CN112463023B - Data processing method, device and equipment for read-write disk and readable medium - Google Patents
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- 238000004590 computer program Methods 0.000 claims description 9
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/16—Handling requests for interconnection or transfer for access to memory bus
- G06F13/1668—Details of memory controller
Abstract
The invention discloses a data processing method of a read-write disk, which comprises the following steps: receiving an initial instruction issued by a user through a command line, and reconstructing the initial instruction based on an SCSI protocol to generate an SCSI instruction in a cdd format; issuing the SCSI instruction to a magnetic disk for processing, and receiving a processing result returned by the magnetic disk; acquiring and judging whether the processing result is correct according to the state value in the processing result; and if the processing result is correct, returning the processing result to the user. The invention also discloses a data processing device for reading and writing the disk, computer equipment and a readable storage medium. The invention issues the command through the command line, reconstructs the command according to the SCSI protocol and issues the disk, realizes that the SCSI command directly runs on the storage controller, and can appoint and issue various SCSI commands for testing the disk function, checking the data on the appointed address on the disk, debugging the BUG and the like, and has simple operation and time saving.
Description
Technical Field
The present invention relates to the field of storage technologies, and in particular, to a data processing method, apparatus, device, and readable medium for a read-write disk.
Background
The existing read-write disk worker has dd, vddnch, iometer and the like, can run on a system, and realizes the up-and-down read or write IO to the disk. dd commands can only issue read or write commands to the disk, and cannot issue other SCSI commands; vdbench and the iometer can issue various commands, but the issued commands can not be freely specified, only read and write strategies, time, block sizes and the like can be specified, one or more IO and one or more specified non-read-write SCSI commands can not be limited to be issued, and the vdbech and the iometer run on a server, can be used only by mounting a disk on the server by a storage end, can issue IO to the disk, and need to perform multiple steps for mounting to the server, so that time is consumed.
Disclosure of Invention
In view of this, an object of the embodiments of the present invention is to provide a method, an apparatus, a device, and a readable medium for processing data of a read/write disk, where the command is issued by a command line, and the command is reconstructed according to an SCSI protocol to issue a disk, so that an SCSI command is directly run on a storage controller, and multiple SCSI commands can be specified to be issued for testing a disk function, checking data at a specified address on the disk, debugging a BUG, and the like, so that the operation is simple and time-saving.
Based on the above object, an aspect of the embodiments of the present invention provides a data processing method for a read-write disc, including the following steps: receiving an initial instruction issued by a user through a command line, and reconstructing the initial instruction based on an SCSI protocol to generate an SCSI instruction in a cdd format; issuing the SCSI instruction to a magnetic disk for processing, and receiving a processing result returned by the magnetic disk; acquiring and judging whether the processing result is correct according to the state value in the processing result; and if the processing result is correct, returning the processing result to the user.
In some embodiments, further comprising: if the processing result is incorrect, a retry, cancel, or reset operation is performed based on the type of error.
In some embodiments, retrying, canceling, or resetting operations based on the type of error includes: if the error type is the disk occupation, carrying out retry operation; if the error type is a medium error, canceling operation is carried out; if the error type is a hardware error, performing a reset operation.
In some embodiments, receiving an initial instruction issued by a user through a command line includes: and receiving a management instruction issued by a user through a command line, wherein the management instruction comprises issued disk address information and an operation type.
In some embodiments, receiving an initial instruction issued by a user through a command line includes: and receiving a read-write instruction issued by a user through a command line, wherein the read-write instruction comprises issued disk address information, an operation type, a starting address and a read-write length.
In some embodiments, obtaining and determining whether the processing result is correct according to the state value in the processing result comprises: and acquiring a state value in the processing result, and if the state value is normal, confirming that the processing result is correct.
In some embodiments, obtaining and determining whether the processing result is correct according to the state value in the processing result comprises: and acquiring a state value in the processing result, if the state value is abnormal, confirming that the processing result is incorrect, and further confirming the error type of the abnormal processing result.
In another aspect of the embodiments of the present invention, a data processing apparatus for reading and writing a disc is further provided, including: the receiving module is configured to receive an initial instruction issued by a user through a command line, and reconstruct the initial instruction based on an SCSI protocol to generate an SCSI instruction in a cdd format; the processing module is configured to issue the SCSI instruction to the disk for processing and receive a processing result returned by the disk; the judging module is configured to acquire and judge whether the processing result is correct according to the state value in the processing result; and the execution module is configured to return the processing result to the user if the processing result is correct.
In some embodiments, the execution module is further configured to: if the processing result is incorrect, a retry, cancel, or reset operation is performed based on the type of error.
In some embodiments, the execution module is further configured to: if the error type is the disk occupation, performing retry operation; if the error type is a medium error, canceling operation is carried out; if the error type is a hardware error, performing a reset operation.
In some embodiments, the receiving module is further configured to: and receiving a management instruction issued by a user through a command line, wherein the management instruction comprises issued disk address information and an operation type.
In some embodiments, the receiving module is further configured to: and receiving a read-write instruction issued by a user through a command line, wherein the read-write instruction comprises issued disk address information, an operation type, a starting address and a read-write length.
In some embodiments, the determining module is further configured to: and acquiring a state value in the processing result, and if the state value is normal, confirming that the processing result is correct.
In some embodiments, the determining module is further configured to: and acquiring a state value in the processing result, if the state value is abnormal, confirming that the processing result is incorrect, and further confirming the error type of the abnormal processing result.
In another aspect of the embodiments of the present invention, there is also provided a computer device, including: at least one processor; and a memory storing computer instructions executable on the processor, the instructions when executed by the processor implementing the steps of the method.
In a further aspect of the embodiments of the present invention, a computer-readable storage medium is also provided, in which a computer program for implementing the above method steps is stored when the computer program is executed by a processor.
The invention has the following beneficial technical effects: the command line issues the command, and the command is reconstructed according to the SCSI protocol to issue the disk, so that the SCSI command can be directly operated on the storage controller, and various SCSI commands can be appointed to be issued and used for testing the disk function, checking data on an appointed address on the disk, debugging the BUG and the like.
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 only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
FIG. 1 is a diagram of an embodiment of a data processing method for reading and writing a disk according to the present invention;
FIG. 2 is a diagram of an embodiment of a data processing apparatus for reading from and writing to a disk according to the present invention;
FIG. 3 is a schematic diagram of an embodiment of a computer device provided by the present invention;
FIG. 4 is a schematic diagram of an embodiment of a computer-readable storage medium provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are only used for convenience of expression and should not be construed as a limitation to the embodiments of the present invention, and no description is given in the following embodiments.
In view of the above objects, a first aspect of embodiments of the present invention proposes an embodiment of a data processing method for reading from and writing to a disc. Fig. 1 is a schematic diagram illustrating an embodiment of a data processing method for reading and writing a disc according to the present invention. As shown in fig. 1, the embodiment of the present invention includes the following steps:
s01, receiving an initial instruction issued by a user through a command line, and reconstructing the initial instruction based on an SCSI protocol to generate an SCSI instruction in a cdd format;
s02, issuing the SCSI instruction to the disk for processing, and receiving the processing result returned by the disk;
s03, acquiring and judging whether the processing result is correct according to the state value in the processing result; and
and S04, if the processing result is correct, returning the processing result to the user.
In this embodiment, the C language is used for encoding, and a command line is added to the normal read/write disc IO processing code. On the storage system, the SCSI command processing module is responsible for scanning the disk, issuing IO to the disk, receiving the SCSI command result processed by the disk and performing corresponding processing, and the module provides a unified interface, that is, an interface for receiving SCSI commands. The judgment of input instructions is added in the command line, the interfaces of the SCSI instruction processing module for receiving SCSI designation are called aiming at different SCSI instructions, the SCSI instructions are all issued to the magnetic disk, the magnetic disk is processed, after the processing, the SCSI instruction processing module processes, and the processed result is returned to the command line to be displayed to the user. The read-write disk can be directly operated on the storage controller without being mounted on a server, the operation is simple, and the complicated mounting step is omitted. And issuing various SCSI commands which are not limited to read and write operations. The method and the device are convenient for testing the functions of the disk, debugging the BUG, checking data on a specified address on the disk and the like.
In this embodiment, a uniform interface vl _ submit _ io (sci _ ccb _ t ccb) is provided to the outside, that is, an interface for receiving an SCSI command, where the parameter ccb needs to indicate a SCSI command type op, and a disk ID and an LBA to be issued. And constructing different SCSI instructions according to different op instruction types, and issuing the SCSI instructions to the disk according to a format specified by a SCSI protocol.
In this embodiment, taking the query of the temperature of the hard disk as an example, the behavior of receiving a command sent by a user is as follows: # pl _ scsi-l 0-w r-D2-D256-c 0x4D,0,0x0D,0,0,0,0,1,0, 0. Where, -D2 represents sending to disk drive 2, 0x4D represents the LOG SENSE command.
In some embodiments of the invention, further comprising: if the processing result is incorrect, a retry, cancel, or reset operation is performed based on the type of error.
In some embodiments of the invention, retrying, canceling, or resetting operations based on error type includes: if the error type is the disk occupation, carrying out retry operation; if the error type is a medium error, canceling operation is carried out; if the error type is a hardware error, performing a reset operation.
In some embodiments of the present invention, receiving an initial instruction issued by a user through a command line includes: and receiving a management instruction issued by a user through a command line, wherein the management instruction comprises issued disk address information and an operation type.
In this embodiment, the command line format is as follows: -D represents the issued disk address information; -c represents the type of operation.
In some embodiments of the present invention, receiving an initial instruction issued by a user through a command line includes: and receiving a read-write instruction issued by a user through a command line, wherein the read-write instruction comprises issued disk address information, an operation type, a starting address and a read-write length.
In this embodiment, the command line format is as follows: -D represents the issued disk address information; -c represents the type of operation; -w represents a specific read-write operation, read as r, write as w, non-read as n; -l denotes the starting address LBA; length of read or write.
In some embodiments of the present invention, obtaining and determining whether the processing result is correct according to the state value in the processing result includes: and acquiring a state value in the processing result, and if the state value is normal, confirming that the processing result is correct.
In some embodiments of the present invention, obtaining and determining whether the processing result is correct according to the state value in the processing result includes: and acquiring a state value in the processing result, if the state value is abnormal, confirming that the processing result is incorrect, and further confirming the error type of the abnormal processing result.
It should be noted that, the steps in the embodiments of the data processing method for a read/write disc described above can be mutually intersected, replaced, added, and deleted, so that the data processing method for a read/write disc converted by these reasonable permutations and combinations shall also belong to the scope of the present invention, and shall not limit the scope of the present invention to the embodiments.
In view of the above object, a second aspect of the embodiments of the present invention provides a data processing apparatus for reading and writing a disc. Fig. 2 is a schematic diagram of an embodiment of a data processing apparatus for reading from and writing to a disc according to the present invention. As shown in fig. 2, the embodiment of the present invention includes the following modules: a receiving module S11, configured to receive an initial instruction issued by a user through a command line, and reconstruct the initial instruction based on an SCSI protocol to generate an SCSI instruction in a cdd format; the processing module S12 is configured to issue the SCSI command to the disk for processing, and receive a processing result returned by the disk; the judging module S13 is configured to obtain and judge whether the processing result is correct according to the state value in the processing result; and an execution module S14 configured to return the processing result to the user if the processing result is correct.
In some embodiments of the invention, the execution module S14 is further configured to: if the processing result is incorrect, a retry, cancel, or reset operation is performed based on the type of error.
In some embodiments of the invention, the execution module S14 is further configured to: if the error type is the disk occupation, performing retry operation; if the error type is a medium error, canceling operation is carried out; if the error type is a hardware error, performing a reset operation.
In some embodiments of the invention, the receiving module S11 is further configured to: and receiving a management instruction issued by a user through a command line, wherein the management instruction comprises issued disk address information and an operation type.
In some embodiments of the invention, the receiving module S11 is further configured to: and receiving a read-write instruction issued by a user through a command line, wherein the read-write instruction comprises issued disk address information, an operation type, an initial address and a read-write length.
In some embodiments of the invention, the determining module S13 is further configured to: and acquiring a state value in the processing result, and if the state value is normal, confirming that the processing result is correct.
In some embodiments of the invention, the determining module S13 is further configured to: and acquiring a state value in the processing result, if the state value is abnormal, confirming that the processing result is incorrect, and further confirming the error type of the abnormal processing result.
In view of the above object, a third aspect of the embodiments of the present invention provides a computer device. Fig. 3 is a schematic diagram of an embodiment of a computer device provided by the present invention. As shown in fig. 3, the embodiment of the present invention includes the following means: at least one processor S21; and a memory S22, the memory S22 storing computer instructions S23 executable on the processor, the instructions when executed by the processor implementing the steps of the above method.
The invention also provides a computer readable storage medium. FIG. 4 is a schematic diagram illustrating an embodiment of a computer-readable storage medium provided by the present invention. As shown in fig. 4, the computer readable storage medium stores S31 a computer program that, when executed by a processor, performs the method as described above S32.
Finally, it should be noted that, as those skilled in the art can understand, all or part of the processes in the methods of the above embodiments can be implemented by instructing relevant hardware by a computer program, and the program of the data processing method for a read-write disk can be stored in a computer readable storage medium, and when executed, the program can include the processes of the embodiments of the methods as described above. The storage medium of the program may be a magnetic disk, an optical disk, a Read Only Memory (ROM), a Random Access Memory (RAM), or the like. The embodiments of the computer program may achieve the same or similar effects as any of the above-described method embodiments corresponding thereto.
Furthermore, the methods disclosed according to embodiments of the invention may also be implemented as a computer program executed by a processor, which may be stored in a computer-readable storage medium. Which when executed by a processor performs the above-described functions as defined in the method disclosed by an embodiment of the invention.
Further, the above method steps and system elements may also be implemented using a controller and a computer readable storage medium for storing a computer program for causing the controller to implement the functions of the above steps or elements.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as software or hardware depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments of the present invention.
In one or more exemplary designs, the functions may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk and disc, as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy disk, blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
The foregoing is an exemplary embodiment of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the present disclosure as defined by the appended claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
It should be understood that, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly supports the exception. It should also be understood that "and/or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.
The numbers of the embodiments disclosed in the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, and the program may be stored in a computer-readable storage medium, where the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also combinations between technical features in the above embodiments or in different embodiments are possible, and there are many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
Claims (10)
1. A data processing method for reading and writing a disc, comprising the steps of:
receiving an initial instruction issued by a user through a command line, and reconstructing the initial instruction based on an SCSI protocol to generate an SCSI instruction in a cdd format;
issuing the SCSI instruction to a magnetic disk for processing, and receiving a processing result returned by the magnetic disk;
acquiring and judging whether the processing result is correct according to the state value in the processing result; and
if the processing result is correct, returning the processing result to the user;
the reconstructing the initial instruction based on the SCSI protocol to generate the SCSI instruction in the cdd format includes:
providing an interface for receiving SCSI instructions, wherein parameters in the interface comprise: SCSI instruction type op, issued disk ID and LBA; and
and constructing different SCSI instructions according to different instruction types in the parameters based on the parameters received by the interface, and issuing the SCSI instructions to corresponding disks according to the format of a SCSI protocol.
2. The data processing method of claim 1, further comprising:
and if the processing result is incorrect, carrying out retry, cancel or reset operation based on the error type.
3. The data processing method of claim 2, wherein performing a retry, cancel, or reset operation based on the type of error comprises:
if the error type is the disk occupation, carrying out retry operation;
if the error type is a medium error, canceling operation is carried out;
and if the error type is a hardware error, carrying out reset operation.
4. The data processing method of claim 1, wherein receiving an initial command issued by a user through a command line comprises:
and receiving a management instruction issued by a user through a command line, wherein the management instruction comprises issued disk address information and an operation type.
5. The data processing method of claim 1, wherein receiving an initial command issued by a user through a command line comprises:
and receiving a read-write instruction issued by a user through a command line, wherein the read-write instruction comprises issued disk address information, an operation type, an initial address and a read-write length.
6. The data processing method of claim 1, wherein obtaining and determining whether the processing result is correct according to the status value in the processing result comprises:
and acquiring a state value in the processing result, and if the state value is normal, confirming that the processing result is correct.
7. The data processing method of claim 1, wherein obtaining and determining whether the processing result is correct according to the state value in the processing result comprises:
and acquiring a state value in the processing result, if the state value is abnormal, confirming that the processing result is incorrect, and further confirming the error type of the abnormal processing result.
8. A data processing apparatus for reading from and writing to a disc, comprising:
the receiving module is configured to receive an initial instruction issued by a user through a command line, and reconstruct the initial instruction based on an SCSI protocol to generate an SCSI instruction in a cdd format;
the processing module is configured to issue the SCSI instruction to a disk for processing and receive a processing result returned by the disk;
the judging module is configured to acquire and judge whether the processing result is correct according to the state value in the processing result; and
the execution module is configured to return the processing result to the user if the processing result is correct;
the receiving module is further configured to:
providing an interface for receiving SCSI instructions, wherein parameters in the interface comprise: SCSI instruction type op, issued disk ID and LBA; and
and constructing different SCSI instructions according to different instruction types in the parameters based on the parameters received by the interface, and issuing the SCSI instructions to the corresponding disk according to the format of a SCSI protocol.
9. A computer device, comprising:
at least one processor; and
a memory storing computer instructions executable on the processor, the instructions when executed by the processor implementing the steps of any of the methods 1-7.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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| CN111124729A (en) * | 2019-12-15 | 2020-05-08 | 苏州浪潮智能科技有限公司 | Fault disk determination method, device, equipment and computer readable storage medium |
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| CN105975358A (en) * | 2016-05-03 | 2016-09-28 | 深圳市杉岩数据技术有限公司 | Fault-tolerant method and system based on SCSI equipment |
| CN110612510A (en) * | 2017-03-31 | 2019-12-24 | 华睿泰科技有限责任公司 | Input/output (I/O) isolation without a dedicated arbiter |
| CN110058821A (en) * | 2019-04-24 | 2019-07-26 | 苏州浪潮智能科技有限公司 | A kind of method and device of query service device storage information |
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