CN108063737A - A kind of FCoE storage area networks read request processing method and system - Google Patents
A kind of FCoE storage area networks read request processing method and system Download PDFInfo
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- CN108063737A CN108063737A CN201711178994.6A CN201711178994A CN108063737A CN 108063737 A CN108063737 A CN 108063737A CN 201711178994 A CN201711178994 A CN 201711178994A CN 108063737 A CN108063737 A CN 108063737A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/35—Switches specially adapted for specific applications
- H04L49/356—Switches specially adapted for specific applications for storage area networks
- H04L49/357—Fibre channel switches
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45579—I/O management, e.g. providing access to device drivers or storage
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45595—Network integration; Enabling network access in virtual machine instances
Abstract
The invention discloses a kind of FCoE storage area networks read request processing method and system, including：When the network bag of reception is FCoE read request network bags,It checks in Exchange ID mapping tables with the presence or absence of the physical network card Exchange ID being not used by,If in the presence of the physical network card Exchange ID being not used by,FCoE network bag Central Plains Exchange ID are recorded in Exchange ID mapping tables,And replace the Exchange id fields in FCoE network bag with the physical network card Exchange ID that will be not used by,When the network bag of reception is that FCoE runs through network bag,If the FCoE runs through network bag and is performed by the mode of DDP I/O,Check Exchange ID mapping tables,The FCoE is run through into Exchange id fields in network bag and replaces with former Exchange ID.When accessing FCoE storage area networks by Microsoft Loopback Adapter the invention enables virtual machine, the DDP I/O functions of physical network card can be used.
Description
Technical field
The present invention relates to computer memory technical field, more particularly, to a kind of Ethernet optical-fibre channel (Fiber
Channel over Ethernet, FCoE) storage area network read request processing method and system.
Background technology
Now with the development of Internet service, data center user is higher and higher to the demand of storage area network, starts
Dispose the storage area network based on FCoE.Virtual machine writes data into the storage based on FCoE storage area networks by Microsoft Loopback Adapter
System reads data from the storage system based on FCoE storage area networks.With multi-core computer server, high speed storing
The development of equipment and high-speed network technology, when virtual machine accesses storage system by Microsoft Loopback Adapter, I/O process performances are increasingly heavier
It will.I/O processing delay and processing throughput are two leading indicators of I/O process performances.
Existing Microsoft Loopback Adapter can not share Direct Data Placement I/O functions (the abbreviation DDP of physical network card
I/O) so that when performing read request, throughput and delay performance be not high, and consumes very big CPU, largely effects under virtualized environment
The performance of whole system.
The content of the invention
The defects of for the prior art, it is an object of the invention to solve existing Microsoft Loopback Adapter not sharing physical network card
DDP I/O functions so that when performing read request, throughput and delay performance be not high, and consumes very big CPU, largely effects on virtual
The technical issues of changing the performance of whole system under environment.
To achieve the above object, in a first aspect, the present invention provides a kind of FCoE storage area networks read request processing method, bag
It includes：
Step (1) when virtual switch is toward transmission FCoE read request network bags on network, performs step (2)；When virtual
When interchanger receives FCoE from network and runs through network bag, step (4) is performed, the virtual switch includes Exchange
ID mapping tables, the Exchange ID mapping tables are used to record physical network card Exchange ID and Microsoft Loopback Adapter Exchange
ID, physical network card Exchange ID refer to physical network card for performing the Exchange ID of the FCoE network bag of DDP I/O, virtually
Network interface card Exchange ID refer to FCoE network bag on virtual machine corresponding Exchange ID, and Exchange ID refer in FCP agreements
In, the field managed by FCoE protocol stacks that each I/O is allocated, DDP I/O refer to when performing read request, read data by physics
Network interface card is transferred to the corresponding region of memory of read request；
Step (2) checks the physical network card Exchange ID that whether there is in Exchange ID mapping tables and be not used by,
If in the presence of the physical network card Exchange ID being not used by, FCoE network bag Central Plains Exchange ID are recorded in
In the Microsoft Loopback Adapter Exchange ID of Exchange ID mapping tables, and with the physical network card Exchange ID that will be not used by
The ExchangeID fields in FCoE network bag are replaced, perform step (3)；If being not present, step (3) is performed；
Step (3), physical network card send the FCoE read request network bags to network；
Step (4) if the FCoE runs through network bag and performed by the mode of DDP I/O, performs step (5)；Otherwise perform
Step (6)；
Step (5) checks Exchange ID mapping tables, which is run through Exchange id fields in network bag replaces
Former Exchange ID are changed to, perform step (6)；
The FCoE is run through network and forwards a packet to virtual machine by step (6).
Optionally, the Exchange ID mapping tables are for when performing DDP I/O, record to carry out the FCoE nets of self virtualizing machine
The former Exchange id fields of network bag, new Exchange id fields value, corresponding read request region of memory and physical network card.
Optionally, by the Exchange ID mapping tables can toward send on network FCoE read request network bags with
When reception FCoE runs through network bag from network, DDP I/O and non-DDPI/O is distinguished so that Microsoft Loopback Adapter possesses on virtual machine
DDP I/O offloading functions.
Second aspect, the present invention provide a kind of FCoE storage area networks read request processing system, including：It is virtual machine, virtual
Network interface card, virtual machine interchanger and physical network card；
The Microsoft Loopback Adapter, for from virtual machine network bag to be passed to virtual switch or by network bag from virtual switch
Machine passes to virtual machine；
The virtual switch is used to, when it is toward transmission FCoE read request network bags on network, check Exchange ID
With the presence or absence of the physical network card Exchange ID being not used by mapping table, if in the presence of the physical network card being not used by
FCoE network bag Central Plains Exchange ID are recorded in the Microsoft Loopback Adapter of Exchange ID mapping tables by Exchange ID
In Exchange ID, and the Exchange ID words in FCoE network bag are replaced with the physics Exchange ID that will be not used by
Section；The virtual switch includes Exchange ID mapping tables, and the Exchange ID mapping tables are used to record physical network card
Exchange ID and Microsoft Loopback Adapter Exchange ID, physical network card Exchange ID refer to physical network card for performing DDP I/O
FCoE network bag Exchange ID, it is corresponding that Microsoft Loopback Adapter Exchange ID refer to FCoE network bag on virtual machine
Exchange ID, Exchange ID refer in FCP agreements, the field managed by FCoE protocol stacks that each I/O is allocated,
DDP I/O refer to when performing read request, read data and are transferred to the corresponding region of memory of read request by physical network card；
The virtual switch is used for when the network bag that it is received from network is that FCoE runs through network bag, if should
FCoE runs through network bag and is performed by the mode of DDP I/O, checks Exchange ID mapping tables, which is run through network
Exchange id fields replace with former ExchangeID in bag, which is run through network forwards a packet to virtual machine；Otherwise it is straight
It connects and the FCoE is run through into network forwards a packet to virtual machine；
The physical network card runs through networking for sending FCoE read request network bags to network or FCoE being received from network
Network bag.
Optionally, the Exchange ID mapping tables are for when performing DDP I/O, record to carry out the FCoE nets of self virtualizing machine
The former Exchange id fields of network bag, new Exchange id fields value, corresponding read request region of memory and physical network card.
Optionally, by the Exchange ID mapping tables can toward send on network FCoE read request network bags with
When reception FCoE runs through network bag from network, DDP I/O and non-DDPI/O is distinguished so that Microsoft Loopback Adapter possesses on virtual machine
DDP I/O offloading functions.
In general, by the above technical scheme conceived by the present invention compared with prior art, have below beneficial to effect
Fruit：
Pass through Exchange ID mapping mechanisms provided by the invention so that virtual machine accesses FCoE by Microsoft Loopback Adapter and deposits
When storing up regional network, the DDP I/O functions of physical network card can be used, the throughput performance for performing read request greatly improves, and subtracts
Small processing delay and CPU overhead.
Description of the drawings
Fig. 1 is that Exchange ID mapping mechanisms virtual machine under virtualized environment is accessed by Microsoft Loopback Adapter in the present invention
The configuration diagram of FCoE network；
Fig. 2 be in embodiment Exchange ID mapping mechanisms to the processing procedure schematic diagram of FCoE read request network bags；
Fig. 3 is the processing procedure schematic diagram that Exchange ID mapping mechanisms run through FCoE network bag in embodiment.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Conflict is not formed each other to can be combined with each other.
In order to be clearly understood from the present invention, term used in present invention is explained at this：
Storage area network：For transmitting the network of data between computer system and storage system.
FCoE：Ethernet fiber channel protocol transmits the standard of FCP agreements over ethernet.
FCoE read request network bags：When referring to the application execution read request run on virtual machine, the FCoE forms of transmission
FCP_CMND frames.
FCoE runs through network bag：When referring to the application execution read request run on virtual machine, the FCoE forms that receive
FCP_RSP frames.
Protocol stack (protocol stack)：Refer to software processing and the execution of computer network protocol.
Read request：Upper layer software (applications) submits to the read request of generic block layer.
Exchange ID：In FCP agreements, each I/O can be allocated a word uniquely managed by FCoE protocol stacks
Section Exchange ID, including OX_ID and RX_ID.OX_ID is by computer server management；RX_ID is by system management memory.This
Apply for that the Exchange ID referred to refer in particular to OX_ID.
DDP I/O：Direct Data Placement I/O refer to when performing read request, read data by physical network card
DMA is transferred to the corresponding region of memory of read request.
The present invention accesses FCoE storage area networks for virtual machine by Microsoft Loopback Adapter, proposes a kind of read request processing side
Method, its object is to enable existing Microsoft Loopback Adapter that FCoE DDP unloadings to be supported to improve the throughput and retardance of read request
Energy.
To achieve the above object, the present invention provides a kind of Exchange ID mapping mechanisms, is mapped including Exchange ID
Table and Exchange ID mapping treatment methods.
It is an aspect of this invention to provide that provide Exchange ID mapping table structures.Exchange ID mapping table item numbers
Amount, it is related with physical network card.Exchange ID mapping table elementary items, as shown in table 1：
Table 1
Wherein, physical network card Exchange ID refer to physical network card for performing the FCoE network bag of DDP I/O
Exchange ID.Microsoft Loopback Adapter Exchange ID refer to the corresponding Exchange ID of FCoE network bag on virtual machine.Physical network card
Refer to the corresponding physical network card for being used to perform DDP I/O on host.Read request region of memory refers to the corresponding memory field of read request
Domain.
Shown in Fig. 1, it is virtual to be that Exchange ID mapping mechanisms provided by the invention virtual machine under virtualized environment passes through
The location of in the framework of network interface card access FCoE network, under normal circumstances, virtual machine is toward sending FCoE read request nets on network
During network bag, network bag successively need to be via Microsoft Loopback Adapter front-end driven, the driving of Microsoft Loopback Adapter rear end, virtual switch routing, physics
Trawl performance；Virtual machine received from network FCoE run through request network bag when, network bag need to drive successively via physical network card
Dynamic, virtual switch routing, the driving of Microsoft Loopback Adapter rear end, Microsoft Loopback Adapter front-end driven, virtual switch road provided by the invention
Exchange ID mapping mechanisms are added in, so using the present invention, virtual machine is toward sending FCoE read request networks on network
Bao Shi, network bag need to drive successively via Microsoft Loopback Adapter front-end driven, Microsoft Loopback Adapter rear end, virtual switch is route,
Exchange ID mappings processing, physical network card driving；Virtual machine received from network FCoE run through request network bag when, net
Network bag need to drive successively via physical network card, virtual switch routing, Exchange ID mappings processing, Microsoft Loopback Adapter rear end drive
Dynamic, Microsoft Loopback Adapter front-end driven.
It is another aspect of this invention to provide that provide a kind of FCoE storage area networks read request processing method, specific steps
It is as follows：
(1) when empty machine interchanger sends FCoE read request network bags to network, step (2) is performed；Work as virtual switch
When the network bag received from network is that FCoE runs through network bag, step (4) is performed.
(2) check with the presence or absence of the Exchange ID that are not used by Exchange ID mapping tables, if in the presence of not made
FCoE network bag Central Plains Exchange ID are recorded in Exchange ID mapping tables by Exchange ID, and with will
The Exchange ID being not used by replace the Exchange id fields in FCoE network bag, perform step (3)；If being not present,
Perform step (3)；
For the Exchange ID for performing DDP I/O, DDP I/O accelerate read request.
(3) physical network card sends the FCoE read request network bags to network.
(4) if the FCoE runs through network bag and performed by the mode of DDP ID, step (5) is performed；Otherwise step is performed
(6)。
(5) Exchange ID mapping tables are checked, which is run through ExchangeID fields in network bag replaces with original
Exchange ID perform step (6).
(6) FCoE is run through into network and forwards a packet to virtual machine.
Fig. 2 illustrates processing procedure of the Exchange ID mapping mechanisms to FCoE read request network bags, and specific steps are such as
Under：
(11) check with the presence or absence of the Exchange ID that are not used by Exchange ID mapping tables, if in the presence of not made
Exchange ID perform step (12)；Otherwise, step (13) is performed；
(12) Exchange id fields in the FCoE network bag are recorded in Exchange ID mapping tables, and with will not
The Exchange ID used replace the Exchange id fields in FCoE network bag, perform step (13)；
(13) physical network card sends the FCoE read request network bags.
Fig. 3 illustrates the processing procedure that Exchange ID mapping mechanisms run through FCoE request network bag, specific steps
It is as follows：
(21) if the FCoE is run through network bag and performed in a manner of DDP I/O, step (22) is performed；Otherwise step is performed
(23)；
(22) Exchange ID mapping tables are checked, which is run through ExchangeID fields in network bag replaces with
Former Exchange ID perform step (23)；
(23) FCoE is run through into network and forwards a packet to virtual machine.
It should be noted that a kind of FCoE storage area networks read request processing system provided by the invention is as shown in Figure 1, bag
It includes：Virtual machine, Microsoft Loopback Adapter, virtual machine interchanger and physical network card；
Microsoft Loopback Adapter, for network bag to be passed to virtual switch from virtual machine or passes network bag from virtual switch
Pass virtual machine.
Virtual switch is used to, when it is toward transmission FCoE read request network bags on network, check that Exchange ID map
With the presence or absence of the physical network card Exchange ID being not used by table, if in the presence of the physical network card Exchange being not used by
FCoE network bag Central Plains Exchange ID are recorded in the Microsoft Loopback Adapter Exchange ID of Exchange ID mapping tables by ID
In, and replace the Exchange id fields in FCoE network bag with the physical network card Exchange ID that will be not used by；Virtually
Interchanger includes Exchange ID mapping tables, and the Exchange ID mapping tables are used to record physical network card Exchange ID
Refer to physical network card with Microsoft Loopback Adapter Exchange ID, physical network card Exchange ID for performing the FCoE network of DDP I/O
The Exchange ID of bag, Microsoft Loopback Adapter Exchange ID refer to the corresponding Exchange ID of FCoE network bag on virtual machine,
Exchange ID refer in FCP agreements, the field managed by FCoE protocol stacks that each I/O is allocated, and DDP I/O, which refer to, to be held
During row read request, read data and the corresponding region of memory of read request is transferred to by physical network card.
Virtual machine interchanger is used for when it receives FCoE from network and runs through network bag, if the FCoE runs through network
Bag is performed by the mode of DDP I/O, checks Exchange ID mapping tables, which is run through Exchange ID in network bag
Field replaces with former Exchange ID, which is run through network forwards a packet to virtual machine；Otherwise directly the FCoE is run through
Virtual machine is forwarded a packet into network；
Physical network card is used to send FCoE read request network bags to network or receive FCoE from network to run through network bag.
Optionally, Exchange ID mapping tables are for when performing DDP I/O, record to carry out the FCoE network bag of self virtualizing machine
Former Exchange id fields, new Exchange id fields value, corresponding read request region of memory and physical network card.
Optionally, FCoE read request network bags can sent with receiving FCoE by the Exchange ID mapping tables
When running through network bag, DDP I/O and non-DDP I/O are distinguished so that Microsoft Loopback Adapter possesses DDP I/O unloading work(on virtual machine
Energy.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., should all include
Within protection scope of the present invention.
Claims (6)
1. a kind of FCoE storage area networks read request processing method, which is characterized in that including：
Step (1) when virtual switch sends FCoE read request network bags toward network, performs step (2)；Work as virtual switch
When the FCoE that reception carrys out automatic network runs through network bag, step (4) is performed；
The virtual switch includes Exchange ID mapping tables, and the Exchange ID mapping tables are used to record physical network card
Exchange ID and Microsoft Loopback Adapter Exchange ID, physical network card ExchangeID refer to physical network card for performing DDP I/O
FCoE network bag Exchange ID, it is corresponding that Microsoft Loopback Adapter Exchange ID refer to FCoE network bag on virtual machine
Exchange ID, Exchange ID refer in FCP agreements, the field managed by FCoE protocol stacks that each I/O is allocated,
DDP I/O refer to when performing read request, read data and are transferred to the corresponding region of memory of read request by physical network card；
Step (2) is checked with the presence or absence of the physical network card Exchange ID being not used by Exchange ID mapping tables, if depositing
In the physical network card Exchange ID being not used by, FCoE network bag Central Plains Exchange ID are recorded in Exchange
In the Microsoft Loopback Adapter Exchange ID of ID mapping tables, and FCoE nets are replaced with the physical network card Exchange ID that will be not used by
ExchangeID fields in network bag perform step (3)；If being not present, step (3) is performed；
Step (3), physical network card send the FCoE read request network bags to network；
Step (4) if the FCoE runs through network bag and performed by the mode of DDP I/O, performs step (5)；Otherwise step is performed
(6)；
Step (5) checks Exchange ID mapping tables, which is run through Exchange id fields in network bag replaces with
Former Exchange ID perform step (6)；
The FCoE is run through network and forwards a packet to virtual machine by step (6).
2. FCoE storage area networks read request processing method according to claim 1, which is characterized in that the Exchange
For ID mapping tables for when performing DDP I/O, record carrys out the former Exchange id fields, new of the FCoE network bag of self virtualizing machine
Exchange id fields value, corresponding read request region of memory and physical network card.
3. FCoE storage area networks read request processing method according to claim 1, which is characterized in that by described
Exchange ID mapping tables can run through networking sending FCoE read request network bags toward on network with receiving FCoE from network
During network bag, DDP I/O and non-DDP I/O are distinguished so that Microsoft Loopback Adapter possesses DDP I/O offloading functions on virtual machine.
4. a kind of FCoE storage area networks read request processing system, which is characterized in that including：Virtual machine, Microsoft Loopback Adapter, virtual machine
Interchanger and physical network card；
The Microsoft Loopback Adapter, for network bag to be passed to virtual switch from virtual machine or passes network bag from virtual switch
Pass virtual machine；
The virtual machine interchanger is used to, when it is toward transmission FCoE read request network bags on network, check that Exchange ID reflect
With the presence or absence of the physical network card Exchange ID being not used by firing table, if in the presence of the physical network card Exchange being not used by
FCoE network bag Central Plains Exchange ID are recorded in the Microsoft Loopback Adapter Exchange ID of Exchange ID mapping tables by ID
In, and replace the Exchange id fields in FCoE network bag with the physical network card Exchange ID that will be not used by；It is described
Virtual switch includes Exchange ID mapping tables, and the Exchange ID mapping tables are used to record physical network card Exchange
ID and Microsoft Loopback Adapter Exchange ID, physical network card Exchange ID refers to physical network card for performing the FCoE nets of DDP I/O
The Exchange ID of network bag, Microsoft Loopback Adapter Exchange ID refer to the corresponding Exchange ID of FCoE network bag on virtual machine,
Exchange ID refer in FCP agreements, the field managed by FCoE protocol stacks that each I/O is allocated, and DDP I/O, which refer to, to be held
During row read request, read data and the corresponding region of memory of read request is transferred to by physical network card；
The virtual switch is used for when it receives FCoE from network and runs through network bag, if the FCoE runs through network bag
It is performed by the mode of DDP I/O, checks Exchange ID mapping tables, which is run through into Exchange ID words in network bag
Section replaces with former Exchange ID, which is run through network forwards a packet to virtual machine；Otherwise directly the FCoE is run through
Network forwards a packet to virtual machine；
The physical network card runs through network bag for sending FCoE read request network bags to network or receiving FCoE from network.
5. FCoE storage area networks read request processing system according to claim 4, which is characterized in that the Exchange
For ID mapping tables for when performing DDP I/O, record carrys out the former Exchange id fields, new of the FCoE network bag of self virtualizing machine
Exchange id fields value, corresponding read request region of memory and physical network card.
6. FCoE storage area networks read request processing system according to claim 4, which is characterized in that by described
Exchange ID mapping tables can run through networking sending FCoE read request network bags toward on network with receiving FCoE from network
During network bag, DDP I/O and non-DDP I/O are distinguished so that Microsoft Loopback Adapter possesses DDP I/O offloading functions on virtual machine.
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