in an Online state, the main controller is being used by the host, and the storage resources are completely allocated;
busy state, the primary controller receives the storage resource request command from the host and is configuring the flexible storage resources of the secondary controller.
For different states of the main controller, the data read-write request modes of subsequent processing are different, and the request is convenient to manage.
In a possible embodiment, the step of allocating resources to the NVM subsystem according to the status of the host controller specifically includes:
and if the main controller is in the offline state, the main controller responds by using the private storage resource or configures the flexible storage resource.
When the main controller is in offline, no host (host) uses the main controller, and at the moment, the main controller can meet the request of any host, when the private resources of the main controller can meet the requirements, the private resources are used to meet the requirements, otherwise, the flexible storage resources are used to meet the requirements.
In one possible embodiment, the step of allocating resources to the NVM subsystem according to the status of the host controller further comprises:
if the main controller is in the busy state, the state of the main controller is inquired again after the preset time till the main controller is in offline.
At the moment, the main controller is occupied by the host, the data read-write requests of other hosts cannot be met, and the requests can continue to wait until the main controller is in the offline state, and then the requests are responded.
In one possible embodiment, the step of allocating resources to the NVM subsystem according to the master controller status further comprises:
if the main controller is in an online state and the size of the data to be stored exceeds a preset value, the main controller divides the data operation to be stored into a plurality of data read-write operations, selects a secondary controller for the plurality of data read-write operations, and allocates flexible storage resources for the secondary controller;
and if the main controller is in an online state and the size of the data to be stored does not exceed the preset value, continuing to wait until the main controller is in offline.
If the main controller is in the online state and the request needing to be responded exceeds the preset value, the waiting time is possibly too long, and in order to avoid that the main controller is in the online state for a long time, the main controller splits the data to be stored and then delivers the split data to the secondary controller to meet the requirement, so that the waiting time is avoided.
In a possible embodiment, the step of generating a record for the NVM subsystem responding to the read-write requirement specifically includes:
generating a storage subsystem ID lookup table;
and recording the NVM subsystem ID and the NVM hard disk drive information in the storage subsystem ID lookup table.
By recording the ID, the driving information and the established lookup table, subsequent searching is facilitated.
According to the NVME hard disk storage space distribution method provided by the invention, the reading and writing instruction requirements of a plurality of host can be met by acquiring the instruction, inquiring the main control state, distributing the resources according to the main controller state and recording the NVM subsystem responding to the requirements, so that the space is dynamically distributed among different hosts, the use efficiency of the storage resources is improved, and the waste caused by over-configuration of the NVME hard disk is avoided.
An embodiment of the present invention further provides an NVME hard disk storage space allocation apparatus, including:
the acquisition module is used for acquiring a storage space request instruction;
the query module is used for querying the state of the main controller;
the allocation module is used for allocating resources to the NVM subsystem according to the state of the main controller;
and the recording module is used for recording the NVM subsystem responding to the read-write requirement.
The NVME hard disk storage space allocation method provided by the embodiment of the present invention is implemented as follows:
the NVM subsystem is used as the minimum calling module for NVME storage resources. The NVM subsystem is composed of a controller, an NVM subsystem ID and a nonvolatile storage medium.
The NVM subsystem comprises at least two controllers, wherein one controller is a main controller, and the other controllers are secondary controllers. The secondary controller needs the master controller to respond to the Host storage resource request after allocating flexible storage resources for the secondary controller.
The storage resources are divided into private storage resources and flexible storage resources. Private storage resources are permanently allocated to the host controller. Flexible storage resources may be dynamically allocated to either the primary controller or the secondary controller.
The state of the main controller is divided into an online state, an offline state and a busy state, when the main controller is in the online state, the main controller is being used by the Host, and the allocation of the storage resources is completed. When the host is in the Offline state, the host does not use the main controller, and the storage resource can be allocated. And when the system is in the busy state, the main controller receives a storage resource request instruction of the Host and configures flexible storage resources of the secondary controller.
The states of the secondary controller are divided into Online and Offline. In the online state, the secondary controller is being used by the Host, and the storage resource allocation is completed. When the host is in the Offline state, the host does not use the secondary controller, and the storage resource allocation can be performed.
When the primary controller or the secondary controller is converted from the online state to the offline state, the associated flexible storage resource is removed.
When the main controller receives a host storage space request instruction, the NVME hard disk drive inquires the current state of the main controller, if the main controller is in an offline state, the main controller preferentially uses the private storage resource to respond, and if the private storage resource of the main controller is completely used, the main controller configures the flexible storage resource to respond;
if the main controller is in the busy state, the NVME hard disk drive queries the state of the main controller again after the preset time (the preset time in the patent is 5 ms), and the main controller is used for corresponding operation until the main controller is in offline;
if the main controller is in an online state and the size of the data read-write operation of the received storage space request instruction is more than 40k, the main controller divides the data read-write operation into a plurality of data read-write operations within 10k, selects a secondary controller, allocates flexible storage resources for the secondary controller, and uses the secondary controller to perform corresponding operations;
if the main controller is in an online state and the size of the read-write operation of the received storage space request instruction data is within 40k, the main controller continues to wait until the main controller is in an offline state.
After responding to the data read-write operation, an NVM subsystem ID, an NVME hard disk drive record and a lookup table for storing the subsystem ID are allocated to each NVM subsystem responding to the read-write request.
In accordance with the above method, embodiments of the present invention also provide a computer readable storage medium storing machine executable instructions, which when invoked and executed by a processor, cause the processor to perform the steps of the above method.
The apparatus provided in the embodiment of the present invention may be specific hardware on the device, or software or firmware installed on the device, or the like. The device provided by the embodiment of the present invention has the same implementation principle and technical effect as the method embodiments, and for the sake of brief description, reference may be made to the corresponding contents in the method embodiments without reference to the device embodiments. It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the foregoing systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
For another example, the division of the unit is only one division of logical functions, and there may be other divisions in actual implementation, and for another example, multiple units 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 of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments provided by the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of 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 server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. 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.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; and the modifications, changes or substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention. Are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. A NVME hard disk storage space allocation method is characterized by comprising an NVM subsystem, wherein the NVM subsystem comprises at least two controllers, one of the controllers is a main controller, the other controllers are secondary controllers, and the secondary controllers respond to a Host storage resource request after needing the main controller to allocate flexible storage resources for the secondary controllers, and the method comprises the following steps:
acquiring a storage space request instruction;
inquiring the state of the main controller;
allocating resources to the NVM subsystem according to the state of the main controller;
records are generated for the NVM subsystem responding to read and write requests.
2. The NVME hard disk storage space allocation method according to claim 1, wherein the master controller state includes:
in the Offline state, the host does not use the main controller, and the storage resources can be allocated;
in an Online state, the main controller is being used by the host, and the storage resources are completely allocated;
busy state, the primary controller receives the storage resource request command of the host and is configuring the flexible storage resource of the secondary controller.
3. The method for allocating the storage space of the NVME hard disk according to claim 2, wherein the step of allocating resources to the NVM subsystem according to the state of the master controller specifically includes:
and if the main controller is in the offline state, the main controller responds by using the private storage resource or configures the flexible storage resource.
4. The method of allocating NVME hard disk storage space of claim 3, wherein the step of allocating resources to the NVM subsystem according to the state of the host controller further comprises:
if the main controller is in the busy state, the state of the main controller is inquired again after the preset time till the main controller is in offline.
5. The NVME hard disk storage space allocation method of claim 3, wherein the step of allocating resources to the NVM subsystem according to the host controller status further comprises:
if the main controller is in an online state and the size of the data to be stored exceeds a preset value, the main controller splits the data operation to be stored into a plurality of data read-write operations, selects a secondary controller for the plurality of data read-write operations, and allocates flexible storage resources for the secondary controller;
and if the main controller is in an online state and the size of the data to be stored does not exceed the preset value, continuing to wait until the main controller is in offline.
6. The method for allocating the storage space of the NVME hard disk according to claim 1, wherein the step of generating the record for the NVM subsystem responding to the read-write requirement specifically includes:
generating a storage subsystem ID lookup table;
and recording the NVM subsystem ID and the NVM hard disk drive information in the storage subsystem ID lookup table.
7. An NVME hard disk storage space allocation device, comprising an NVM subsystem, wherein the NVM subsystem comprises at least two controllers, one of which is a main controller and the others are secondary controllers, the secondary controllers need the main controller to allocate flexible storage resources for the secondary controllers and then respond to a Host storage resource request, the device comprising:
the acquisition module is used for acquiring a storage space request instruction;
the query module is used for querying the state of the main controller;
the allocation module is used for allocating resources to the NVM subsystem according to the state of the main controller;
and the recording module is used for recording the NVM subsystem responding to the read-write requirement.
8. A computer readable storage medium having stored thereon machine executable instructions which, when invoked and executed by a processor, cause the processor to execute the method of any of claims 1 to 6.
CN202011119319.8A 2020-10-19 2020-10-19 NVME hard disk storage space distribution method, device and storage medium Active CN112269542B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103797770A (en) * 2012-12-31 2014-05-14 华为技术有限公司 Method and system for sharing storage resources
CN108304044A (en) * 2018-02-28 2018-07-20 郑州云海信息技术有限公司 A kind of setting method and system of NVME hard disk hot-plugs
CN110795206A (en) * 2018-08-02 2020-02-14 阿里巴巴集团控股有限公司 System and method for facilitating cluster-level caching and memory space
CN111143243A (en) * 2019-12-19 2020-05-12 上海交通大学 Cache prefetching method and system based on NVM (non-volatile memory) hybrid memory

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103797770A (en) * 2012-12-31 2014-05-14 华为技术有限公司 Method and system for sharing storage resources
CN108304044A (en) * 2018-02-28 2018-07-20 郑州云海信息技术有限公司 A kind of setting method and system of NVME hard disk hot-plugs
CN110795206A (en) * 2018-08-02 2020-02-14 阿里巴巴集团控股有限公司 System and method for facilitating cluster-level caching and memory space
CN111143243A (en) * 2019-12-19 2020-05-12 上海交通大学 Cache prefetching method and system based on NVM (non-volatile memory) hybrid memory

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