CN105391629A - Resource backup method and device - Google Patents
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Abstract
The invention provides a resource backup method and device, and the method comprises the steps: dividing a resource index table into at least one resource index block, and transmitting the resource index block to a standby main controller, so as to enable the standby main controller to generate a backup resource index table according to the resource index block; periodically calculating first comparison information according to the resource index table; transmitting the first comparison information to the standby main controller, so that the standby main controller determines whether the standby resource index table is accurate or not according to the first comparison information; and transmitting the resource index block to the standby main controller again when a request message sent when the standby main controller determines that the standby resource index table is not accurate. The method guarantees that the standby resource index table is accurate in a mode of periodic detection and new backup, so as to solve a problem that the backup of the resource index table is not complete.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method and device of resource backup.
Background technology
Along with the develop rapidly of network technology, various message forwarding equipment is widely used.In order to improve the reliability of message forwarding equipment, message forwarding equipment can adopt dual master control technology usually, that is has two master control sets in same message forwarding equipment inside, and one is primary master control, and another is master control for subsequent use.Generally, message forwarding equipment uses primary master control, but when primary master control is broken down, will start master control for subsequent use.Because route information table includes some route table items, these route table items arrange according to the information recorded in resource index table, thus a composition route information table.In order to ensure that master control for subsequent use can normally work when primary master control cannot work on, usually can in advance the route information table in primary master control and resource index table be backuped in master control for subsequent use.
But in the prior art, when a backup is made, if occur blocking up between active/standby backup passage, cause resource index table partial loss, the correct route information table of sequence cannot be recovered according to complete resource index table, cause route table items align-err, make message forwarding equipment find the route table items of mistake, and then cause message repeating mistake.
Summary of the invention
In view of this, the invention provides a kind of method of resource backup, be applied in the primary master control of electronic equipment, resource index table is preserved in described primary master control, and described electronic equipment also comprises master control for subsequent use, and described method comprises:
Described resource index table is decomposed at least one resource index block, sends described resource index block to master control for subsequent use, generate the resource index table of backup to make described master control for subsequent use according to described resource index block;
According to resource index table, periodically calculate the first comparative information;
Send described first comparative information to master control for subsequent use, so that according to the first comparative information, master control for subsequent use confirms that whether the resource index table of described backup is accurate;
When receiving the request message that master control for subsequent use sends when confirming that the resource index table of backup is inaccurate, described resource index block is resend to master control for subsequent use.
The present invention also provides a kind of method of resource backup, and be applied in the master control for subsequent use of electronic equipment, described electronic equipment also comprises primary master control, and described method comprises:
Receive the resource index block that primary master control sends, described resource index block is at least one index block that the resource index table of preservation resolves into by described primary master control;
Described resource index block is combined as the resource index table of backup and preserves;
According to the resource index table of backup, calculate the second comparative information;
When receiving the first comparative information that primary master control sends, described first comparative information and described second comparative information are compared;
When confirming that the resource index table of backup is inaccurate according to comparative result, sending request message to primary master control, resending resource index block to master control for subsequent use to make primary master control.
The invention provides a kind of device of resource backup, be applied in the primary master control of electronic equipment, resource index table is preserved in described primary master control, and described electronic equipment also comprises master control for subsequent use, and described device comprises:
Index transmitting element, for described resource index table is decomposed at least one resource index block, sends described resource index block to master control for subsequent use, generates the resource index table of backup to make described master control for subsequent use according to described resource index block;
First computing unit, for according to resource index table, periodically calculates the first comparative information;
Detect transmitting element, for sending described first comparative information to master control for subsequent use, so that according to the first comparative information, master control for subsequent use confirms that whether the resource index table of described backup is accurate;
Index retransmission unit, for when the request message receiving master control for subsequent use transmission when confirming that the resource index table of backup is inaccurate, resends described resource index block to master control for subsequent use.
The present invention also provides a kind of device of resource backup, and be applied in the master control for subsequent use of electronic equipment, described electronic equipment also comprises primary master control, and described device comprises:
Index receiving element, for receiving the resource index block that primary master control sends, described resource index block is combined as resource backup concordance list and preserves, and described resource index block is at least one index block that the resource index table of preservation resolves into by described primary master control;
Second computing unit, for the resource index table according to backup, calculates the second comparative information;
Information contrast unit, for when receiving the first comparative information that primary master control sends, compares described first comparative information and described second comparative information;
Resending unit, when confirming that the resource index table of backup is inaccurate according to comparative result, sending request message to primary master control, resend resource index block to master control for subsequent use to make primary master control.
Technical scheme provided by the invention, adopts the mode periodically detecting and again back up to guarantee the resource index table complete and accurate backed up, backs up incomplete problem to solve resource index table.
Accompanying drawing explanation
Fig. 1 is provided by the inventionly a kind ofly applied to resource backup apparatus structure in primary master control and running environment schematic diagram thereof.
Fig. 2 is the process chart of a kind of resource backup provided by the invention.
Fig. 3 is a kind of data information structure relation schematic diagram provided by the invention.
Fig. 4 is the process chart that a kind of resource provided by the invention backs up again.
Fig. 5 is provided by the inventionly a kind ofly applied to resource backup apparatus structure in master control for subsequent use and running environment schematic diagram thereof.
Embodiment
The invention provides a kind of technical scheme of resource backup, back up incomplete problem to solve resource index table.In preferred scheme, the present invention adopts the mode periodically detecting and again back up to guarantee the resource index table complete and accurate backed up.Please refer to Fig. 1, present embodiment provides a kind of device of resource backup, be applied in the primary master control of electronic equipment, described device comprises index transmitting element, the first computing unit, detects transmitting element, index retransmission unit, position calculation unit and position transmitting element.Accordingly, please refer to Fig. 5, this enforcement also provides a kind of another resource backup device matched with this resource backup device, and this application of installation is in the master control for subsequent use of electronic equipment, and described device comprises index receiving element, the second computing unit, information contrast unit and information receiving unit.Please refer to Fig. 2, above two devices cooperatively interact and perform the handling process of resource index table backup between primary, spare master control.
Step 101, described resource index table is decomposed at least one resource index block by index transmitting element, sends described resource index block to master control for subsequent use.
Step 102, index receiving element receives the resource index block that primary master control is sent, and all described resource index blocks are combined as resource backup concordance list and preserve.
Because the amount of information of resource index table is usually larger, disposablely all send to master control for subsequent use, the transmission channel that likely there will be in the short time is blocked up, and therefore a resource index table can be decomposed into several resource index blocks, and then send to master control for subsequent use.In the prior art, resource index table follows route information table to send to master control for subsequent use together, specifically, resource index table includes some resource index list items, route information table includes some route table items, and resource index list item and route table items one_to_one corresponding, because prior art route stand-by information table is that the route table items in route information table is sent to master control for subsequent use one by one, and the resource index list item corresponding with described route table items also can together be sent to master control for subsequent use thereupon.This backup method is compared with technical scheme provided by the invention, and the number of times sending message can how a lot.Such as a resource index table includes 10 resource index list items, correspond, route information table also includes 10 route table items, and prior art then needs transmission 10 messages, these 10 resource index list items is followed 10 route table items and is sent to master control for subsequent use one by one; And resource index table can be resolved into 3 resource index blocks by technical scheme provided by the invention, so only need transmission 3 messages, these 3 resource index blocks are sent to master control for subsequent use.Can find out thus, technical method provided by the invention can ensure that resource index table has backed up with minimum transmission times, decreases the possibility of message dropping and appearance mistake in process of transmitting.
Step 103, position calculation unit, according to described resource index table, calculates the positional information of every bar route table items in route information table.
Step 104, position transmitting element sends described positional information and the extremely master control for subsequent use of described route table items, so that master control for subsequent use preserves the assigned address of described route table items to described route information table according to described positional information.
Because prior art is that route table items and resource index list item corresponding with it are together sent master control for subsequent use, embodiment provided by the invention is then that resource index block is sent to separately master control for subsequent use, cause master control for subsequent use cannot know which bar resource index list item corresponding be which bar route table items, also just described route table items can not be saved in assigned address according to the resource index list item of correspondence.For solving this problem, primary master control can want according to resource each in resource index table institute the information that records in list item, calculates the positional information of route table items in route information table of correspondence with it, more treated positional information is sent to master control for subsequent use.The advantage of present embodiment, one is that master control for subsequent use directly can obtain the positional information of route table items in route information table, need not recalculate, simplify backup flow process, decrease the probability of makeing mistakes; Two is that master control for subsequent use can be corresponding with route table items by it by the positional information that processed, avoid the master control for subsequent use mentioned above cannot know which bar resource index list item corresponding be the problem of which bar route table items.
In addition, position transmitting element, after sending positional information, also can continue to send route table items.This is because, when primary master control break down cannot work on time, master control for subsequent use will be activated, in order to ensure master control for subsequent use upon actuation, the work of primary master control can be taken over immediately, forward message, primary master control is backed up except sending resource index table to master control for subsequent use, also can send route table items to master control for subsequent use and back up.
Location information mentioned here processes, and can be to set up hash (Hash) pointer gauge, as shown in Figure 3, can add the index pointing to hash pointer gauge in resource index list item; The address of each route table items in store, namely positional information in hash pointer gauge; Same, resource index table call number can be added in route table items.So, master control for subsequent use just can pass through pointer, clearly know which bar resource index list item corresponding be which bar route table items.That is resource index list item is by the hash pointer gauge be made up of the positional information of each route table items, establishes connection with route table items.
Step 105, information receiving unit receives route table items and the positional information of primary master control transmission, preserves the assigned address of described route table items to described route information table according to described positional information.
Due in actual application, message forwarding equipment is E-Packeted by query routing information table, so except wanting resource backup concordance list, also want route stand-by information table, to guarantee that master control for subsequent use is when changing primary master control into and bringing into use, and can E-Packet according to the route information table backed up immediately.
Specifically, master control for subsequent use first receives the resource index block that main control device sends, and described resource index block is formed a resource index table, then receives treated positional information, namely receive hash pointer gauge, and route table items.Main control device according to the sensing of pointer, can know the corresponding relation of each route table items and route table items address, finally according to route table items address, route table items is saved in the assigned address of route information table, thus the route information table that formation one is complete.
In addition, owing to the addition of the index pointing to hash pointer gauge in resource index list item, so master control for subsequent use is when receiving resource index block, only need receives preservation, without the need to sorting to it, thus saving backup flow process, improve the efficiency of backup.
Above-mentioned steps is the process of carrying out resource index table backup between primary, spare master control, during this period, likely there will be and loses the situation such as message, entry updating, cause the resource index table that master control for subsequent use is backed up inaccurate.In order to address this problem, technical scheme provided by the invention ensures the resource index table complete and accurate that master control for subsequent use is backed up by following steps, as shown in Figure 4.
Step 201, the first computing unit, according to resource index table, periodically calculates the first comparative information.
Step 202, detects transmitting element and sends described first comparative information to master control for subsequent use, so that according to the first comparative information, master control for subsequent use confirms that whether the resource index table of backup is accurate.
In a preferred embodiment, described first computing unit comprises the first extraction subelement and first information subelement.Described first extracts the part or all of content that subelement periodically can extract every bar resource index list item in the resource index table of current preservation, using the content that extracts as calculating parameter; Described first information subelement, according to the algorithm preset, by these calculating parameters, calculates the first comparative information.
Such as, the resource index table of the current preservation of primary master control is as shown in table 1.Described first extracts subelement extracts the sequence number of every bar resource index list item as calculating parameter from table 1.Suppose described default algorithm for institute's sequenced and, then the first comparative information that first information subunit computes goes out is 1+2+3=6.Then, detect transmitting element and this first comparative information can be sent to master control for subsequent use.
| Sequence number | Information A | Information B | Information C |
| 1 | aaa | bbb | ccc |
| 2 | a | b | c |
| 3 | aa | bb | cc |
Table 1
Periodicity mentioned here calculates, be developer according to actual conditions sets itself, such as, can start the timer of 20 seconds in primary master control, after timer expiry, the first computing unit then starts to calculate the first comparative information.Such as, and the first extraction subelement can extract the partial content in resource index list item, goes up in example the sequence number only extracting every bar resource index list item, also can extract full content.In addition, in a preferred embodiment, described preset algorithm can be MD5 (MessageDigestAlgorithm, Message Digest Algorithm 5) algorithm.
Step 203, the second computing unit, according to resource backup concordance list, calculates the second comparative information.
Similar with primary master control, the second computing unit in master control for subsequent use also according to the resource index table of the current preservation of master control for subsequent use, can calculate the second comparative information, and its detailed process is identical with the first computing unit, repeats no more herein.Owing to may there is the message dropping for backing up in backup procedure, or resource index table that primary master control is preserved upgrades, thus causes different from primary master control of resource backup concordance list that master control for subsequent use is preserved.Such as, the resource backup concordance list of the current preservation of master control for subsequent use is as shown in table 2, and extract sequence number in every bar resource index list item, described preset algorithm is the same with the preset algorithm that described first computing unit uses, namely institute's sequenced and, so the second comparative information is 1+2+3+4=10.
| Sequence number | Information A | Information B | Information C |
| 1 | aaa | bbb | ccc |
| 2 | a | b | c |
| 3 | aa | bb | cc |
| 4 | aaaa | bbbb | cccc |
Table 2
Step 204, when receiving the first comparative information that primary master control sends, described first comparative information and described second comparative information compare by information contrast unit, when the two is inconsistent, confirm that the resource index table of backup is inaccurate, send request message to primary master control, resend resource index block to master control for subsequent use to make primary master control.
Because the first computing unit is identical with the preset algorithm that the second computing unit uses, so when the parameter being used for calculating is the same, its result obtained also is the same.That is, if primary master control is consistent with resource index table current preserved in master control for subsequent use, the calculating parameter then extracted according to the resource index table of preserving separately is also consistent, and the first comparative information so obtained and the second comparative information are also necessarily consistent.When the two is inconsistent, then illustrate resource backup concordance list that master control for subsequent use is preserved and primary master control inconsistent, namely resource backup concordance list is inaccurate.Such as, calculate the first comparative information and the second comparative information respectively by table 1 and table 2, the two is inconsistent, and resource backup concordance list is described, namely table 2 is inaccurate, should re-start backup, to be consistent with the resource index table of preserving in primary master control.
Therefore, information contrast unit, when comparing result is inconsistent, can send request message to primary master control, resends resource index block to master control for subsequent use to make primary master control.
Step 205, index retransmission unit receives the request message that master control for subsequent use sends when confirming that the resource index table of backup is inaccurate, and described resource index block is sent to master control for subsequent use.
From above-mentioned steps, primary master control periodically can send the first comparative information to master control for subsequent use, to verify resource backup concordance list that master control for subsequent use has been preserved whether complete and accurate.Same, master control for subsequent use also can calculate the resource backup concordance list (see table 2) self preserved according to same algorithm, obtains the second comparative information.When both are inconsistent, illustrate that the resource index table that resource backup concordance list and primary master control that master control for subsequent use is preserved are preserved is inconsistent, the resource backup concordance list namely master control for subsequent use preserved is imperfect inaccurate.In order to ensure the complete and accurate of resource backup concordance list, master control for subsequent use when comparing result is inconsistent, can send request message to primary master control.Resource index block, after receiving this request message, can resend to master control for subsequent use by primary master control.
Here it should be noted that, in a preferred embodiment, resource index block, after receiving the request message that master control for subsequent use sends, just resends and backs up to master control for subsequent use, route table items is not sent to master control for subsequent use simultaneously by primary master control.Back up to stand-by equipment because if both resource index table and route information table are all resend, a large amount of network transmission resource can be taken, cause waste.And route information table is when backing up, occur that the probability of mistake is in fact very low, such as, 10000 route table items are backed up, may occur that at most backup mistake occurs 2 to 3 route table items, so when this master control for subsequent use is converted to primary master control, only when forwarding relates to the message of these 2 to 3 wrong route table items, just can occur to forward mistake, most message still can normally forward, and route information table occurs that the probability of the route table items of a large amount of backup mistake is smaller, so several wrong route table items mistakes, substantially the normal forwarding of message is not affected.In addition, route information table regularly can carry out the aging update of route table items, therefore, even if there are several wrong route table items in route information table, also can be very fast be aging renewal, can not E-Packet on message forwarding equipment and produce impact for a long time.Resource index table is then different, as long as there is a resource index list item to occur mistake in resource index table, just may causes whole route information table align-err, and then affect message repeating.Therefore, in a preferred embodiment, primary master control is after receiving the request message that master control for subsequent use sends, usually only resource index block is resend to master control for subsequent use, master control for subsequent use is after receiving resource index block, can resource index table be reassembled into, i.e. resource backup concordance list, thus be reached the object of resource backup concordance list again.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (12)
1. a method for resource backup, is applied in the primary master control of electronic equipment, and resource index table is preserved in described primary master control, and described electronic equipment also comprises master control for subsequent use, it is characterized in that, described method comprises:
Described resource index table is decomposed at least one resource index block, sends described resource index block to master control for subsequent use, generate the resource index table of backup to make described master control for subsequent use according to described resource index block;
According to resource index table, periodically calculate the first comparative information;
Send described first comparative information to master control for subsequent use, so that according to the first comparative information, master control for subsequent use confirms that whether the resource index table of described backup is accurate;
When receiving the request message that master control for subsequent use sends when confirming that the resource index table of backup is inaccurate, described resource index block is resend to master control for subsequent use.
2. method according to claim 1, it is characterized in that, at least one route table items is preserved in described primary master control, and described method also comprises:
According to described resource index table, calculate the positional information of every bar route table items in route information table;
Send described positional information and the extremely master control for subsequent use of described route table items, so that master control for subsequent use preserves the assigned address of described route table items to described route information table according to described positional information.
3. method according to claim 2, it is characterized in that, described according to described resource index table, the positional information calculating every bar route table items is specially:
Obtain the resource index list item comprised in described resource index table, described resource index list item and described route table items one_to_one corresponding;
According to the information in described resource index list item, calculate the route table items positional information in route information table corresponding with described resource index list item.
4. method according to claim 1, is characterized in that, described according to resource index table, calculates the first comparative information and is specially:
From every bar resource index list item, extract part or all of content, as calculating parameter;
According to the algorithm preset, by described calculating parameter, calculate the first comparative information.
5. a method for resource backup, be applied in the master control for subsequent use of electronic equipment, described electronic equipment also comprises primary master control, it is characterized in that, described method comprises:
Receive the resource index block that primary master control sends, described resource index block is at least one index block that the resource index table of preservation resolves into by described primary master control;
Described resource index block is combined as the resource index table of backup and preserves;
According to the resource index table of backup, calculate the second comparative information;
When receiving the first comparative information that primary master control sends, described first comparative information and described second comparative information are compared;
When confirming that the resource index table of backup is inaccurate according to comparative result, sending request message to primary master control, resending resource index block to master control for subsequent use to make primary master control.
6. method according to claim 5, it is characterized in that, described method also comprises:
Receive positional information and the route table items of primary master control transmission, preserve the assigned address of described route table items to described route information table according to described positional information.
7. a device for resource backup, is applied in the primary master control of electronic equipment, and resource index table is preserved in described primary master control, and described electronic equipment also comprises master control for subsequent use, it is characterized in that, described device comprises:
Index transmitting element, for described resource index table is decomposed at least one resource index block, sends described resource index block to master control for subsequent use, generates the resource index table of backup to make described master control for subsequent use according to described resource index block;
First computing unit, for according to resource index table, periodically calculates the first comparative information;
Detect transmitting element, for sending described first comparative information to master control for subsequent use, so that according to the first comparative information, master control for subsequent use confirms that whether the resource index table of described backup is accurate;
Index retransmission unit, for when the request message receiving master control for subsequent use transmission when confirming that the resource index table of backup is inaccurate, resends described resource index block to master control for subsequent use.
8. device according to claim 7, it is characterized in that, at least one route table items is preserved in described primary master control, and described device also comprises:
Position calculation unit, for according to described resource index table, calculates the positional information of every bar route table items in route information table;
Position transmitting element, for sending described positional information and the extremely master control for subsequent use of described route table items, so that master control for subsequent use preserves the assigned address of described route table items to described route information table according to described positional information.
9. device according to claim 8, it is characterized in that, described position calculation unit comprises:
Obtain subelement, for obtaining the resource index list item comprised in described resource index table, described resource index list item and described route table items one_to_one corresponding;
Computation subunit, for according to the information in described resource index list item, calculates the route table items positional information in route information table corresponding with described resource index list item.
First sends subelement, for periodically sending described first comparative information to master control for subsequent use, so that according to the first comparative information, master control for subsequent use confirms that whether the resource index table of backup is accurate.
10. device according to claim 7, it is characterized in that, described first computing unit comprises:
First extracts subelement, for from every bar resource index list item, extracts part or all of content, as calculating parameter;
First information subelement, for according to the algorithm preset, by described calculating parameter, calculates the first comparative information.
The device of 11. 1 kinds of resource backups, be applied in the master control for subsequent use of electronic equipment, described electronic equipment also comprises primary master control, it is characterized in that, described device comprises:
Index receiving element, for receiving the resource index block that primary master control sends, described resource index block is combined as resource backup concordance list and preserves, and described resource index block is at least one index block that the resource index table of preservation resolves into by described primary master control;
Second computing unit, for the resource index table according to backup, calculates the second comparative information;
Information contrast unit, for when receiving the first comparative information that primary master control sends, compares described first comparative information and described second comparative information;
Resending unit, when confirming that the resource index table of backup is inaccurate according to comparative result, sending request message to primary master control, resend resource index block to master control for subsequent use to make primary master control.
12., according to device described in claim 11, is characterized in that, described device also comprises:
Information receiving unit, for receiving route table items and the positional information of primary master control transmission, preserves the assigned address of described route table items to described route information table according to described positional information.
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| CN107547364A (en) * | 2017-08-15 | 2018-01-05 | 新华三技术有限公司 | Route sending-down method, device and the network equipment |
| CN108667635A (en) * | 2017-03-27 | 2018-10-16 | 腾讯科技（深圳）有限公司 | A kind of method, equipment and the system of disaster tolerance processing |
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| CN102510408A (en) * | 2011-11-30 | 2012-06-20 | 武汉烽火网络有限责任公司 | Method for realizing TCP (transmission control protocol) application main and standby changeover |
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| CN107547364A (en) * | 2017-08-15 | 2018-01-05 | 新华三技术有限公司 | Route sending-down method, device and the network equipment |
| CN111211927A (en) * | 2019-12-31 | 2020-05-29 | 杭州迪普科技股份有限公司 | Resource synchronization method and device |
| CN113114574A (en) * | 2021-03-30 | 2021-07-13 | 杭州迪普科技股份有限公司 | Message forwarding method and device |
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