CN103870362A - Data recovery method, data recovery device and backup system - Google Patents
Data recovery method, data recovery device and backup system Download PDFInfo
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- CN103870362A CN103870362A CN201410109548.XA CN201410109548A CN103870362A CN 103870362 A CN103870362 A CN 103870362A CN 201410109548 A CN201410109548 A CN 201410109548A CN 103870362 A CN103870362 A CN 103870362A
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Abstract
The embodiment of the invention discloses a data recovery method, a data recovery device and a backup system which are applied to the technical field of information processing. When carrying out data recovery, the data recovery device disclosed by the embodiment can know which data blocks are updated and which data blocks need to be recovered mainly by judging whether a second data block in the currently latest second version is consistent to a first data block at the corresponding position in a first version without recovering data blocks of a target disk in a host or storage equipment or all data blocks stored on a virtual machine of the host, so that recovered data in the data recovery process can be reduced, and thus, data recovery time is shortened; and meanwhile, a backup server does not need to transmit data blocks of the integral disk with the host or the storage equipment and also does not need to transmit all the data blocks stored on the virtual machine with the host, so that the volume of data transmitted between the backup server and the host in the embodiment is reduced.
Description
Technical field
The present invention relates to technical field of information processing, particularly data reconstruction method, device and standby system.
Background technology
Standby system is the function system with backup-and-restore, is mainly for the data in backup production main frame, if the loss of data in main frame need to be carried out data recovery, makes main frame return to not obliterated data state before.Normally data in the backup set of a certain version in standby system are extracted from standby system, be then all written in main frame, the object of recovering to realize data.
In existing data recovery procedure, need to do the overall recovery of disk, re-write on former disk by the total data in target disk, like this by have a large amount of data by Internet Transmission in the storage of main frame, make to take a long time could realize data recover process.
Summary of the invention
The embodiment of the present invention provides data reconstruction method, device and standby system, has reduced the data of recovering when data are recovered.
Embodiment of the present invention first aspect provides a kind of data reconstruction method, comprising:
Receive data recovery request, described data recovery request comprises the versions of data information of ask recovery;
If a certain the second data block in the second current version, inconsistent with the first data block of correspondence position in the corresponding first version of described versions of data information, the positional information of described the first data block and described the first data block is sent to main frame or memory device, to make described main frame or memory device replace the indicated position of positional information described in described the second version the second data block by described the first data block to carry out data recovery.
In the first possibility implementation of embodiment of the present invention first aspect, the described positional information by described the first data block and described the first data block also comprises before sending to main frame:
Obtain respectively data fingerprint corresponding to the second data block in data fingerprint corresponding to the first data block in the corresponding first version of described versions of data information and current the second version;
If data fingerprint corresponding to a certain the second data block in described the second version, the data fingerprint corresponding with the first data block of correspondence position in first version is inconsistent, a certain the second data block in described the second current version, inconsistent with the first data block of correspondence position in the corresponding first version of described versions of data information.
In conjunction with the first possibility implementation of embodiment of the present invention first aspect, in the second possibility implementation of embodiment of the present invention first aspect, before described reception data recovery request, also comprise:
Obtain data block to be backed up, and the data fingerprint of described data block to be backed up;
Described data block to be backed up is stored into described first version data block, and store the index information of each data block in described first version, described index information comprises position and the data fingerprint of described data block to be backed up.
In conjunction with the second possibility implementation of embodiment of the present invention first aspect, in the third possibility implementation of embodiment of the present invention first aspect:
If in described first version a certain the first data block and the third edition that stored in backup server in this 3rd data block of correspondence position identical, describedly described data block to be backed up is stored into described first version data block specifically comprise: store the first redirection information of described a certain the first data block, described the first redirection information is for being redirected to a certain described first version the first data block the 3rd data block of described third edition correspondence position in this; And/or,
If in described first version a certain the first data block and the third edition that stored in backup server in this 3rd data block of correspondence position identical, the index information of a certain first data block of the described first version of described storage specifically comprises: store the second redirection information of the index information of a certain the first data block described in described first version, described the second redirection information is for being redirected to the index information of a certain described first version the first data block the index information of the 3rd data block of correspondence position in described third edition basis.
Embodiment of the present invention second aspect provides a kind of data reconstruction method, comprising:
Send data recovery request to backup server, described data recovery request comprises the versions of data information of ask recovery;
Receive the first data block of described backup server transmission and the positional information of described the first data block, replace the second data block of the indicated position of institute's positional information in the second current version by described the first data block to carry out data recovery;
Wherein, the positional information of described the first data block and the first data block is a certain the second data block in described the second version, in the corresponding first version of versions of data information comprising with described data recovery request, the first data block of correspondence position when inconsistent, is sent by described backup server.
In the first possibility implementation of embodiment of the present invention second aspect, described transmission data recovery request, to before backup server, also comprises:
Data to be backed up are divided into data block to be backed up according to predetermined size, and calculate the data fingerprint of described data block to be backed up;
The data fingerprint of described calculating and described data block to be backed up are sent to described backup server, to make described backup server that described data block to be backed up is stored into described first version data block, and storing the index information of each data block in described first version, described index information comprises position and the data fingerprint of described data block to be backed up.
The embodiment of the present invention third aspect provides a kind of Data Recapture Unit, comprising:
Request reception unit, for receiving data recovery request, described data recovery request comprises the versions of data information of ask recovery;
Transmitting element, if for current a certain the second data block of the second version, in the corresponding first version of versions of data information in the data recovery request receiving with described request receiving element, the first data block of correspondence position is inconsistent, the positional information of described the first data block and described the first data block is sent to main frame or memory device, to make described main frame or memory device replace the indicated position of positional information described in described the second version the second data block by described the first data block to carry out data recovery.
In the first possibility implementation of the third aspect of the embodiment of the present invention, described device also comprises:
Fingerprint acquiring unit, for obtaining respectively data fingerprint corresponding to the second data block in data fingerprint corresponding to the first data block in the corresponding first version of the versions of data information that comprises of data recovery request that described request receiving element receives and current the second version;
Described transmitting element, if data fingerprint corresponding to a certain the second data block in the second version obtaining specifically for described fingerprint acquiring unit, the data fingerprint corresponding with the first data block of correspondence position in first version is inconsistent, the positional information of described the first data block and described the first data block is sent to main frame or memory device.
In conjunction with the first possibility implementation of the embodiment of the present invention third aspect, in the second possibility implementation of the embodiment of the present invention third aspect, described device also comprises:
Acquiring unit to be backed up, for obtaining data block to be backed up, and the data fingerprint of described data block to be backed up;
Storage element, store into described first version data block for the data block to be backed up that described acquiring unit to be backed up is obtained, and storing the index information of each data block in described first version, described index information comprises position and the data fingerprint of described data block to be backed up.
In conjunction with the second possibility implementation of the embodiment of the present invention third aspect, in the third possibility implementation of the embodiment of the present invention third aspect:
Described storage element, if specifically for a certain the first data block in described first version and the third edition that stored in described storage element in this 3rd data block of correspondence position identical, store the first redirection information of described a certain the first data block, described the first redirection information is for being redirected to a certain described first version the first data block the 3rd data block of correspondence position in described third edition basis; And/or,
If specifically for a certain the first data block in described first version and the third edition that stored in storage element in this 3rd data block of correspondence position identical, store the second redirection information of the index information of a certain the first data block described in described first version, described the second redirection information is for being redirected to the index information of a certain described first version the first data block the index information of the 3rd data block of correspondence position in described third edition basis.
Embodiment of the present invention fourth aspect provides a kind of Data Recapture Unit, comprising:
Request transmitting unit, for sending data recovery request to backup server, described data recovery request comprises the versions of data information of ask recovery;
Receive recovery unit, for receiving the first data block of described backup server transmission and the positional information of described the first data block, replace the second data block of the indicated position of institute's positional information in the second current version by described the first data block to carry out data recovery;
Wherein, the positional information of described the first data block and the first data block is a certain the second data block in described the second version, in the corresponding first version of versions of data information comprising with described data recovery request, the first data block of correspondence position when inconsistent, is sent by described backup server.
In the one possibility implementation of embodiment of the present invention fourth aspect, described device also comprises:
Fingerprint computing unit, for data to be backed up are divided into data block to be backed up according to predetermined size, and calculates the data fingerprint of described data block to be backed up;
Backup transmitting element, for the data fingerprint of described calculating and described data block to be backed up are sent to described backup server, to make described backup server that described data block to be backed up is stored into described first version data block, and storing the index information of each data block in described first version, described index information comprises position and the data fingerprint of described data block to be backed up.
The embodiment of the present invention the 5th aspect provides a kind of standby system, it is characterized in that, comprises backup server and at least one main frame;
Described backup server is as the embodiment of the present invention third aspect, or the first of the third aspect is to the third arbitrary Data Recapture Unit described in may implementation in may implementation, described main frame is embodiment of the present invention fourth aspect or fourth aspect a kind of Data Recapture Unit described in may implementation.
The embodiment of the present invention the 6th aspect provides a kind of standby system, it is characterized in that, comprises backup server and at least one memory device;
Described backup server is as the embodiment of the present invention third aspect, or the first of the third aspect is to the third arbitrary Data Recapture Unit described in may implementation in may implementation.
Visible, the backup server of the embodiment of the present invention, can travel through all the second data blocks in the second current version, judge that whether the second data block is consistent with the first data block of correspondence position in first version, thereby can know and need to recover which data block, and not need target disk in main frame or memory device, or all data blocks that the virtual machine of main frame stores is recovered, make to reduce the data of recovering when data are recovered, reduced the time that data are recovered; Need between backup server and main frame (or memory device), not transmit the data block of whole disk simultaneously, need between backup server and main frame, not transmit all data blocks in the included virtual machine of main frame, reduce the data volume of transmission between backup server and main frame (or memory device) yet.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 a is the structural representation of the standby system that in the embodiment of the present invention, data reconstruction method is applied to Fig. 1 c;
Fig. 2 is the process flow diagram of a kind of data reconstruction method of carrying out of the backup server side that provides of the embodiment of the present invention;
Fig. 3 is the process flow diagram of the another kind of data reconstruction method carried out of the backup server side that provides of the embodiment of the present invention;
Fig. 4 is the process flow diagram of the performed a kind of data reconstruction method of the main frame that provides of the embodiment of the present invention;
Fig. 5 is the process flow diagram of the performed another kind of data reconstruction method of the main frame that provides of the embodiment of the present invention;
Fig. 6 a is the schematic diagram of backup server data block in moment 1 backup host in the embodiment of the present invention;
Fig. 6 b is the schematic diagram of backup server data block in moment 2 backup host in the embodiment of the present invention;
Fig. 6 c is another schematic diagram of backup server data block in moment 2 backup host in the embodiment of the present invention;
Fig. 6 d is another schematic diagram of backup server data block in moment 2 backup host in the embodiment of the present invention;
Fig. 7 is the schematic diagram that in the embodiment of the present invention, main frame recovers data;
Fig. 8 is the structural representation of a kind of Data Recapture Unit of providing of the embodiment of the present invention;
Fig. 9 is the structural representation of the another kind of Data Recapture Unit that provides of the embodiment of the present invention;
Figure 10 is the structural representation of a kind of backup server of providing of the embodiment of the present invention;
Figure 11 is the structural representation of the another kind of Data Recapture Unit that provides of the embodiment of the present invention;
Figure 12 is the structural representation of a kind of main frame of providing of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Term " first " in instructions of the present invention and claims and above-mentioned accompanying drawing, " second ", " the 3rd " " 4th " etc. (if existence) are for distinguishing similar object, and needn't be used for describing specific order or precedence.The data that should be appreciated that such use suitably can exchanged in situation, so as embodiments of the invention described herein if with except diagram here or describe those order enforcement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, for example, those steps or unit that process, method, system, product or the equipment that has comprised series of steps or unit is not necessarily limited to clearly list, but can comprise clearly do not list or for these processes, method, product or equipment intrinsic other step or unit.
The embodiment of the present invention provides a kind of data reconstruction method, mainly can be applied to if Fig. 1 a is in the standby system as shown in Fig. 1 c, comprise backup server and multiple main frame at the standby system shown in Fig. 1 a, wherein, respectively and between backup server, carry out network service and be connected, backup server is mainly used to the data on disk in backup host to each main frame; In main frame, can move backup client, user can initiate by this backup client the flow process of data backup to backup server, and the flow process of data recovery.In another case, in main frame, can not move backup client, but comprise multiple virtual machines, backup server can back up the data on each virtual machine.
Comprise backup server and multiple memory device at standby system as shown in Figure 1 b, backup server carries out Internet Transmission with regard to not needing to adopt between main frame like this, and just transmit in accumulation layer and memory device, initiatively the data block on memory device is backed up by backup server.In this case, need on memory device, provide the interface between server.
Comprise backup server, at least one memory device and back-up storage at the standby system as shown in Fig. 1 c, wherein memory device and back-up storage are all connected to backup server, and backup server is received the data of memory device transmission and backed up by accumulation layer for controlling back-up storage.
The method of the present embodiment is the performed method of the backup server in standby system, and process flow diagram as shown in Figure 2, comprising:
Be appreciated that, backup server can regularly or aperiodically also back up to main frame or memory device active obtaining data, or the data that backup client sends in Receiving Host passively back up, and because the data that store in main frame or memory device can constantly change, backup server will be different in the data of not obtaining in the same time like this, and the data of at a time backup server backup are the data of a version.
As shown in Figure 1a in the situation that, user can initiate the flow process that data are recovered by the backup client of moving in main frame, make backup client send data recovery request to backup server, or user initiate the virtual machine of main frame to carry out Data Recovery Process by operation backup server; And as shown in Fig. 1 b and Fig. 1 c in the situation that, user can initiate Data Recovery Process by operation backup server, the data on memory device are recovered.This data recovery request is for asking backup server to return to the data of some versions of this backup server backup to main frame or memory device, in data recovery request, specifically can comprise the information of the data that need to recover which moment etc., i.e. above-mentioned versions of data information.
Wherein, as shown in Fig. 1 a and Fig. 1 b in the situation that, the second data block of the second current version refers to the data block on target disk or the virtual machine of the up-to-date backup of backup server, as shown in Fig. 1 c in the situation that, the second data block of the second current version refers to the data block on the target disk of up-to-date backup in back-up storage; And correspondence position refers to the position consistent with the second data block in the second version in above-mentioned first version, such as being all in the positions such as beginning or ending.
In the present embodiment, backup server is in the time carrying out data backup, by the target disk of main frame or memory device, or the data that at a time store of virtual machine in main frame are divided into according to preset size, and multiple data blocks back up, and in the time of each data block of backup, need to store the data fingerprint of each data block, wherein this data fingerprint can the some data blocks of unique identification, specifically data block necessarily can be calculated to this data fingerprint, such as data block is passed through after hash algorithm verification, generate can this data block of unique identification cryptographic hash, this cryptographic hash is data fingerprint.
In the present embodiment, can obtain respectively data fingerprint corresponding to the second data block in data fingerprint corresponding to the first data block in the corresponding first version of versions of data information and current the second version, then by the data fingerprint of the first data block in the first version obtaining, compare with the data fingerprint of the second data block in the second version, if the data fingerprint that in the second version, data fingerprint corresponding to a certain the second data block is corresponding with the first data block of correspondence position in first version is inconsistent, a certain the second data block in the second current version, in first version corresponding to versions of data information, the first data block of correspondence position is inconsistent.Here can got after the data of main frame or memory device by backup server, carry out computational data fingerprint, or the data fingerprint having calculated that directly Receiving Host sends.
Wherein, the data block in each version is divided according to same rule, and such as all dividing according to preset size, the number of the data block that each like this version comprises is the same.
It should be noted that, above-mentioned the first data block and the second data block do not represent to have the data block of ordinal relation, in the present embodiment, data block in first version is all called to the first data block, data block in the second version is all called the second data block, here " first " and " second " are for the data block in different editions is described, and the rest may be inferred.
The positional information of one of them data block can be used to refer to the target disk of this data block at main frame or memory device, or indicate the position of this data block in the included virtual machine of main frame, the general numbering that adopts data block represents, the numbering that position of this data block is this data block and the product of data block size.And it should be noted that, carrying out above-mentioned steps 102 and at 103 o'clock, can work as and determine that when the data fingerprint of some data blocks is inconsistent, just this data block is sent to main frame or memory device by horse back; Or determine after the inconsistent all data blocks of data fingerprint of data block in the second version and first version, then these all inconsistent first data blocks are sent to main frame or memory device.
Visible, by the cycling of step 102 and 103, can travel through all the second data blocks in the second current version, judge that whether the second data block is consistent with the first data block of correspondence position in first version, thereby can know and need to recover which data block, and not need target disk in main frame or memory device, or all data blocks that the virtual machine of main frame stores is recovered, make to reduce the data of recovering when data are recovered, reduced the time that data are recovered; Need between backup server and main frame (or memory device), not transmit the data block of whole disk simultaneously, need between backup server and main frame, not transmit all data blocks in the included virtual machine of main frame, reduce the data volume of transmission between backup server and main frame (or memory device) yet.
It should be noted that, above-mentioned steps 101 to 103 is when backup server performed method in data recovery procedure, this just needs the step of backup server executing data backup before above-mentioned steps 101, so that follow-up data recovery procedure, particularly, backup server can be realized data backup as follows, and process flow diagram as shown in Figure 3, comprising:
Wherein, if in first version a certain the first data block and the third edition that stored in this backup server in this 3rd data block of correspondence position identical, in order to repeat to store identical information, in this first data block is stored into first version when some the first data blocks, can store the first redirection information of this first data block, this first redirection information is for being redirected to this first data block of first version the 3rd data block of correspondence position in third edition basis.
Further, in the time storing the index information of this first data block, specifically can store the second redirection information of the index information of this first data block in first version, this second redirection information is for being redirected to the index information of this first data block of first version the index information of the 3rd data block of correspondence position in third edition basis.
Just can, by the data that store on the target disk of any one moment main frame or memory device, store into an edition data piece by above-mentioned steps 105 and 106 like this.
It should be noted that, if under the scene as shown in Fig. 1 c time, backup server is specifically stored into the data block to be backed up of obtaining in back-up storage, and stores into first version data block.
The embodiment of the present invention also provides another kind of data reconstruction method, mainly can be applied in standby system as shown in Figure 1a, and the method for the present embodiment is the method performed by the main frame in standby system, and process flow diagram as shown in Figure 4, comprising:
Be appreciated that the backup client that user moves in can operating host, initiate the flow process that data are recovered, user can select the data of recovering some moment to recover; Or be under virtualized environment at main frame, in the time that Host Detection arrives the loss of data of some virtual machine, can initiatively initiate the flow process that data are recovered, and recover the data in a certain moment before according to preset strategy.When backup server is receiving after data recovery request, just can recover flow process according to above-mentioned steps 101 to 103 executing datas, and the data block of needs recovery and the positional information of data block are sent to main frame like this, not repeat at this.
Wherein, the positional information of this first data block and the first data block is a certain edition data piece in the second version, when in the corresponding first version of versions of data information comprising with described data recovery request, the data fingerprint of the first data block of correspondence position is inconsistent, sent by described backup server.Here the first data block and the second data block do not represent to have the data block of ordinal relation, in the present embodiment, data block in first version is all called to the first data block, data block in the second version is all called the second data block, and " first " here and " second " are for the data block in different editions is described.
Visible, in data reconstruction method in the present embodiment, in the time that main frame is initiated Data Recovery Process, by backup server, the positional information of the first data block changing and the first data block is returned to main frame, allow main frame recover these the first data blocks, and do not need all data blocks to storing on target disk in main frame or virtual machine to recover, make to reduce the data of recovering when data are recovered, and then reduced the time that data are recovered; Simultaneously need to, transmitting all data that store on the data block of whole disk or virtual machine between backup server and main frame, not reduce the data volume of transmitting between backup server and main frame.
It should be noted that, above-mentioned steps 201 to 202 is performed methods of main frame in data recovery procedure, and before data are recovered, main frame can carry out data backup by following step, and reference diagram as shown in Figure 5, comprising:
The data reconstruction method that the embodiment of the present invention is described with a specific embodiment below, the data reconstruction method in the present embodiment is applied in standby system as shown in Figure 1a, and in main frame, operation has backup client, particularly:
One, in the time carrying out data backup
(1) user initiates the backup flow process to data on moment 1 target disk by the backup client of moving in main frame, main frame can be divided into multiple data blocks according to the data that store in preset large young pathbreaker's target disk, specifically can as shown in Figure 6 a, the data in target disk be divided into 5*7 data block (a dotted line frame in Fig. 6 a is a data block); Then calculate the data fingerprint of target disk in each data block in moment 1, and each data block of this moment 1 target disk and data fingerprint corresponding to each data block are transferred to backup server back up.
Backup server can store into version 1 data block by each data block on moment 1 target disk, and backup server also will store index information corresponding to each data block, comprise that at index information the data fingerprint of data block and positional information are such as information such as numberings.
(2) data that store on target disk are in continuous variation, the backup client of moving in main frame can be initiated according to preset strategy the backup flow process of data on moment 2 target disk, backup client obtains after each data block of moment 2 target disk and the data fingerprint of each data block, sends to backup server.
Shown in figure 6b and 6c, due between moment 1 to the moment 2, on target disk except the data block of data block 1 and 2 positions, the data block of other position does not all change, backup server is in the time storing into version 2 data block by each data block of moment 2 target disk, can store the data block of data block 1 and 2 positions after changing, and store the redirection information of other data block, these data blocks are redirected to respectively to the data block of correspondence position in version 1; Store the index information of the data block 1 and 2 after changing simultaneously, and store the redirection information of the index information of other data block, the index information of other data block is redirected to the index information of the data block of correspondence position in version 1.In the time storing version 2 data block, just can repeat to store identical information like this.
Wherein, in the index information of some data blocks, can comprise numbering and the data fingerprint of this data block, come the position of designation data piece by the numbering of data block, be specially data block and divide block size (preset value) × data block numbering.For example, suppose, according to 4MB, target disk is carried out to piecemeal, data block is from 0 open numbering, and on first position, the position of data block is that start address is 0 position; On second position, data block is numbered 1, on second position, the position of data block is that start address is the position of 4*1, if the logic addressed block of first data block (Logical Block Addressing, LBA) be 0～(4*1024*1024-1), second data block be just from 4*1024*1024, and 4194304.
(3) data that store on target disk are in continuous variation, the backup client of moving in main frame can be initiated according to preset strategy the backup flow process of data on moment 3 target disk, backup client obtains after each data block of moment 3 target disk and the data fingerprint of each data block, sends to backup server.
Shown in figure 6d, due between moment 2 to the moment 3, on target disk except data block 2 and 3 positions, the data block of other position does not all change, backup server is in the time storing into version 3 data block by each data block of moment 3 target disk, can store data block 2 and the 3 locational data blocks after changing, and the redirection information of storage data piece 1, data block 1 is redirected to the data block of correspondence position in version 1, and store the redirection information of other position data piece, these data blocks are redirected to respectively to the data block of correspondence position in version 2, store the index information of the data block 2 and 3 after changing simultaneously, and the redirection information of storage data piece 1, the index information of data block 1 is redirected to the index information of the data block of correspondence position in version 1, and store the redirection information of the index information of other position data piece, the index information of other data block is redirected to the index information of the data block of correspondence position in version 2.
Two, in the time carrying out data recovery
User is by the backup client of moving in operating host, initiates the flow process that data are recovered, and requires backup server to recover the data on the target disk of moment 2 main frame, and backup client can send data recovery request to backup server.
Shown in figure 7, backup server can obtain the data fingerprint of each data block in the edition 4 of host object disk of up-to-date backup, and the data fingerprint of each data block in the version 2 in moment 2, the data fingerprint of the data fingerprint of edition 4 data block and version 2 data block is compared, show that to only have data block 2,3,4 and 5 locational data blocks inconsistent, by 2 to the 5 locational data blocks of data block in version 2, and the position of these data blocks sends to main frame; The backup client of main frame operation is according to the position of the data block receiving, and data block 2 to 5 replacements that 2 to 5 use of the data block when in front disk can be received, recover to realize data.
Visible, can realize by backup and the recovery of above-mentioned data:
1, in the time that data are recovered, can between backup server and main frame, transmit the differentiated data block of tool, and be recovered by main frame, and need not transmit the data block on whole disk, improve the data of standby system and recovered efficiency.
2, take decline for the bandwidth resources between backup server and main frame, leave bandwidth resources for other business and use, reduced the impact on other business.
3, main frame, in the time that data are recovered, is only written to differentiated tool data block in disk and carries out data recovery, has reduced the initiation number of times to disk read-write transmission, reduces disk loss, has reduced disk unit in rejuvenation simultaneously and has damaged the secondary damage causing.
The embodiment of the present invention provides a kind of Data Recapture Unit, is mainly above-mentioned backup server, and its structural representation of the present embodiment as shown in Figure 8, comprising:
Transmitting element 12, if for current a certain the second data block of the second version, in the corresponding first version of versions of data information in the data recovery request receiving with described request receiving element 10, the first data block of correspondence position is inconsistent, the positional information of described the first data block and described the first data block is sent to main frame or memory device, to make described main frame or memory device replace the indicated position of positional information described in described the second version the second data block by described the first data block to carry out data recovery.
Visible, at the Data Recapture Unit of the present embodiment carrying out data while recovering, if a certain the second data block in the second current version, inconsistent with the first data block of correspondence position in first version, thereby can know which data block upgraded, which need to recover data block, and do not need target disk in main frame or memory device, or all data blocks storing on the virtual machine of main frame is recovered, make to reduce the data of recovering when data are recovered, reduced further the time that data are recovered; Simultaneously transmitting element 12 does not need to transmit the data block of whole disk between main frame or memory device, does not also need all data blocks of storing with main frame transfer of virtual machine, has reduced the data volume of transmitting between the Data Recapture Unit of the present embodiment and main frame.
Shown in figure 9, in a specific embodiment, Data Recapture Unit, except comprising the structure shown in Fig. 8, can also comprise fingerprint acquiring unit 11, acquiring unit to be backed up 13 and storage element 14, wherein:
Acquiring unit 13 to be backed up, for obtaining data block to be backed up, and the data fingerprint of described data block to be backed up; This acquiring unit 13 to be backed up can obtain from main frame or memory device.
Wherein, storage element 14, if the 3rd data block of correspondence position is identical in the third edition having stored with storage element 14 in this Data Recapture Unit specifically for a certain the first data block in described first version basis, store the first redirection information of described a certain the first data block, described the first redirection information is for being redirected to a certain described first version the first data block the 3rd data block of correspondence position in described third edition basis, and/or, if the 3rd data block of correspondence position is identical in the third edition having stored with storage element 14 in this Data Recapture Unit specifically for a certain the first data block in described first version basis, the index information of a certain the first data block of the described first version of described storage specifically comprises: the second redirection information that stores the index information of a certain the first data block described in described first version, described the second redirection information is for being redirected to the index information of a certain described first version the first data block the index information of the 3rd data block of correspondence position in described third edition basis.
In the present embodiment, when fingerprint acquiring unit 11 obtains after data fingerprint, transmitting element 12, if data fingerprint corresponding to a certain the second data block in the second version obtaining specifically for described fingerprint acquiring unit 11, the data fingerprint corresponding with the first data block of correspondence position in first version is inconsistent, the positional information of described the first data block and described the first data block is sent to main frame or memory device.And just can be by the target disk of any one moment main frame or memory device by acquiring unit 13 to be backed up and storage element 14 in the present embodiment, or the data that store on the virtual machine of main frame, an edition data piece stored into.
A kind of backup server is also provided in the present embodiment, and structural representation as shown in figure 10, comprises the processor 21, transmitter 22 and the receiver 23 that are connected respectively in bus, and can also comprise the storer 24 being connected in bus, wherein:
In storer 24, be used for storing the data that receive from receiver 23, and can also store the information such as necessary file of processor 21 deal with data; Transmitter 22 is ports that backup server is communicated by letter with miscellaneous equipment with receiver 23.
Further, processor 21 is also for obtaining data block to be backed up, and the data fingerprint of described data block to be backed up; The data block to be backed up that described storer 24 obtains described processor 21 stores into described first version data block, and storing the index information of each data block in described first version, described index information comprises position and the data fingerprint of described data block to be backed up.
Wherein, if the 3rd data block of correspondence position is identical in the third edition that during this storer 24 is a certain specifically for described first version, the first data block has stored with this storer 24 basis, store the first redirection information of described a certain the first data block, described the first redirection information is for being redirected to a certain described first version the first data block the 3rd data block of correspondence position in described third edition basis; And/or, if the 3rd data block of correspondence position is identical in the third edition having stored with this storer 24 specifically for a certain the first data block in described first version basis, the index information of a certain the first data block of the described first version of described storage specifically comprises: store the second redirection information of the index information of a certain the first data block described in described first version, described the second redirection information is for being redirected to the index information of a certain described first version the first data block the index information of the 3rd data block of correspondence position in described third edition basis.
So just can be by the target disk of any one moment main frame or memory device by processor 21 and storer 24, or the data that store on the virtual machine of main frame, an edition data piece stored into.
A kind of Data Recapture Unit is also provided in the present embodiment, i.e. above-mentioned main frame, its structural representation as shown in figure 11, comprising:
Receive recovery unit 31, for receiving the first data block of described backup server transmission and the positional information of described the first data block, replace the second data block of the indicated position of institute's positional information in the second current version by described the first data block to carry out data recovery;
Wherein, the positional information of described the first data block and the first data block is a certain the second data block in described the second version, in the corresponding first version of versions of data information comprising with described data recovery request, the first data block of correspondence position when inconsistent, is sent by described backup server.
In the Data Recapture Unit of the present embodiment, in the time initiating Data Recovery Process, by backup server, the positional information of the first data block changing and the first data block is returned to and receives recovery unit 31, allow Data Recapture Unit recover these data blocks, and do not need the data that store on target disk to this Data Recapture Unit or virtual machine to recover, make to reduce the data of recovering when data are recovered, reduced further the time that data are recovered; All data blocks that simultaneously need to be on the data block or the transfer of virtual machine that transmit whole disk between backup server and this Data Recapture Unit, have reduced the data volume of transmitting between backup server and Data Recapture Unit.
Further, Data Recapture Unit can also comprise fingerprint computing unit 32, for data to be backed up are divided into data block to be backed up according to predetermined size, and calculates the data fingerprint of described data block to be backed up; Backup transmitting element 33, send to described backup server for data fingerprint and described data block to be backed up that described fingerprint computing unit 32 is calculated, to make described backup server that described data block to be backed up is stored into described first version data block, and storing the index information of each data block in described first version, described index information comprises position and the data fingerprint of described data block to be backed up.
A kind of main frame is also provided in the present embodiment, and such as switch or router etc., structural representation as shown in figure 12, comprises the processor 41, transmitter 42 and the receiver 43 that are connected respectively in bus, and can also comprise the storer being connected in bus, wherein:
In storer, be used for storing the data that receive from receiver 43, and can also store the information such as necessary file of processor 41 deal with data; Transmitter 42 is ports that main frame is communicated by letter with miscellaneous equipment with receiver 43.
Further, the processor 41 in main frame is also for data to be backed up are divided into data block to be backed up according to predetermined size, and calculates the data fingerprint of described data block to be backed up; Transmitter 42 also sends to described backup server for data fingerprint and described data block to be backed up that described processor 41 is calculated, to make described backup server that described data block to be backed up is stored into described first version data block, and storing the index information of each data block in described first version, described index information comprises position and the data fingerprint of described data block to be backed up.
The embodiment of the present invention also provides a kind of standby system, structural representation as shown in Figure 1a, mainly can comprise backup server and at least one main frame, wherein, the structure of backup server can be as described in above-mentioned Fig. 8 or 9 the structure of Data Recapture Unit, or the structure of backup server as described in above-mentioned Figure 10; The structure of main frame can be as described in above-mentioned Figure 11 the structure of Data Recapture Unit, the structure of main frame that also can be as described in above-mentioned Figure 12, does not repeat at this.
The embodiment of the present invention also provides another kind of standby system, structural representation as shown in Figure 1 b, mainly can comprise backup server and at least one memory device, wherein, the structure of backup server can be as described in above-mentioned Fig. 8 or 9 the structure of Data Recapture Unit, or the structure of backup server as described in above-mentioned Figure 10, do not repeat at this.
The embodiment of the present invention also provides another kind of standby system, structural representation is as shown in Fig. 1 c, mainly can comprise backup server and at least one memory device and storage backup, wherein, the structure of backup server can be as described in above-mentioned Fig. 8 or 9 the structure of Data Recapture Unit, or the structure of backup server as described in above-mentioned Figure 10, do not repeat at this.Wherein, storage backup is for the data on backup storage device; And backup server is for control store backup and memory device, and the relevant data of backup are all stored in storage backup.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is can carry out the hardware that instruction is relevant by program to complete, this program can be stored in a computer-readable recording medium, and storage medium can comprise: ROM (read-only memory) (ROM), random-access memory (ram), disk or CD etc.
The data reconstruction method, device and the standby system that above the embodiment of the present invention are provided are described in detail, applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (14)
1. a data reconstruction method, is characterized in that, comprising:
Receive data recovery request, described data recovery request comprises the versions of data information of ask recovery;
If a certain the second data block in the second current version, inconsistent with the first data block of correspondence position in the corresponding first version of described versions of data information, the positional information of described the first data block and described the first data block is sent to main frame or memory device, to make described main frame or memory device replace the indicated position of positional information described in described the second version the second data block by described the first data block to carry out data recovery.
2. the method for claim 1, is characterized in that, the described positional information by described the first data block and described the first data block also comprises before sending to main frame or memory device:
Obtain respectively data fingerprint corresponding to the second data block in data fingerprint corresponding to the first data block in the corresponding first version of described versions of data information and current the second version;
If data fingerprint corresponding to a certain the second data block in described the second version, the data fingerprint corresponding with the first data block of correspondence position in first version is inconsistent, a certain the second data block in described the second current version, inconsistent with the first data block of correspondence position in the corresponding first version of described versions of data information.
3. method as claimed in claim 2, is characterized in that, before described reception data recovery request, also comprises:
Obtain data block to be backed up, and the data fingerprint of described data block to be backed up;
Described data block to be backed up is stored into described first version data block, and store the index information of each data block in described first version, described index information comprises position and the data fingerprint of described data block to be backed up.
4. method as claimed in claim 3, is characterized in that,
If in described first version a certain the first data block and the third edition that stored in backup server in this 3rd data block of correspondence position identical, describedly described data block to be backed up is stored into described first version data block specifically comprise: store the first redirection information of described a certain the first data block, described the first redirection information is for being redirected to a certain described first version the first data block the 3rd data block of described third edition correspondence position in this; And/or,
If in described first version a certain the first data block and the third edition that stored in backup server in this 3rd data block of correspondence position identical, the index information of a certain first data block of the described first version of described storage specifically comprises: store the second redirection information of the index information of a certain the first data block described in described first version, described the second redirection information is for being redirected to the index information of a certain described first version the first data block the index information of the 3rd data block of correspondence position in described third edition basis.
5. a data reconstruction method, is characterized in that, comprising:
Send data recovery request to backup server, described data recovery request comprises the versions of data information of ask recovery;
Receive the first data block of described backup server transmission and the positional information of described the first data block, replace the second data block of the indicated position of institute's positional information in the second current version by described the first data block to carry out data recovery;
Wherein, the positional information of described the first data block and the first data block is a certain the second data block in described the second version, in the corresponding first version of versions of data information comprising with described data recovery request, the first data block of correspondence position when inconsistent, is sent by described backup server.
6. method as claimed in claim 5, is characterized in that, described transmission data recovery request, to before backup server, also comprises:
Data to be backed up are divided into data block to be backed up according to predetermined size, and calculate the data fingerprint of described data block to be backed up;
The data fingerprint of described calculating and described data block to be backed up are sent to described backup server, to make described backup server that described data block to be backed up is stored into described first version data block, and storing the index information of each data block in described first version, described index information comprises position and the data fingerprint of described data block to be backed up.
7. a Data Recapture Unit, is characterized in that, comprising:
Request reception unit, for receiving data recovery request, described data recovery request comprises the versions of data information of ask recovery;
Transmitting element, if for current a certain the second data block of the second version, in the corresponding first version of versions of data information in the data recovery request receiving with described request receiving element, the first data block of correspondence position is inconsistent, the positional information of described the first data block and described the first data block is sent to main frame or memory device, to make described main frame or memory device replace the indicated position of positional information described in described the second version the second data block by described the first data block to carry out data recovery.
8. device as claimed in claim 7, is characterized in that, also comprises:
Fingerprint acquiring unit, for obtaining respectively data fingerprint corresponding to the second data block in data fingerprint corresponding to the first data block in the corresponding first version of the versions of data information that comprises of data recovery request that described request receiving element receives and current the second version;
Described transmitting element, if data fingerprint corresponding to a certain the second data block in the second version obtaining specifically for described fingerprint acquiring unit, the data fingerprint corresponding with the first data block of correspondence position in first version is inconsistent, the positional information of described the first data block and described the first data block is sent to main frame or memory device.
9. device as claimed in claim 8, is characterized in that, also comprises:
Acquiring unit to be backed up, for obtaining data block to be backed up, and the data fingerprint of described data block to be backed up;
Storage element, store into described first version data block for the data block to be backed up that described acquiring unit to be backed up is obtained, and storing the index information of each data block in described first version, described index information comprises position and the data fingerprint of described data block to be backed up.
10. device as claimed in claim 9, is characterized in that,
Described storage element, if specifically for a certain the first data block in described first version and the third edition that stored in described storage element in this 3rd data block of correspondence position identical, store the first redirection information of described a certain the first data block, described the first redirection information is for being redirected to a certain described first version the first data block the 3rd data block of correspondence position in described third edition basis; And/or,
If specifically for a certain the first data block in described first version and the third edition that stored in storage element in this 3rd data block of correspondence position identical, store the second redirection information of the index information of a certain the first data block described in described first version, described the second redirection information is for being redirected to the index information of a certain described first version the first data block the index information of the 3rd data block of correspondence position in described third edition basis.
11. 1 kinds of Data Recapture Units, is characterized in that, comprising:
Request transmitting unit, for sending data recovery request to backup server, described data recovery request comprises the versions of data information of ask recovery;
Receive recovery unit, for receiving the first data block of described backup server transmission and the positional information of described the first data block, replace the second data block of the indicated position of institute's positional information in the second current version by described the first data block to carry out data recovery;
Wherein, the positional information of described the first data block and the first data block is a certain the second data block in described the second version, in the corresponding first version of versions of data information comprising with described data recovery request, the first data block of correspondence position when inconsistent, is sent by described backup server.
12. devices as claimed in claim 11, is characterized in that, also comprise:
Fingerprint computing unit, for data to be backed up are divided into data block to be backed up according to predetermined size, and calculates the data fingerprint of described data block to be backed up;
Backup transmitting element, for the data fingerprint of described calculating and described data block to be backed up are sent to described backup server, to make described backup server that described data block to be backed up is stored into described first version data block, and storing the index information of each data block in described first version, described index information comprises position and the data fingerprint of described data block to be backed up.
13. 1 kinds of standby systems, is characterized in that, comprise backup server and at least one main frame, and described backup server is the Data Recapture Unit as described in claim 7 to 10 any one, and described main frame is the Data Recapture Unit as described in claim 11 or 12.
14. 1 kinds of standby systems, is characterized in that, comprise backup server and at least one memory device, and described backup server is the Data Recapture Unit as described in claim 7 to 10 any one.
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