CN105607873A - Method for performing LUN expansion by utilizing data migration - Google Patents
Method for performing LUN expansion by utilizing data migration Download PDFInfo
- Publication number
- CN105607873A CN105607873A CN201510973222.6A CN201510973222A CN105607873A CN 105607873 A CN105607873 A CN 105607873A CN 201510973222 A CN201510973222 A CN 201510973222A CN 105607873 A CN105607873 A CN 105607873A
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- lun
- raid group
- data
- data migration
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0604—Improving or facilitating administration, e.g. storage management
- G06F3/0607—Improving or facilitating administration, e.g. storage management by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/0647—Migration mechanisms
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0683—Plurality of storage devices
- G06F3/0689—Disk arrays, e.g. RAID, JBOD
Abstract
The invention discloses a method for performing LUN expansion by utilizing data migration, belongs to LUN expansion methods, and solves the technical problem of how to perform LUN expansion without changing original data. The adopted technical scheme is the method for performing LUN expansion by utilizing data migration; and LUN data in an original RAID group is migrated to a new RAID group consisting of large-capacity disks in a data migration manner to realize LUN expansion. The method comprises the following three processes: (1), creating the new RAID group by utilizing the large-capacity disks; (2), migrating the data into the new RAID group; and (3), deleting data in the original RAID group.
Description
Technical field
The present invention relates to a kind of method of LUN dilatation, specifically a kind of side that utilizes Data Migration to carry out LUN dilatationMethod.
Background technology
Along with the continuous expansion of client's business, data volume becomes the trend of sustainable growth, and storage system is divided at the beginning of disposingLUN(LUN is the logical device that hardware layer separates) capacity starts to become the demand that cannot meet client, now just need to not changeBecome in the situation of client's legacy data, LUN is carried out to dilatation. The method of the LUN dilatation that at present mainstream vendor uses be mainlyOn the basis of existing LUN by RAID(disk array) organize remaining space and continue to be incorporated into the dilatation that realizes LUN in LUN. ButIn practical application, the capacity of RAID group does not generally have too many residue, now also need RAID group to expand, ifNewly-increased disk and former RAID group disk, not in unified disk chassis, cause the disk of same RAID group to show different performances,Thereby affect overall performance, and in the process of RAID group expansion, data can redistribute, and cause corrupted data or loss.
Summary of the invention
Technical assignment of the present invention is to provide a kind of method of utilizing Data Migration to carry out LUN dilatation, how solves and existsIn the situation that legacy data is not changed, LUN is carried out to the problem of dilatation.
Technical assignment of the present invention is realized in the following manner,
A method of utilizing Data Migration to carry out LUN dilatation, the mode by Data Migration is by the LUN data in former RAID groupThe RAID group that moves to new large capacity disc composition, realizes the dilatation of LUN.
Comprise following three processes: (1), utilize large capacity disc to create new RAID group; (2), Data Migration is arrived newlyRAID group in; (3), delete the data in former RAID group.
Specific implementation process is as follows:
1., before Data Migration, utilize untapped large capacity disc to create new RAID group, RAID group rank and former RAID groupIdentical, or create according to the actual requirements other ranks RAID group, after having created without dividing LUN;
2., size the log-on data migration engine of LUN after migration are set, system is the LUN data reading in former RAID group, withShi Zaici is written in new RAID group; In the process of this migration, be not only the data in the former LUN of migration, comprise simultaneouslyThe all properties of LUN, so can ensure that front end main frame carries out continual access when LUN dilatation;
3., after Data Migration completes, all of the LUN data in former RAID group and this LUN all can be deleted, now formerThe utilization rate of RAID group is 0, can re-start the division of LUN to be used as him.
By the description of said method, the corresponding expansion that the capacity of LUN obtains, concerning front end main frame, data do not have simultaneouslyThere is any variation of generation, and because RAID group re-creates, can ensure that they,, in same disk chassis, can not produceThe bottleneck of natural disposition energy. Also can select in addition the conversion of RAID group rank.
The present invention is mainly in the time of the off-capacity of LUN, by what Data Migration was formed to other large capacity discsThe method of RAID group realizes the dilatation of LUN, and the method not only can be expanded the capacity of LUN, can also select to change simultaneouslyRAID organizes rank. To after the data reading in former RAID group, again be written to new RAID group, can there is not any change in data.Can complete data in the inter-step mutual migration of different RAID group simultaneously.
A kind of method of utilizing Data Migration to carry out LUN dilatation of the present invention has the following advantages:
1, in the situation that not changing LUN data and attribute, complete the capacity extension of LUN;
2, select on the basis of traditional LUN dilatation the more method of user;
3, use new disk to create RAID group, can prevent that disk from not impacting performance in same cupboard;
4, in the process of LUN dilatation, can realize the conversion of RAID group rank.
Detailed description of the invention
Following at length to a kind of method work that utilizes Data Migration to carry out LUN dilatation of the present invention with reference to specific embodimentExplanation.
Embodiment 1:
A kind of method of utilizing Data Migration to carry out LUN dilatation of the present invention, the mode by Data Migration is by former RAID groupLUN Data Migration to the RAID group of new large capacity disc composition, realize the dilatation of LUN.
Comprise following three processes: (1), utilize large capacity disc to create new RAID group; (2), Data Migration is arrived newlyRAID group in; (3), delete the data in former RAID group.
Specific implementation process is as follows:
1., before Data Migration, utilize untapped large capacity disc to create new RAID group, RAID group rank and former RAID groupIdentical, or create according to the actual requirements other ranks RAID group, after having created without dividing LUN;
2., size the log-on data migration engine of LUN after migration are set, system is the LUN data reading in former RAID group, withShi Zaici is written in new RAID group; In the process of this migration, be not only the data in the former LUN of migration, comprise simultaneouslyThe all properties of LUN, so can ensure that front end main frame carries out continual access when LUN dilatation;
3., after Data Migration completes, all of the LUN data in former RAID group and this LUN all can be deleted, now formerThe utilization rate of RAID group is 0, can re-start the division of LUN to be used as him.
Embodiment 2:
A kind of method of utilizing Data Migration to carry out LUN dilatation of the present invention, comprises the steps:
1., before Data Migration, former RAID group contains four capacity and is respectively the disk of 73GB, wherein stores LUN0'sThe data of the data of 146GB and the 73GB of LUN1;
2., the disk of untapped four 146GB is created as to new RAID group, but do not divide any LUN;
3., size the log-on data migration engine of LUN after migration are set, system is data reading in former LUN, again writes simultaneouslyEnter in new RAID group; In the process of this migration, be not only the data in the former LUN of migration, comprise the institute of LUN simultaneouslyThere is attribute, so can ensure that front end main frame carries out continual access when LUN dilatation;
4., the data of 146GB of LUN0 and the data of the 73GB of LUN1 in new RAID group, have been written into;
5., after Data Migration completes, LUN data and all of this LUN of former RAID group all can be deleted, now former RAIDThe utilization rate of group is 0, can re-start the division of LUN to be used as him.
By detailed description of the invention above, described those skilled in the art can be easy to realize the present invention. But shouldWork as understanding, the present invention is not limited to above-mentioned detailed description of the invention. On the basis of disclosed embodiment, described technical fieldTechnical staff can be combined different technical characterictics, thereby realize different technical schemes.
Except the technical characterictic described in description, be the known technology of those skilled in the art.
Claims (3)
1. a method of utilizing Data Migration to carry out LUN dilatation, the mode by Data Migration of it is characterized in that is by former RAIDLUN Data Migration in group, to the RAID group of new large capacity disc composition, is realized the dilatation of LUN.
2. a kind of method of utilizing Data Migration to carry out LUN dilatation according to claim 1, is characterized in that comprising followingThree processes: (1), utilize large capacity disc to create new RAID group; (2), by Data Migration in new RAID group; (3), deleteExcept the data in former RAID group.
3. a kind of method of utilizing Data Migration to carry out LUN dilatation according to claim 2, is characterized in that specific implementationProcess is as follows:
1., before Data Migration, utilize untapped large capacity disc to create new RAID group, RAID group rank and former RAID groupIdentical, or according to creating other ranks RAID group, after having created without division LUN;
2., size the log-on data migration engine of LUN after migration are set, system is data reading in former LUN, again writes simultaneouslyEnter in new RAID group;
3., after Data Migration completes, the data in former LUN are deleted, now the utilization rate of former RAID group is 0.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510973222.6A CN105607873A (en) | 2015-12-23 | 2015-12-23 | Method for performing LUN expansion by utilizing data migration |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510973222.6A CN105607873A (en) | 2015-12-23 | 2015-12-23 | Method for performing LUN expansion by utilizing data migration |
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| CN105607873A true CN105607873A (en) | 2016-05-25 |
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| CN201510973222.6A Pending CN105607873A (en) | 2015-12-23 | 2015-12-23 | Method for performing LUN expansion by utilizing data migration |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102823A (en) * | 2017-05-23 | 2017-08-29 | 郑州云海信息技术有限公司 | A kind of LUN integration methods between different RAID groups |
| WO2019033949A1 (en) * | 2017-08-18 | 2019-02-21 | 阿里巴巴集团控股有限公司 | Data migration method, apparatus and device |
| CN109614053A (en) * | 2018-12-17 | 2019-04-12 | 郑州云海信息技术有限公司 | A kind of method and apparatus extending KVM magnetic disk of virtual machine subregion |
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| CN102103629A (en) * | 2010-12-14 | 2011-06-22 | 西北工业大学 | Online data migration method |
| US8521691B1 (en) * | 2011-06-24 | 2013-08-27 | Emc Corporation | Seamless migration between replication technologies |
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Patent Citations (3)
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| CN101799743A (en) * | 2009-02-05 | 2010-08-11 | 株式会社日立制作所 | Method and apparatus for logical volume management |
| CN102103629A (en) * | 2010-12-14 | 2011-06-22 | 西北工业大学 | Online data migration method |
| US8521691B1 (en) * | 2011-06-24 | 2013-08-27 | Emc Corporation | Seamless migration between replication technologies |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107102823A (en) * | 2017-05-23 | 2017-08-29 | 郑州云海信息技术有限公司 | A kind of LUN integration methods between different RAID groups |
| WO2019033949A1 (en) * | 2017-08-18 | 2019-02-21 | 阿里巴巴集团控股有限公司 | Data migration method, apparatus and device |
| CN109614053A (en) * | 2018-12-17 | 2019-04-12 | 郑州云海信息技术有限公司 | A kind of method and apparatus extending KVM magnetic disk of virtual machine subregion |
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