CN108491162A - A kind of method and device improving performance of storage system - Google Patents
A kind of method and device improving performance of storage system Download PDFInfo
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- CN108491162A CN108491162A CN201810204658.2A CN201810204658A CN108491162A CN 108491162 A CN108491162 A CN 108491162A CN 201810204658 A CN201810204658 A CN 201810204658A CN 108491162 A CN108491162 A CN 108491162A
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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
- G06F3/0614—Improving the reliability of storage systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
- G06F3/0656—Data buffering arrangements
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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
- G06F3/0683—Plurality of storage devices
- G06F3/0689—Disk arrays, e.g. RAID, JBOD
Abstract
The invention discloses a kind of method and device improving performance of storage system, the performance for the storage system using the hybrid hard disk being made of RAID machineries disk, SSD solid-state disks improves, and realization process is：Configuration read-write rule：When storage system receives read-write requests, the request data received is analyzed first, and selects to enable write-back mode according to analysis result or disables write-back mode, completes read-write requests；It configures RAID machinery disks and rebuilds rule：When RAID machinery disks break down, the caching of mechanical disk is used as by idle solid-state disk, and the caching in the solid-state disk is written to the reconstruction that mechanical disk completes mechanical disk.A kind of method and device improving performance of storage system compared with prior art, promotes raid reconstruction speed, and storage system is made to obtain optimal performance by using solid-state disk as the caching of mechanical disk, highly practical, applied widely, easy to spread.
Description
Technical field
The present invention relates to technical field of data storage, especially specifically a kind of highly practical, raising performance of storage system
Method and device.
Background technology
The IO that physical hard disk provides is limited, is that there are the maximum roots of bottleneck for entire storage system.Mainstream in the past
Storage system is all the characteristics of being limited to mechanical dish structure and mechanical technology based on single mechanical disk, the property of storage system
It can be very low.Since SSD hard disks have the advantages such as high-performance, low-power consumption, small, light-weight and anti-vibration, the use of SSD hard disks
Scene is increasingly extensive.But SSD hard disks is expensive, and be easily damaged, so from cost-effective angle, generally will
SSD solid-state disks improve overall performance as the cache of the storage system based on blending agent.
In addition to this, current storage system further aspect is by caching asynchronous process IO, on the other hand by increasing disk number,
IO is distributed to the performance that system is improved on different hard disks.Cache size directly affects IOPS, caches the thing of bigger energy cache
More, in the case where cache hit probability is kept, IOPS can be higher.
Performance of the performance of storage system under different application scene is different, and the read write attribute of different application is different, including reads
Write ratio, sequence or the random and data volume size of I/O Request successively.For read operation, as long as cache is sufficiently large, can have
Effect reduces physics IO, is carried out all in cache；For write operation, no matter cache has much, final writing can all fall on disk,
100%, which writes IOPS, is substantially identical to the physics IOPS that storage device can provide.
There are the links for influencing performance at two and playing in current storage system：First, the read-write strategy that storage system uses
It is unified for write-back or writes mode, be uniformly turned on and off caching.Such single read-write strategy distinguishes application due to not having
Read write attribute selects corresponding read-write strategy, to which storage system can not be made to obtain optimal performance.Second, storage system is
Increase reliability, rear end hard disk is all made of raid modes and set up, but with the increase of hard-disk capacity, increase raid into
The risk of failure again when row is rebuild.
Based on this, the present invention proposes a kind of technology improving performance of storage system.
Invention content
The technical assignment of the present invention is to be directed to the above shortcoming, provides a kind of highly practical, raising performance of storage system
Method and device.
A method of performance of storage system being improved, for hard using the mixing being made of RAID machineries disk, SSD solid-state disks
The performance of the storage system of disk improves, and realization process is：
Step 1: configuration read-write rule：When storage system receives read-write requests, the request data received is divided first
Analysis, and select to enable write-back mode according to analysis result or disable write-back mode, complete read-write requests；
Step 2: configuration RAID machinery disks rebuild rule：When RAID machinery disks break down, it is used as by idle solid-state disk
The caching of mechanical disk, and the caching in the solid-state disk is written to the reconstruction that mechanical disk completes mechanical disk.
In the step 1 when configuration read-write rule, storage system analyzes the current read-write for receiving request data application first
Sector relevance detects that current read-write characteristic is random or sequence, then the application of different read write attributes is selected automatically
With different read-write strategies：When read write attribute is sequential write, write-back buffer is disabled；When read write attribute is random write, restore
Write-back mode.
Read write attribute detection process in the step 1 is：
Storage system records the sector number of its read-write and current IO quantity first to the IO read-write requests received；
Then it is more than 32 for IO quantity and sector number is continuously applied, judges that it, for sequential write, closes write-back buffer at this time,
Directly write data into hard disk；
For sector number, discontinuous and IO quantity is less than 32 application, judges it for random write, write-back buffer is opened, by data
Host side is responded after write-in caching, and is writing data into hard disk from the background.
RAID machinery disk reconstruction process in the step 2 is：It is surplus by reading when RAID machinery disks break down
Remaining RAID machineries disk data obtain faulty disk data, and data are first written to idle solid-state disk as the caching of mechanical disk, then
Etc. the systems free time when, the reconstruction that mechanical disk completes RAID machinery disks is written into solid-state disk data.
The detailed process that solid-state disk is write data into step 2 is：
When RAID machinery disk failures, in lookup system whether available free solid-state disk；
If so, selecting caching of the idle solid-state disk as the RAID machinery disks；If not using RAID HotSpare disk directly
The member disk rebuild as RAID；
Data are read from remaining RAID member disks and data on faulty disk are calculated；
The disc cache selected is write data into, if disc cache is solid-state disk, corresponding machine is write data into the system free time
Tool disk is simultaneously finally completed RAID reconstructions.
A kind of device improving performance of storage system, including storage system, the storage system configuration by RAID machineries disk,
In the hybrid hard disk of SSD solid-state disks composition, it is also configured in the storage system：
Configuration module being read and write, when for receiving read-write requests, the request data received being analyzed, and according to analysis result
Selection enables write-back mode or disabling write-back mode, completes read-write requests；
RAID rebuilds module, and when breaking down for RAID machinery disks, the caching of mechanical disk is used as by idle solid-state disk, and
Caching in the solid-state disk is written to the reconstruction that mechanical disk completes mechanical disk.
In the read-write configuration module, configured with data analysis unit, tactful dispensing unit, wherein
Data analysis unit is used to analyze the read-write sector relevance for the request data being currently received, and detects current read-write spy
Property be it is random or sequence；
Tactful dispensing unit for selecting the application of different read write attributes different read-write strategies automatically：When read write attribute is
When sequential write, write-back buffer is disabled, hard disk is directly write data into；When read write attribute is random write, restore write-back mode.
The data analysis unit determines current read-write characteristic well according to read-write requests quantity and sector, i.e.,：Data point
The sector number of the corresponding read-write of unit record IO read-write requests and current IO read-write requests quantity are analysed, it is then super for IO quantity
It crosses 32 and sector number is continuously applied, judge it for sequential write；And IO quantity answering less than 32 discontinuous for sector number
With judging it for random write.
The RAID is rebuild in module configured with disc cache selecting unit, date read-write cell, wherein
Disc cache selecting unit is used for when RAID machinery disks break down, and event is obtained by reading residue RAID machinery disk data
Hinder disk data, then selects idle solid-state disk or directly using HotSpare disk as disc cache；
Date read-write cell, in the system free time, data in disc cache is written for writing data into the disc cache selected
Mechanical disk completes the reconstruction of RAID machinery disks.
The disc cache selecting unit in RAID machinery disk failures, by searching in system whether available free solid-state disk
It determining disc cache, when there is idle solid-state disk, selecting the caching of the free solid state disk as RAID HotSpare disk；If no
The member disk for directly using RAID HotSpare disk to be rebuild as RAID；
Corresponding, date read-write cell from remaining RAID member disks by reading data and number on faulty disk being calculated
According to, and the disc cache selected is write data into, if disc cache is solid-state disk, corresponding heat is write data into the system free time
Standby disk is simultaneously finally completed RAID reconstructions.
A kind of method and device of raising performance of storage system of the present invention, has the following advantages：
A kind of method and device of raising performance of storage system of the present invention, the read-write sector by analyzing current application are associated with
Property, detect that current read-write characteristic is random or sequence.Then the application of different read write attributes is selected automatically different
Read-write strategy；Next proposes a kind of method promoting raid reconstruction speed by solid-state disk, by using solid-state disk as machine
The caching of tool disk rebuilds speed to promote raid, and storage system is made to obtain optimal performance, highly practical, applied widely
It is general, it is easy to spread.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
One implementation flow chart of the step of attached drawing 1 is the method for the present invention.
Two implementation flow charts of the step of attached drawing 2 is the method for the present invention.
Attached drawing 3 is the structural schematic diagram of apparatus of the present invention.
Specific implementation mode
In order to make those skilled in the art more fully understand the solution of the present invention, With reference to embodiment to this
Invention is described in further detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in attached drawing 1, Fig. 2, a method of performance of storage system being improved, for using solid by RAID machineries disk, SSD
The performance of the storage system of the hybrid hard disk of state disk composition improves.
For disadvantages mentioned above one, the read-write strategy that storage system uses is unified for write-back or writes mode, it is unified open or
Close caching.Such single read-write strategy distinguishes the read write attribute applied due to not having, and selects corresponding read-write strategy, to
Storage system can not be made to obtain optimal performance.The present invention solves in the following manner：By the read-write fan for analyzing current application
Area's relevance detects that current read-write characteristic is random or sequence.Then the application of different read write attributes is selected automatically
Different read-write strategies：For better performance when handling a large amount of sequential writes, it is temporarily disabled write-back buffer.Processing is at random and a small amount of
Write, restore write-back mode automatically.
For disadvantage two, storage system is to increase reliability, and rear end hard disk is all made of RAID modes and is set up, but with
The increase of hard-disk capacity increases RAID risks of failure again when being rebuild.The present invention solves in the following manner：It is logical
It crosses the caching using solid-state disk as mechanical disk and rebuilds speed to promote RAID, the specific steps are：After RAID breaks down,
Faulty disk data are obtained by reading remaining member disk data, data are first written to quick solid-state disk as the slow of mechanical disk
Then etc. it deposits, when the systems free time, solid-state disk data is slowly written to the reconstruction that mechanical disk completes RAID.On the one hand such method carries
It has risen RAID and has rebuild speed, on the one hand reduced the generation of failure when RAID is rebuild again.
Its realization process is：
Step 1: configuration read-write rule：When storage system receives read-write requests, the request data received is divided first
Analysis, and select to enable write-back mode according to analysis result or disable write-back mode, complete read-write requests；
Step 2: configuration RAID machinery disks rebuild rule：When RAID machinery disks break down, it is used as by idle solid-state disk
The caching of mechanical disk, and the caching in the solid-state disk is written to the reconstruction that mechanical disk completes mechanical disk.
In the step 1 when configuration read-write rule, storage system analyzes the current read-write for receiving request data application first
Sector relevance detects that current read-write characteristic is random or sequence, then the application of different read write attributes is selected automatically
With different read-write strategies：When read write attribute is sequential write, write-back buffer is disabled；When read write attribute is random write, restore
Write-back mode.
Read write attribute detection process in the step 1 is：
Storage system records the sector number of its read-write and current IO quantity first to the IO read-write requests received；
Then it is more than 32 for IO quantity and sector number is continuously applied, judges that it, for sequential write, closes write-back buffer at this time,
Directly write data into hard disk；
For sector number, discontinuous and IO quantity is less than 32 application, judges it for random write, write-back buffer is opened, by data
Host side is responded after write-in caching, and is writing data into hard disk from the background.
RAID machinery disk reconstruction process in the step 2 is：It is surplus by reading when RAID machinery disks break down
Remaining RAID machineries disk data obtain faulty disk data, and data are first written to idle solid-state disk as the caching of mechanical disk, then
Etc. the systems free time when, the reconstruction that mechanical disk completes RAID machinery disks is written into solid-state disk data.
The detailed process that solid-state disk is write data into step 2 is：
When RAID machinery disk failures, in lookup system whether available free solid-state disk；
If so, selecting caching of the idle solid-state disk as the RAID machinery disks；If not using RAID HotSpare disk directly
The member disk rebuild as RAID；
Data are read from remaining RAID member disks and data on faulty disk are calculated；
The disc cache selected is write data into, if disc cache is solid-state disk, corresponding machine is write data into the system free time
Tool disk is simultaneously finally completed RAID reconstructions.
As shown in Fig. 3, a kind of device improving performance of storage system, including storage system, the storage system configuration exist
In the hybrid hard disk be made of RAID machineries disk, SSD solid-state disks, it is also configured in the storage system：
Configuration module being read and write, when for receiving read-write requests, the request data received being analyzed, and according to analysis result
Selection enables write-back mode or disabling write-back mode, completes read-write requests；
RAID rebuilds module, and when breaking down for RAID machinery disks, the caching of mechanical disk is used as by idle solid-state disk, and
Caching in the solid-state disk is written to the reconstruction that mechanical disk completes mechanical disk.
In the read-write configuration module, configured with data analysis unit, tactful dispensing unit, wherein
Data analysis unit is used to analyze the read-write sector relevance for the request data being currently received, and detects current read-write spy
Property be it is random or sequence；
Tactful dispensing unit for selecting the application of different read write attributes different read-write strategies automatically：When read write attribute is
When sequential write, write-back buffer is disabled, hard disk is directly write data into；When read write attribute is random write, restore write-back mode.
The data analysis unit determines current read-write characteristic well according to read-write requests quantity and sector, i.e.,：Data point
The sector number of the corresponding read-write of unit record IO read-write requests and current IO read-write requests quantity are analysed, it is then super for IO quantity
It crosses 32 and sector number is continuously applied, judge it for sequential write；And IO quantity answering less than 32 discontinuous for sector number
With judging it for random write.
The RAID is rebuild in module configured with disc cache selecting unit, date read-write cell, wherein
Disc cache selecting unit is used for when RAID machinery disks break down, and event is obtained by reading residue RAID machinery disk data
Hinder disk data, then selects idle solid-state disk or directly using HotSpare disk as disc cache；
Date read-write cell, in the system free time, data in disc cache is written for writing data into the disc cache selected
Mechanical disk completes the reconstruction of RAID machinery disks.
The disc cache selecting unit in RAID machinery disk failures, by searching in system whether available free solid-state disk
It determining disc cache, when there is idle solid-state disk, selecting the caching of the free solid state disk as RAID HotSpare disk；If no
The member disk for directly using RAID HotSpare disk to be rebuild as RAID；
Corresponding, date read-write cell from remaining RAID member disks by reading data and number on faulty disk being calculated
According to, and the disc cache selected is write data into, if disc cache is solid-state disk, corresponding heat is write data into the system free time
Standby disk is simultaneously finally completed RAID reconstructions.
Above-mentioned specific implementation mode is only the specific case of the present invention, and scope of patent protection of the invention includes but not limited to
Above-mentioned specific implementation mode, a kind of claims of the method and device of any raising performance of storage system for meeting the present invention
And any technical field those of ordinary skill's appropriate change or replacement that it is done, should all fall into the special of the present invention
Sharp protection domain.
Claims (10)
1. a kind of method improving performance of storage system, which is characterized in that for using by RAID machineries disk, SSD solid-state disk groups
At the performance of storage system of hybrid hard disk improve, realization process is：
One, configuration read-write rule：When storage system receives read-write requests, the request data received is analyzed first,
And selected to enable write-back mode or disabling write-back mode according to analysis result, complete read-write requests；
Two, configuration RAID machinery disks rebuild rule：When RAID machinery disks break down, machinery is used as by idle solid-state disk
The caching of disk, and the caching in the solid-state disk is written to the reconstruction that mechanical disk completes mechanical disk.
2. a kind of method improving performance of storage system according to claim 1, which is characterized in that match in the step 1
When setting read-write rule, storage system analyzes the current read-write sector relevance for receiving request data application first, detects current
Read write attribute is random or sequence, then selects different read-write strategies automatically for the application of different read write attributes：Work as reading
When write attribute is sequential write, write-back buffer is disabled；When read write attribute is random write, restore write-back mode.
3. a kind of method improving performance of storage system according to claim 2, which is characterized in that in the step 1
Read write attribute detection process is：
Storage system records the sector number of its read-write and current IO quantity first to the IO read-write requests received；
Then it is more than 32 for IO quantity and sector number is continuously applied, judges that it, for sequential write, closes write-back buffer at this time,
Directly write data into hard disk；
For sector number, discontinuous and IO quantity is less than 32 application, judges it for random write, write-back buffer is opened, by data
Host side is responded after write-in caching, and is writing data into hard disk from the background.
4. a kind of method improving performance of storage system according to claim 1, which is characterized in that in the step 2
RAID machinery disk reconstruction process is：When RAID machinery disks break down, event is obtained by reading residue RAID machinery disk data
Then etc. hinder disk data, data are first written to idle solid-state disk as the caching of machinery disk, when the systems free time, by solid-state disk number
The reconstruction of RAID machinery disks is completed according to the mechanical disk of write-in.
5. a kind of method improving performance of storage system according to claim 4, which is characterized in that by data in step 2
Write-in solid-state disk detailed process be：
When RAID machinery disk failures, in lookup system whether available free solid-state disk；
If so, selecting caching of the idle solid-state disk as the RAID machinery disks；If not using RAID HotSpare disk directly
The member disk rebuild as RAID；
Data are read from remaining RAID member disks and data on faulty disk are calculated；
The disc cache selected is write data into, if disc cache is solid-state disk, corresponding machine is write data into the system free time
Tool disk is simultaneously finally completed RAID reconstructions.
6. a kind of device improving performance of storage system, which is characterized in that including storage system, the storage system configuration by
In the hybrid hard disk that RAID machineries disk, SSD solid-state disks form, it is also configured in the storage system：
Configuration module being read and write, when for receiving read-write requests, the request data received being analyzed, and according to analysis result
Selection enables write-back mode or disabling write-back mode, completes read-write requests；
RAID rebuilds module, and when breaking down for RAID machinery disks, the caching of mechanical disk is used as by idle solid-state disk, and
Caching in the solid-state disk is written to the reconstruction that mechanical disk completes mechanical disk.
7. a kind of device improving performance of storage system according to claim 6, which is characterized in that the read-write configures mould
In block, configured with data analysis unit, tactful dispensing unit, wherein
Data analysis unit is used to analyze the read-write sector relevance for the request data being currently received, and detects current read-write spy
Property be it is random or sequence；
Tactful dispensing unit for selecting the application of different read write attributes different read-write strategies automatically：When read write attribute is
When sequential write, write-back buffer is disabled, hard disk is directly write data into；When read write attribute is random write, restore write-back mode.
8. a kind of device improving performance of storage system according to claim 7, which is characterized in that the data analysis list
Member determines current read-write characteristic well according to read-write requests quantity and sector, i.e.,：Data analysis unit records IO read-write requests pair
The sector number for the read-write answered and current IO read-write requests quantity, are more than then 32 for IO quantity and sector number is continuously answered
With judging it for sequential write；For sector number, discontinuous and IO quantity is less than 32 application, judges it for random write.
9. a kind of device improving performance of storage system according to claim 6, which is characterized in that the RAID rebuilds mould
Configured with disc cache selecting unit, date read-write cell in block, wherein
Disc cache selecting unit is used for when RAID machinery disks break down, and event is obtained by reading residue RAID machinery disk data
Hinder disk data, then selects idle solid-state disk or directly using HotSpare disk as disc cache；
Date read-write cell, in the system free time, data in disc cache is written for writing data into the disc cache selected
Mechanical disk completes the reconstruction of RAID machinery disks.
10. a kind of device improving performance of storage system according to claim 9, which is characterized in that the disc cache choosing
Unit is selected in RAID machinery disk failures, whether available free solid-state disk determines disc cache by searching in system, empty when existing
When the solid-state disk in spare time, the caching of the free solid state disk as RAID HotSpare disk is selected；If not using RAID HotSpare disk directly
The member disk rebuild as RAID；
Corresponding, date read-write cell from remaining RAID member disks by reading data and number on faulty disk being calculated
According to, and the disc cache selected is write data into, if disc cache is solid-state disk, corresponding heat is write data into the system free time
Standby disk is simultaneously finally completed RAID reconstructions.
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