CN105635310B - A kind of access method and device of storage resource - Google Patents
A kind of access method and device of storage resource Download PDFInfo
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- CN105635310B CN105635310B CN201610040881.9A CN201610040881A CN105635310B CN 105635310 B CN105635310 B CN 105635310B CN 201610040881 A CN201610040881 A CN 201610040881A CN 105635310 B CN105635310 B CN 105635310B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
Abstract
The application provides the access method and device of a kind of storage resource, this method comprises: the ownership memory node of the corresponding entity LUN and entity LUN of LUN identification information is obtained from the LUN relationship list item of local record according to the LUN identification information carried in I/O request when the memory node in storage system receives the I/O request of application server transmission；When the ownership memory node of entity LUN is not this memory node, the ownership memory node of Xiang Shiti LUN forwards I/O request, so that I/O request is submitted entity LUN to handle by the ownership memory node of entity LUN；After the completion of I/O request processing, the home node of entity LUN is to the memory node forward process for receiving I/O request as a result, processing result is returned to application server again by the memory node for receiving I/O request.The reliability of storage system can be effectively improved by the application, and the technical solution is simple and easy, the scalability of system is strong.
Description
Technical field
This application involves technical field of network storage more particularly to the access methods and device of a kind of storage resource.
Background technique
Social now, information system has become the important support of social production ability and enterprise's normal operation, and data are
The foundation stone of information system, business continuance are the guarantees of information system availability, and more and more users' selection saves data
In special storage system.It is relatively high to the reliability requirement of storage system for high-end storage user, and controller is
The core component of storage system completes the key functions such as data transmit-receive, data storage, data protection, the controller of storage system
Number is the important indicator for measuring storage system reliability to the degrees of tolerance of controller failure, front-end access path.
Common more controlled storage systems are dual control storage equipment at present, and a small number of producers also provide four controls storage equipment, when answering
It is simultaneously switched off with all paths between server and storage equipment, alternatively, all controller simultaneous faults in storage equipment
When, business will interrupt.Although expanding storage apparatus internal controller number can constantly promote the reliability of storage equipment, it is limited
In hardware design and software design complexity, technical difficulty is very big, is not easy to realize.
Summary of the invention
In view of this, the application provides the access method and device of a kind of storage resource, for user provide it is one higher can
By more controlled storage systems of property.
Specifically, the application is achieved by the following technical solution:
The application provides a kind of access method of storage resource, and the method is applied to the storage section in more controlled storage systems
On point, more controlled storage systems include multiple memory nodes, this method comprises:
When memory node receives the I/O request of application server transmission, according to the LUN identification carried in the I/O request
Information obtains returning for the LUN identification information corresponding entity LUN and entity LUN from the LUN relationship list item of local record
Belong to memory node；
When the ownership memory node of the entity LUN is not this memory node, the ownership of Xiang Suoshu entity LUN stores section
Point forwards the I/O request, so that the ownership memory node of the entity LUN submits the I/O request at the entity LUN
Reason；
After the completion of the I/O request processing, the ownership memory node of the entity LUN receives depositing for I/O request to described
Node forward process is stored up as a result, processing result is returned to the application server again by the memory node for receiving I/O request.
Further, the method also includes:
When the ownership memory node of the entity LUN is this memory node, the I/O request is submitted into this memory node
On entity LUN processing；
After the completion of the I/O request processing, processing result is returned to the application server by this memory node.
Further, the memory node is before the I/O request for receiving application server transmission, further includes:
On the memory node create it is corresponding with the entity LUN acts on behalf of LUN, add the entity LUN with it is corresponding
The LUN that acts on behalf of is distributed to the application server on the memory node by the LUN relationship list item for acting on behalf of LUN；
The application server is established to after the connection of the memory node, is recognized and is acted on behalf of the corresponding reality of LUN with described
When body LUN, the entity LUN described in the application server access, the LUN identification information carried in the I/O request is the reality
Body LUN is corresponding to act on behalf of LUN identification information.
Further, the method also includes:
When the application server is no longer needed through the storage node accesses entity LUN, in the memory node
It is upper it is described act on behalf of LUN from application server cancel distribute, delete the entity LUN and the LUN relation table for acting on behalf of LUN
, deletion is described to act on behalf of LUN.
Further,
The LUN relationship list item is used to record the corresponding relationship for acting on behalf of LUN and entity LUN and the ownership of entity LUN is deposited
Store up node.
Further,
The LUN attribute of acting on behalf of is with the entity LUN, so that the multi-path software on the application server is multiple
The LUN that acts on behalf of found on memory node is identified as the same entity LUN.
The application also provides a kind of access mechanism of storage resource, and described device is applied to the storage in more controlled storage systems
On node, more controlled storage systems include multiple memory nodes, which includes:
Acquiring unit, when receiving the I/O request of application server transmission for memory node, according in the I/O request
The LUN identification information of carrying obtained from the LUN relationship list item of local record the corresponding entity LUN of the LUN identification information with
And the ownership memory node of entity LUN；
Retransmission unit, for when the ownership memory node of the entity LUN is not this memory node, Xiang Suoshu entity
The ownership memory node of LUN forwards the I/O request, so that the ownership memory node of the entity LUN submits the I/O request
The entity LUN processing；
Return unit, after the completion of I/O request processing, the ownership memory node of the entity LUN is to the reception
To I/O request memory node forward process as a result, the memory node for receiving I/O request again returns to processing result described in
Application server.
Further, described device further include:
Processing unit, for when the ownership memory node of the entity LUN is this memory node, the I/O request to be mentioned
The entity LUN on this memory node is handed over to handle；After the completion of I/O request processing, described in this memory node returns to processing result
Application server.
Further, described device further include:
Creating unit, for being deposited described before the I/O request that the acquiring unit receives application server transmission
Creation is corresponding with the entity LUN on storage node acts on behalf of LUN, adds the entity LUN and the corresponding LUN relationship for acting on behalf of LUN
The LUN that acts on behalf of is distributed to the application server on the memory node by list item；The application server is established to institute
After the connection for stating memory node, recognizes and act on behalf of the corresponding entity LUN of LUN with described, described in the application server access
When entity LUN, the LUN identification information carried in the I/O request, which is that the entity LUN is corresponding, acts on behalf of LUN identification information.
Further, described device further include:
Unit is deleted, for when the application server is no longer needed through the storage node accesses entity LUN,
The LUN that acts on behalf of is deleted the entity LUN with described and act on behalf of LUN from application server cancellation distribution on the memory node
LUN relationship list item, delete and described act on behalf of LUN.
Further,
The LUN relationship list item is used to record the corresponding relationship for acting on behalf of LUN and entity LUN and the ownership of entity LUN is deposited
Store up node.
Further,
The LUN attribute of acting on behalf of is with the entity LUN, so that the multi-path software on the application server is multiple
The LUN that acts on behalf of found on memory node is identified as the same entity LUN.
In the application it can be seen from above description, the corresponding storage equipment of a memory node, application server pair
The access of entity LUN, the controller number being no longer limited on entity LUN ownership memory node can also be by controlling storage system more
Other storage node accesses in system, to increase the number of paths of application server access entity LUN, on the one hand, increase
Bandwidth, on the other hand, under abnormal conditions, when the path between application server and storage system is abnormal, simply by the presence of
Any paths are reachable, and the business on application server will not interrupt.In addition, when controller is abnormal, as long as entity
There is a controller to operate normally on LUN ownership memory node, that is, can guarantee that application server passes through preconfigured a plurality of visit
Ask the entity LUN on path access ownership memory node.As it can be seen that the application can effectively improve the reliability of storage system, and skill
Art scheme is simple and easy, and the scalability of system is strong.
Detailed description of the invention
Fig. 1 is more controlled storage system schematic diagrames shown in one exemplary embodiment of the application；
Fig. 2 is a kind of access method flow chart of storage resource shown in one exemplary embodiment of the application；
Fig. 3 is that more controlled storage system schematic diagrames after LUN are acted on behalf of in the creation shown in one exemplary embodiment of the application；
Fig. 4 is that the basis of equipment where a kind of access mechanism of storage resource shown in one exemplary embodiment of the application is hard
Part structural schematic diagram；
Fig. 5 is a kind of structural schematic diagram of the access mechanism of storage resource shown in one exemplary embodiment of the application.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
It is only to be not intended to be limiting the application merely for for the purpose of describing particular embodiments in term used in this application.
It is also intended in the application and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not departing from
In the case where the application range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, word as used in this " if " can be construed to " ... when " or
" when ... " or " in response to determination ".
Social now, information system has become the important support of social production ability and enterprise's normal operation, and data are
The foundation stone of information system, business continuance are the guarantees of information system availability, and more and more users' selection saves data
In special storage system.It is relatively high to the reliability requirement of storage system for high-end storage user, and controller is
The core component of storage system completes the key functions such as data transmit-receive, data storage, data protection, the controller of storage system
Number is the important indicator for measuring storage system reliability to the degrees of tolerance of controller failure, front-end access path.
Common more controlled storage systems are dual control storage equipment at present, and a small number of producers also provide four controls storage equipment, when answering
It is simultaneously switched off with all paths between server and storage equipment, alternatively, all controller simultaneous faults in storage equipment
When, business will interrupt.Although expanding storage apparatus internal controller number can constantly promote the reliability of storage equipment, it is limited
In hardware design and software design complexity, technical difficulty is very big, is not easy to realize.
In view of the above-mentioned problems, the embodiment of the present application proposes a kind of access method of storage resource, it is applied to more control storages system
On memory node (i.e. aforementioned storage equipment) in system, this method receives the I/O request of application server transmission in memory node
When, it is corresponding that LUN identification information is obtained from the LUN relationship list item of local record according to the LUN identification information carried in I/O request
Entity LUN and entity LUN ownership memory node.When the ownership memory node of entity LUN is not this memory node, to
The ownership memory node of entity LUN forwards I/O request, so that I/O request is submitted entity LUN by the ownership memory node of entity LUN
Processing.After the completion of I/O request processing, the home node of entity LUN is to the memory node forward process knot for receiving I/O request
Processing result is returned to application server again by fruit, the memory node for receiving I/O request.Wherein, entity LUN is on memory node
There are the LUN of amount of physical memory.
It is the more controlled storage system schematic diagrames of the application referring to Fig. 1.More controlled storage systems include 3 memory nodes, respectively
For NodeA, NodeB and NodeC, each memory node includes 2 controllers (SP1 and SP2).Wherein, it is created on NodeA
It is entity LUN that LUN1, LUN0 and LUN1 are created on LUN0, NodeB.Each memory node is interconnected by private network, for example, with
Too net, FC (Fibre Channel, optical-fibre channel), PCI-E (Peripheral Component Interconnection-
Express, quick peripheral component interconnection) etc., realize the data interaction between memory node.On application server ServerA
Multi-path software is run, LUN0 and LUN1 can be accessed by a plurality of access path (A1, A2, B1, B2, C1, C2).
It referring to fig. 2, is one embodiment flow chart of the access method of the application storage resource, which provides storage
The access process in source is described.
Step 201, when memory node receives the I/O request of application server transmission, according to what is carried in the I/O request
LUN identification information obtains the corresponding entity LUN of the LUN identification information and entity from the LUN relationship list item of local record
The ownership memory node of LUN.
Before the more controlled storage systems of application server access, first have to complete to resource distribution work on more controlled storage systems
Make.Specifically, administrator logs in the administration interface of more controlled storage systems by management equipment, saved according to user demand in each storage
Entity LUN is created on point, and the entity LUN of creation is then distributed to application server.The embodiment of the present application is entity LUN points
When dispensing application server, from memory node distribution configuration command of the management equipment into more controlled storage systems, the configuration order
Middle carrying entity LUN information (for example, LUN0 of NodeA) and routing information.After memory node receives configuration order, at this
Creation is corresponding with entity LUN on memory node acts on behalf of LUN, this acts on behalf of LUN attribute with entity LUN, so that subsequent applications service
The LUN that acts on behalf of found on multiple memory nodes is identified as the same entity LUN by multi-path software by device, this acts on behalf of LUN
It is not take up any memory space；Entity LUN and the corresponding LUN relationship list item for acting on behalf of LUN are added on this memory node, referring to table
1, it is LUN relationship list item example, the LUN relationship list item is for recording the corresponding relationship and entity for acting on behalf of LUN Yu entity LUN
The ownership memory node of LUN；LUN will be acted on behalf of on this memory node and distributes to application server, i.e. configuration application server can
With the path of access agent LUN.
Table 1
Table 1 is a LUN relationship list item on memory node NodeB, which shows to create an agency on NodeB
LUN (VB-LUN0), the VB-LUN0 are that the entity LUN (LUN0) of direction NodeA of the configuration on NodeB acts on behalf of LUN.
Administrator logs in application server after completing to resource distribution work on more controlled storage systems, establishes application clothes
The connection of business device each memory node into more controlled storage systems, application server can recognize entity corresponding with LUN is acted on behalf of
LUN.Specifically, the embodiment of the present application respectively the creation on different memory nodes be directed toward same entity LUN act on behalf of LUN, due to
The attribute that LUN inherits entity LUN is acted on behalf of, therefore, the multiple attributes for acting on behalf of LUN for being directed toward same entity LUN are identical, by multipath
Software is identified as an entity LUN, and the upper layer application for being presented to application server uses.That is, being on application server
An existing entity LUN has a plurality of accessible path to entity LUN, corresponding multiple memory nodes.
As application server access entity LUN, road is selected according to network condition, path status etc. by multi-path software
Diameter issues I/O request, and LUN identification information is carried in I/O request.LUN identification information in the embodiment of the present application is entity LUN
It is corresponding to act on behalf of LUN identification information.When the memory node being located on the path receives I/O request, carried according in I/O request
LUN identification information the corresponding entity LUN and entity LUN of LUN identification information is obtained from the LUN relationship list item of local record
Ownership memory node.
Step 202, when the ownership memory node of the entity LUN is not this memory node, Xiang Suoshu entity LUN's returns
Belong to memory node and forward the I/O request, so that the I/O request is submitted the reality by the ownership memory node of the entity LUN
Body LUN processing.
Step 203, after the completion of the I/O request processing, the ownership memory node of the entity LUN receives IO to described
The memory node forward process of request is as a result, processing result is returned to the application again by the memory node for receiving I/O request
Server.
When the ownership memory node of entity LUN is not this memory node, illustrate the application server entity LUN to be accessed
Not on this memory node, then I/O request is transmitted to the ownership memory node of entity LUN by the memory node for receiving I/O request,
The entity LUN of own node is submitted to handle I/O request by the ownership memory node of entity LUN.After completing I/O request processing,
From the ownership memory node of entity LUN to the memory node forward process for receiving I/O request as a result, depositing by reception I/O request again
It stores up node and processing result is returned into application server.That is, processing result is returned along I/O request path.
When the ownership memory node of entity LUN is this memory node, the entity LUN for illustrating that application server to be accessed exists
On this memory node, I/O request is directly submitted into the processing of the entity LUN on this memory node, and complete in I/O request processing
Afterwards, processing result is returned into application server by this memory node.
In addition, when application server is no longer needed through some storage node accesses entity LUN, it can be in the storage section
The corresponding LUN that acts on behalf of of entity LUN is deleted the entity LUN with described and act on behalf of LUN from application server cancellation distribution on point
LUN relationship list item, then delete it is described act on behalf of LUN, to reduce the consumption of system resource.
It can be seen from the above description that access of the application server to a certain entity LUN, is no longer limited to entity LUN and returns
Belong to the path on memory node, it can be by the path access on other memory nodes in more controlled storage systems, to increase visit
It asks the way the quantity and bandwidth of diameter.Even if the path that entity LUN belongs on memory node is all off, on the ownership memory node
Entity LUN can be equally accessed.Certainly, this requires the controller normal operation on ownership memory node, for controlling storage more
Node (Fig. 1 show dual control memory node) will at least guarantee a controller (SP1 or SP2) normal operation, so as to connect
The I/O request for receiving other memory node forwardings is handled.As it can be seen that the scalability of technical scheme is extremely strong (can be connected
It is N number of memory node, unrestricted on the value principle of N), do not had in technology realization it is highly difficult, it is simple and easy, improve and deposit
The reliability of storage system.
Now still by taking Fig. 1 as an example, storage resource access process is discussed in detail.
Assuming that user demand are as follows: ServerA accesses LUN0 by NodeA, NodeB, NodeC, and LUN0 is located on NodeA,
Capacity is 100GB；LUN1 is accessed by NodeA, NodeB, LUN1 is located on NodeB, capacity 200GB.
Firstly, configuration resource.In RAID (Redundant Array of Independent Disks, the independence of NodeA
Redundant array of inexpensive disk) on create LUN0, capacity 100GB；LUN1, capacity 200GB are created on the RAID of NodeB.
Then, resource allocation is taken server to application.Administrator is by management equipment under NodeA, NodeB, NodeC
Send out configuration order.
For LUN0 is distributed to ServerA on NodeB, NodeB receives the configuration order that management equipment issues, should
Entity LUN information (LUN0 of NodeA) and routing information are carried in configuration order；NodeB obtains needs from configuration order
The entity LUN information of configuration, create LUN0 acts on behalf of LUN VB-LUN0, which is directed toward the LUN0 of NodeA, and inherits
The attribute of LUN0, NodeB is in the LUN relationship list item for locally adding LUN0 and VB-LUN0, referring to table 1；Then, NodeB is from configuration
VB-LUN0 is distributed to application server by acquisite approachs information in order, and path incidence relation is referring to table 2.
Table 2
From table 2 it can be seen that being associated with two paths on NodeB for VB-LUN0 (LUN0 for being equivalent to NodeA):
SP2 → VB-LUN0 of SP1 → VB-LUN0 of ServerA → NodeB, ServerA → NodeB pass through path shown in FIG. 1
The accessible VB-LUN0 of B1 and B2, and then access the LUN0 of NodeA.
Similarly, creation and distribution that LUN is acted on behalf of on all memory nodes are completed according to user demand, referring to Fig. 3.It configures
Cheng Hou, LUN relationship list item and path incidence relation on each memory node are respectively as follows:
Table 3
Table 4
Table 3 is the LUN relationship list item on NodeA；Table 4 is the path incidence relation on NodeA.
Table 5
Table 6
Table 5 is the LUN relationship list item on NodeB；Table 6 is the path incidence relation on NodeB.
Table 7
Table 8
Table 7 is the LUN relationship list item on NodeC；Table 8 is the path incidence relation on NodeC.
It completes to postpone matching for storage system, administrator logs in ServerA, establishes on ServerA to each memory node and controls
The connection of device processed, then the multi-path software on ServerA can recognize entity LUN under each path.
By taking LUN0 as an example, since the attribute of VA-LUN0, VB-LUN0, VC-LUN0 are identical, multi-path software identification
ServerA upper layer application is presented to for the same LUN (LUN0).It can be seen that on ServerA from table 4, table 6, table 8 and Fig. 3
Corresponding 6 access path of the LUN0 of presentation, i.e. ServerA by each controller on NodeA, NodeB, NodeC (SP1,
SP2 it) may have access to LUN0.
Complete above-mentioned storage-node side and application server side with postponing, start storage resource access, below with
ServerA is accessed for LUN0.
It is assumed that SP2 respective path (path B2 shown in Fig. 3) issues I/O request, NodeB on multi-path software selection NodeB
SP2 receive the I/O request, in the I/O request carry act on behalf of LUN identification VB-LUN0.NodeB is looked into according to LUN identification VB-LUN0
Table 5 is ask, determines that the corresponding entity LUN of VB-LUN0 is LUN0, the ownership memory node of LUN0 is NodeA, i.e. entity LUN does not exist
On this node, therefore, I/O request is transmitted to by NodeA by the private network between memory node, NodeA submits to I/O request
LUN0 processing.After the completion of processing, processing result is returned to SP2 on NodeB, NodeB returns to ServerA along path B2.
It is assumed that SP1 respective path (path A1 shown in Fig. 3) issues I/O request, NodeA on multi-path software selection NodeA
SP1 receive the I/O request, in the I/O request carry act on behalf of LUN identification VA-LUN0.NodeA is looked into according to LUN identification VA-LUN0
Table 3 is ask, determines that the corresponding entity LUN of VA-LUN0 is LUN0, the ownership memory node of LUN0 is NodeA, i.e. entity LUN is at this
On node, therefore, I/O request is submitted into the processing of the LUN0 on this node, after the completion of processing, processing result is returned along path A1
Back to ServerA.
It is located on NodeA as it can be seen that ServerA may have access to by the path on memory nodes different in more controlled storage systems
LUN0, if there is controller to operate normally (SP1 or SP2) on NodeA, and not all path (A1, A2, B1, B2,
C1, C2) all disconnect, the access to LUN0 can be realized, this improves the reliability of more controlled storage systems, and access path
Quantity and bandwidth have increase, improve the performance of storage system.
Corresponding with the embodiment of aforementioned storage resource access method, present invention also provides storage resource access mechanisms
Embodiment.
The embodiment of the application storage resource access mechanism can be applied on memory node.Installation practice can pass through
Software realization can also be realized by way of hardware or software and hardware combining.Taking software implementation as an example, it anticipates as a logic
Device in justice is that corresponding computer program instructions are formed in the processor run memory by equipment where it.From
For hardware view, as shown in figure 4, for a kind of hardware structure diagram of the application storage resource access mechanism place equipment, in addition to
Except processor shown in Fig. 4, network interface and memory, the equipment in embodiment where device is generally according to the equipment
Actual functional capability, can also include other hardware, this is repeated no more.
Referring to FIG. 5, for the structural schematic diagram of the storage resource access mechanism in the application one embodiment.Storage money
Source access mechanism includes acquiring unit 501, retransmission unit 502 and return unit 503, in which:
Acquiring unit 501, when receiving the I/O request of application server transmission for memory node, according to the I/O request
The LUN identification information of middle carrying obtains the corresponding entity LUN of the LUN identification information from the LUN relationship list item of local record
And the ownership memory node of entity LUN；
Retransmission unit 502, for when the ownership memory node of the entity LUN is not this memory node, to the reality
The ownership memory node of body LUN forwards the I/O request, so that the ownership memory node of the entity LUN proposes the I/O request
The entity LUN is handed over to handle；
Return unit 503, after the completion of I/O request processing, the ownership memory node of the entity LUN is to described
The memory node forward process of I/O request is received as a result, the memory node for receiving I/O request again returns to processing result
The application server.
Further, described device further include:
Processing unit, for when the ownership memory node of the entity LUN is this memory node, the I/O request to be mentioned
The entity LUN on this memory node is handed over to handle；After the completion of I/O request processing, described in this memory node returns to processing result
Application server.
Further, described device further include:
Creating unit, for the acquiring unit 501 receive application server transmission I/O request before, described
Creation is corresponding with the entity LUN on memory node acts on behalf of LUN, adds the entity LUN and the corresponding LUN for acting on behalf of LUN is closed
It is list item, the LUN that acts on behalf of is distributed to the application server on the memory node；The application server foundation is arrived
After the connection of the memory node, recognizes and act on behalf of the corresponding entity LUN of LUN with described, when the application server access institute
When stating entity LUN, the LUN identification information carried in the I/O request, which is that the entity LUN is corresponding, acts on behalf of LUN identification information.
Further, described device further include:
Unit is deleted, for when the application server is no longer needed through the storage node accesses entity LUN,
The LUN that acts on behalf of is deleted the entity LUN with described and act on behalf of LUN from application server cancellation distribution on the memory node
LUN relationship list item, delete and described act on behalf of LUN.
Further,
The LUN relationship list item is used to record the corresponding relationship for acting on behalf of LUN and entity LUN and the ownership of entity LUN is deposited
Store up node.
Further,
The LUN attribute of acting on behalf of is with the entity LUN, so that the multi-path software on the application server is multiple
The LUN that acts on behalf of found on memory node is identified as the same entity LUN.
The function of each unit and the realization process of effect are specifically detailed in the above method and correspond to step in above-mentioned apparatus
Realization process, details are not described herein.
For device embodiment, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
The purpose for needing to select some or all of the modules therein to realize application scheme.Those of ordinary skill in the art are not paying
Out in the case where creative work, it can understand and implement.
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the application protection.
Claims (10)
1. a kind of access method of storage resource, which is characterized in that the method is applied to the storage section in more controlled storage systems
On point, more controlled storage systems include multiple memory nodes, this method comprises:
When memory node receives the I/O request of application server transmission, according to the LUN identification information carried in the I/O request
The ownership that the LUN identification information corresponding entity LUN and entity LUN is obtained from the LUN relationship list item of local record is deposited
Store up node, wherein the LUN identification information be the memory node be pre-created corresponding with the entity LUN act on behalf of LUN
Identification information, the LUN that acts on behalf of distributes to the application server by the memory node；
When the ownership memory node of the entity LUN is not this memory node, the ownership memory node of Xiang Suoshu entity LUN turns
Send out I/O request described, so that the I/O request is submitted the entity LUN to handle by the ownership memory node of the entity LUN；
After the completion of I/O request processing, the ownership memory node of the entity LUN is to the storage section for receiving I/O request
Point forward process is as a result, processing result is returned to the application server again by the memory node for receiving I/O request.
2. the method as described in claim 1, which is characterized in that the method also includes:
When the ownership memory node of the entity LUN is this memory node, the I/O request is submitted on this memory node
Entity LUN processing；
After the completion of the I/O request processing, processing result is returned to the application server by this memory node.
3. the method as described in claim 1, which is characterized in that the method also includes:
When the application server is no longer needed through the storage node accesses entity LUN, the handle on the memory node
The LUN that acts on behalf of is distributed from application server cancellation, is deleted the entity LUN and the LUN relationship list item for acting on behalf of LUN, is deleted
LUN is acted on behalf of except described.
4. the method as described in claim 1, it is characterised in that:
The LUN relationship list item is used to record the corresponding relationship for acting on behalf of LUN and entity LUN and the ownership storage section of entity LUN
Point.
5. the method as described in claim 1, it is characterised in that:
The LUN attribute of acting on behalf of is with the entity LUN, so that the multi-path software on the application server is in multiple storages
The LUN that acts on behalf of found on node is identified as the same entity LUN.
6. a kind of access mechanism of storage resource, which is characterized in that described device is applied to the storage section in more controlled storage systems
On point, more controlled storage systems include multiple memory nodes, which includes:
Acquiring unit carries when receiving the I/O request of application server transmission for memory node according in the I/O request
LUN identification information the corresponding entity LUN of the LUN identification information and reality are obtained from the LUN relationship list item of local record
The ownership memory node of body LUN, wherein the LUN identification information is that the memory node is being pre-created with the entity LUN
The LUN that acts on behalf of is distributed to the application server by the corresponding identification information for acting on behalf of LUN, the memory node；
Retransmission unit, for when the ownership memory node of the entity LUN is not this memory node, Xiang Suoshu entity LUN's
Belong to memory node and forward the I/O request, so that the ownership memory node of the entity LUN will be described in I/O request submission
Entity LUN processing；
Return unit, after the completion of I/O request processing, the ownership memory node of the entity LUN receives IO to described
The memory node forward process of request is as a result, processing result is returned to the application again by the memory node for receiving I/O request
Server.
7. device as claimed in claim 6, which is characterized in that described device further include:
Processing unit, for when the ownership memory node of the entity LUN is this memory node, the I/O request to be submitted this
Entity LUN processing on memory node；After the completion of the I/O request processing, processing result is returned to the application by this memory node
Server.
8. device as claimed in claim 6, which is characterized in that described device further include:
Unit is deleted, for when the application server is no longer needed through the storage node accesses entity LUN, described
The LUN that acts on behalf of is deleted the entity LUN and the LUN for acting on behalf of LUN from application server cancellation distribution on memory node
Relationship list item, deletion is described to act on behalf of LUN.
9. device as claimed in claim 6, it is characterised in that:
The LUN relationship list item is used to record the corresponding relationship for acting on behalf of LUN and entity LUN and the ownership storage section of entity LUN
Point.
10. device as claimed in claim 6, it is characterised in that:
The LUN attribute of acting on behalf of is with the entity LUN, so that the multi-path software on the application server is in multiple storages
The LUN that acts on behalf of found on node is identified as the same entity LUN.
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| CN106446197B (en) * | 2016-09-30 | 2019-11-19 | 华为数字技术（成都）有限公司 | A kind of date storage method, apparatus and system |
| CN106331166B (en) * | 2016-10-11 | 2019-09-06 | 杭州宏杉科技股份有限公司 | A kind of access method and device of storage resource |
| CN107171865A (en) * | 2017-06-30 | 2017-09-15 | 郑州云海信息技术有限公司 | A kind of multinode storage system and LUN ownernode switching methods |
| CN107491270B (en) * | 2017-08-23 | 2020-06-23 | 杭州宏杉科技股份有限公司 | Resource access method and device of multi-control storage system |
| CN107577425A (en) * | 2017-08-23 | 2018-01-12 | 杭州宏杉科技股份有限公司 | A kind of data migration method and device |
| CN113703676B (en) * | 2021-07-30 | 2023-08-04 | 苏州浪潮智能科技有限公司 | Calling method, device, equipment and medium for double live volumes |
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