CN113360202A - Wireless unloading method of file recording equipment - Google Patents
Wireless unloading method of file recording equipment Download PDFInfo
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- CN113360202A CN113360202A CN202010713270.2A CN202010713270A CN113360202A CN 113360202 A CN113360202 A CN 113360202A CN 202010713270 A CN202010713270 A CN 202010713270A CN 113360202 A CN113360202 A CN 113360202A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 238000013500 data storage Methods 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/445—Program loading or initiating
- G06F9/44594—Unloading
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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Abstract
The invention discloses a wireless unloading method of file recording equipment, which relates to the related technical field of the file recording equipment and comprises the following steps: the data storage device is mounted under a Linux system in a custom file system format, the SFTP service uses mounting points of the custom file system as a shared directory to create the SFTP shared service, the recording device and the unloading device are both accessed to a local area network in a wireless mode, the unloading device accesses the SFTP shared created by the recording device, and the unloading device is connected to the recording device through a standard SFTP protocol to achieve data unloading. The invention converts the customized file system of the file recording device, so that the system can provide standard file transmission service, the file is sent to an unloader or a server through a wireless module, a kernel-state file system module is added, and a simple and easy-to-use engineering environment is provided for workers through software and hardware collaborative design and a mode of wirelessly unloading a self-defined file system, thereby greatly increasing the usability and flexibility.
Description
Technical Field
The invention relates to the technical field related to file recording equipment, in particular to a wireless unloading method of the file recording equipment.
Background
The file recording equipment is widely applied in the field of aviation, such as a flight data acquisition and storage system and the like. When the file recording equipment unloads data, the unloading or data analysis needs to be carried out by more complex special unloading equipment, and the difficulty of the file unloading is mainly reflected in two aspects, namely the portability of the unloading equipment, and a special unloading suite comprising an unloading box, unloading software and the like is often required to be developed aiming at the user-defined file system recording equipment; the second is the connection mode of the unloading equipment and the storage equipment.
In the data unloading of the existing file recording device, the storage device and the unloading device usually perform data transmission in a physical connection mode, so that the data unloading has problems in the aspects of usability and flexibility.
Therefore, it is necessary to provide a wireless unloading method of a file recording apparatus to solve the above problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a wireless unloading method of a file recording device, which solves the problems that the data unloading of the prior file recording device is poor, the data transmission is usually carried out between a storage device and an unloading device in a physical connection mode, and the usability and the flexibility of the data unloading are poor.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a method of wireless offloading of a file recording device, comprising the steps of:
a: mounting the data storage equipment under a Linux system in a custom file system format;
b: the SFTP service takes a mounting point of a user-defined file system as a shared directory, and creates the SFTP shared service;
c: the recording equipment and the unloading equipment are both accessed to a local area network in a wireless mode, the unloading equipment accesses SFTP sharing established by the recording equipment, and the unloading equipment is connected to the recording equipment through a standard SFTP protocol to realize data unloading;
the Linux system comprises an application layer, a VFS, a kernel-mode file system and a drive layer, wherein the kernel-mode file system module is in butt joint with the VFS layer and the drive layer to complete command conversion.
Optionally, the data storage device is composed of a file recording device, a CPU and a wireless module, the CPU is connected to the file recording device, a transmission protocol is determined by the file recording device, the CPU runs a Linux system and completes conversion from a user-defined mode to a standard protocol in a driver layer, a built-in CPU is arranged in the file recording device, the wireless module is a standard WIFI module, data converted by a kernel-state file system provides a standard file transmission service, and the wireless module provides a wireless access service to the outside.
Optionally, the file recording device includes a recording disk inside, the space of the recording disk is divided into an MBR, an entry area and a data area, the MBR occupies a fixed LBA address, and records a start and end address of each entry in the file system, a start and end address of the data area, the maximum number of files supported, and a size of a stripe.
Optionally, the entry area is divided into a first-level table, a first-level table backup, a second-level table and a second-level table backup, the first-level table is used for recording a start and end number of the second-level entry, and each entry of the second-level table represents a file and is used for recording information of time, a file name, a file size, a start address and an end address of the file.
Optionally, the storage mode of the recording disk is sequential storage.
Optionally, the file reading method of the recording disk is as follows: according to the initial address and the offset length of the file, the storage address of the data is obtained, the write operation of the file supports addition and supports writing of the last file, when the data is written, the ending logic address of the last file is directly allocated, and then the secondary table and the primary table are modified according to the write length.
Optionally, Super Block information of the custom file system corresponds to the MBR and the primary table, inode information in the VFS corresponds to secondary table information, and when the custom file system is mounted, basic information of the file system is obtained by reading the MBR and the primary table, then all valid secondary tables are read, all file information is loaded into the system, and meanwhile, data occupied by a disk space is calculated.
Optionally, the custom file system provides a standard file operation interface, the file recording device and the unloading device realize data transmission through a standard file transmission protocol, the file transmission protocol includes CFS, NFS and SFTP, the file recording device and the unloading device can communicate with each other through a wireless network, the custom file system converts a read-write and delete instruction initiated by the upper computer into a corresponding operation of the custom file system, and completes access to data.
Optionally, the access function of the kernel-mode file system module to the custom file system includes: file system initialization, file system formatting, creating a folder, deleting a folder, renaming a folder, creating a file, deleting a file, renaming a file, overwriting a file, appending a written file, dumping a file, playing back a file, obtaining a file directory, obtaining metadata, sorting metadata, and retrieving metadata.
(III) advantageous effects
The invention provides a wireless unloading method of file recording equipment, which has the following beneficial effects:
1. according to the invention, through the direct matching arrangement of the file recording device, the CPU and the wireless module and the internal software architecture, the customized file system of the file recording device is converted, so that the system can provide standard file transmission service, and the files are sent to the unloading machine or the server through the wireless module, thereby achieving the effect of wireless control transmission unloading and achieving the purpose of high-efficiency and rapid unloading.
2. According to the invention, the kernel-state file system module is added, and through software and hardware collaborative design and a mode of wirelessly unloading a user-defined file system, a simple and easy-to-use engineering environment is provided for workers, so that the usability and flexibility are greatly improved.
3. The invention stores the file in the disk by using the mode of self-defining the file system, and records the file by using the self-defining file system, thereby simplifying the hardware topological structure, reducing the cost, designing a simplified file system which meets the actual requirement, ensuring the continuous and stable recording performance, enriching the metadata recording and processing functions and improving the data security.
Drawings
FIG. 1 is a schematic diagram of a data storage device in a wireless offload method of the present invention;
FIG. 2 is a diagram of a Linux system in the wireless offloading method of the present invention;
FIG. 3 is a schematic diagram of a recording disk in the wireless offloading method of the present invention;
FIG. 4 is a schematic diagram of recording disk reads in the wireless offload method of the present invention;
FIG. 5 is a diagram illustrating file transfer in a wireless offload method according to the present 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.
According to the present invention, as shown in fig. 1-5, there is provided a technical solution:
a method of wireless offloading of a file recording device, comprising the steps of:
a: mounting the data storage equipment under a Linux system in a custom file system format;
b: the SFTP service takes a mounting point of a user-defined file system as a shared directory, and creates the SFTP shared service;
c: the recording equipment and the unloading equipment are both accessed to a local area network in a wireless mode, the unloading equipment accesses SFTP sharing established by the recording equipment, and the unloading equipment is connected to the recording equipment through a standard SFTP protocol to realize data unloading;
the Linux system comprises an application layer, a VFS, a kernel-mode file system and a drive layer, wherein the kernel-mode file system module is in butt joint with the VFS layer and the drive layer to complete command conversion.
As an optional technical scheme of the invention:
as shown in fig. 1, the data storage device is composed of a file recording device, a CPU and a wireless module, the CPU is connected with the file recording device, a transmission protocol is determined by the file recording device, the CPU runs a Linux system and completes conversion from a user-defined mode to a standard protocol on a driver layer, the file recording device is internally provided with a built-in CPU, the wireless module is a standard WIFI module, data converted by a kernel-state file system provides a standard file transmission service, and the wireless module provides a wireless access service to the outside.
As an optional technical scheme of the invention:
as shown in fig. 3 and 4, the inside of the file recording device includes a recording disk, the storage mode of the recording disk is sequential storage, the space of the recording disk is divided into a MBR, an entry area and a data area, the MBR occupies a fixed LBA address, and records the start and end addresses of entries in the file system, the start and end addresses of the data area, the maximum number of files supported and the size of a stripe, the entry area is divided into a primary table, a primary table backup, a secondary table and a secondary table backup, the primary table is used to record the start and end numbers of the secondary entries, each entry in the secondary table represents a file, and the time, the file name, the file size, the start address and the end address information of the file are recorded, and the file reading mode of the recording disk is: the method comprises the steps of obtaining a storage address of data according to a starting address and an offset length of a file, supporting addition and supporting writing of a last file for the writing operation of the file, directly distributing an ending logic address of the last file during data writing, modifying a secondary table and a primary table according to the writing length, enabling Super Block information of a user-defined file system to correspond to an MBR and the primary table, enabling inode information in a VFS to correspond to secondary table information, obtaining basic information of the file system by reading the MBR and the primary table during mounting of the user-defined file system, then reading all effective secondary tables, loading all file information into the system, and meanwhile calculating the occupied data of a disk space.
As an optional technical scheme of the invention:
as shown in fig. 5, the custom file system provides a standard file operation interface, the file recording device and the unloading device realize data transmission through a standard file transmission protocol, the file transmission protocol includes CFS, NFS and SFTP, the file recording device and the unloading device can communicate with each other through a wireless network, and the custom file system converts a read-write and delete command initiated by the upper computer into a corresponding operation of the custom file system, thereby completing access to data.
As an optional technical scheme of the invention:
the access function of the kernel mode file system module to the custom file system comprises the following steps: file system initialization, file system formatting, creating a folder, deleting a folder, renaming a folder, creating a file, deleting a file, renaming a file, overwriting a file, appending a written file, dumping a file, playing back a file, obtaining a file directory, obtaining metadata, sorting metadata, and retrieving metadata.
In summary, the following steps: the wireless unloading method of the file recording device converts the customized file system of the file recording device through the direct matching arrangement of the file recording device, the CPU and the wireless module and the internal software architecture, so that the system can provide standard file transmission service, the files are sent to an unloader or a server through the wireless module, the effect of wireless control transmission unloading is achieved, the high-efficiency and rapid unloading purpose is realized, the kernel-state file system module is newly added, a simple and easy-to-use engineering environment is provided for workers through the software and hardware collaborative design in a way of wirelessly unloading the customized file system, the usability and flexibility are greatly increased, the files are stored in a disk in a way of the customized file system, the customized file system is adopted for file recording, the hardware topological structure is simplified, the cost is reduced, and the simplified file system which meets the actual requirements is designed, the continuous and stable recording performance is ensured, the metadata recording and processing functions are enriched, and the data security is improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. A method of wireless offloading of a file recording device, comprising:
a: mounting the data storage equipment under a Linux system in a custom file system format;
b: the SFTP service takes a mounting point of a user-defined file system as a shared directory, and creates the SFTP shared service;
c: the recording equipment and the unloading equipment are both accessed to a local area network in a wireless mode, the unloading equipment accesses SFTP sharing established by the recording equipment, and the unloading equipment is connected to the recording equipment through a standard SFTP protocol to realize data unloading;
the Linux system comprises an application layer, a VFS, a kernel-mode file system and a drive layer, wherein the kernel-mode file system module is in butt joint with the VFS layer and the drive layer to complete command conversion.
2. The wireless uninstalling method of a file recording device according to claim 1, wherein:
the data storage device is composed of a file recording device, a CPU and a wireless module, the CPU is connected with the file recording device, a transmission protocol is determined by the file recording device, the CPU runs a Linux system and completes conversion from self definition to a standard protocol on a drive layer, a built-in CPU is arranged in the file recording device, the wireless module is a standard WIFI module, standard file transmission service is provided for data converted by a kernel-state file system, and wireless access service is provided for the outside by the wireless module.
3. The wireless uninstalling method of a file recording device according to claim 2, wherein:
the file recording device comprises a recording disk inside, the space of the recording disk is divided into an MBR, a table entry area and a data area, the MBR occupies a fixed LBA address, and the starting and ending address of each table entry in the recording file system, the starting and ending address of the data area, the maximum number of files supported and the size of a strip are recorded.
4. A method of wireless offloading of a file recording device according to claim 3, characterized by:
the entry area is divided into a primary table, a primary table backup, a secondary table and a secondary table backup, wherein the primary table is used for recording the initial ending number of the secondary entry, and each entry of the secondary table represents a file and is used for recording the information of the time, the file name, the file size, the initial address and the ending address of the file.
5. A method of wireless offloading of a file recording device according to claim 3, characterized by:
the storage mode of the recording disk is sequential storage.
6. A method of wireless offloading of a file recording device according to claim 3, characterized by:
the file reading mode of the recording disk is as follows: according to the initial address and the offset length of the file, the storage address of the data is obtained, the write operation of the file supports addition and supports writing of the last file, when the data is written, the ending logic address of the last file is directly allocated, and then the secondary table and the primary table are modified according to the write length.
7. The wireless uninstalling method of a file recording device according to claim 1, wherein:
the method comprises the steps that Super Block information of a user-defined file system corresponds to MBR and a primary table, inode information in VFS corresponds to secondary table information, when the user-defined file system is mounted, basic information of the file system is obtained by reading the MBR and the primary table, then all effective secondary tables are read, all file information is loaded into the system, and meanwhile, occupied data of a disk space are calculated.
8. The wireless uninstalling method of a file recording device according to claim 1, wherein:
the user-defined file system provides a standard file operation interface, the file recording device and the unloading device realize data transmission through a standard file transmission protocol, the file transmission protocol comprises CFS, NFS and SFTP, the file recording device and the unloading device can be communicated with each other through a wireless network, the user-defined file system converts a reading and writing and deleting instruction initiated by an upper computer into corresponding operation of the user-defined file system, and data access is completed.
9. The wireless uninstalling method of a file recording device according to claim 1, wherein:
the access function of the kernel mode file system module to the custom file system comprises the following steps: file system initialization, file system formatting, creating a folder, deleting a folder, renaming a folder, creating a file, deleting a file, renaming a file, overwriting a file, appending a written file, dumping a file, playing back a file, obtaining a file directory, obtaining metadata, sorting metadata, and retrieving metadata.
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