CN109783276A - Data backup and recovery device and method based on dedicated compressing card - Google Patents
Data backup and recovery device and method based on dedicated compressing card Download PDFInfo
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Abstract
The present invention relates to a kind of data backup based on dedicated compressing card and recovery device and methods, belong to information technology field, solve the problems, such as data backup storage efficiency and carrying cost, the present invention carries out compression/de-compression to being backed up/restoring data by integrating dedicated compressing card, accumulation layer/be restored in database is stored, data backup/recovery of database is realized.The present invention is by dedicated compressing card, and under conditions of not influencing CPU and storage performance, room for promotion storage efficiency saves the carrying cost of the high performance medias such as carrying cost, especially flash memory；And compression process work is in accumulation layer, fully transparent for the access of the data bank service on upper layer.
Description
Technical field
The present invention relates to information technology field more particularly to a kind of data backups and recovery device based on dedicated compressing card
And method.
Background technique
With enterprise informatization evolution, business function, number of users, units increase year by year, and information based data amount sharply increases
Long, the backup of database datafile and archive log is stored as the emphasis of database maintenance work.Traditional data backup storage,
Backup Data is write direct into accumulation layer without compression, the storing process time is long, and occupancy memory space is more, especially in flash media
The higher cost of upper preservation increases enterprise's O&M cost, and using conventional compact to carry out data compression is called by CPU
What the library gzip carried out, it needs to consume additional CPU, the performance of CPU is put forward higher requirements.
Summary of the invention
In view of above-mentioned analysis, the present invention is intended to provide a kind of data backup and recovery device based on dedicated compressing card and
Method, using dedicated compressing card, under conditions of not influencing CPU and storage performance, room for promotion storage efficiency, save storage at
This.
The purpose of the present invention is mainly achieved through the following technical solutions:
One aspect of the present invention, provides a kind of data backup based on dedicated compressing card and recovery device, including compression/extensive
Multiple interface module, compressing card drive module, dedicated compressing card and backup accumulation layer；
The compression/restoration interface module is connect with database platform, for receiving data the number of library output to be backed up
According to file and archive log file, or by after recovery data file and archive log file be output to the correspondence position of database
It sets；
The dedicated compressing card drive module is internally integrated compressing card driving and compression algorithm library, connects with dedicated compressing card
It connects, for opening compression/recovery function of dedicated compressing card；
The dedicated compressing card connection compression/restoration interface module and backup accumulation layer, on the one hand for by compress/it is extensive
Multiple interface module receives the file data of database output, and backup accumulation layer is sent to after compression；On the other hand, it is used for from backup
Accumulation layer reads the compressed data that need to restore, and the corresponding position of database platform is sent after recovery；
The backup accumulation layer, for storing compressed backup data files and archive log file.
Another aspect of the present invention provides a kind of data back up method based on dedicated compressing card, comprising the following steps:
Backup data store layer is attached with database using dedicated compressing card；
The data backup storage layer format is turned into xfs file system, the data file to be backed up in database, is returned
Shelves log-file information is specified in the file system, and sets compact model for dedicated compressing card；
After the dedicated compressing card receives data backup command, by the data file to be backed up in reading database, return
Shelves journal file is compressed；
Compressed data is output in page cache area by the dedicated compressing card to be cached；
The page cache area is written to corresponding accumulation layer for data cached.
Another aspect of the present invention provides a kind of data reconstruction method based on dedicated compressing card, which is characterized in that including
Following steps:
The accumulation layer for being stored with Backup Data is attached with database using dedicated compressing card；
Reforestation practices are set by dedicated compressing card；It reads the data file comprising backup in the accumulation layer, file day
The xfs file system of will the file information；Backup data files, the archive log the file information to be restored in accumulation layer is assigned to
Specific location in database；
Data restore instruction control under, the Backup Data that accumulation layer will be restored be sent to page cache area into
Row caching；
The page cache area is sent to dedicated compressing card progress data decompression recovery for data cached；And block basis
Data after recovery are stored the corresponding position to database by data file, archive log the file information in xfs file system
In.
Another aspect of the present invention provides a kind of data processing method based on dedicated compressing card, including above-mentioned based on special
With the data compression method and restoration methods of compressing card.
The present invention has the beneficial effect that:
1. entire data compression/recovery process does not influence business operation, storage performance is not influenced, CPU is not take up and calculates money
Accumulation layer is written in source, compressed data again, and BACKUP TIME is short, and occupancy memory space is few, can more effectively utilize memory space,
In the case where not influencing performance, the carrying cost of the high performance media such as hardware cost, especially flash memory is reduced；And it compresses
Process work is fully transparent for the access of the data bank service on upper layer in accumulation layer.
2. providing good compression effectiveness using graphical interfaces to show, O&M cost is saved for enterprise, improves O&M efficiency.
3. Backup Data can be compressed to 1/2 or 1/5 size；
4. using general gzip algorithm, accordingly even when dedicated compressing card damages, CPU solution still can be used and extrude number
According to raising robustness.
Other features and advantages of the present invention will illustrate in the following description, also, partial become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not to be construed as limiting the invention, in entire attached drawing
In, identical reference symbol indicates identical component.
Fig. 1 is that data backup and recovery device form connection schematic diagram in the embodiment of the present invention；
Fig. 2 is data back up method flow chart in the embodiment of the present invention；
Fig. 3 is data reconstruction method flow chart in the embodiment of the present invention.
Specific embodiment
Specifically describing the preferred embodiment of the present invention with reference to the accompanying drawing, wherein attached drawing constitutes the application a part, and
Together with embodiments of the present invention for illustrating the principle of the present invention.
A specific embodiment of the invention discloses a kind of data backup based on dedicated compressing card and recovery device,
As shown in Figure 1, including compression/restoration interface module, compressing card drive module, dedicated compressing card and backup accumulation layer；
The compression/restoration interface module is connect with database platform, for receiving data the number of library output to be backed up
According to file and archive log file, or by after recovery data file and archive log file be output to the correspondence position of database
It sets；
The dedicated compressing card drive module be internally integrated compressing card driving and zlib compression algorithm library (including gzip compression
Algorithm), it is connect with dedicated compressing card, compression/recovery function of dedicated compressing card is opened by external command；The external command
Including compressed data instruction and restore data command, may be from the user interface of database.
The dedicated compressing card connection compression/restoration interface module and backup accumulation layer, on the one hand, when receiving compression number
When according to order, for number of files in the database by requiring compression in compression/restoration interface module receiving compressed data order
According to being sent to backup accumulation layer after compression；On the other hand, when receiving recovery data command, for being read from backup accumulation layer
The compressed data for restoring to require to restore in backup command is taken, the corresponding position of database platform is sent after recovery；
The backup accumulation layer, for storing compressed backup data files and archive log file.
Specifically, the dedicated compressing card is the card for being exclusively used in compression independently of database platform, the library Zlib is used
Gzip compression algorithm carries out data compression.
The present embodiment uses dedicated compressing card, by calling the gzip compression algorithm in the library Zlib to be responsible for compression, instead of CPU
Calculating work, avoid in conventional compact using CPU call the library gzip compress, need to consume additional CPU.Therefore do not disappear
Additional CPU is consumed, instead since the data volume of write-in tails off, the load of CPU is lower.
Also, because using general gzip algorithm, accordingly even when dedicated compressing card damages, CPU still can be used
Solution extrudes data, and space hold does not change, and improves robustness.
The present embodiment replaces CPU to carry out compaction algorithms using dedicated compressing card, dedicated when running gzip compression algorithm
The compaction algorithms performance of compressing card is 2 times that compression operation is carried out by CPU, because accumulation layer uses under OLAP at OLTP
Bigger block, compression ratio can achieve 4 times.Archival compression ratio can achieve 10 times or more.
Specifically, the dedicated compressing card of the present embodiment is able to achieve data file the compression ratio of about 1:2, for filing day
Will file is able to achieve the compression ratio of about 1:5.In the case where not influencing performance, the utilization rate of storage is improved, hardware is reduced
Cost.
Optionally, the backup accumulation layer is formatted as xfs file system, the data file of the backup, filing day
In the file directory that will file information storage creates in xfs file system.
The data file, archive log the file information include:
Database default data file: the table spaces such as SYSTEM, TEMP, EXAMPLE, SYSAUX, UNDOTBS1, USERS
Data file.
Operation system data file in database instance: XX.dbf (different business systems Data Filename is different)
Database filing journal file.Redo Log Files (disparate databases platform, archive log filename are different)；
In order to adapt to the storage and reading of high-speed data, the present embodiment further includes page cache module, the page
Cache module connects the dedicated compressing card and backup accumulation layer, for carrying out to the data of the dedicated compressing card compression
Caching caches the Backup Data read from backup accumulation layer.
The data of compression carry out write-in caching:
When dedicated compressing card initiates a compressed data write-in cache request, compressed data is directly toward page cache
It is written in module, the content in standby storage will not directly update.The cache page (page) being written into is labeled as
Dirty, and be added into dirty list.Then periodically the cache page (page) in dirty list is write
It returns on disk, to keep the data on disk consistent with the data of page cache module.
The Backup Data of reading is cached:
When dedicated compressing card initiates a reading Backup Data request, it can check whether the Backup Data of request delays first
It has been stored in page cache module, if so, so directly reading from page cache module, has not needed access magnetic
Disk.If not having the data of request in page cache module, data must be just read from disk.Then by the standby of reading
Part data are cached in page cache module, and dedicated compressing card reads Backup Data from page cache module again.
Optionally, further to improve human-computer interaction, operator is allow intuitively to understand the particular content of data backup
And progress, the present embodiment further include graphical module, the graphical module is connect with the compression/restoration interface module, is used
In acquiring and show data backup/recovery progress；And as needed backup/restoration file size and type, estimate backup/
Restore the time needed, backup/restoration progress is shown in a manner of progress bar.
The present embodiment also discloses a kind of data back up method based on dedicated compressing card, as shown in Fig. 2, including following step
It is rapid:
Step S201, backup data store layer is attached with database using dedicated compressing card；
Step S202, the data backup storage layer format is turned into xfs file system, the number to be backed up in database
It is specified in the file system according to file, archive log the file information, and sets compact model for dedicated compressing card；
Step S203, after the described dedicated compressing card receives data backup command, the number that will be backed up in reading database
It is compressed according to file, archive log file；
Step S204, compressed data is output in page cache area by the described dedicated compressing card to be cached；
Step S205, the described page cache area is written to corresponding accumulation layer for data cached.
Optionally, the dedicated compressing card is compressed by using the gzip compression algorithm in the library Zlib, instead of CPU
Calculating work, avoid in conventional compact using CPU call the library gzip compress, need to consume additional CPU.Therefore do not disappear
Additional CPU is consumed, instead since the data volume of write-in tails off, the load of CPU is lower.
Specifically, the dedicated compressing card carries out data compression using the gzip compression algorithm in the library Zlib.
In order to realize the connection of dedicated compressing card and database, compressing card driving is integrated in the database, in data pressure
When contracting, database opens dedicated compressing card compression function by compressing card driving.
The present embodiment also discloses a kind of data reconstruction method based on dedicated compressing card, as shown in figure 3, including following step
It is rapid:
Step S301, the accumulation layer for being stored with Backup Data is attached with database using dedicated compressing card；
Step S302, reforestation practices are set by dedicated compressing card；Read the data text comprising backup in the accumulation layer
The xfs file system of part, archive log the file information；To be restored in accumulation layer backup data files, archive log file
Information is assigned to the specific location in database；
Step S303, under the control that data restore instruction, the Backup Data that accumulation layer will be restored is sent to page height
Fast buffer area is cached；
Step S304, the described page cache area is sent to data cached dedicated compressing card to carry out data decompression extensive
It is multiple；And block according in xfs file system data file, archive log the file information by the data storage after recovery to database
Corresponding position in.
The present embodiment also discloses a kind of data processing method based on dedicated compressing card, including the pressure in above-described embodiment
Contracting/restoration methods.
By compression/recovery to data, business operation is not being influenced, storage performance is not influenced, is being not take up CPU and calculate money
Data backup is realized in source, and the time is short, and occupancy memory space is few, memory space can be more effectively utilized, in the feelings for not influencing performance
Under condition, hardware cost is reduced；Good compression effectiveness is provided using graphical interfaces to show, is saved O&M cost for enterprise, is mentioned
High O&M efficiency；Backup Data can be compressed to 1/2 or 1/5 size；Using general gzip algorithm, accordingly even when dedicated
Compressing card damage still can be used CPU solution and extrude data, improves robustness.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of data backup and recovery device based on dedicated compressing card, which is characterized in that including compression/restoration interface mould
Block, compressing card drive module, dedicated compressing card and backup accumulation layer；
The compression/restoration interface module is connect with database platform, for receiving data the data the to be backed up text of library output
Part and archive log file, or by after recovery data file and archive log file be output to the corresponding position of database；
The dedicated compressing card drive module is internally integrated compressing card driving and compression algorithm library, connect with dedicated compressing card, uses
In the compression/recovery function of opening dedicated compressing card；
The dedicated compressing card connection compression/restoration interface module and backup accumulation layer, on the one hand for being connect by compression/recovery
Mouth mold block receives the file data of database output, and backup accumulation layer is sent to after compression；On the other hand, for being stored from backup
Layer reads the compressed data that need to restore, and the corresponding position of database platform is sent after recovery；
The backup accumulation layer, for storing compressed backup data files and archive log file.
2. data backup according to claim 1 and recovery device, which is characterized in that the dedicated compressing card be independently of
Database platform is exclusively used in the card of compression, carries out data compression by the gzip compression algorithm in the library Zlib.
3. data backup according to claim 1 and recovery device, which is characterized in that the backup accumulation layer is formatted
The text created in xfs file system for xfs file system, data file, the archive log file information storage of the backup
In part catalogue.
4. data backup according to claim 1 to 3 and recovery device, which is characterized in that further include that page high speed is slow
Storing module, the page cache module connect the dedicated compressing card and backup accumulation layer, for the dedicated compression
The data of card compression cache or cache to the Backup Data read from backup accumulation layer.
5. data backup according to claim 1 to 3 and recovery device, which is characterized in that further include graphical mould
Block, the graphical module are connect with the compression/restoration interface module, for acquire and show data backup/recovery into
Degree；And the file size and type of backup/restoration as needed, the time of backup/restoration needs is estimated, in a manner of progress bar
Show backup/restoration progress.
6. a kind of data back up method based on dedicated compressing card, which comprises the following steps:
Backup data store layer is attached with database using dedicated compressing card；
The data backup storage layer format is turned into xfs file system, the data file to be backed up in database, files day
Will the file information is specified in the file system, and sets compact model for dedicated compressing card；
After the dedicated compressing card receives data backup command, by the data file to be backed up in reading database, filing day
Will file is compressed；
Compressed data is output in page cache area by the dedicated compressing card to be cached；
The page cache area is written to corresponding accumulation layer for data cached.
7. data back up method according to claim 6, which is characterized in that the dedicated compressing card is calculated using Zlib compression
Method carries out data compression.
8. data back up method according to claim 7, which is characterized in that compressing card driving is integrated in the database,
Dedicated compressing card compression function is opened using compressing card driving.
9. a kind of data reconstruction method based on dedicated compressing card, which comprises the following steps:
The accumulation layer for being stored with Backup Data is attached with database using dedicated compressing card；
Reforestation practices are set by dedicated compressing card；Read includes the data file backed up, archive log text in the accumulation layer
The xfs file system of part information；Backup data files, the archive log the file information to be restored in accumulation layer is assigned to data
Specific location in library；
Under the control that data restore instruction, the Backup Data that accumulation layer will be restored is sent to page cache area and is delayed
It deposits；
The page cache area is sent to dedicated compressing card progress data decompression recovery for data cached；And block according to xfs
Data file, archive log the file information in file system store the data after recovery into the corresponding position of database.
10. a kind of data processing method based on dedicated compressing card, which is characterized in that including as claimed in claim 6 to 8
Compression method and restoration methods as claimed in claim 9.
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| CN109783276B (en) | 2021-03-02 |
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