CN107483520A - A kind of method and apparatus of network attached storage instance processes - Google Patents

A kind of method and apparatus of network attached storage instance processes Download PDF

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Publication number
CN107483520A
CN107483520A CN201610404400.8A CN201610404400A CN107483520A CN 107483520 A CN107483520 A CN 107483520A CN 201610404400 A CN201610404400 A CN 201610404400A CN 107483520 A CN107483520 A CN 107483520A
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China
Prior art keywords
network
file system
proprietary
system instance
proprietary network
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CN201610404400.8A
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Chinese (zh)
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CN107483520B (en
Inventor
王磊
徐立
田磊磊
林志勇
裴晓辉
王跃
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Alibaba Group Holding Ltd
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Alibaba Group Holding Ltd
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Priority to CN201610404400.8A priority Critical patent/CN107483520B/en
Publication of CN107483520A publication Critical patent/CN107483520A/en
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Publication of CN107483520B publication Critical patent/CN107483520B/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/1097Protocols 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]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/1001Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers

Abstract

The application proposes a kind of method and apparatus of network attached storage instance processes, is related to cloud computing product web field, methods described includes:Mount point corresponding with file system instance is created in proprietary network;The mount point is connected with the network attached storage nas server outside proprietary network;According to request network packet, isolation and differentiation file system instance on the nas server.Under conditions of being authorized, a NAS file system instance can be shared by multiple proprietary networks, ensure the security of example while eliminating file system instance and being bound by force with proprietary network.

Description

A kind of method and apparatus of network attached storage instance processes
Technical field
The present invention relates to cloud computing product web field, and in particular to a kind of network attached storage (NAS, full name Network Attached Storage) instance processes method and apparatus.
Background technology
In NAS system, file or directory operation are all based on volume, and one NAS volumes is referred to as a file system instance, Such as in most typical NFS (Network File System, NFS) agreement, for reading and writing of files, it is necessary to will File system instance is mounted on local directory tree, and carry object is then made up of instance address and mount directory, therefore In one NAS system, in order to isolate each file system instance, instance address and mount directory allow for forming unique mark Know.But in proprietary network environment, the problem of Network Isolation and private net address are multiplexed be present, therefore how ensure example every From with security on the premise of, get through network path and accurate identification file system instance become NAS file storage services Key technology scheme.
The solution of the isolation of NAS file system instances and mark is main under existing proprietary network environment in correlation technique Have following two:
1st, the NAS services exclusively enjoyed and storage resource are disposed in proprietary network so that the file system inside proprietary network All distribution is on resource is exclusively enjoyed for example, and instance address is appointed as private net address, inside proprietary network by example private network Location and mount directory carry out mark and the isolation of example;And the characteristic then using Network Isolation between proprietary network carries out example Isolation.The typical practice of this scheme is that NAS system (such as NFS Server (clothes are disposed on the virtual machine inside proprietary network Business device) and rear end storage), proprietary network internal user accesses file system by way of direct designated virtual machine private address System example.
2nd, the service of NAS system and storage resource are deployed in outside proprietary network, and get through each proprietary network to NAS systems The path of system, while be that shared NAS system distributes a routable address inside each proprietary network, in proprietary network In access to All Files system example all carried out by the address, and using mount directory as globally unique mark with up to To the purpose of example isolation.
But related art scheme is primarily present following shortcoming:
Proprietary network exclusively enjoys the scheme simple, intuitive of NAS services and storage resource and has higher security, but whole Body lower deployment cost is higher, and the horizontal extension of file system instance and elastic telescopic ability are weaker, easily cause resource it is uneven and Waste.Simultaneously as the factor of Network Isolation, file system instance inside a proprietary network will completely can not be by other nets Network accesses, and lacks flexibility.
Proprietary network deployed outside NAS system and get through network scheme solve system level extension and the wasting of resources The problem of, and file system instance can be accessed easily by multiple dedicated network users, but due to lack network every From protection, the security of file system is poor, it is necessary to more complicated means strengthen the security of file system, at the same with Mount directory is unfriendly to user as the mode of instance identification, destroys the original hierarchical structure meaning of mount directory.
The content of the invention
The present invention provides a kind of method and apparatus of network attached storage instance processes so that NAS services are ensuring each text Part system example is logically independent and safety on the premise of, share back-end services and storage resource, possess elastic telescopic and horizontal expand Exhibition ability.
In order to realize foregoing invention purpose, the technical scheme that the present invention takes is as follows:
A kind of method of network attached storage instance processes, including:
Mount point corresponding with file system instance is created in proprietary network;
The mount point is connected with the network attached storage nas server outside proprietary network;
According to request network packet, isolation and differentiation file system instance on the nas server.
Preferably, mount point corresponding with file system instance is created in proprietary network includes:
It is that the file system instance distributes a private address in proprietary network, the private address is used for proprietary net File system instance corresponding to the access of network internal user.
Preferably, the mount point is connected with the network attached storage nas server outside proprietary network including:
Private address in load balancing SLB front network interconnection agreement IP and proprietary network is bound;
The connection of network attached storage nas server and the private address is established according to the front end IP of the SLB.
Preferably, the mount point is connected with the network attached storage nas server outside proprietary network including:
The private address to the SLB front ends IP route entry are issued to each gateway of proprietary network cluster, made Obtaining SLB will ask network data to forward a packet to corresponding nas server according to load balancing.
Preferably, request network packet includes packet header, and the packet header includes the unique mark of file system instance;File The unique mark of system example includes:The sequence number of proprietary network corresponding to the file system instance and in the proprietary network For the private network IP of file system instance distribution.
Preferably, according to request network packet, isolation and differentiation file system instance bag on the nas server Include:
The virtual machine VM received in the proprietary network sends request network packet;
The sequence number of proprietary network corresponding to the file system instance in network packet packet header will be asked and described special Have in network and parsed for the private network IP of file system instance distribution, according to proprietary network corresponding to the file system instance Sequence number and in the proprietary network for file system instance distribution private network IP identify request network packet file System example, carry out file system protocol processing.
The present invention also provides a kind of device of network attached storage instance processes, including:
Creation module, it is arranged to create mount point corresponding with file system instance in proprietary network;
Binding module, it is arranged to connect the mount point with the network attached storage nas server outside proprietary network;
Identification module, it is arranged on the nas server according to request network packet, isolation and differentiation file system Example.
Preferably, the creation module creates mount point corresponding with file system instance in proprietary network and referred to:
It is that the file system instance distributes a private address in proprietary network, the private address is used for proprietary net File system instance corresponding to the access of network internal user.
Preferably, the binding module is by the network attached storage nas server outside the mount point and proprietary network Connection refers to:
Private address in load balancing SLB front network interconnection agreement IP and proprietary network is bound;
The connection of network attached storage nas server and the private address is established according to the front end IP of the SLB.
Preferably, the binding module is by the network attached storage nas server outside the mount point and proprietary network Connection refers to:
The private address to the SLB front ends IP route entry are issued to each gateway of proprietary network cluster, made Obtaining SLB will ask network data to forward a packet to corresponding nas server according to load balancing.
Preferably, the identification module is isolated according to request network packet on the nas server and distinguishes file System example refers to:
The virtual machine VM received in the proprietary network sends request network packet;
The sequence number of proprietary network corresponding to the file system instance in network packet packet header will be asked and described special Have in network and parsed for the private network IP of file system instance distribution, according to proprietary network corresponding to the file system instance Sequence number and in the proprietary network for file system instance distribution private network IP identify request network packet file System example, carry out file system protocol processing.
Compared to the prior art the present invention, has the advantages that:
The scheme of the invention in proprietary network environment, isolated to file system instance and identified, can cause NAS Service ensure that each file system instance is logically independent and safety on the premise of, share back-end services and storage resource, possess bullet Property flexible and horizontal extension ability, while file system instance is easily shared between multiple proprietary networks, The technical scheme of invention disposed outside proprietary network can horizontal extension distributed NAS system, proprietary network internal user can be with Specific file system instance in NAS system is accessed by private net address, and file system instance can utilize Network Isolation Characteristic ensures safety.Under conditions of being authorized, a NAS file system instance can be shared by multiple proprietary networks, Eliminate the security for ensureing example while file system instance is bound by force with proprietary network.
Brief description of the drawings
Fig. 1 is the flow chart of the method for the network attached storage instance processes of the embodiment of the present invention;
Fig. 2 is the structural representation of the device of the network attached storage instance processes of the embodiment of the present invention;
Fig. 3 is the isolation of NAS examples, mark, shared schematic diagram in the proprietary network environment of the embodiment of the present invention 1.
Embodiment
To make the goal of the invention of the present invention, technical scheme and beneficial effect of greater clarity, below in conjunction with the accompanying drawings to this The embodiment of invention is illustrated, it is necessary to illustrate, in the case where not conflicting, in the embodiment and embodiment in the application Feature can mutually be combined.
As shown in figure 1, the embodiment of the present invention provides a kind of method of network attached storage instance processes, including:
S101, mount point corresponding with file system instance is created in proprietary network;
S102, the mount point connected with the network attached storage nas server outside proprietary network;
S103, on the nas server according to request network packet, isolation and distinguish file system instance.
Wherein, step S101 includes:
It is that the file system instance distributes a private address in proprietary network, the private address is used for proprietary net File system instance corresponding to the access of network internal user.
Step S102 includes:
Private address in load balancing SLB front network interconnection agreement IP and proprietary network is bound;
The connection of network attached storage nas server and the private address is established according to the front end IP of the SLB.
Specifically, step S102 process is:
The private address to the SLB front ends IP route entry are issued to each gateway of proprietary network cluster, made Obtaining SLB will ask network data to forward a packet to corresponding nas server according to load balancing.
Request network packet includes packet header, and the packet header includes the unique mark of file system instance;File system is real The unique mark of example includes:The sequence number of proprietary network corresponding to the file system instance and be file in the proprietary network The private network IP of system example distribution.
Step S103 includes:
The virtual machine VM received in the proprietary network sends request network packet;
The sequence number of proprietary network corresponding to the file system instance in network packet packet header will be asked and described special Have in network and parsed for the private network IP of file system instance distribution, according to proprietary network corresponding to the file system instance Sequence number and in the proprietary network for file system instance distribution private network IP identify request network packet file System example, carry out file system protocol processing.
As shown in Fig. 2 the embodiment of the present invention also provides a kind of device of network attached storage instance processes, including:
Creation module, it is arranged to create mount point corresponding with file system instance in proprietary network;
Binding module, it is arranged to connect the mount point with the network attached storage nas server outside proprietary network;
Identification module, it is arranged on the nas server according to request network packet, isolation and differentiation file system Example.
The creation module creates mount point corresponding with file system instance in proprietary network and referred to:
It is that the file system instance distributes a private address in proprietary network, the private address is used for proprietary net File system instance corresponding to the access of network internal user.
The binding module connects the mount point with the network attached storage nas server outside proprietary network Refer to:
Private address in load balancing SLB front network interconnection agreement IP and proprietary network is bound;
The connection of network attached storage nas server and the private address is established according to the front end IP of the SLB.
The binding module connects the mount point with the network attached storage nas server outside proprietary network Refer to:
The private address to the SLB front ends IP route entry are issued to each gateway of proprietary network cluster, made Obtaining SLB will ask network data to forward a packet to corresponding nas server according to load balancing.
The identification module is real according to request network packet, isolation and differentiation file system on the nas server Example refers to:
The virtual machine VM received in the proprietary network sends request network packet;
The sequence number of proprietary network corresponding to the file system instance in network packet packet header will be asked and described special Have in network and parsed for the private network IP of file system instance distribution, according to proprietary network corresponding to the file system instance Sequence number and in the proprietary network for file system instance distribution private network IP identify request network packet file System example, carry out file system protocol processing.
Embodiment 1
As shown in figure 3, the isolation of NAS examples, mark, shared step in proprietary network environment of the embodiment of the present invention:
(1) mount point is created in proprietary network:Due to the characteristic of Network Isolation, proprietary network internal user can only access Private net address, therefore in order to access file system instance, an extension corresponding with example must be created inside proprietary network Loading point, and the mount point can connect with the nas server outside proprietary network, proprietary network internal user is asked to the mount point Nas server will be forwarded to immediately by asking.Concrete scheme is:
A1, a private address is distributed for file system instance in proprietary network, the private address is referred to as one Endpoint, proprietary network internal user access its corresponding file system instance by the address.
A2, the endpoint in the front end IP of load balancing (SLB) and proprietary network bound, way is by endpoint Route entry to SLB front ends IP is issued to each gateway of proprietary network cluster, now to the endpoint inside proprietary network Access request will be routed to SLB front ends IP, and before the rear end real server of SLB front ends IP bindings are exactly NAS system Terminal.Therefore the request in proprietary network to mount point endpoint will be first routed to SLB, and then SLB will be according to negative Carry balance policy and forward requests to certain NAS front end machine, in such a mode, text of the NAS Service Sources in each proprietary network Share between part system example and dispatched by SLB, therefore file system possesses powerful horizontal extension ability.
(2) according to the isolation of request network header packet information and differentiation file system instance in NAS front end machines:Due to different special There is the request in network to different endpoint to be all eventually forwarded to one group of identical NAS front end machine, and in proprietary network Endpoint IP address is private net address, does not possess uniqueness, therefore NAS front end machines can not be come according only to endpoint addresses Isolation and differentiation example.Therefore, we introduce two tuples<TunnelId, EndpointIP>It is used as file system reality The unique mark of example, wherein, TunnelId is the sequence number for representing specific proprietary network, and EndpointIP is to be in proprietary network The private network IP of file system instance distribution.NAS front end machines parse from TCP packet headers last variable-length fields (option) TunnelId and EndpointIP, each request is identified with this, so as to correspond to specific file system instance.It is proprietary The request forwarding of file system instance and handling process are (as shown in Figure 3) in network:The control system mainly has two aspects Function:1) instance management, including create, change, delete;2) authorization check, the request sent to client carry out authority Checking.
B1, the VM in proprietary network send a request to file system instance mount point endpoint, request TCP message is current special after VXLAN packages (VXLAN is a kind of technology for being packaged two layer message with three layer protocols) There are the TunnelId of network and the EndpointIP of file system to be encapsulated in VXLAN message.
B2, network bag are torn open on VM gateway according to routing forwarding to SLB front end machines, SLB front end machines to VXLAN messages Bag, TunnelId and EndpointIP is put into the option fields on TCP message head, then SLB is according to load balancing plan The TCP message of request is slightly forwarded to a NAS front end machine.
B3, NAS front end machine from kernel protocol stack take out conventional TCP message while, by header option fields TunnelId and EndpointIP parse in the lump, the file system instance of request is identified according to two tuple, then Start follow-up file system protocol processing.
(3) NAS file system instances are shared between multiple proprietary networks:In such scheme, file system instance and spy Determine proprietary network decoupling, all examples share NAS front end services resource and rear end storage resource, and access of the VM to example is to pass through What the endpoint of mount point was carried out, therefore for a specific file system instance, only need to be in different proprietary networks Mount point is respectively created and carries out authority configuration, you can easily realizes that the NAS examples between proprietary network are shared.
Although disclosed embodiment is as above, its content is only to facilitate understand the technical side of the present invention Case and the embodiment used, are not intended to limit the present invention.Any those skilled in the art to which this invention pertains, not On the premise of departing from disclosed core technology scheme, any modification can be made in the form and details of implementation and is become Change, but the protection domain that the present invention is limited, the scope that must be still limited by appended claims are defined.

Claims (11)

  1. A kind of 1. method of network attached storage instance processes, it is characterised in that including:
    Mount point corresponding with file system instance is created in proprietary network;
    The mount point is connected with the network attached storage nas server outside proprietary network;
    According to request network packet, isolation and differentiation file system instance on the nas server.
  2. 2. the method as described in claim 1, it is characterised in that:Hang corresponding with file system instance is created in proprietary network Loading point includes:
    It is that the file system instance distributes a private address in proprietary network, the private address is used in proprietary network File system instance corresponding to portion user access.
  3. 3. method as claimed in claim 2, it is characterised in that:The mount point is deposited with network attached outside proprietary network Storage nas server connection includes:
    Private address in load balancing SLB front network interconnection agreement IP and proprietary network is bound;
    The connection of network attached storage nas server and the private address is established according to the front end IP of the SLB.
  4. 4. method as claimed in claim 3, it is characterised in that:The mount point is deposited with network attached outside proprietary network Storage nas server connection includes:
    The private address to the SLB front ends IP route entry are issued to each gateway of proprietary network cluster so that SLB According to load balancing network data will be asked to forward a packet to corresponding nas server.
  5. 5. the method as described in claim 1 or 4, it is characterised in that:Request network packet includes packet header, and the packet header includes The unique mark of file system instance;The unique mark of file system instance includes:It is proprietary corresponding to the file system instance The sequence number of network and the private network IP distributed in the proprietary network for file system instance.
  6. 6. method as claimed in claim 5, it is characterised in that:On the nas server according to request network packet, every Include from differentiation file system instance:
    The virtual machine VM received in the proprietary network sends request network packet;
    The sequence number of proprietary network corresponding to the file system instance in network packet packet header will be asked and in the proprietary net Private network IP in network for file system instance distribution is parsed, according to the sequence of proprietary network corresponding to the file system instance Number and in the proprietary network for file system instance distribution private network IP identify request network packet file system Example, carry out file system protocol processing.
  7. A kind of 7. device of network attached storage instance processes, it is characterised in that:Including:
    Creation module, it is arranged to create mount point corresponding with file system instance in proprietary network;
    Binding module, it is arranged to connect the mount point with the network attached storage nas server outside proprietary network;
    Identification module, it is arranged on the nas server real according to request network packet, isolation and differentiation file system Example.
  8. 8. device as claimed in claim 7, it is characterised in that:The creation module is created in proprietary network and file system Mount point refers to corresponding to example:
    It is that the file system instance distributes a private address in proprietary network, the private address is used in proprietary network File system instance corresponding to portion user access.
  9. 9. device as claimed in claim 8, it is characterised in that:The binding module is by outside the mount point and proprietary network Network attached storage nas server connection refer to:
    Private address in load balancing SLB front network interconnection agreement IP and proprietary network is bound;
    The connection of network attached storage nas server and the private address is established according to the front end IP of the SLB.
  10. 10. device as claimed in claim 9, it is characterised in that:The binding module is by outside the mount point and proprietary network The network attached storage nas server connection in portion refers to:
    The private address to the SLB front ends IP route entry are issued to each gateway of proprietary network cluster so that SLB According to load balancing network data will be asked to forward a packet to corresponding nas server.
  11. 11. the device as described in claim 7 or 10, the identification module is on the nas server according to request network number According to bag, isolation and differentiation file system instance refer to:
    The virtual machine VM received in the proprietary network sends request network packet;
    The sequence number of proprietary network corresponding to the file system instance in network packet packet header will be asked and in the proprietary net Private network IP in network for file system instance distribution is parsed, according to the sequence of proprietary network corresponding to the file system instance Number and in the proprietary network for file system instance distribution private network IP identify request network packet file system Example, carry out file system protocol processing.
CN201610404400.8A 2016-06-08 2016-06-08 Method and device for processing network attached storage instance Active CN107483520B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109639804A (en) * 2018-12-18 2019-04-16 交通银行股份有限公司 Monitoring method, system and the production equipment of production system, terminal, server

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001067707A2 (en) * 2000-03-03 2001-09-13 Scale Eight, Inc. A network storage system
CN1726454A (en) * 2002-10-17 2006-01-25 英特尔公司 A distributed network attached storage system
CN102325196A (en) * 2011-10-27 2012-01-18 上海文广互动电视有限公司 Distributed cluster storage system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001067707A2 (en) * 2000-03-03 2001-09-13 Scale Eight, Inc. A network storage system
CN1726454A (en) * 2002-10-17 2006-01-25 英特尔公司 A distributed network attached storage system
CN102325196A (en) * 2011-10-27 2012-01-18 上海文广互动电视有限公司 Distributed cluster storage system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109639804A (en) * 2018-12-18 2019-04-16 交通银行股份有限公司 Monitoring method, system and the production equipment of production system, terminal, server

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