CN101685379A - System and method for reconstructing disk array - Google Patents
System and method for reconstructing disk array Download PDFInfo
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- CN101685379A CN101685379A CN200810198836A CN200810198836A CN101685379A CN 101685379 A CN101685379 A CN 101685379A CN 200810198836 A CN200810198836 A CN 200810198836A CN 200810198836 A CN200810198836 A CN 200810198836A CN 101685379 A CN101685379 A CN 101685379A
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Abstract
The invention discloses a method for reconstructing a disk array, comprising the following steps: matching a plurality of disks with a plurality of identification data with uniqueness respectively, wherein each disk corresponds to single identification data; using an RAID system to generate a disk setting file according to the identification data, wherein the disk setting file comprises a logic sector which is formed by combination of the disks and corresponds to identification data with different disks according to different disks stored with data; mounting the disks on a computer device provided with the RAID system; and mapping the mounted disks on correct disk addresses and reconstructing the data in the disks of the computer device by the computer device according to the disk settingfile. The invention can judge disk sequence to reconstruct data, thus avoiding causing data error.
Description
Technical field
The present invention is relevant for a kind of disc array system, and is particularly to a kind ofly use the computer apparatus of disc array system and change the disk order to rebuild the method for disc array system.
Background technology
Independent disk redundant array (Redundant Array of Independent Disks, abbreviate RAID as) by several disks (for example, hard disk) with serial connection or and the mode that connects form fault-tolerant (or non-fault-tolerant) array system, with as a virtual big disc driver, it can increase access speed, improves data security and the disk tolerance function can be provided.
The type of independent disk redundant array comprises RAID-0, RAID-1, RAID-2, RAID-3, RAID-4, RAID-5 and RAID-6.RAID-5 is called wheel again changes isotype array (Rotating Parity Array), and it is the array system that is set up by the disk more than 3 (for example, hard disk) at least.Use the benefit of RAID-5 system to be and system loading can be scattered on many disks, so that when wherein a disk is damaged, its data still can be rebuild and be kept its integrality.
As mentioned above, in the main frame that uses the RAID-5 system, when a disk was damaged, available another new disk was substituted, and will damage the interior data reconstruction of disk in this new disk.In addition, substitute being restricted to of disk at every turn and once can only substitute a disk, and substituting the disk that falls can't use on other uses the main frame of RAID-5 system, and when the disk in this main frame is all taken away again install according to different order go back after, the RAID-5 system promptly can't judge disk sequence and cause data to recombinate.
In addition, three disks (for example, disk 1, disk 2 and disk 3) are installed in the RAID-5 system, insert as if after disk 2 is removed again, original disk 2 may be recognized into new disk (for example, disk 4) by this RAID-5 system.In addition, after disk 2 was removed, the disk that another is new (for example, disk 5) inserted the position of disk 2, and then this RAID-5 system may be considered as disk 2 with disk 5.Thus, this RAID-5 system can carry out recovery operations to the disk 5 that inserts, i.e. behind the internal storage data of the disk 5 of deletion insertion, utilize the data of disk 1 and 3 to reduce the data of disk 2 again, so can cause error in data.
Therefore, the invention provides a kind of disk order of changing to rebuild the method for disc array system.
Summary of the invention
Based on above-mentioned purpose, the embodiment of the invention has disclosed a kind of disk array reconstruction method, comprises the following steps: the recognition data with respectively corresponding some the tool uniquenesss of some disks, and the corresponding single described recognition data of each disk; Use a RAID system to produce a disk enactment document according to described recognition data, described disk enactment document includes the logic sector that those disk combination form, and described logic sector is distinguished the described recognition data of corresponding different disk according to the disk difference of deposit data; With described disk carry to a computer apparatus, described computer apparatus possesses described RAID system; And described computer apparatus is according to described disk enactment document, and the described disk image of carry to correct disk address, and is rebuild data in the described disk in described computer apparatus.
The embodiment of the invention has more disclosed a kind of disk array reconstruction system, comprising:
One corresponding unit, described corresponding unit are with the recognition data of respectively corresponding some the tool uniquenesss of some disks, and the corresponding single described recognition data of each disk; One generation unit, described generation unit uses a RAID system to produce a disk enactment document according to described recognition data, described disk enactment document includes the logic sector that those disk combination form, and described logic sector is distinguished the described recognition data of corresponding different disk according to the disk difference of deposit data; An and reconstruction unit, when described reconstruction unit possesses the computer apparatus of described RAID system in described disk carry to, described computer apparatus is according to described disk enactment document, the described disk image of carry to correct disk address, and is rebuild data in the described disk in described computer apparatus.
The present invention can judge disk sequence with recombination data, thereby can avoid causing the mistake of data.
Description of drawings
Fig. 1 shows the configuration diagram of first embodiment of the invention.
Fig. 2 shows another configuration diagram of first embodiment of the invention.
Fig. 3 shows the another configuration diagram of first embodiment of the invention.
Fig. 4 shows the configuration diagram of second embodiment of the invention.
Fig. 5 shows the schematic flow sheet of third embodiment of the invention.
Fig. 6 shows the schematic flow sheet of fourth embodiment of the invention.
Fig. 7 shows the schematic flow sheet of fifth embodiment of the invention.
Fig. 8 shows the schematic flow sheet of sixth embodiment of the invention.
Embodiment
For allow the present invention purpose, feature, and advantage can become apparent, detailed explanation is done in preferred embodiment cited below particularly, and cooperate appended graphic Fig. 1 to Fig. 8.Instructions of the present invention provides different embodiment that the technical characterictic of the different embodiments of the present invention is described.Wherein, the usefulness that is configured to explanation of each element among the embodiment is not in order to restriction the present invention.And the partly repetition of reference numerals for the purpose of simplifying the description, is not the relevance that means between the different embodiment among the embodiment.
Fig. 1 shows the configuration diagram of first embodiment of the invention.Fig. 2 shows another configuration diagram of first embodiment of the invention.
The disk array reconstruction system of first embodiment of the invention comprises a corresponding unit 10, a generation unit 20, and a reconstruction unit 30.In present embodiment, be example with a computer apparatus (for example, main frame) 100, this computer apparatus 100 comprises a RAID-5 system 200 and several disks 310,330 and 350, above-mentioned disk can be hard disk, or by replacing as any storage devices such as flash memories.When disk 310,330 and 350 carries during to computer apparatus 100, corresponding unit 10 make each disk tool uniqueness (unique) of RAID-5 system 200 identifications recognition data (for example, disk sequence number, disk carry address, product serial number, product type ... or the like).Generation unit 20 these RAID-5 systems of utilization produce a disk enactment document 250 according to this recognition data, this disk enactment document 250 includes the logic sector that disk 310,330 and 350 combines, and this logic sector is distinguished the recognition data of corresponding different disk according to the disk difference of deposit data.
When remove disk 310,330 and 350 from computer apparatus 100, then with the random order carry during to another computer apparatus (not shown), this another computer apparatus also can use RAID-5 system in this reconstruction unit 30 and another computer apparatus according to this disk enactment document that is stored in disk 310,330 and 350, with those disk images of carry to correct disk carry address, with the data in the disk 310,330 and 350 of rebuilding computer apparatus 100 in this another computer apparatus (not shown).
Fig. 3 shows the another configuration diagram of first embodiment of the invention.When removing wherein a disk from computer apparatus 100 (for example, disk 330) again during carry telegram in reply brain device 100, the disk 330 of this disk for script learnt according to the recognition data in the disk enactment document 250 by RAID-5 system 200, so can be as the known techniques, behind the internal storage data of deletion disk 330, utilize the data of disk 310 and 350 to reduce the data of disk 330 again, so can not cause error in data, use to save in the prior art and reduce data in magnetic disk (being the data of disk described in the prior art 2) spent computer resource and the time that removes.
Fig. 4 shows the configuration diagram of second embodiment of the invention, and wherein RAID-5 system 200 more comprises an application program 400, carries out correspondence in order to corresponding unit 10 to be provided.Application program 400 can produce the recognition data of each disk according to disk sequence number, disk carry address, product serial number, product type or other discernible feature of disk 310,330 and 350, and writes in disk 310,330 and 350.For example, utilize a code generator to calculate the identification serial number of each disk, and write in each disk 310,330 and 350.In addition, application program 400 also can be as shown in Figure 4, obtain three identification serial number in the identification serial number of external data base 500 some uniquenesss (unique) that deposit, three identification serial numbers will obtaining then write in each disk 310,330 and 350 respectively.
Therefore, disk 310,330 more than with any and 350 removes and with random order when carry is to computer apparatus 100 again (as Fig. 2 and shown in Figure 3) from computer apparatus 100, RAID-5 system 200 is according to the recognition data or the identification serial number that are written in each disk, with those disk images of carry to correct disk carry address, with the disk 310,330 and the 350 interior data of rebuilding computer apparatus 100.
Note, though only illustrate in the above embodiment of the present invention disk 310,330 and 350 carries to original computer apparatus 100, in right real the work, also can be earlier the disk enactment document 250 of original computer apparatus 100 be copied in another computer apparatus that possesses the RAID-5 system, so at the disk on original computer apparatus 100 with the random order carry during to another computer apparatus, the data that the RAID-5 system on described another computer apparatus also can rebuild disk 310,330 and 350 according to the mode of the foregoing description by the disk enactment document that had before duplicated.
In addition, this disk enactment document is stored in one of this computer apparatus 100 storage medium (for example, storing ROM-BIOS (Basic Input/Output System abbreviates BIOS as)) or is stored in respectively in the disk 310,330 and 350 of each carry.
Moreover, though in the foregoing description, be example only, also can be used in RAID systems such as RAID-1, RAID-2, RAID-3, RAID-4, RAID-6, RAID-10, RAID-50 in right real the work to be extensive use of the RAID-5 system now.
Fig. 5 shows the schematic flow sheet of third embodiment of the invention.
When initial use, with some disks (for example, hard disk, flash memory or any storage device, comprising at least one first disk, a second disk and one the 3rd disk) carry to a computer apparatus is (promptly, first computer apparatus) time, the recognition data (comprising the disk sequence number) of one of this first computer apparatus RAID-5 system (that is, a RAID-5 system) each disk of identification, and produce a disk enactment document (step S21).This first disk, this second disk and the 3rd disk more than with any removes and with random order when carry is to this first computer apparatus again ( disk 310 and 350 as shown in Figure 2) (step S22) from this first computer apparatus, the one RAID-5 system is according to the recognition data in this disk enactment document, with those disk images of carry to correct disk carry address (step S23), with the data (step S24) in this first disk, this second disk and the 3rd disk of rebuilding this first computer apparatus.
Fig. 6 shows the schematic flow sheet of fourth embodiment of the invention.
When this first computer apparatus certainly removes this first disk, this second disk and the 3rd disk, during then with random order carry to the one second computer apparatus (not shown) (step S31), the RAID-5 system of this second computer apparatus (promptly, the 2nd RAID-5 system) according to being stored in this first disk, recognition data in this disk enactment document in this second disk and the 3rd disk, with those disk images of carry to correct disk carry address (step S32), to rebuild this first disk of this first computer apparatus in this second computer apparatus (not shown), data (step S33) in this second disk and the 3rd disk.
Fig. 7 shows the schematic flow sheet of fifth embodiment of the invention.
When initial use, during with at least one first disk, a second disk and one the 3rd disk carry to a computer apparatus, the recognition data (comprising the disk sequence number) of one of one of this computer apparatus RAID-5 system each disk of application program identification, and produce a disk enactment document (step S41).When this second disk is removed and when carry returns this first computer apparatus again (disk 330 as shown in Figure 3) (step S42) from this first computer apparatus, this RAID-5 system is according to the recognition data in this disk enactment document, the disk that identifies this carry is this second disk (step S43), so this RAID-5 system does not carry out data reconstructed operation (step S44).
Fig. 8 shows the schematic flow sheet of sixth embodiment of the invention.
When initial use, during with at least one first disk, a second disk and one the 3rd disk carry to a computer apparatus, one of one of this computer apparatus RAID-5 system application program according to this first, second and disk sequence number, disk carry address, product serial number, product type or other discernible feature of the 3rd disk produce the recognition data of each disk, perhaps in a database, obtain in advance the identification serial number of setting up for each disk, then recognition data or identification serial number are write respectively this first, second and the 3rd disk in (step S51).This first disk, this second disk and the 3rd disk more than with any removes and with random order when carry is to this first computer apparatus again ( disk 310 and 350 as shown in Figure 2) (step S52) from this first computer apparatus, the one RAID-5 system is according to recognition data in those disks or identification serial number, with those disk images of carry to correct disk carry address (step S53), with the data (step S54) in this first disk, this second disk and the 3rd disk of rebuilding this first computer apparatus.
The present invention more provides a kind of recording medium (for example discs, disk sheet and removable hard drive or the like), and it writes down the computer program that a computer-readable is got, so that carry out above-mentioned replacing disk order to rebuild the method for disc array system.At this, be stored in the computer program on the recording medium, basically (for example the setting up organization chart code segment, sign-off forms code segment, setting program code snippet and deployment program code snippet) formed by most code segment, and the function of these code segment corresponds to the step of said method and the functional block diagram of said system.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limiting the present invention, anyly has the knack of this skill person, without departing from the spirit and scope of the invention; when can doing various changes and retouching, so the present invention's protection domain attached claim person of defining after looking is as the criterion.
Claims (10)
1, a kind of disk array reconstruction method is characterized in that, comprises the following steps:
With the recognition data of respectively corresponding some the tool uniquenesss of some disks, and the corresponding single described recognition data of each disk;
Use a RAID system to produce a disk enactment document according to described recognition data, described disk enactment document includes the logic sector that those disk combination form, and described logic sector is distinguished the described recognition data of corresponding different disk according to the disk difference of deposit data;
With described disk carry to a computer apparatus, described computer apparatus possesses described RAID system; And
Described computer apparatus is according to described disk enactment document, and the described disk image of carry to correct disk address, and is rebuild data in the described disk in described computer apparatus.
2, disk array reconstruction method as claimed in claim 1 is characterized in that, described disk enactment document is stored in a storage medium in the described computer apparatus.
3, disk array reconstruction method as claimed in claim 1 is characterized in that, described disk enactment document is stored in described disk respectively.
4, disk array reconstruction method as claimed in claim 1 is characterized in that, described recognition data is produced by one of following method: the internal information by described disk is derived, produce by an application program, and by obtaining in the external data base.
5, a kind of disk array reconstruction system is characterized in that, comprising:
One corresponding unit, described corresponding unit are with the recognition data of respectively corresponding some the tool uniquenesss of some disks, and the corresponding single described recognition data of each disk;
One generation unit, described generation unit uses a RAID system to produce a disk enactment document according to described recognition data, described disk enactment document includes the logic sector that those disk combination form, and described logic sector is distinguished the described recognition data of corresponding different disk according to the disk difference of deposit data; And
One reconstruction unit, when described reconstruction unit possesses the computer apparatus of described RAID system in described disk carry to, described computer apparatus is according to described disk enactment document, the described disk image of carry to correct disk address, and is rebuild data in the described disk in described computer apparatus.
6, disk array reconstruction as claimed in claim 5 system is characterized in that, described disk enactment document is stored in a storage medium in the described computer apparatus.
7, disk array reconstruction as claimed in claim 5 system is characterized in that described disk enactment document is stored in described disk respectively.
8, disk array reconstruction as claimed in claim 5 system is characterized in that described recognition data is one of following disk internal information: disk sequence number, disk carry address, product serial number and product type.
9, disk array reconstruction as claimed in claim 5 system is characterized in that, described recognition data writes described disk respectively after producing via an application program.
10, disk array reconstruction as claimed in claim 5 system is characterized in that described recognition data is obtained in an external data base.
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| CN200810198836A CN101685379A (en) | 2008-09-27 | 2008-09-27 | System and method for reconstructing disk array |
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| CN200810198836A CN101685379A (en) | 2008-09-27 | 2008-09-27 | System and method for reconstructing disk array |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016110004A1 (en) * | 2015-01-05 | 2016-07-14 | 中兴通讯股份有限公司 | Management method and apparatus for disk storage space, and storage device |
| CN109416619A (en) * | 2016-08-22 | 2019-03-01 | 西部数据技术公司 | Automatic RAID configuration |
-
2008
- 2008-09-27 CN CN200810198836A patent/CN101685379A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016110004A1 (en) * | 2015-01-05 | 2016-07-14 | 中兴通讯股份有限公司 | Management method and apparatus for disk storage space, and storage device |
| CN105824572A (en) * | 2015-01-05 | 2016-08-03 | 中兴通讯股份有限公司 | Disk storage space managing method, apparatus and storage device |
| CN105824572B (en) * | 2015-01-05 | 2019-06-04 | 中兴通讯股份有限公司 | A kind of disk storage space management method, device and storage equipment |
| CN109416619A (en) * | 2016-08-22 | 2019-03-01 | 西部数据技术公司 | Automatic RAID configuration |
| CN109416619B (en) * | 2016-08-22 | 2022-04-01 | 西部数据技术公司 | Method, system and computer-usable medium for automatic RAID configuration |
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Application publication date: 20100331 |