CN100349423C - Access method of document in pile system - Google Patents
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- CN100349423C CN100349423C CNB2005101378278A CN200510137827A CN100349423C CN 100349423 C CN100349423 C CN 100349423C CN B2005101378278 A CNB2005101378278 A CN B2005101378278A CN 200510137827 A CN200510137827 A CN 200510137827A CN 100349423 C CN100349423 C CN 100349423C
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Abstract
The present invention relates to an access method for documents in a pile system, which comprises the following steps: (1) a unique constant device mark is arranged in each pile unit of the pile system; the mapping relation between device marks of all pile units and the device communication address of the file unit of the file system is stored in each file unit; (2) when one of the file units receives file access request of the device mark indicating a target file in the target file unit, the file unit finds the device communication address corresponding to the device mark according to the mapping relation stored in the step (1); then, the file access request is transmitted to the target file unit according to the device communication address so that the target file unit carries out the corresponding access operation to the target file unit. The present invention is convenient to find the target file unit in file access without considering whether the unit of the file system is changed; the technical problem that the relative configuration of a filename can not be recovered does not occur.
Description
Technical field
The present invention relates to the communications field, relate in particular to the method that the file in the stackable unit of pile system is conducted interviews.
Background technology
Piling up of Ethernet switch is that many Ethernet switches are linked together, and composition can provide the Ethernet switch of a plurality of ports.The user can manage all switches in the pile system, just as managing a single equipment.Pile system can provide access service for more user, to adapt to the networking demand.Support is piled up the Ethernet switch of function because its expandability flexibly, and unified external webmaster in the middle of enterprise and wide-band networking are used, more and more comes into one's own.Usually be referred to as stackable unit with having the Ethernet switch that piles up function in the pile system.In each pile system, stackable unit adopts such as topological structure such as star-like, ring-like carries out networking, and adopt as side by side or management modes such as principal and subordinate the stackable unit in the pile system is managed.
In each stackable unit of pile system, identify and distinguished by Unit ID (unit ID number) usually.Can be numbered in the following manner for the UNIT ID of each stackable unit number: as according to the priority orders of each stackable unit in pile system, be the unit1 that is numbered of the highest stackable unit of priority, the stackable unit that priority is taken second place be numbered unit2... by that analogy, perhaps come unit ID is numbered according to the sequence of positions of each stackable unit in the topological structure of pile system, as the topological structure of pile system employing chrysanthemum chain, the numbering of then adopt from left to right, order from top to bottom being carried out unit ID to each stackable unit etc.All be provided with the topology detecting unit in each stackable unit of pile system, it can send topology and detect bag to contiguous switch, thereby obtains its corresponding information, can obtain the topological structure information of whole pile system at last.By the topology detecting unit can obtain this stackable unit in pile system priority or the sequence of positions in the topological structure of pile system, thereby determine the unit ID of this stackable unit.When new equipment adds this pile system, when adding pile system as the very high equipment of priority, this equipment obtains the unit ID of this equipment by the topology detecting unit of this equipment, and the unitID of other stackable unit also may change in the pile system.
Utilize unit ID to carry out file access in the existing pile system.The method of file access is as follows in the existing pile system:
At first, the source stackable unit receives the file access request of user's input, therefrom obtains the unit ID of the target stackable unit at file destination place, and according to unit ID the file access request is forwarded to corresponding target stackable unit.The path that needs specified document in the file access request of user's input, usually adopt the file designation rule of " unit ID＞+memory device name+directory name+filename " to inform the path and the filename at file destination place in the prior art, the vrpcfg.cfg called after " unit1＞flash:/vrpcfg.cfg " on the unit1 equipment flash for example, the source stackable unit can obtain the unit ID of the target stackable unit at file destination place, because there are mapping relations in unit ID and physical address (as MAC Address), so the source stackable unit can be forwarded to corresponding target stackable unit with the file access request according to unit ID.
Subsequently, the target stackable unit is carried out corresponding operating according in the file access request that receives to corresponding file, as read operation, write operation etc.
Such as, the user piles up input file access request " readunit2＞flash:/logfile/logfile.log " on the unit one, promptly reads the logfile.log file under the logfile catalogue that unit2 goes up flash.
In the above-mentioned pile system file access process, the unit ID of the file destination place stackable unit that user's acquisition in advance will be visited, but the unit ID that considers stackable unit may change, before therefore each file access, carry out earlier the unit ID of target stackable unit inquiry (such as, by disp xm order inquiry) know the unit ID of the file destination place stackable unit that will visit.
There is following problem in the method for file access in the existing pile system:
(1) when new equipment added pile system or has stackable unit to leave from pile system, the unit ID of the stackable unit in the pile system changed probably.If to be on the safe side, all need to obtain the unit ID of target stackable unit when carrying out file access, increase file access difficulty and the time that file access spent by additional command at every turn.And the user do not know the increase of equipment in the pile system or when reducing, often takes place to visit file destination with original file path, and then the visit appearance takes place or have access to the consequence of other different file.
(2) path just because of file access is dynamic, and the expendable consequence of filename relevant configuration often takes place.The master catalogue that FTP Server can't the striding equipment designated user among the XRN (can expand elastomeric network) for example because configuration when recovering unit ID may not determine or change.
(3) from having new equipment to add pile system or have stackable unit to leave from pile system, each stackable unit has all configured unit ID in the pile system, and this needs a period of time.If the unit ID of query aim stackable unit is in this section in the period, the unit ID that the target that inquires is probably piled up is the unit ID before the unit in the pile system does not change, but the unit ID of the target stackable unit after the unit of time in pile system that sends file access command changed, the file access of this situation mistake will occur or have access to the consequence of other different files.
Summary of the invention
The object of the present invention is to provide the access method of file in a kind of pile system, with the non-constant of consistency of file command in the file access process in the solution prior art, cause having new equipment to add pile system thus easily or have stackable unit from pile system, to leave and visit the high technical problem of error rate.
For addressing the above problem, the invention discloses the access method of file in a kind of pile system, may further comprise the steps:
(1) each stackable unit of pile system all is provided with unique changeless device identification, and preserves the device identification of all stackable unit in the pile system and the mapping relations of device talk address in each stackable unit;
(2) when wherein one when piling up the unit and receiving the file access request of the device identification that shows file destination place target stackable unit, the mapping relations of preserving according to step (1) find described device identification corresponding equipment address earlier, according to the device talk address target stackable unit is transmitted in the file access request again, so that the target stackable unit is carried out corresponding accessing operation to described file destination.
It is by path, following file designation mode specified document place in step (2) the file access request: the device identification of target stackable unit+memory device name+root+filename.
Can also be by path, following file designation mode specified document place in step (2) the file access request: the device identification+root+filename of memory device name+target stackable unit.
Step (2) also comprises: when the mapping relations of preserving according to step (1) do not find the stackable unit of described device talk address correspondence, other stackable unit to pile system sends the broadcast query request, if in Preset Time, receive the broadcast query response of target stackable unit, then preserve the device talk address of described target stackable unit and the mapping relations of described device identification, according to the device talk address target stackable unit is transmitted in the file access request again.
A1: there have new unit to add in pile system to be fashionable, gives one device identification of described unit by user's input or system assignment, and described initiate stackable unit other all stackable unit in pile system send the statement request that comprises described device identification; A2: described each all devices of receiving that the stackable unit of statement request is preserved described device identification and this unit identifies and contrasts one by one, judge whether to exist identical device identification, if, then carry out step a3, otherwise the mapping relations of preserving described device identification and described address; A3: other stackable unit to pile system is sent the broadcast query request, and judge and whether receive that in Preset Time the broadcast query that stackable unit is returned responds, if then initiate stackable unit is isolated, otherwise the mapping relations of preserving described device identification and described address.
The mapping relations of described device identification and address are kept in the maps identifiers table.Described maps identifiers table equipment is on the resolver of each stackable unit.Described device talk address is the media access control MAC Address or the unit ID of each stackable unit.
The invention discloses the access method of file in the another kind of pile system, comprising:
(1) stackable unit receives the file access request in the pile system, and described file access request comprises the media access control MAC Address of file place target stackable unit and the path on described target stackable unit;
(2) described stackable unit is forwarded to the target stackable unit according to MAC Address with the file access request, so that the target stackable unit is carried out corresponding accessing operation to described file destination.
Be by path, following file command mode specified document place in step (1) the file access request: the device identification of target stackable unit+memory device name+root+filename, perhaps
Device identification+root+the filename of memory device name+target stackable unit.
Compared with prior art, the present invention has the following advantages: the present invention sets one for each stackable unit in the pile system and immobilizes and unique device identification, by setting up and preserve the device identification of stackable unit in all pile systems and the mapping relations between the device talk address, when file access, can conveniently find the target stackable unit and need not to consider whether the unit of pile system changes, easy to use and the expendable technical problem of filename relevant configuration can not occur.
Description of drawings
Fig. 1 is a kind of flow chart of file access in the pile system of the present invention;
Fig. 2 is an instance graph in file system title of the present invention space;
Fig. 3 is another instance graph in file system title of the present invention space;
Fig. 4 is the another kind of flow chart of file access in the pile system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, specify the present invention.
Core of the present invention is: because prior art adopts unit ID to show the target stackable unit at file destination place, though the file access request can be forwarded to the target stackable unit by unit ID, but, unit ID might change after the stackable unit of pile system changes, and therefore causes file access error rate height and the expendable technological deficiency of filename relevant configuration.The present invention sets one for each stackable unit in the pile system and immobilizes and unique device identification, by setting up and preserve the device identification of stackable unit in all pile systems and the mapping relations between the device talk address, when file access, can conveniently find the target stackable unit and need not to consider whether the unit of pile system changes, easy to use and the expendable technical problem of filename relevant configuration can not occur.
See also Fig. 1, it is the flow chart of the access method of file in a kind of pile system.It may further comprise the steps:
S210: each stackable unit of pile system all is provided with unique changeless device identification, and preserves the device identification of all stackable unit in the pile system and the mapping relations of device talk address in each stackable unit;
S220: when wherein one when piling up the unit and receiving the file access request of the device identification that shows file destination place target stackable unit, the mapping relations of preserving according to step S210 find described device identification corresponding equipment address earlier, according to the device talk address target stackable unit is transmitted in the file access request again, so that the target stackable unit is carried out corresponding accessing operation to described file destination.
Below specifically introduce each step.
One, step S210
Each stackable unit in the pile system all has its unique device identification, and this device identification can or not withdrawed from and changes along with the adding of stackable unit in the pile system.Device identification can also can be by system assignment by User Defined.
How to guarantee the uniqueness of device identification?
All stackable unit in the pile system mainly adopt the management mode of master-slave mode, promptly have a main stackable unit in the pile system, and other stackable unit is from stackable unit.
There have new unit to add in pile system to be fashionable, can have following steps:
A1: give one device identification of described unit by user's input or system assignment, described initiate stackable unit other all stackable unit in pile system send the statement request that comprises described device identification;
A2: described each all devices of receiving that the stackable unit of statement request is preserved described device identification and this unit identifies and contrasts one by one, judge whether to exist identical device identification, if, then carry out step a3, otherwise the mapping relations of preserving described device identification and described address;
A3: other stackable unit (not comprising the stackable unit that will add) to pile system is sent the broadcast query request, and judge and whether receive that in Preset Time the broadcast query that stackable unit is returned responds, if, then initiate stackable unit is isolated, otherwise the mapping relations of preserving described device identification and described address.
Whether send the broadcast query request, mainly be to exist really with the new device identification identical device that adds in order to confirm.Because the stack equipment that has is after leaving pile system, other stackable unit are not also left this unique device identifier and its address mapping relations of equipment and are deleted from the maps identifiers table of these stackable unit.
Add fashionable as new unit, also can have another kind of treatment step: give one device identification of described unit by user's input or system assignment, the main stackable unit of described initiate stackable unit in pile system sends the statement request that comprises described device identification;
Described main stackable unit contrasts all devices sign of described device identification and the preservation of this unit one by one, if there is identical device identification, then return a response instruction that remodifies device identification to new stackable unit, so that the user re-enters new device identification or system distributing equipment sign once more;
The new unit of receiving no like-identified response instruction sends statement or sends the main stackable unit that no like-identified responds and send statement to other stackable unit of pile system to other stackable unit of pile system, so that other stackable unit is preserved the mapping relations of described device identification in initiate unit and described address.
Can guarantee the uniqueness of device identification by above-mentioned processing mode.
In addition, how to know the equipment variations situation of whole system, consider when original stackable unit is left whole pile system, this stackable unit can not notified other stackable unit usually, have high performance pile system in addition and all support split (division), merge operations such as (merging), promptly support at least two pile systems are merged into a pile system or a pile system is split at least two pile systems, need send state information packet between the stackable unit to know the variation of equipment in the whole pile system in real time.When not finding the stackable unit of described device talk address correspondence according to the mapping relations of preserving in advance, other stackable unit to pile system sends the broadcast query request, if in Preset Time, receive the broadcast query response of target stackable unit, then preserve the device talk address of described target stackable unit and the mapping relations of described device identification, according to the device talk address target stackable unit is transmitted in the file access request again, so that the target stackable unit is carried out corresponding accessing operation to described file destination.If do not receive the file broadcast query response of target stackable unit in Preset Time, it is overtime then to return broadcast query.
In addition, the present invention also sets and can revise device identification in the stackable unit by manual type, with user-friendly.
The present invention can adopt the maps identifiers table to show the mapping relations of the device talk address of the device identification of stackable unit and this stackable unit, also can adopt other file layout, usually the maps identifiers table is arranged in the resolver.Also have, preferably accomplish to hope civilian business in the name of device identification, perhaps image is good remembers, so that the user is easy to use.The device talk address is meant and can determines the target stackable unit by this address, the device talk address can be physical address (as a MAC Address), also can be the aforementioned Unit ID that speaks of stackable unit, because the Unit ID and the physical address of existing each stackable unit have been set up mapping relations, be to provide a Unit ID in the prior art can find corresponding stackable unit, even may there be dynamic change in the Unit ID of stackable unit, but can determine stackable unit equally according to Unit ID, therefore, if the mapping relations of apparatus for establishing sign and Unit ID, equally, also can determine stackable unit.
Two, step S220
Path, file command mode specified document place, i.e. the target stackable unit at specified document place and the path on the unit, place.Such as: the naming method that adopts " device identification+root+filename of memory device name+target stackable unit ".The file designation mode adopts tree, and the superiors are name space roots, articulates various memory devices under it.Under memory device, articulate the unique device identifier of each equipment, articulate bibliographic structure under each equipment.Unit1 and unit2 two stackable unit are for example arranged in the pile system, and corresponding unique device identifier is beijing and hangzhou, and its name space as shown in Figure 2.
The present invention can also adopt the naming method of " target stackable unit+memory device name+root+filename ".The file designation mode adopts tree, and the superiors are name space roots, and it articulates the unique device identifier of various device down.Under device identifier, articulate the memory device of each equipment, articulate bibliographic structure under each memory device.Unit1 and unit2 two stackable unit are for example arranged in the pile system, and corresponding unique device identifier is beijing and hangzhou, and its name space as shown in Figure 3.
When stackable unit receives the file access request, generally include file system title space in the file access request to the file destination place of corresponding accessing operation of file (as reading, write data etc.) and above-mentioned form.Receive the resolver of the stackable unit of file access request is at first separated out the target stackable unit according to the maps identifiers tabulation device talk address, according to the device talk address file access request is forwarded to the target stackable unit then.Target stackable unit resolution file access request obtains the path at file destination place and any accessing operation of employing, finds file destination according to the path again, and it is carried out corresponding accessing operation.
When upheaval takes place in pile system, be that stackable unit in the pile system is when changing, the maps identifiers table can be incredible, whether the destination device that receives access request is checked through self is real visitor's (such as whether finding this file destination according to the path), if not also promptly provide negates request, request is sent the stackable unit of access request and is received to negate after asking, to start broadcast query, knows real target stackable unit.
The present invention also can be directly with the MAC Address in the stackable unit as unique device identification, it can omit the maps identifiers table.Please refer to Fig. 4, it is the access method of file in the another kind of pile system of the present invention.It comprises:
S310: stackable unit receives the file access request in the pile system, and described file access request comprises the MAC Address of file place target stackable unit and the path on described target stackable unit;
S320: described stackable unit is forwarded to the target stackable unit according to MAC Address with the file access request, so that the target stackable unit is carried out corresponding accessing operation to described file destination.
It can adopt the file system title space identical with such scheme: as: " device identification of target stackable unit+memory device name+root+filename ", perhaps " device identification+root+filename of memory device name+target stackable unit ".
But be to use MAC (Media Access Control Address) address to identify stackable unit.Because MAC Address is 6 hexadecimal numerals, be not easy memory, so for domestic consumer, identify stackable unit by MAC Address is inconvenient to remember very much, but this scheme can conveniently find the target stackable unit and need not to consider whether the unit of pile system changes when file access, and the expendable technical problem of filename relevant configuration can not occur.
More than disclosed only be several specific embodiment of the present invention, but the present invention is not limited thereto, any those skilled in the art can think variation all should drop in protection scope of the present invention.
Claims (10)
1, the access method of file in a kind of pile system is characterized in that, may further comprise the steps:
(1) each stackable unit of pile system all is provided with unique changeless device identification, and preserves the device identification of all stackable unit in the pile system and the mapping relations of device talk address in each stackable unit;
(2) when wherein one when piling up the unit and receiving the file access request of the device identification that shows file destination place target stackable unit, the mapping relations of preserving according to step (1) find described device identification corresponding equipment address earlier, according to the device talk address target stackable unit is transmitted in the file access request again, so that the target stackable unit is carried out corresponding accessing operation to described file destination.
2, the access method of file in the pile system as claimed in claim 1, it is characterized in that, be by path, following file designation mode specified document place in step (2) the file access request: the device identification of target stackable unit+memory device name+root+filename.
3, the access method of file in the pile system as claimed in claim 1, it is characterized in that, be by path, following file designation mode specified document place in step (2) the file access request: the device identification+root+filename of memory device name+target stackable unit.
4, the access method of file in the pile system as claimed in claim 1, it is characterized in that, step (2) also comprises: when the mapping relations of preserving according to step (1) do not find the stackable unit of described device talk address correspondence, other stackable unit to pile system sends the broadcast query request, if in Preset Time, receive the broadcast query response of target stackable unit, then preserve the device talk address of described target stackable unit and the mapping relations of described device identification, according to the device talk address target stackable unit is transmitted in the file access request again.
5, the access method of file in the pile system as claimed in claim 1 is characterized in that, also comprises:
A1: there have new unit to add in pile system to be fashionable, gives one device identification of described unit by user's input or system assignment, and described initiate stackable unit other all stackable unit in pile system send the statement request that comprises described device identification;
A2: described each all devices of receiving that the stackable unit of statement request is preserved described device identification and this unit identifies and contrasts one by one, judge whether to exist identical device identification, if, then carry out step a3, otherwise the mapping relations of preserving described device identification and described address;
A3: other stackable unit to pile system is sent the broadcast query request, and judge and whether receive that in Preset Time the broadcast query that stackable unit is returned responds, if then initiate stackable unit is isolated, otherwise the mapping relations of preserving described device identification and described address.
6, the access method of file in the pile system as claimed in claim 1 is characterized in that the mapping relations of described device identification and address are kept in the maps identifiers table.
7, the access method of file in the pile system as claimed in claim 6 is characterized in that, described maps identifiers table equipment is on the resolver of each stackable unit.
8, the access method of file in the pile system as claimed in claim 1 is characterized in that, described device talk address is the media access control MAC Address or the unit ID of each stackable unit.
9, the access method of file in a kind of pile system is characterized in that, comprising:
(1) stackable unit receives the file access request in the pile system, and described file access request comprises the media access control MAC Address of file place target stackable unit and the path on described target stackable unit;
(2) described stackable unit is forwarded to the target stackable unit according to MAC Address with the file access request, so that the target stackable unit is carried out corresponding accessing operation to described file destination.
10, the access method of file in the pile system as claimed in claim 9, it is characterized in that, be by path, following file command mode specified document place in step (1) the file access request: the device identification of target stackable unit+memory device name+root+filename, perhaps
Device identification+root+the filename of memory device name+target stackable unit.
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| CN101068250B (en) * | 2007-06-08 | 2011-08-31 | 杭州华三通信技术有限公司 | Network equipment ID distributing method and device |
| CN101345708B (en) * | 2008-08-25 | 2010-12-22 | 杭州华三通信技术有限公司 | Method and apparatus for generating forwarding table |
| CN101764839B (en) * | 2009-12-23 | 2013-01-23 | 成都市华为赛门铁克科技有限公司 | Data access method and uniform resource locator (URL) server |
| CN102594941B (en) * | 2012-02-22 | 2015-06-17 | 福建星网视易信息系统有限公司 | Method for device access and device communication in building intercom system |
| CN102647465B (en) | 2012-03-30 | 2014-12-10 | 杭州华三通信技术有限公司 | File transfer protocol (FTP) data transmission method and device applied in stack system |
| CN103581124B (en) * | 2012-07-26 | 2017-04-12 | 联发科技股份有限公司 | Management frame handling method and related communication device thereof |
| CN103916494B (en) * | 2014-04-18 | 2017-08-25 | 福建星网锐捷网络有限公司 | The processing method and equipment of numbering |
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| US20050021684A1 (en) * | 2003-04-22 | 2005-01-27 | Hong-June Hsue | System and method for auto-configuring stackable network devices |
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| CN1447563A (en) * | 2002-03-22 | 2003-10-08 | 华为技术有限公司 | Stack speed process method in Ethernet exchanger |
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