CN112306986A - Storage method, device, equipment and storage medium of distributed file system - Google Patents
Storage method, device, equipment and storage medium of distributed file system Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000004044 response Effects 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000004590 computer program Methods 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 6
- 238000013500 data storage Methods 0.000 description 7
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/18—File system types
- G06F16/182—Distributed file systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/17—Details of further file system functions
- G06F16/172—Caching, prefetching or hoarding of files
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0604—Improving or facilitating administration, e.g. storage management
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/061—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
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/067—Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
Abstract
The invention discloses a storage method, a storage device, storage equipment and a storage medium of a distributed file system. The method comprises the following steps: receiving a write-in request for a target file sent by a client; determining target file information and content to be written according to the writing request, and determining the size of the content to be written; in response to that the size of the content to be written does not exceed a preset value, generating metadata for storing the target file information, and adding an inline field for storing the content to be written in the metadata; and performing a disk-dropping process on the metadata containing the target file information and the content to be written so as to store the metadata into a metadata pool. According to the scheme, the target file information and the content to be written of the target file with relatively small data volume can be simultaneously stored in the metadata pool in a landed mode, so that the disc writing times of small files are reduced, the read-write IO path of the small files is shortened, the storage efficiency is effectively improved, and meanwhile, the subsequent data loading is greatly facilitated.
Description
Technical Field
The present invention relates to the field of storage, and in particular, to a storage method, apparatus, device, and storage medium for a distributed file system.
Background
Distributed file system refers to a file system in which the physical storage resources managed by the file system are not directly connected to a local node, but are connected to a node (which may be simply understood as a computer) through a computer network, or are a complete hierarchical file system formed by combining several different logical disk partitions or volume labels. In recent years, distributed file systems are widely applied to scenes such as video monitoring, broadcast and television media assets and the like.
At present, the storage mode of the existing distributed file system uses metadata to store file information, such as attribute information of file name, size, location, etc., and writes file content into a disk in a common mode, which requires at least two disk drops for one more file, and also requires loading file information in a metadata pool before reading the file information, and then reading the file content according to the file information. The writing efficiency and reading efficiency of such a memory are very low, and therefore improvements are needed.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a storage method, apparatus, device and storage medium for a distributed file system, which can reduce the number of times of disk dropping and improve storage efficiency.
According to a first aspect of the present invention, there is provided a storage method of a distributed file system, the method comprising:
receiving a write-in request for a target file sent by a client;
determining target file information and content to be written according to the writing request, and determining the size of the content to be written;
in response to that the size of the content to be written does not exceed a preset value, generating metadata for storing the target file information, and adding an inline field for storing the content to be written in the metadata;
and performing a disk-dropping process on the metadata containing the target file information and the content to be written so as to store the metadata into a metadata pool.
In one embodiment, the method further comprises:
responding to the situation that the size of the content to be written exceeds a preset value, generating metadata for storing the target file information, and storing the target file information in a metadata pool in a disc-dropping manner;
and determining a target storage position according to the target file information, and storing the content to be written in a drop manner to the target storage position.
In one embodiment, the method further comprises:
receiving a reading request for a target file sent by a client;
loading corresponding metadata from a metadata pool according to the reading request;
and in response to the corresponding metadata having the inline field, reading the inline field of the corresponding metadata and returning the inline field of the corresponding metadata to the client as a result.
In one embodiment, the method further comprises:
in response to the corresponding metadata not having an inline field, determining a target storage location of a target file according to the corresponding metadata;
and reading data according to the target storage position and returning the data to the client as a result.
In one embodiment, the physical storage device corresponding to the element number pool is a solid state disk.
In one embodiment, the physical storage device corresponding to the target storage location is a mechanical hard disk.
In one embodiment, the preset value is 64 kbytes.
According to a second aspect of the present invention, there is provided a storage apparatus of a distributed file system, the apparatus comprising:
the request receiving module is used for receiving a write-in request for the target file sent by the client;
a content size determining module, configured to determine, according to the write request, target file information and content to be written, and determine the size of the content to be written;
the metadata generation module is used for generating metadata used for storing the target file information when the size of the content to be written does not exceed a preset value, and adding an inline field used for storing the content to be written into the metadata;
and the data destaging module is used for destaging the metadata containing the target file information and the content to be written so as to store the metadata in a metadata pool.
According to a third aspect of the present invention, there is also provided a computer apparatus comprising:
at least one processor; and
the storage device comprises a storage, a computer program which can be run on a processor is stored in the storage, and the storage method of the distributed file system is executed when the processor executes the computer program.
According to a fourth aspect of the present invention, there is also provided a computer-readable storage medium storing a computer program which, when executed by a processor, performs the aforementioned storage method of a distributed file system.
According to the storage method of the distributed file system, the size of the content to be written is determined by the writing request of the target file, the inline field for storing the content to be written is added in the produced metadata when the size of the content to be written does not exceed the preset value, and then the target file information and the content to be written are simultaneously stored in the metadata pool in a landed mode, so that the disc writing times of small files are reduced, the reading and writing IO (input/output) path of the small files is shortened, the storage efficiency is effectively improved, and meanwhile, the subsequent data loading is greatly facilitated.
In addition, the invention also provides a storage device of the distributed file system, a computer device and a computer readable storage medium, which can also realize the technical effects and are not described herein again.
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 schematic flow chart of a storage method of a distributed file system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a storage device of a distributed file system according to another embodiment of the present invention;
fig. 3 is an internal structural view of a computer apparatus according to another embodiment of 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 merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
In one embodiment, please refer to fig. 1, which provides a storage method of a distributed file system, specifically the method includes the following steps:
s100, receiving a write-in request for a target file sent by a client;
s200, determining target file information and content to be written according to the writing request, and determining the size of the content to be written;
s300, in response to the fact that the size of the content to be written does not exceed a preset value, generating metadata for storing the target file information, and adding an inline field for storing the content to be written in the metadata;
s400, the metadata containing the target file information and the content to be written is subjected to disk dropping so as to be stored in a metadata pool.
According to the storage method of the distributed file system, the size of the content to be written is determined by the writing request of the target file, the inline field for storing the content to be written is added in the produced metadata when the size of the content to be written does not exceed the preset value, and then the target file information and the content to be written are simultaneously stored in the metadata pool in a landed mode, so that the disc writing times of small files are reduced, the reading and writing IO (input/output) path of the small files is shortened, the storage efficiency is effectively improved, and meanwhile, the subsequent data loading is greatly facilitated.
In another embodiment, based on the foregoing embodiment, the storage method of a distributed file system provided by the present invention further includes the following steps:
s510, responding to the situation that the size of the content to be written exceeds a preset value, generating metadata for storing the target file information, and storing the target file information in a metadata pool in a disc-dropping manner;
s520, determining a target storage position according to the target file information, and storing the content to be written in a drop manner to the target storage position.
In another embodiment, based on the foregoing embodiment, the storage method of a distributed file system provided by the present invention further includes the following steps:
s610, receiving a reading request for a target file sent by a client;
s620, loading corresponding metadata from a metadata pool according to the reading request;
s630, in response to the corresponding metadata having the inline field, reading the inline field of the corresponding metadata and returning the inline field to the client as a result.
In another embodiment, based on the foregoing embodiment, the storage method of a distributed file system provided by the present invention further includes the following steps:
s650, in response to the corresponding metadata does not have the inline field, determining a target storage location of the target file according to the corresponding metadata;
and S660, reading data according to the target storage position and returning the data to the client as a result.
In another embodiment, in order to ensure data storage and reading performance, the physical storage device corresponding to the metadata pool is a solid state disk. Preferably, the physical storage device corresponding to the target storage location is a mechanical hard disk; therefore, by adopting the method, relatively small files can be written into the solid state disk in a one-time disk-dropping mode, relatively large data only stores file information in a metadata form in the solid state disk, and file contents are stored in the mechanical hard disk, so that the waste of storage resources of the solid state disk is avoided while the reading and writing speed is considered.
In another embodiment, in order to facilitate understanding of the technical solution of the present invention, a specific file storage process is described as an example, in this embodiment, 64 kilobytes are taken as an example of the preset value, that is, files smaller than or equal to 64 kilobytes are small files, and it is assumed that a certain distributed file system needs to store a file 1 and a file 2, where a content to be written in the file 1 is 36 kilobytes and a content to be written in the file 2 is 128 kilobytes, and specific storage and reading processes for the file 1 and the file 2 are as follows:
step 1, receiving a write-in request of a user for a file 1 and a write-in request of a file 2 sent by a client;
step 2, according to the file 1 writing request in step 1, obtaining the metadata information (including the name, content to be written, content size, storage location, etc.) of the file 1, and similarly obtaining the corresponding information of the file 2
Step 3, comparing the size of the content to be written in the file with the set 64 kilobytes, if the content to be written in the file 1 is 36 kilobytes less than 64 kilobytes, adding an inline field inline _ data in the metadata information of the file 1, and writing the content to be written in the file 1 into the inline field inline _ data, so that the metadata information and the written content of the file 1 are stored in a metadata pool together in a diskless mode
And 4, if the content to be written exceeds 64 kilobytes, performing data storage in a common writing mode, namely for the file 2, as the content to be written exceeds 64 kilobytes, the metadata only stores metadata information of the file, and the content to be written of the file 2 needs to be landed according to the data storage position in the metadata information.
Step 5, receiving a reading request of a user for the file 1 from a client, loading the inline _ data when directly loading the metadata corresponding to the file 1 according to the reading request, determining the content of the file 1 by reading the inline _ data in the metadata, and determining the data storage position of the searched file according to the metadata information of the file, and initiating reading of the data content from the disk reading data storage position;
step 6, receiving a reading request for the file 2 sent by the user from the client, and because the metadata corresponding to the file 2 does not contain the inline field, it is necessary to first read the metadata corresponding to the file 2, determine the data storage location of the file 2, and read the corresponding content from the data storage location of the file 2.
According to the storage method of the distributed file system, when the file writing is executed, the file content of which the file content is smaller than or equal to the preset value is directly written into the inline _ data field of the metadata information, so that the disc writing operation is reduced, and the inline field is directly read from the metadata information when the data reading operation is executed, so that the loading from a data pool is avoided, the read-write IO path of the small file is shortened, and the read-write performance of the small file is improved.
In another embodiment, referring to fig. 2, the present invention provides a storage device 70 of a distributed file system, specifically the storage device includes:
a request receiving module 71, configured to receive a write request for a target file sent by a client;
a content size determining module 72, configured to determine, according to the write request, target file information and content to be written, and determine the size of the content to be written;
a metadata generating module 73, configured to generate metadata used for storing the target file information when the size of the content to be written does not exceed a preset value, and add an inline field used for storing the content to be written in the metadata;
and a data dropping module 74, configured to drop the metadata including the target file information and the content to be written to store the metadata in a metadata pool.
It should be noted that, for specific limitations of the storage apparatus of the distributed file system, reference may be made to the above limitations of the storage method of the distributed file system, and details are not described herein again. The various modules in the storage device of the distributed file system described above may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
According to another aspect of the present invention, a computer device is provided, and the computer device may be a server, and its internal structure is shown in fig. 3. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing data. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program, when executed by a processor, implements the storage method of the distributed file system described above.
According to yet another aspect of the present invention, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the storage method of the distributed file system described above.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of storing a distributed file system, the method comprising:
receiving a write-in request for a target file sent by a client;
determining target file information and content to be written according to the writing request, and determining the size of the content to be written;
in response to that the size of the content to be written does not exceed a preset value, generating metadata for storing the target file information, and adding an inline field for storing the content to be written in the metadata;
and performing a disk-dropping process on the metadata containing the target file information and the content to be written so as to store the metadata into a metadata pool.
2. The method of claim 1, further comprising:
responding to the situation that the size of the content to be written exceeds a preset value, generating metadata for storing the target file information, and storing the target file information in a metadata pool in a disc-dropping manner;
and determining a target storage position according to the target file information, and storing the content to be written in a drop manner to the target storage position.
3. The method of claim 2, further comprising:
receiving a reading request for a target file sent by a client;
loading corresponding metadata from a metadata pool according to the reading request;
and in response to the corresponding metadata having the inline field, reading the inline field of the corresponding metadata and returning the inline field of the corresponding metadata to the client as a result.
4. The method of claim 3, further comprising:
in response to the corresponding metadata not having an inline field, determining a target storage location of a target file according to the corresponding metadata;
and reading data according to the target storage position and returning the data to the client as a result.
5. The method of claim 1, wherein the physical storage device corresponding to the pool of elements is a solid state disk.
6. The method of claim 2, wherein the physical storage device corresponding to the target storage location is a mechanical hard disk.
7. The method of any one of claims 1-6, wherein the predetermined value is 64 kilobytes.
8. A storage device for a distributed file system, the device comprising:
the request receiving module is used for receiving a write-in request for the target file sent by the client;
a content size determining module, configured to determine, according to the write request, target file information and content to be written, and determine the size of the content to be written;
the metadata generation module is used for generating metadata used for storing the target file information when the size of the content to be written does not exceed a preset value, and adding an inline field used for storing the content to be written into the metadata;
and the data destaging module is used for destaging the metadata containing the target file information and the content to be written so as to store the metadata in a metadata pool.
9. A computer device, comprising:
at least one processor; and
a memory storing a computer program operable in the processor, the processor when executing the program performing the method of any of claims 1-7.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, is adapted to carry out the method of any one of claims 1 to 7.
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| CN202011259561.5A CN112306986A (en) | 2020-11-12 | 2020-11-12 | Storage method, device, equipment and storage medium of distributed file system |
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| CN202011259561.5A CN112306986A (en) | 2020-11-12 | 2020-11-12 | Storage method, device, equipment and storage medium of distributed file system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112965936A (en) * | 2021-02-26 | 2021-06-15 | 苏宁金融科技(南京)有限公司 | Processing method, device, equipment and storage medium of heterogeneous distributed model |
| CN113220237A (en) * | 2021-05-17 | 2021-08-06 | 北京青云科技股份有限公司 | Distributed storage method, device, equipment and storage medium |
| CN113485978A (en) * | 2021-06-23 | 2021-10-08 | 华泰证券股份有限公司 | Method and system for improving read-write throughput of file storage NAS and storage |
| CN114465957A (en) * | 2021-12-29 | 2022-05-10 | 天翼云科技有限公司 | Data writing method and device |
-
2020
- 2020-11-12 CN CN202011259561.5A patent/CN112306986A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112965936A (en) * | 2021-02-26 | 2021-06-15 | 苏宁金融科技(南京)有限公司 | Processing method, device, equipment and storage medium of heterogeneous distributed model |
| CN113220237A (en) * | 2021-05-17 | 2021-08-06 | 北京青云科技股份有限公司 | Distributed storage method, device, equipment and storage medium |
| CN113485978A (en) * | 2021-06-23 | 2021-10-08 | 华泰证券股份有限公司 | Method and system for improving read-write throughput of file storage NAS and storage |
| CN113485978B (en) * | 2021-06-23 | 2023-07-21 | 华泰证券股份有限公司 | Method, system and memory for improving read-write throughput capacity of file storage NAS |
| CN114465957A (en) * | 2021-12-29 | 2022-05-10 | 天翼云科技有限公司 | Data writing method and device |
| CN114465957B (en) * | 2021-12-29 | 2024-03-08 | 天翼云科技有限公司 | Data writing method and device |
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