CN110515535B - Hard disk read-write control method and device, electronic equipment and storage medium - Google Patents
Hard disk read-write control method and device, electronic equipment and storage medium Download PDFInfo
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- CN110515535B CN110515535B CN201810496764.2A CN201810496764A CN110515535B CN 110515535 B CN110515535 B CN 110515535B CN 201810496764 A CN201810496764 A CN 201810496764A CN 110515535 B CN110515535 B CN 110515535B
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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
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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
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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
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0629—Configuration or reconfiguration of storage systems
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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
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0674—Disk device
- G06F3/0676—Magnetic disk device
Abstract
The embodiment of the invention provides a hard disk read-write control method, a hard disk read-write control device, electronic equipment and a storage medium, wherein the method comprises the following steps: if the operation state of the computing node for the target hard disk is a non-allowable state, obtaining the token depth of the target hard disk; judging the size relation between the token depth of the target hard disk and a depth threshold; if the token depth of the target hard disk is smaller than the depth threshold value, the operation state of the computing node aiming at the target hard disk is changed into an allowable state, and the token depth of the target hard disk is increased according to a preset depth increasing rule. In the hard disk read-write control method of the embodiment of the invention, whether the target hard disk can allow the access of the computing node is judged according to the token depth of the target hard disk, and when the token depth of the target hard disk is smaller than the depth threshold, the computing node is allowed to perform corresponding read-write operation on the target hard disk, so that a plurality of computing nodes can simultaneously access one hard disk, the working efficiency of the computing nodes can be improved, and the overall operation efficiency of a network is improved.
Description
Technical Field
The present invention relates to the field of data read-write technology, and in particular, to a hard disk read-write control method and apparatus, an electronic device, and a storage medium.
Background
A Storage Area Network (SAN) is a Storage Network in which Storage devices, connection devices, and interfaces are integrated, and takes charge of data Storage tasks. Data transfer is accomplished in a SAN via a SCSI (Small Computer System Interface). SAS (Serial Attached SCSI) is a new generation of SCSI technology, which has been used to achieve higher transmission speeds and to improve internal space by shortening connection lines, and the like.
In a related SAN network, each hard disk only allows I/O (Input/Output) operation of one computing node at the same time, but with the rise of SAS technology, the number of computing nodes in the SAN network increases greatly, each hard disk only allows IO operation of one computing node at the same time, a phenomenon of queuing and waiting of a large number of computing nodes is caused, the working efficiency of the computing nodes is seriously affected, and the overall operation efficiency of the network is low.
Disclosure of Invention
The embodiment of the invention aims to provide a hard disk read-write control method, a hard disk read-write control device, electronic equipment and a storage medium, so that the overall operation efficiency of a network is improved. The specific technical scheme is as follows:
in a first aspect, an embodiment of the present invention provides a hard disk read-write control method, where the method includes:
determining a target hard disk where data to be operated are located;
judging the operation state of the computing node requesting to operate the data to be operated aiming at the target hard disk;
if the operation state of the computing node for the target hard disk is a non-allowable state, obtaining the token depth of the target hard disk, wherein the token depth of the target hard disk is used for representing the occupied read-write resource in the target hard disk;
judging the size relation between the token depth of the target hard disk and a depth threshold value;
if the token depth of the target hard disk is smaller than the depth threshold value, changing the operation state of the computing node aiming at the target hard disk into an allowable state, and increasing the token depth of the target hard disk according to a preset depth increasing rule.
Optionally, after the determining that the computing node that requests to operate the data to be operated aims at the operating state of the target hard disk, the method further includes:
and if the operation state of the computing node for the target hard disk is an allowable state, completing the read-write operation of the data to be operated in the target hard disk through the computing node.
Optionally, the hard disk read-write control method according to the embodiment of the present invention further includes:
and when the computing node meets a preset token release rule, changing the operating state of the computing node aiming at the target hard disk into a non-allowable state, and reducing the token depth of the target hard disk according to a preset depth reduction rule.
Optionally, in the hard disk read-write control method according to the embodiment of the present invention, the step of determining whether the computing node meets the preset token release rule is as follows:
after the computing node finishes the read-write operation on the target hard disk, or when the time when the computing node aims at the operation state of the target hard disk is in the allowable state reaches a preset time threshold value, the computing node is judged to meet a preset token release rule.
Optionally, after the determining the size relationship between the token depth of the target hard disk and the depth threshold, the method further includes:
and if the token depth of the target hard disk is not less than the depth threshold, forbidding the computing node to perform read-write operation on the target hard disk.
Optionally, before the determining the size relationship between the token depth of the target hard disk and the depth threshold, the method further includes:
determining the occupied read-write resource of the target hard disk as the read-write resource to be used when the computing node performs read-write operation on the data to be operated;
and removing the read-write resources to be used from the total read-write resources of the target hard disk to obtain the depth threshold.
In a second aspect, an embodiment of the present invention provides a hard disk read-write control apparatus, where the apparatus includes:
the hard disk determining module is used for determining a target hard disk where the data to be operated are located;
the state judgment module is used for judging the operation state of the computing node which requests to operate the data to be operated aiming at the target hard disk;
the depth acquisition module is used for acquiring the token depth of the target hard disk if the operation state of the computing node for the target hard disk is a non-allowable state, wherein the token depth of the target hard disk is used for representing the occupied read-write resource in the target hard disk;
the threshold value judging module is used for judging the size relationship between the token depth of the target hard disk and the depth threshold value;
and the state calibration module is used for changing the operation state of the computing node aiming at the target hard disk into an allowable state if the token depth of the target hard disk is smaller than the depth threshold value, and increasing the token depth of the target hard disk according to a preset depth increasing rule.
Optionally, the hard disk read-write control apparatus according to the embodiment of the present invention further includes:
and the operation permission module is used for completing the read-write operation of the data to be operated in the target hard disk through the computing node if the operating state of the computing node aiming at the target hard disk is a permission state.
Optionally, the hard disk read-write control apparatus according to the embodiment of the present invention further includes:
and the depth release module is used for changing the operation state of the computing node aiming at the target hard disk into a non-allowable state when the computing node meets a preset token release rule, and reducing the token depth of the target hard disk according to a preset depth reduction rule.
Optionally, the depth releasing module is specifically configured to:
after the computing node finishes the read-write operation on the target hard disk, or when the time that the operating state of the computing node for the target hard disk is in the allowable state reaches a preset time threshold, the operating state of the computing node for the target hard disk is changed into the non-allowable state, and the token depth of the target hard disk is reduced according to a preset depth reduction rule.
Optionally, the hard disk read-write control apparatus according to the embodiment of the present invention further includes:
and the operation forbidding module is used for forbidding the computing node to carry out read-write operation on the target hard disk if the token depth of the target hard disk is not less than the depth threshold.
Optionally, the hard disk read-write control apparatus according to the embodiment of the present invention further includes:
the resource determining module is used for determining the occupied read-write resource of the target hard disk as the read-write resource to be used when the computing node performs read-write operation on the data to be operated;
and the threshold value determining module is used for removing the read-write resources to be used from the total read-write resources of the target hard disk to obtain the depth threshold value.
In a third aspect, an embodiment of the present invention provides an electronic device, including a processor and a memory;
the memory is used for storing a computer program;
the processor is configured to implement the hard disk read/write control method according to any one of the first aspect when executing the program stored in the memory.
In a fourth aspect, an embodiment of the present invention provides a storage medium, where a computer program is stored in the computer-readable storage medium, and the computer program, when executed by a processor, implements the hard disk read-write control method according to any one of the first aspects.
The hard disk read-write control method, the hard disk read-write control device, the electronic equipment and the storage medium provided by the embodiment of the invention determine a target hard disk where data to be operated are located; judging the operation state of a computing node requesting to operate data to be operated aiming at a target hard disk; if the operation state of the computing node for the target hard disk is a non-allowable state, obtaining the token depth of the target hard disk, wherein the token depth of the target hard disk is used for representing occupied read-write resources in the target hard disk; judging the size relation between the token depth of the target hard disk and a depth threshold; if the token depth of the target hard disk is smaller than the depth threshold value, the operation state of the computing node aiming at the target hard disk is changed into an allowable state, and the token depth of the target hard disk is increased according to a preset depth increasing rule. Whether the target hard disk can allow the access of the computing node is judged according to the token depth of the target hard disk, when the token depth of the target hard disk is smaller than the depth threshold value, the computing node is allowed to perform corresponding read-write operation on the target hard disk, a plurality of computing nodes can access one hard disk at the same time, the working efficiency of the computing node can be improved, and therefore the overall operation efficiency of the network is improved. Of course, not all of the above advantages need be achieved in the practice of any one product or method of the present invention.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a hard disk read-write control method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a data storage system according to an embodiment of the present invention;
fig. 3 is another schematic flow chart of a hard disk read-write control method according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a hard disk read/write control apparatus according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an electronic device according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
In the related SAN network, in order to ensure the bandwidth of the hard disks, each hard disk only allows IO operation of one computing node at the same time, and other computing nodes that need to read and write the hard disk need to wait in a queue. However, with the development of technologies such as SAS, the bandwidth of the hard disk is greatly increased, and the number of computing nodes in the SAN network is also greatly increased, and one hard disk only allows one computing node to perform IO operation at the same time, so that the utilization efficiency of the hard disk is reduced, and the overall operation speed of the SAN network is seriously affected.
In view of this, an embodiment of the present invention provides a hard disk read-write control method, and referring to fig. 1, the method includes:
s101, determining a target hard disk where data to be operated are located.
The hard disk read-write control method in the embodiment of the invention can be realized by a control system, and the control system is any system capable of realizing the hard disk read-write control method in the embodiment of the invention. For example:
the control system may be an apparatus comprising: a processor, a memory, a communication interface, and a bus; the processor, the memory and the communication interface are connected through a bus and complete mutual communication; the memory stores executable program code; the processor runs the program corresponding to the executable program code by reading the executable program code stored in the memory, so as to execute the hard disk read-write control method of the embodiment of the invention.
The control system may also be an application program, which is used to execute the hard disk read-write control method according to the embodiment of the present invention during running.
The control system may also be a storage medium for storing executable codes, where the executable codes are used to execute the hard disk read-write control method according to the embodiment of the present invention.
The control system can determine a target hard disk where the data to be operated is located according to the acquired data request instruction, wherein the data request instruction comprises an identifier of the data to be operated. Optionally, the data request instruction may further include an identifier of a computing node that requests to operate on the data to be operated.
And S102, judging the operation state of the computing node which requests to operate the data to be operated aiming at the target hard disk.
The control system judges the operation state of the computing node aiming at the target hard disk, and the operation state of the computing node aiming at the target hard disk is an allowable state or a non-allowable state. For example, the control system establishes an operation state table of hard disks and computing nodes, and records, for each hard disk, each computing node whose operation state for the hard disk is an allowable state in the operation state table; or recording the operation state of each computing node aiming at which hard disks of the computing node is the allowed state in the operation state table. Optionally, the control system is a computing node, and the operation state table of the control system includes identifiers of hard disks of which the operation state targeted by the computing node is an allowed state.
The control system can also determine whether the computing node is in the allowable operation state of the target hard disk by judging whether the computing node holds the token of the target hard disk, and if the computing node holds the token of the target hard disk, the operating state of the computing node aiming at the target hard disk is judged to be the allowable state; and if the computing node does not hold the token of the target hard disk, judging that the operating state of the computing node aiming at the target hard disk is a non-permission state.
S103, if the operation state of the computing node for the target hard disk is a non-allowable state, obtaining the token depth of the target hard disk, wherein the token depth of the target hard disk is used for representing the occupied read-write resources in the target hard disk.
The token depth is used for representing the occupied read-write resources in the hard disk. For example: the token depth of the target hard disk may be the occupied bandwidth of the target hard disk, or the token depth of the target hard disk may also be the number of the computing nodes performing read-write operations on the target hard disk.
And S104, judging the size relation between the token depth of the target hard disk and the depth threshold.
When the token depth of the target hard disk is the number of computing nodes performing read-write operations on the target hard disk, the depth threshold may be set in advance, and the depth threshold is set to ensure that at least two computing nodes can simultaneously access one hard disk, for example, the depth threshold may be set to 2, 3, 4, or 5, and the like.
The depth threshold value can be calculated according to the bandwidth of the target hard disk and other resources. Optionally, before the determining the relationship between the depth of the token and the depth threshold of the target hard disk, the hard disk read-write control method according to the embodiment of the present invention further includes:
step one, determining the occupied read-write resource of the target hard disk as the read-write resource to be used when the computing node performs the read-write operation on the data to be operated.
The control system determines that when the computing node executes read-write operation of the data to be operated aiming at the target hard disk, the read-write resource of the target hard disk, which is to be used, is needed to be used.
And step two, removing the read-write resources to be used from the total read-write resources of the target hard disk to obtain the depth threshold.
And the control system removes the read-write resources to be used on the basis of the total read-write resources of the target hard disk, and takes the residual resources as a depth threshold. For example, the total bandwidth of the target hard disk is 100MB (MByte/megabyte)/second, the bandwidth of the hard disk required by the compute node to perform the read/write operation of the data request instruction is 20 MB/second, and the depth threshold is 100-20 ═ 80 MB/second.
In the implementation of the invention, the depth threshold is determined according to the data to be operated, and the read-write resources of the hard disk can be fully utilized.
And S105, if the token depth of the target hard disk is smaller than the depth threshold, changing the operation state of the computing node aiming at the target hard disk into an allowable state, and increasing the token depth of the target hard disk according to a preset depth increasing rule.
When the token depth of the target hard disk is smaller than the depth threshold, changing the operation state of the computing node aiming at the target hard disk from a non-allowable state to an allowable state, for example, enabling the computing node to hold the token of the target hard disk; and simultaneously, increasing the token depth of the target hard disk according to a preset depth increasing rule. And aiming at the computing node of which the operation state of the target hard disk is the allowable state, the computing node can perform read-write operation on the target hard disk.
The preset depth increasing rule may be: in the computing nodes of which the operation state aiming at the target hard disk is a non-allowable state, when each computing node changes the allowable state aiming at the operation state of the target hard disk, the token depth occupied by the computing node is increased on the basis of the current token depth of the target hard disk. For example, when the token depth of the target hard disk is the number of the computing nodes performing read-write operations on the target hard disk, it may be set that: and in the computing nodes of which the operation state aiming at the target hard disk is a non-allowable state, adding 1 to the current token depth of the target hard disk when each computing node changes the allowable state aiming at the operation state of the target hard disk. For example, when the token depth is the occupied bandwidth of the target hard disk, it may be set as follows: and in the computing nodes of which the operation state aiming at the target hard disk is a non-allowable state, when each computing node changes the allowable state aiming at the operation state of the target hard disk, increasing the bandwidth occupied by the computing node on the basis of the current token depth of the target hard disk, and the like.
In the embodiment of the invention, whether the target hard disk can allow the access of the computing node is judged according to the token depth of the target hard disk, and when the token depth of the target hard disk is smaller than the depth threshold, the computing node is allowed to execute corresponding read-write operation on the target hard disk, so that a plurality of computing nodes can simultaneously access one hard disk, the working efficiency of the computing nodes can be improved, and the overall operation efficiency of a network is improved.
Optionally, after the determining that the computing node that requests to operate the data to be operated is in the operating state of the target hard disk, the method further includes:
and if the operation state of the computing node aiming at the target hard disk is an allowable state, completing the read-write operation of the data to be operated in the target hard disk through the computing node.
And if the operation state of the computing node for the target hard disk is an allowable state, for example, if the computing node holds a token of the target hard disk, allowing the computing node to perform read-write operation on the target hard disk.
In the embodiment of the invention, when the computing node is in the allowable operation state of the target hard disk, the computing node performs read-write operation on the target hard disk according to the data request instruction, so that a plurality of computing nodes can simultaneously access one hard disk, the working efficiency of the computing node can be improved, and the overall operation efficiency of a network is improved.
Optionally, the hard disk read-write control method according to the embodiment of the present invention further includes:
and when the computing node meets a preset token release rule, changing the operating state of the computing node aiming at the target hard disk into a non-allowable state, and reducing the token depth of the target hard disk according to a preset depth reduction rule.
The preset token release rule may be set according to an actual requirement, and optionally, the step of determining whether the computing node satisfies the preset token release rule is as follows:
after the computing node completes the read-write operation on the target hard disk, or when the time when the computing node is in the allowable state aiming at the operation state of the target hard disk reaches a preset time threshold value, the computing node is judged to meet a preset token release rule.
The preset time threshold may be set according to actual conditions, for example, set to 1 second, 5 seconds, 10 seconds, or the like. When the computing node meets a preset token release rule, changing the operating state of the computing node aiming at the target hard disk into a non-allowable state, and releasing the token depth of the target hard disk occupied by the computing node.
The preset depth reduction rule is a rule for reducing the token depth of the target hard disk at will, and can be set as follows: in the computing nodes of which the operation state aiming at the target hard disk is the allowed state, when the operation state aiming at the target hard disk is changed into the non-allowed state by each computing node, the token depth released by the computing node is subtracted on the basis of the current token depth of the target hard disk. For example, when the token depth of the target hard disk is the number of the computing nodes performing read-write operations on the target hard disk, it may be set that: and in the computing nodes of which the operation state aiming at the target hard disk is the permission state, when the operation state aiming at the target hard disk is changed into the non-permission state by one computing node, subtracting 1 from the current token depth of the target hard disk. For example, when the token depth is the occupied bandwidth of the target hard disk, it may be set as follows: in the computing nodes of which the operation state aiming at the target hard disk is the permission state, when the operation state aiming at the target hard disk is changed into the non-permission state by one computing node, the bandwidth occupied by the computing node is subtracted on the basis of the current token depth of the target hard disk.
In the embodiment of the invention, when the computing node meets the preset token release rule, the operating state of the computing node aiming at the target hard disk is changed into the non-allowable state, the rule is reduced according to the preset depth, the token depth of the target hard disk is reduced, the release of the hard disk token is ensured, and therefore, the new computing node is ensured to have a chance to carry out read-write operation on the target hard disk.
Optionally, after the determining a size relationship between the token depth of the target hard disk and the depth threshold, the method further includes:
and if the token depth of the target hard disk is not less than the depth threshold, forbidding the computing node to perform read-write operation on the target hard disk.
In the embodiment of the invention, when the token depth of the target hard disk is not less than the depth threshold, the computing node is prohibited from performing read-write operation on the target hard disk, so that the bandwidth of the computing node performing read-write operation on the target hard disk is ensured.
An embodiment of the present invention further provides a data storage system, and referring to fig. 2, the data storage system is a cluster distributed storage system, each computing resource of a computing node is distributed, data storage resource hard disks of storage nodes are also distributed, routing is performed through a single or multiple SAS switch networks, each computing node is visible to each other, and each computing node can also see each hard disk.
The computing node includes: a software-service application layer, a software-IO stream management layer, a software-SAS-HBA drive layer, a hardware mainboard, an SAS-HBA card and the like.
Software-service application layer: the method is used for realizing various computer application software, initiating a read-write request of data storage, and initiating or responding a request of data communication.
software-IO flow management layer: the data processing system is used for aggregating or splitting data from the software-service application layer, packaging the data, sending the data to a software-SAS-HBA (Host Bus Adapter) driving layer, and returning a data packet fed back by the software-SAS-HBA driving to the software-service application layer.
software-SAS-HBA driver layer: the computing node is used for sending the IO stream to the hard disk or sending the IO stream to the destination end when the computing node is used as the initiating end; when the target end is used, the IO stream request sent by the computing node of the initiating end is responded, and the IO stream request is transmitted to the software-service application layer of the computing node through the software-IO stream management layer of the computing node.
Hardware motherboard and SAS-HBA card: the hardware resources are used for bearing the computing nodes and comprise a hardware mainboard, a processor, an SAS-HBA card and the like.
SAS switch: the SAS address routing table is a hardware device responsible for SAS IO routing, and a software program of the SAS address routing table records the SAS address routing tables of all SAS devices in the data storage system of the embodiment of the invention, so that SAS IO exchange can be realized.
The SAS expander: the SAS expander is a hardware device of a storage node and can be connected with a plurality of hard disks in an expanding mode, and a software program of the SAS expander records SAS address routing tables of all SAS devices in the data storage system of the embodiment of the invention and can control SAS IO exchange.
The data storage system of the embodiment of the invention can realize data transmission between the computing nodes and the hard disk and data transmission among the computing nodes, thereby realizing cluster communication. The distributed management is adopted for the computing nodes, when part of the computing nodes are lost due to crash and other reasons, other computing nodes do not need to switch the stored data, only the hard disk data storage resources managed on the lost nodes need to be taken over averagely, and the communication quantity of information for triggering the average taking over is small. The distributed management is performed on the hard disk, when the hard disk loses resources due to power failure and the like, under the condition that redundancy is satisfied, for example, the computing node reconstructs the data of the lost hard disk to other hard Disks based on a Redundant Array of Independent Disks (RAID) data backup principle, so as to enhance disaster recovery capability.
Based on the data storage system, referring to fig. 3, the hard disk read-write control method according to the embodiment of the present invention includes:
s301, data request instructions are acquired periodically.
For each computing node, the software-SAS-HBA driver layer of the computing node periodically queries the HBA queue, for example, the software-SAS-HBA driver layer polls the HBA queue once every 10 milliseconds, and acquires a data request instruction to be sent to the target hard disk from the HBA queue.
S302, whether the computing node holds the token of the target hard disk or not is judged, if yes, S306 is executed, and if not, S303 is executed.
And the software-SAS-HBA driving layer judges whether the computing node holds the token of the target hard disk.
And S303, sending a token application request to the SAS switch where the target hard disk is located so that the SAS expander where the target hard disk is located returns the current token depth of the target hard disk.
And the software-SAS-HBA driving layer sends a token application request to the SAS expander where the target hard disk is located through the SAS-HBA card, the SAS switch and the like. And after receiving the token application request, the SAS expander returns the current token depth of the target hard disk to the computing node sending the token application request.
S304, judging the current token depth of the target hard disk and the depth threshold value, executing S305 if the current token depth of the target hard disk is smaller than the depth threshold value, otherwise, returning to S301 to continue executing.
After the software-SAS-HBA drive layer of the computing node obtains the current token depth of the target hard disk, the current token depth of the target hard disk is compared with the depth threshold value, and the depth threshold value is set to ensure that at least two computing nodes can simultaneously access one hard disk. And if the current token depth of the target hard disk is greater than or equal to the depth threshold, not executing the read-write operation of the data request instruction on the target hard disk, and returning to execute S301, namely, in the next period, re-acquiring the data request instruction.
S305, successfully obtaining the token of the target hard disk, and returning a token obtaining success instruction to the SAS expander where the target hard disk is located, so that the SAS expander increases the token depth of the target hard disk according to the token obtaining success instruction.
When the current token depth of the target hard disk is smaller than the depth threshold value, the computing node is judged to successfully acquire the token of the target hard disk, and the software-SAS-HBA driving layer sends a token acquisition success instruction to the SAS expander where the target hard disk is located through the SAS-HBA card, the SAS exchanger and the like, wherein the token acquisition success instruction represents that the acquisition of the token of the target hard disk is successful. After receiving the token acquisition success instruction, the SAS expander increases the token depth of the target hard disk according to a preset depth increase rule, for example, increases the token depth of the target hard disk by 1.
S306, sending a read-write instruction to the target hard disk to perform read-write operation.
The software-SAS-HBA driving layer issues a read-write instruction for performing read-write operation to the target hard disk through an SAS-HBA card, an SAS switch and the like so as to complete the read-write operation on the target hard disk, wherein the read-write instruction can be a data request instruction or an instruction different from the data request instruction.
S307, judging whether the computing node meets a preset token release rule, and if so, executing S308.
And judging whether the computing node meets a preset token release rule, if so, executing S308, and if not, returning to execute S301. The preset token release rule may be set according to actual requirements, for example, when the computing node completes read-write operations on the target hard disk, or when the time that the computing node holds the token of the target hard disk reaches a preset time threshold, it is determined that the computing node satisfies the preset token release rule.
S308, releasing the token of the target hard disk, and sending a token releasing instruction to the SAS expander where the target hard disk is located, so that the SAS expander where the target hard disk is located reduces the token depth of the target hard disk according to the token releasing instruction.
And when the computing node meets the preset token release rule, releasing the token of the target hard disk, namely enabling the computing node not to hold the token of the target hard disk any more. And the software-SAS-HBA driving layer sends a token release instruction to the SAS expander where the target hard disk is located through the SAS-HBA card, the SAS switch and the like, wherein the token release instruction represents a token for releasing the target hard disk. After receiving the token release instruction, the SAS expander reduces the token depth of the target hard disk according to a preset depth reduction rule, for example, reduces the token depth of the target hard disk by 1.
In the embodiment of the invention, the token of the hard disk is distributed for the computing nodes, so that a plurality of computing nodes can access one hard disk at the same time, the working efficiency of the computing nodes can be improved, and the overall operation efficiency of the network is improved.
An embodiment of the present invention further provides a hard disk read-write control device, and referring to fig. 4, the hard disk read-write control device includes:
a hard disk determining module 401, configured to determine a target hard disk where data to be operated is located;
a state determining module 402, configured to determine an operating state of the computing node that requests to operate the data to be operated with respect to the target hard disk;
a depth obtaining module 403, configured to obtain a token depth of the target hard disk if the operation state of the computing node for the target hard disk is a non-allowable state, where the token depth of the target hard disk is used to represent an occupied read-write resource in the target hard disk;
a threshold determination module 404, configured to determine a size relationship between a token depth of the target hard disk and a depth threshold;
a state calibration module 405, configured to change the operation state of the computing node for the target hard disk to an allowed state if the token depth of the target hard disk is smaller than the depth threshold, and increase the token depth of the target hard disk according to a preset depth increase rule.
In the embodiment of the invention, whether the target hard disk can allow the access of the computing node is judged according to the token depth of the target hard disk, and when the token depth of the target hard disk is smaller than the depth threshold, the computing node is allowed to execute corresponding read-write operation on the target hard disk, so that a plurality of computing nodes can simultaneously access one hard disk, the working efficiency of the computing nodes can be improved, and the overall operation efficiency of a network is improved.
Optionally, the hard disk read-write control apparatus according to the embodiment of the present invention further includes:
and the operation permission module is used for finishing the read-write operation of the data to be operated in the target hard disk through the computing node if the operating state of the computing node aiming at the target hard disk is a permission state.
In the embodiment of the invention, when the computing node is in the allowable operation state of the target hard disk, the computing node performs read-write operation on the target hard disk according to the data request instruction, so that a plurality of computing nodes can simultaneously access one hard disk, the working efficiency of the computing node can be improved, and the overall operation efficiency of a network is improved.
Optionally, the hard disk read-write control apparatus according to the embodiment of the present invention further includes:
and the depth release module is used for changing the operation state of the computing node aiming at the target hard disk into a non-allowable state when the computing node meets a preset token release rule, and reducing the token depth of the target hard disk according to a preset depth reduction rule.
Optionally, in the hard disk read-write control apparatus according to the embodiment of the present invention, the depth releasing module is specifically configured to:
after the computing node completes the read-write operation on the target hard disk, or when the time that the operating state of the computing node for the target hard disk is in the allowed state reaches a preset time threshold, the operating state of the computing node for the target hard disk is changed into the non-allowed state, and the token depth of the target hard disk is reduced according to a preset depth reduction rule.
In the embodiment of the invention, when the computing node meets the preset token release rule, the operating state of the computing node aiming at the target hard disk is changed into the non-allowable state, the rule is reduced according to the preset depth, the token depth of the target hard disk is reduced, the release of the hard disk token is ensured, and therefore, the new computing node is ensured to have a chance to carry out read-write operation on the target hard disk.
Optionally, the hard disk read-write control apparatus according to the embodiment of the present invention further includes:
and the operation forbidding module is used for forbidding the computing node to carry out read-write operation on the target hard disk if the token depth of the target hard disk is not less than the depth threshold.
In the embodiment of the invention, when the token depth of the target hard disk is not less than the depth threshold, the computing node is prohibited from performing read-write operation on the target hard disk, so that the bandwidth of the computing node performing read-write operation on the target hard disk is ensured.
Optionally, the hard disk read-write control apparatus according to the embodiment of the present invention further includes:
a resource determining module, configured to determine, when the computing node performs read-write operation on the data to be operated, a read-write resource of the target hard disk that is occupied by the computing node and is used as the read-write resource to be used;
and the threshold value determining module is used for removing the read-write resources to be used from the total read-write resources of the target hard disk to obtain the depth threshold value.
In the implementation of the invention, the depth threshold is determined according to the data to be operated, and the read-write resources of the hard disk can be fully utilized.
The embodiment of the present invention further provides an electronic device, which is shown in fig. 5 and includes a processor 501 and a memory 502;
the memory 502 is used for storing computer programs;
the processor 501 is configured to implement the following steps when executing the program stored in the memory 502:
determining a target hard disk where data to be operated are located;
judging the operation state of the computing node which requests to operate the data to be operated aiming at the target hard disk;
if the operation state of the computing node for the target hard disk is a non-allowable state, obtaining the token depth of the target hard disk, wherein the token depth of the target hard disk is used for representing the occupied read-write resource in the target hard disk;
judging the relationship between the token depth of the target hard disk and a depth threshold value;
if the token depth of the target hard disk is smaller than the depth threshold, changing the operation state of the computing node aiming at the target hard disk into an allowable state, and increasing the token depth of the target hard disk according to a preset depth increasing rule.
In the embodiment of the invention, whether the target hard disk can allow the access of the computing node is judged according to the token depth of the target hard disk, and when the token depth of the target hard disk is smaller than the depth threshold, the computing node is allowed to execute corresponding read-write operation on the target hard disk, so that a plurality of computing nodes can simultaneously access one hard disk, the working efficiency of the computing nodes can be improved, and the overall operation efficiency of a network is improved.
Optionally, the electronic device of the embodiment of the present invention further includes: a communication interface and a communication bus, wherein the processor 501, the communication interface and the memory 502 are communicated with each other through the communication bus.
Optionally, the processor 501 is configured to implement any hard disk read/write control method when executing the program stored in the memory 502.
The communication bus mentioned in the electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The communication interface is used for communication between the electronic equipment and other equipment.
The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.
An embodiment of the present invention further provides a computer-readable storage medium, in which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:
determining a target hard disk where data to be operated are located;
judging the operation state of the computing node which requests to operate the data to be operated aiming at the target hard disk;
if the operation state of the computing node for the target hard disk is a non-allowable state, obtaining the token depth of the target hard disk, wherein the token depth of the target hard disk is used for representing the occupied read-write resource in the target hard disk;
judging the relationship between the token depth of the target hard disk and a depth threshold value;
if the token depth of the target hard disk is smaller than the depth threshold, changing the operation state of the computing node aiming at the target hard disk into an allowable state, and increasing the token depth of the target hard disk according to a preset depth increasing rule.
In the embodiment of the invention, whether the target hard disk can allow the access of the computing node is judged according to the token depth of the target hard disk, and when the token depth of the target hard disk is smaller than the depth threshold, the computing node is allowed to execute corresponding read-write operation on the target hard disk, so that a plurality of computing nodes can simultaneously access one hard disk, the working efficiency of the computing nodes can be improved, and the overall operation efficiency of a network is improved.
Optionally, the computer-readable storage medium may store a computer program, and when the computer program is executed by a processor, the method for controlling reading and writing of the hard disk may be further implemented.
It is noted that, herein, relational terms such as first and second, and the like may be 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.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (12)
1. A hard disk read-write control method is characterized by comprising the following steps:
determining a target hard disk where data to be operated are located;
judging the operation state of the computing node requesting to operate the data to be operated aiming at the target hard disk;
if the operation state of the computing node for the target hard disk is a non-allowable state, obtaining the token depth of the target hard disk, wherein the token depth of the target hard disk is used for representing the occupied read-write resource in the target hard disk;
judging the size relation between the token depth of the target hard disk and a depth threshold value;
if the token depth of the target hard disk is smaller than the depth threshold, changing the operation state of the computing node aiming at the target hard disk into an allowable state, and increasing the token depth of the target hard disk according to a preset depth increasing rule;
and if the operation state of the computing node for the target hard disk is an allowable state, completing the read-write operation of the data to be operated in the target hard disk through the computing node.
2. The method of claim 1, further comprising:
and when the computing node meets a preset token release rule, changing the operating state of the computing node aiming at the target hard disk into a non-allowable state, and reducing the token depth of the target hard disk according to a preset depth reduction rule.
3. The method of claim 2, wherein the step of determining whether the computing node satisfies a predetermined token release rule is as follows:
after the computing node finishes the read-write operation on the target hard disk, or when the time when the computing node aims at the operation state of the target hard disk is in the allowable state reaches a preset time threshold value, the computing node is judged to meet a preset token release rule.
4. The method of claim 1, wherein after determining a magnitude relationship between a token depth of the target hard disk and a depth threshold, the method further comprises:
and if the token depth of the target hard disk is not less than the depth threshold, forbidding the computing node to perform read-write operation on the target hard disk.
5. The method of claim 1, wherein prior to said determining a magnitude relationship between a depth of a token and a depth threshold for said target hard disk, said method further comprises:
determining the occupied read-write resource of the target hard disk as the read-write resource to be used when the computing node performs read-write operation on the data to be operated;
and removing the read-write resources to be used from the total read-write resources of the target hard disk to obtain the depth threshold.
6. A hard disk read-write control device is characterized by comprising:
the hard disk determining module is used for determining a target hard disk where the data to be operated are located;
the state judgment module is used for judging the operation state of the computing node which requests to operate the data to be operated aiming at the target hard disk;
the depth acquisition module is used for acquiring the token depth of the target hard disk if the operation state of the computing node for the target hard disk is a non-allowable state, wherein the token depth of the target hard disk is used for representing the occupied read-write resource in the target hard disk;
the threshold value judging module is used for judging the size relationship between the token depth of the target hard disk and the depth threshold value;
the state calibration module is used for changing the operation state of the computing node aiming at the target hard disk into an allowable state if the token depth of the target hard disk is smaller than the depth threshold value, and increasing the token depth of the target hard disk according to a preset depth increasing rule;
and the operation permission module is used for completing the read-write operation of the data to be operated in the target hard disk through the computing node if the operating state of the computing node aiming at the target hard disk is a permission state.
7. The apparatus of claim 6, further comprising:
and the depth release module is used for changing the operation state of the computing node aiming at the target hard disk into a non-allowable state when the computing node meets a preset token release rule, and reducing the token depth of the target hard disk according to a preset depth reduction rule.
8. The device according to claim 7, wherein the depth release module is specifically configured to:
after the computing node finishes the read-write operation on the target hard disk, or when the time that the operating state of the computing node for the target hard disk is in the allowable state reaches a preset time threshold, the operating state of the computing node for the target hard disk is changed into the non-allowable state, and the token depth of the target hard disk is reduced according to a preset depth reduction rule.
9. The apparatus of claim 6, further comprising:
and the operation forbidding module is used for forbidding the computing node to carry out read-write operation on the target hard disk if the token depth of the target hard disk is not less than the depth threshold.
10. The apparatus of claim 6, further comprising:
the resource determining module is used for determining the occupied read-write resource of the target hard disk as the read-write resource to be used when the computing node performs read-write operation on the data to be operated;
and the threshold value determining module is used for removing the read-write resources to be used from the total read-write resources of the target hard disk to obtain the depth threshold value.
11. An electronic device comprising a processor and a memory;
the memory is used for storing a computer program;
the processor, when executing the program stored in the memory, implementing the method steps of any of claims 1-5.
12. A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a processor, carries out the method steps of any one of the claims 1-5.
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| PCT/CN2019/082262 WO2019223445A1 (en) | 2018-05-22 | 2019-04-11 | Hard disk read-write control method and apparatus, electronic device and storage medium |
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| CN112838991B (en) * | 2021-02-09 | 2023-03-24 | 芯河半导体科技(无锡)有限公司 | Method for adaptively adjusting token value of small-bandwidth scheduler |
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