CN107589917A - A kind of distributed memory system and method - Google Patents
A kind of distributed memory system and method Download PDFInfo
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- CN107589917A CN107589917A CN201710911595.XA CN201710911595A CN107589917A CN 107589917 A CN107589917 A CN 107589917A CN 201710911595 A CN201710911595 A CN 201710911595A CN 107589917 A CN107589917 A CN 107589917A
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Abstract
The invention discloses a kind of distributed memory system, the system includes：Shunting device and multiple storage devices, shunting device is connected with each storage device respectively, shunting device, for receive for target data storage request when, segmentation object data, obtain multiple target data blocks, for each target data block, it is determined that storing the target storage device of the target data block, the target data block is sent to target storage device, so that target storage device receives and stores the target data block, target storage device is one in multiple storage devices.Using technical scheme provided by the invention, the upper limit of the storage performance of storage system is the summation of multiple storage device performance upper limits, the ability that storage service is externally provided can be improved, and, externally show as a storage device using shunting device as representative, it is not necessary to the configuration information of other equipment is changed for storage system.The invention also discloses a kind of distributed storage method, has corresponding technique effect.
Description
Technical field
The present invention relates to technical field of memory, more particularly to a kind of distributed memory system and method.
Background technology
With the rapid growth of the increase of Internet service amount, visit capacity and data traffic, the amount of storage of storage system
Increase therewith.
In recent years, SAN storage system is more prominent in numerous storage systems.SAN storage system capital equipment is deposited
Store up interchanger and SAN storage devices.In SAN storage system, multiple servers can be connected to SAN by storing interchanger and deposit
Store up in equipment, storage service is provided by SAN storage devices.
When SAN storage system externally provides storage service, it will usually which the external offer of separate unit SAN storage devices is present
The bottleneck of bandwidth performance.Either hold for the multiple mode Longitudinal Extensions for expanding cabinet of SAN storage devices addition to increase storage
Amount, or by increasing SAN storage devices number come extending transversely to improve storage performance, the storage of overall SAN storage system
Performance is also often the UPS upper performance score of separate unit storage, it is difficult to breaks through the bottleneck of the bandwidth performance externally provided.
In summary, the problems such as how effectively improving the storage performance of storage system, it is current those skilled in the art
It is badly in need of the technical problem solved.
The content of the invention
It is an object of the invention to provide a kind of distributed memory system and method, to improve storage system storage performance.
In order to solve the above technical problems, the present invention provides following technical scheme：
A kind of distributed memory system, including：
Shunting device and multiple storage devices, the shunting device are connected with each storage device respectively；
The shunting device, for when receiving the storage request for target data, splitting the target data, obtaining
To multiple target data blocks；For each target data block, it is determined that the target storage device of the target data block is stored, by the mesh
Mark data block is sent to the target storage device, so that the target storage device receives and stores the target data block, institute
Target storage device is stated as one in multiple storage devices.
Preferably, the shunting device, is specifically used for：
For each target data block, according to load value corresponding to each storage device, it is determined that storing the target data block
Target storage device, the load value determined by running state information.
Preferably, the shunting device, is additionally operable to：
For each target data block, backup storage device is determined, the target data block is sent into the backup stores
Equipment, so that the backup storage device receives and stores the target data block, the target storage device sets for multiple storages
It is at least one in standby.
Preferably, the shunting device, is additionally operable to：
The corresponding relation of the target storage device of each target data block corresponding to the target data is stored in default
In metadatabase.
Preferably, the shunting device, is additionally operable to：
When receiving the read requests for the target data, based on the default metadatabase, deposited corresponding
Store up and corresponding target data block is read in equipment；
After merging all target data blocks, the target data is obtained；
The target data is sent according to the read requests.
Preferably, the shunting device, is additionally operable to：
The default metadatabase is being based on described in execution, corresponding target data block is read in corresponding storage device
Before operation, according to default checking parameter, the read requests are verified；
If the verification passes, then the default metadatabase is based on described in performing, phase is read in corresponding storage device
Answer the operation of target data block.
A kind of distributed storage method, applied to shunting device, the shunting device is connected with each storage device respectively,
Including：
When receiving the storage request for target data, split the target data, obtain multiple target data blocks；
For each target data block, it is determined that storing the target storage device of the target data block；
The target data block is sent to the target storage device, so that the target storage device receives and stores this
Target data block, the target storage device are one in multiple storage devices.
Preferably, it is described to be directed to each target data block, it is determined that storing the target storage device of the target data block, wrap
Include：
For each target data block, according to load value corresponding to each storage device, it is determined that storing the target data block
Target storage device, the load value determined by running state information.
Preferably, it is described the target data block is sent to the target storage device after, in addition to：
The corresponding relation of the target storage device of each target data block corresponding to the target data is stored in default
In metadatabase.
Preferably, it is described the target data block is sent to the target storage device after, in addition to：
When receiving the read requests for the target data, based on the default metadatabase, deposited corresponding
Store up and corresponding target data block is read in equipment；
After merging all target data blocks, the target data is obtained；
The target data is sent according to the read requests.
The technical scheme provided using the embodiment of the present invention, shunting device receive for target data storage please
When asking, segmentation object data, multiple target data blocks are obtained, for each target data block, it is determined that storing the target data block
Target storage device, the target data block is sent to target storage device, so that target storage device receives and stores this
Target data block, target storage device are one in the multiple storage devices being connected with shunting device.By multiple storage devices
One entirety is integrated into by shunting device, that is to say, that when being stored, the upper limit of the storage performance of storage system is more
The summation of the individual storage device performance upper limit, the ability that storage service is externally provided can be improved, and, externally show as setting to shunt
Standby is a storage device of representative, it is not necessary to the configuration information of other equipment is changed for storage system.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of distributed memory system in the embodiment of the present invention；
Fig. 2 is a kind of structural representation of shunting device in the embodiment of the present invention；
Fig. 3 is a kind of implementing procedure figure of distributed storage method in the embodiment of the present invention.
Embodiment
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, described embodiment is only part of the embodiment of the present invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
It refer to Fig. 1, Fig. 1 is a kind of structural representation of distributed memory system in the embodiment of the present invention, the system bag
Include following equipment：
Shunting device and multiple storage devices, shunting device are connected with each storage device respectively；
Shunting device, for when receiving the storage request for target data, segmentation object data, obtaining multiple mesh
Mark data block；For each target data block, it is determined that the target storage device of the target data block is stored, by the target data block
Target storage device is sent to, so that target storage device receives and stores the target data block, target storage device is multiple
One in storage device.
In the present embodiment, shunting device is connected with multiple storage devices.Shunting device is directed to target receiving user
During the storage request of data, target data is split, multiple target data blocks can be obtained.This multiple target data block
Size can be with identical, and the target data block number that size and the segmentation of target data obtain can be positive correlation.If specifically,
When target data is larger, target data can be split multiple so that each the size of target data block is smaller, block number is more.
For each target data block, shunting device can determine the target storage device of the target data block, and by the target data
Block is sent to target storage device.Target storage device receives and stores the target data block.Wherein, target storage device is more
One in individual storage device.
In one embodiment of the invention, shunting device, it is specifically used for：
For each target data block, according to load value corresponding to each storage device, it is determined that storing the target data block
Target storage device, load value determined by running state information.
It should be noted that can also may be used in the present embodiment with the running state information of each storage device of timing acquisition
To be to obtain the running state information of each storage device after storage request is being received.Wherein, running state information can be with
The information such as CPU usage, memory usage and storage speed including storage device.It can determine to bear according to running state information
Load value, specifically, can be according to the weighted sum of CPU usage, memory usage, storage service amount and storage speed, load value
It is bigger, represent that storage capacity is weaker.
For each target data block, the minimum storage device of load value can be defined as storing the target data block
Target storage device.One of storage can also be randomly choosed in the storage device that load value is less than default load value threshold value
Equipment, and it is defined as storing the target storage device of the target data block.
In one embodiment of the invention, shunting device, it is additionally operable to：
For each target data block, backup storage device is determined, the target data block is sent to backup storage device,
So that backup storage device receives and stores the target data block, target storage device is at least one in multiple storage devices
It is individual.
In the present embodiment, for each target data block, it can determine that backup storage is set in multiple storage devices
It is standby.And the target data block is sent to backup storage device.Backup storage device receives and stores the target data block.Its
In, target storage device is at least one in multiple storage devices, i.e. if desired single copy backup, then only in multiple storages
A storage device is selected to be defined as storing the backup storage device of the target data block in equipment；If desired this backup of two-pack,
Two storage devices that then two storage devices can be selected in multiple storage devices and will be singled out are defined as storing the mesh
Mark the backup storage device of data block., can after preserving copy, that is, after target data block is stored in backup storage device
In the case where storage device failure or storage disk failure occurs, to reduce the probability of target data lost block.
In one embodiment of the invention, shunting device, it is additionally operable to：
The corresponding relation of the target storage device of each target data block corresponding to target data is stored in default first number
According in storehouse.
In the present embodiment, a metadatabase can be pre-set, is stored with to preserve in metadatabase and is split setting
The corresponding relation of storage device of the data block that back-up was cut with storing the data block.
The corresponding relation of the target storage device of each target data block corresponding to target data can be stored in default
In metadatabase.To inquire about or read target data block.
In one embodiment of the invention, shunting device, it is additionally operable to：
When receiving the read requests for target data, based on default metadatabase, in corresponding storage device
Read corresponding target data block；After merging all target data blocks, target data is obtained；Number of targets is sent according to read requests
According to.
When user sends the read-write requests for target data, shunting device can be based on presetting first number storehouse, corresponding
Storage device in read corresponding target data block.After all target data merged blocks read, number of targets is obtained
According to, and IP address of the target data in read requests is sent to corresponding user.
In one embodiment of the invention, shunting device, it is additionally operable to：
Perform corresponding target data block based on default metadatabase, is read in corresponding storage device operation it
Before, according to default checking parameter, read requests are verified；If the verification passes, then perform based on default metadatabase,
The operation of corresponding target data block is read in corresponding storage device.
Perform corresponding target data block based on default metadatabase, is read in corresponding storage device operation it
Before, read requests are carried out with conventional verification, is such as verified using key.Be verified after result again with default verification
Parameter is compared, it is determined that verifying whether success, if being proved to be successful, performs based on default metadatabase, in corresponding storage
Corresponding target data block is read in equipment.If authentication failed, it is dangerous request to show the read requests, can be without behaviour
Make.Read requests are verified, the security of the target data of storage can be provided.
The system provided using the embodiment of the present invention, shunting device are receiving the storage request for target data
When, segmentation object data, multiple target data blocks are obtained, for each target data block, it is determined that storing the target data block
Target storage device, the target data block is sent to target storage device, so that target storage device receives and stores the mesh
Data block is marked, target storage device is one in the multiple storage devices being connected with shunting device.Multiple storage devices are led to
Cross shunting device and be integrated into an entirety, that is to say, that when being stored, the upper limit of the storage performance of storage system is multiple
The summation of the storage device performance upper limit, the ability that storage service is externally provided can be improved, and, externally show as with shunting device
For a storage device of representative, it is not necessary to change the configuration information of other equipment for storage system.
For the ease of understanding technical scheme provided in an embodiment of the present invention, below by taking a kind of specific shunting device as an example,
Technical scheme provided in an embodiment of the present invention is illustrated.
Fig. 2 is refer to, Fig. 2 is a kind of structural representation of shunting device in the embodiment of the present invention.
The shunting device includes multiple external interfaces, multiple internal interfaces and processing module.In the inside of shunting device, often
Individual external interface and each internal interface are connected with processing module respectively.
External interface can be joined directly together with the server outside distributed memory system or subscription client, for receiving
The service request such as the storage request of user's transmission or read requests.The external interface of shunting device can support multiple interfaces mark
Standard, such as FC (Fiber Channel, fiber channel) interface, i.e. a kind of interface standard form of fiber alignment, or iSCSI
(Internet Small Computer System Interface, internet small computer system interface) etc. is common to be connect
Mouth standard.Certainly, in other embodiments of the invention, the interface standard of external interface can also be unified interface standard,
Such as, whole external interfaces supports FC interfaces.Specifically, the interface standard that external interface is supported can make according to user is actual
The interface standard corresponding to demand is supported.
Internal interface is connected with multiple storage devices in distributed memory system, one be specifically as follows in internal interface
Individual storage/reading interface is connected with a storage device.
Processing module, for when receiving the storage request for target data, segmentation object data, obtaining multiple mesh
Data block is marked, for each target data block, it is determined that the target storage device of the target data block is stored, by the target data block
Target storage device is sent to, so that target storage device receives and stores the target data block, target storage device is multiple
One in storage device.
Corresponding to above method embodiment, the embodiment of the present invention additionally provides a kind of distributed storage method, this method
Applied to shunting device, shunting device is connected with each storage device respectively, a kind of distributed storage method described below with
A kind of above-described distributed memory system can be mutually to should refer to.
Shown in Figure 3, this method comprises the following steps：
S101, receive for target data storage request when, segmentation object data, obtain multiple target datas
Block；
S102, for each target data block, it is determined that storing the target storage device of the target data block；
S103, the target data block is sent to target storage device, so that target storage device receives and stores the mesh
Data block is marked, target storage device is one in multiple storage devices.
The method provided using the embodiment of the present invention, shunting device are receiving the storage request for target data
When, segmentation object data, multiple target data blocks are obtained, for each target data block, it is determined that storing the target data block
Target storage device, the target data block is sent to target storage device, so that target storage device receives and stores the mesh
Data block is marked, target storage device is one in the multiple storage devices being connected with shunting device.Multiple storage devices are led to
Cross shunting device and be integrated into an entirety, that is to say, that when being stored, the upper limit of the storage performance of storage system is multiple
The summation of the storage device performance upper limit, the ability that storage service is externally provided can be improved, and, externally show as with shunting device
For a storage device of representative, it is not necessary to change the configuration information of other equipment for storage system.
In the specific embodiment of the present invention, step S102 comprises the following steps：
For each target data block, according to load value corresponding to each storage device, it is determined that storing the target data block
Target storage device, load value determined by running state information.
In the specific embodiment of the present invention, after the target data block is sent into target storage device,
Also include：
The corresponding relation of the target storage device of each target data block corresponding to target data is stored in default first number
According in storehouse.
In the specific embodiment of the present invention, after the target data block is sent into target storage device,
Also include：
When receiving the read requests for target data, based on default metadatabase, in corresponding storage device
Read corresponding target data block；After merging all target data blocks, target data is obtained；Number of targets is sent according to read requests
According to.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be with it is other
The difference of embodiment, between each embodiment same or similar part mutually referring to.For dress disclosed in embodiment
For putting, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is referring to method part
Explanation.
Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description
And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, the composition and step of each example are generally described according to function in the above description.These
Function is performed with hardware or software mode actually, application-specific and design constraint depending on technical scheme.Specialty
Technical staff can realize described function using distinct methods to each specific application, but this realization should not
Think beyond the scope of this invention.
Directly it can be held with reference to the step of method or algorithm that the embodiments described herein describes with hardware, processor
Capable software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
Specific case used herein is set forth to the principle and embodiment of the present invention, and above example is said
It is bright to be only intended to help and understand technical scheme and its core concept.It should be pointed out that for the common of the art
For technical staff, under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these
Improve and modification is also fallen into the protection domain of the claims in the present invention.
Claims (10)
- A kind of 1. distributed memory system, it is characterised in that including：Shunting device and multiple storage devices, the shunting device are connected with each storage device respectively；The shunting device, for when receiving the storage request for target data, splitting the target data, obtaining more Individual target data block；For each target data block, it is determined that the target storage device of the target data block is stored, by the number of targets The target storage device is sent to according to block, so that the target storage device receives and stores the target data block, the mesh It is one in multiple storage devices to mark storage device.
- 2. distributed memory system according to claim 1, it is characterised in that the shunting device, be specifically used for：For each target data block, according to load value corresponding to each storage device, it is determined that storing the mesh of the target data block Storage device is marked, the load value is determined by running state information.
- 3. distributed memory system according to claim 1, it is characterised in that the shunting device, be additionally operable to：For each target data block, backup storage device is determined, the target data block is sent to the backup storage device, So that the backup storage device receives and stores the target data block, the target storage device is in multiple storage devices It is at least one.
- 4. the distributed memory system according to any one of claims 1 to 3, it is characterised in that the shunting device, It is additionally operable to：The corresponding relation of the target storage device of each target data block corresponding to the target data is stored in default first number According in storehouse.
- 5. distributed memory system according to claim 4, it is characterised in that the shunting device, be additionally operable to：When receiving the read requests for the target data, based on the default metadatabase, set in corresponding storage Standby middle reading corresponding target data block；After merging all target data blocks, the target data is obtained；The target data is sent according to the read requests.
- 6. distributed memory system according to claim 5, it is characterised in that the shunting device, be additionally operable to：The default metadatabase is being based on described in execution, the operation of corresponding target data block is read in corresponding storage device Before, according to default checking parameter, the read requests are verified；If the verification passes, then the default metadatabase is based on described in performing, corresponding mesh is read in corresponding storage device Mark the operation of data block.
- A kind of 7. distributed storage method, it is characterised in that applied to shunting device, the shunting device respectively with each storage Equipment connects, including：When receiving the storage request for target data, split the target data, obtain multiple target data blocks；For each target data block, it is determined that storing the target storage device of the target data block；The target data block is sent to the target storage device, so that the target storage device receives and stores the target Data block, the target storage device are one in multiple storage devices.
- 8. distributed storage method according to claim 7, it is characterised in that it is described to be directed to each target data block, really Surely the target storage device of the target data block is stored, including：For each target data block, according to load value corresponding to each storage device, it is determined that storing the mesh of the target data block Storage device is marked, the load value is determined by running state information.
- 9. according to the distributed storage method described in any one of claim 7 or 8, it is characterised in that described by the number of targets After the target storage device being sent to according to block, in addition to：The corresponding relation of the target storage device of each target data block corresponding to the target data is stored in default first number According in storehouse.
- 10. according to the method for claim 9, it is characterised in that the target data block is sent to the target described After storage device, in addition to：When receiving the read requests for the target data, based on the default metadatabase, set in corresponding storage Standby middle reading corresponding target data block；After merging all target data blocks, the target data is obtained；The target data is sent according to the read requests.
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