CN105824572A - Disk storage space managing method, apparatus and storage device - Google Patents
Disk storage space managing method, apparatus and storage device Download PDFInfo
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Abstract
The invention discloses a disk storage space managing method, apparatus and storage device. The method comprises the following steps of identifying an operation that a disk is inserted into the storage device, identifying whether a newly-inserted disk carries data according to metadata and file systems carried by the disk, and preserving data of the newly-inserted disk according to a user instruction and mounting the file systems of the newly-inserted disk into a shared catalogue in the storage device or mounting file systems of a disk array RAID of the newly-inserted disk into a shared catalogue in the storage device when the newly-inserted data carries data. The apparatus comprises a data identifying module, a data reserving module and a catalogue mounting module. By the use of the method, the device and the storage device, changes of the disk of the storage device can be sensed, so the user can preserve original data of the disk.
Description
Technical field
The present invention relates to memory technology, particularly relate to a kind of disk storage space management method, device and storage device.
Background technology
Nowadays, mankind's stepped into information epoch already.Various electronic equipments, such as smart mobile phone, PC, digital camera etc., the life with people is closely related.And along with the appearance of Blu-ray video, lossless music, high pixel photo etc., family data amount occurs in that and increases on a large scale.Therefore, the demand of family's special purpose memory devices is day by day strengthened.
Software PLC (RedundantArraysofIndependentDisks, disk array), refers to the disk array of Software Create.By multiple block devices (such as disk, disk partition, logical volume etc.) as member, generate a kind of new block device with data protection function through technology such as stripings.Refer to the block device utilizing mdadm order band "-C " or "-create " parameter to generate in linux system, hereinafter referred to as RAID specifically.
Domestic consumer occasionally wants to both transfer to storage system to be managed collectively the old hard disk in family, in order to utilizes the various upper level applications of storage system to conduct interviews disk, retains again the data in old hard disk.This old disk may be for following situation: be probably the disk pulled from the operating systems such as Windows, Linux, MAC；It is probably the disk pulled from our another set of family storage device；It is probably the mixing of both above situation any amount (in the range of physical slot position is supported) disk.
Because RAID is based on multiple disk partition, and a disk can be divided into multiple subregion, so, once disk changes, and as damaged, plugging and unplugging, will have influence on multiple RAID simultaneously, if the disk member of RAID is the most, that affected RAID is the most more.
After one RAID device builds, MD (MultipleDevices, multiple devices) drives and manages RAID member by primary and secondary device number.One disk, after extracting, turn back to again, although at this moment or same disk, Disk Serial Number is unchanged, but the original subregion in disk may be deleted, revises or repartition, and the system of no matter family's special purpose memory devices is when identifying, whether the secondary device number of disk partition is with the most consistent, and above-mentioned situation is all that MD drives and cannot process.For brand-new disk, data need not the disk retained in other words, can directly dispose the data in dish, be managed by our mode；But for the old disk of user, disk (or its subregion) once becomes the member of RAID, then, the data in disk can all be lost.How to retain the data in diversified old disk, and disk is managed collectively, it is provided that access to user, be also the problem needing to solve.Thus, it is necessary to these changes of active perception when hyperdisk memory space, identify each member of RAID accurately, and RAID is carried out suitable process.
Summary of the invention
In view of this, the present invention provides a kind of disk storage space management method, device and storage device, it is possible to the change to storage device disk carries out perception, in order to user retains the data in old disk.
A kind of disk storage space management method provided based on the above-mentioned purpose present invention, comprises the steps:
Identify that disk inserts the operation of storage device；
The metadata self-contained according to disk and file system, whether identify newly inserted disk carries data；
When newly inserted disk carries data, according to the instruction of user, retain the data in newly inserted disk, and the carry on a storage device of the file system in newly inserted disk is become share directory.
Optionally, according to the self-contained metadata of disk, identify whether newly inserted disk carries the step of data and specifically include:
Judging whether disk carries metadata, if disk carries metadata, then identify disk carries data；If disk does not carry metadata, but has file system, then identify that disk carries data.
Described the step of share directory is become to specifically include the carry on a storage device of the file system in newly inserted disk:
If newly inserted disk carries metadata, by the file system mounted one-tenth share directory in the disk array RAID of newly inserted disk；
If newly inserted disk does not carries metadata but carries file system, by the file system mounted one-tenth share directory of newly inserted disk.
Optionally, the step retaining the data in newly inserted disk specifically includes:
All disks of scanning storage device, obtain the partition list under current state in system；
If newly inserted disk carries metadata, then according to the metadata entrained by newly inserted disk, it is thus achieved that the subregion general unique identifier UUID of the disk array RAID member in described newly inserted disk；According to described partition list and described subregion general unique identifier UUID, find the subregion under system current state corresponding to described subregion general unique identifier UUID；In described storage device, re-assembly out the disk array RAID in newly inserted disk；RAID device carry according to re-assemblying out goes out share directory；
If newly inserted disk does not carry metadata, then the subregion carry in partition list is become share directory.
Optionally, go out the step of share directory according to the RAID device carry re-assemblied out to specifically include:
When the metadata comprised in the metadata entrained by disk general unique identifier UUID unique identifier UUID general with the system of storage device is consistent, the disk array RAID carry re-assemblied out is become memory space, from memory space, then recovers share directory；
When the system general unique identifier UUID of the metadata comprised in the metadata entrained by disk general unique identifier UUID Yu storage device is inconsistent, the disk array RAID carry re-assemblied out is become share directory.
Optionally, when reaching when creating memory space trigger condition or receive the memory space establishment instruction of user's transmission of setting, execution following steps:
Choose the blank disc of storage device, and the blank disc chosen is carried out subregion, obtain newly created disk partition；
In units of newly created disk partition, create floppy disc array RAID；
Described floppy disc array RAID creates file system；
Described floppy disc array RAID information is saved in the metadata of blank disc together with the metadata mark of blank disc, to update the metadata of blank disc；
The meta-data preservation of the blank disc after updating is in the CONFIG.SYS of storage device.
Optionally, in units of newly created disk partition, create floppy disc array RAID step specifically include:
The blank disc chosen builds the first subregion, then builds disk array RAID with the first subregion for member, as reliable memory space；And on the blank disc chosen, build the second subregion, then build disk array RAID with the second subregion for member, as unreliable memory space；
Described reliable memory space uses the mode with data redundancy ability to store data, and the disk array RAID of use includes: RAID1 or RAID5 or RAID6 or RAID10；Described unreliable memory space does not have data redundancy ability, and the disk array RAID of use includes: RAID0 or linear formula storage LINEAR.
Optionally, described method also includes:
Receive the instruction deleting memory space；
According to the instruction of described deletion memory space, unload memory space；
Stop the disk array RAID that the memory space of needs deletion is corresponding；
The disk array RAID superblock information of each disk in removing disk array RAID and metadata；
The metadata that described memory space is corresponding is deleted in CONFIG.SYS；
If storage device does not exist other disk array, deletion system mark in CONFIG.SYS.
Optionally, described method also includes:
Receive the instruction deleting disk；
Unload all of file system on disk to be deleted；
If the metadata mark of disk to be deleted is different from the metadata of storage device mark, then stops the disk array RAID on disk to be deleted, remove the disk array RAID superblock information on disk to be deleted and its metadata information carried.
Optionally, the disk array RAID member of newly inserted disk itself after carry becomes share directory on a storage device, is also included:
Use described share directory, have in storage device and transmit data by disk interface between disk and newly inserted disk.
Meanwhile, the present invention also provides for a kind of disk storage space managing device, including:
Update identification module: for identifying that disk inserts the operation of storage device；
Data identification module: for the metadata self-contained according to disk and file system, whether identify newly inserted disk carries data；
Data reservation module: for when newly inserted disk carries data, according to the instruction of user, retain the data in newly inserted disk；
Catalogue carry module: for the carry on a storage device of the file system in newly inserted disk is become share directory.
Optionally, described data identification module specifically includes:
First recognition unit: for when determining that disk carries metadata, then identify disk carries data；
Second recognition unit: determine that disk does not carry metadata for working as, but have file system, then identify that disk carries data.
Optionally, described catalogue carry module specifically includes:
First share directory carry unit: in the case of newly inserted disk carries metadata, by the file system mounted one-tenth share directory in the disk array RAID of newly inserted disk；
Second share directory carry unit: in the case of newly inserted disk does not carries metadata but carries file system, by the file system mounted one-tenth share directory of newly inserted disk.
Optionally, described data reservation module specifically includes:
Partition list obtains module: for scanning all disks of storage device, obtain the partition list under current state in system；
General unique identifier UUID acquiring unit: for when newly inserted disk carries metadata, then according to the metadata entrained by newly inserted disk, it is thus achieved that the subregion general unique identifier UUID of the disk array RAID member in described newly inserted disk；And trigger subregion lookup unit；
Subregion searches unit: for according to described partition list and described subregion general unique identifier UUID, find the subregion under system current state corresponding to described subregion general unique identifier UUID；And trigger RAID module units；
RAID module units: in described storage device, re-assembly out the disk array RAID in newly inserted disk；And trigger share directory the first carry unit；
Share directory the first carry unit: for going out share directory according to the RAID device carry re-assemblied out；
Share directory the second carry unit: if not carrying metadata for newly inserted disk, then the subregion carry in partition list is become share directory.
Optionally, described share directory the first carry unit specifically includes:
Memory space carry subelement: for when the metadata comprised in the metadata entrained by disk general unique identifier UUID unique identifier UUID general with the system of storage device is consistent, the disk array RAID carry re-assemblied out is become memory space, then triggers share directory revertant unit；
Share directory recovers subelement: for recovering share directory from memory space；
Share directory carry subelement: for when the system general unique identifier UUID of the metadata comprised in the metadata entrained by disk general unique identifier UUID Yu storage device is inconsistent, the disk array RAID carry re-assemblied out is become share directory.
Optionally, described device also includes:
Blank disc division module: for when reaching when creating memory space trigger condition or receive the memory space establishment instruction of user's transmission of setting, choose the blank disc of storage device, and the blank disc chosen is carried out subregion, obtain newly created disk partition；
Floppy disc array RAID creation module: in units of newly created disk partition, create floppy disc array RAID；
File system creation module: for creating file system on described floppy disc array RAID；
Metadata updates module: for described floppy disc array RAID information is saved in the metadata of blank disc together with the metadata mark of blank disc, to update the metadata of blank disc；
Meta-data preservation module: the meta-data preservation of the blank disc after updating is in the CONFIG.SYS of storage device.
Optionally, described floppy disc array RAID creation module specifically includes:
Reliable subregion construction unit: for building the first subregion on the blank disc chosen；
Reliable memory space construction unit: for building disk array RAID with the first subregion for member, as reliable memory space；
Unreliable subregion construction unit: for building the second subregion on the blank disc chosen；
Unreliable memory space construction unit: build disk array RAID for member with the second subregion, as unreliable memory space；
Described reliable memory space uses the mode with data redundancy ability to store data, and the disk array RAID of use includes: RAID1 or RAID5 or RAID6 or RAID10；Described unreliable memory space does not have data redundancy ability, and the disk array RAID of use includes: RAID0 or linear formula storage LINEAR.
Optionally, described device also includes:
Delete memory space command reception module: for receiving the instruction deleting memory space；
Memory space Unload module: for the instruction according to described deletion memory space, unloads memory space；
Disk array RAID stopping modular: for stopping the disk array RAID that the memory space of needs deletion is corresponding；
First disk array RAID information removing module: the disk array RAID superblock information of each disk in removing disk array RAID and metadata；
Metadata removing module: for deleting the metadata that described memory space is corresponding in CONFIG.SYS；
System banner removing module: if there is not other disk array in storage device, deletion system mark in CONFIG.SYS.
Optionally, described device also includes:
Delete disk command reception module: for receiving the instruction deleting disk；
File system Unload module: for unloading all of file system on disk to be deleted；
Disk array RAID stopping modular: for when the metadata of disk to be deleted identifies different from the metadata of storage device mark, stopping the disk array RAID on disk to be deleted；
Second disk array RAID information removes module: for removing the disk array RAID superblock information on disk to be deleted and its metadata information carried.
Optionally, described device also includes: use described share directory, has in storage device and transmits data by disk interface between disk and newly inserted disk.
Further, the present invention also provides for a kind of storage device, including the disk for storing data, also includes the disk storage space managing device that any one embodiment of the present invention is provided.
As can be seen from above, disk storage space management method, device and the storage device that the present invention provides, when the newly inserted disk of storage device, if newly inserted disk contains data, the file system in disk can be presented to user with the form of share directory and use；Software PLC, the memory space of carry Cheng Xin can also be built on disk, then create share directory and use to user.User so can not only be allowed to make full use of disk old in family, and when user needs to move in our equipment enterprising row data, move out, can be very convenient.
Accompanying drawing explanation
Fig. 1 is the method flow schematic diagram of the embodiment of the present invention；
Fig. 2 is the disk type transfer schematic diagram of the embodiment of the present invention；
Fig. 3 A, 3B are that the disk storage space of the embodiment of the present invention divides schematic diagram；
Fig. 4 is the apparatus structure schematic diagram of the embodiment of the present invention.
Detailed description of the invention
In order to provide effective implementation, the invention provides following embodiment, below in conjunction with Figure of description, the embodiment of the present invention is illustrated.
Present invention firstly provides a kind of disk storage space management method, the step including as shown in Figure 1:
Step 101: identify that disk inserts the operation of storage device；
Step 102: the metadata self-contained according to disk and file system, whether identify newly inserted disk carries data；
Step 103: when newly inserted disk carries data, according to the instruction of user, retains the data in newly inserted disk, and the carry on a storage device of the file system in newly inserted disk is become share directory.
As can be seen from above, the disk storage space management method that the present invention provides, to the disk containing data, file system in disk can be presented to user with the form of share directory use, thus user is when inserting disk in family's special purpose memory devices, can according to oneself need the data in disk are retained, it is to avoid disk cause when change inserts position internal zone dividing be deleted and lose.
In a particular embodiment of the present invention, giving metadata for the disk being connected in family's special purpose memory devices, this metadata includes for identifying disk so that can pass through metadata identification when different disks is plugged in storage device, make a distinction.
In some embodiments of the invention, according to the self-contained metadata of disk, identify whether newly inserted disk carries the step of data and specifically include:
Judging whether disk carries metadata, if disk carries metadata, then identify disk carries data；If disk does not carry metadata, but has file system, then identify that disk carries data.
In the specific embodiment of the invention, system banner is stored in the configuration file of storage device, after disk is set up subregion in this storage device, is created memory space, the system banner of this storage device can be written in the metadata of disk, metadata as disk identifies, the system banner of different storage device is the most different, thus, metadata mark according to disk, just it is appreciated that whether Data Source that disk currently carries is the newly inserted storage device of disk, thus learns that whether the type of disk is the own disk of storage device.
In the specific embodiment of the invention, magnetic disk metadata includes metadata UUID (UniversallyUniqueIdentifier, general unique identifier), RAID information；Described RAID information farther includes RAID title, RAID, file system designator, RAID number of members, RAID member's size and the UUID of each subregion.Wherein, RAID entitled disk array title, RAID can be LINEAR, RAID0, RAID1, RAID5, RAID6, RAID10 etc..RAID number of members, RAID member's size are for representing the number of partitions of disk array, each partition size.Such as, be respectively one RAID of three partition creatings of 100,200,300 by size, then RAID number of members is 3, and RAID member's size is 100.On same disk, each subregion all has different general unique identifier UUID.After a disk carries out subregion on a storage device and builds RAID, storage device can give this magnetic disk metadata, and metadata UUID that disk is endowed is consistent with memory apparatus system UUID, after this disk is extracted after a while from storage device, if disk is not formatted as blank disc, the metadata of disk can be maintained on disk.
In the specific embodiment of the invention, the disk being plugged in storage device is divided into data disks, compatible disc, user disk, blank disc.Data disks: comprise metadata information, and metadata mark UUID matches with current system UUID；Compatible disc: comprise metadata information, but metadata mark UUID does not mates with current system UUID；User disk: do not comprise metadata information, but comprise file system, data need to retain；Blank disc: do not comprise metadata information, the most do not comprise file system.When disk is plugged in storage device, storage device is by identifying the metadata entrained by disk, judge that metadata UUID of disk is the most consistent with system UUID of storage device, if metadata UUID of disk is consistent with system UUID of storage device, then this disk is data disks；If disk has metadata but metadata UUID is inconsistent with system UUID of storage device, so this disk is compatible disc, this disk i.e. is probably and pulls from other storage device, and the upper storage device of this disk institute grafting has carried out subregion to this disk；If disk does not has metadata but has file system, so this disk is user disk, this disk i.e. is probably and pulls from other storage device, and other storage device is probably such as Windows system, linux system, MacOS (Apple Macintosh operating system) system etc.；And the storage device of this disk institute's last time grafting does not give metadata to this disk when this disk carries out subregion or write data, the disk pulled from the storage device of the systems such as Windows system, linux system, MacOS system can not possess metadata proposed by the invention；If disk does not have metadata or file system, then this disk is blank disc, does not carry data, it is being plugged into the problem that there is not loss of data in new storage device.In embodiments of the present invention, type belonging to disk is as the management operation of memory space and changes.The state transition diagram of disk type such as Fig. 2 shows, in Fig. 2, " be placed in other storage device " referring to the method using the present invention to provide is the storage device that disk gives metadata, and not has the storage device of the systems such as Windows, Linux, MacOS of the prior art.Such as, the old disk of user, retain through data, be then changed into user disk；When user is not desired to the data retaining in user disk again, can delete user disk, at this moment this disk is then changed into blank disc, and after creating memory space on blank disc, this disk is changed into again data disks.
In a particular embodiment of the present invention, described metadata also includes the information such as version number, check value, metadata signature, for verifying the effectiveness of metadata when identifying and resolving metadata.
Disk carries the situation of data and includes that two kinds: one is that disk carries metadata；At this moment the data carried in disk are that our own equipment creates, and comprise RAID, comprise file system in RAID again in disk；Two are, disk directly carries file system；At this moment the data carried in disk are that other system (such as Windows, Linux, MacOS etc.) creates.Described the step of share directory is become to specifically include the carry on a storage device of the file system in newly inserted disk:
If newly inserted disk carries metadata, by the file system mounted one-tenth share directory in the disk array RAID of newly inserted disk；
If newly inserted disk does not carries metadata but carries file system, by the file system mounted one-tenth share directory of newly inserted disk.
In some embodiments of the invention, the step retaining the data in newly inserted disk specifically includes:
All disks of scanning storage device, obtain the partition list under current state in system；
If newly inserted disk carries metadata, then according to the metadata entrained by newly inserted disk, it is thus achieved that the subregion general unique identifier UUID of the disk array RAID member in described newly inserted disk；According to described partition list and described subregion general unique identifier UUID, find the subregion under system current state corresponding to described subregion general unique identifier UUID；In described storage device, re-assembly out the disk array RAID in newly inserted disk；RAID device carry according to re-assemblying out goes out share directory；
If newly inserted disk does not carry metadata, then the subregion carry in partition list is become share directory.
The step going out share directory according to the RAID device carry re-assemblied out specifically includes:
When the metadata comprised in the metadata entrained by disk general unique identifier UUID unique identifier UUID general with the system of storage device is consistent, the disk array RAID carry re-assemblied out is become memory space, from memory space, then recovers share directory；
When the system general unique identifier UUID of the metadata comprised in the metadata entrained by disk general unique identifier UUID Yu storage device is inconsistent, the disk array RAID carry re-assemblied out is become share directory.
In some embodiments of the invention, when reaching when creating memory space trigger condition or receive the memory space establishment instruction of user's transmission of setting, execution following steps:
Choose the blank disc of storage device, and the blank disc chosen is carried out subregion, obtain newly created disk partition；
In units of newly created disk partition, create floppy disc array RAID；
Described floppy disc array RAID creates file system；
Described floppy disc array RAID information is saved in the metadata of blank disc together with the metadata mark of blank disc, to update the metadata of blank disc；
The meta-data preservation of the blank disc after updating is in the CONFIG.SYS of storage device.
In units of newly created disk partition, create floppy disc array RAID step specifically include:
The blank disc chosen builds the first subregion, then builds disk array RAID with the first subregion for member, as reliable memory space；And on the blank disc chosen, build the second subregion, then build disk array RAID with the second subregion for member, as unreliable memory space；
Described reliable memory space uses the mode with data redundancy ability to store data, and the disk array RAID of use includes: RAID1 or RAID5 or RAID6 or RAID10；Described unreliable memory space does not have data redundancy ability, and the disk array RAID of use includes: RAID0 or linear formula storage LINEAR.
In a particular embodiment of the present invention, reliable RAID memory space is built-up by the subregion of different disk, and optional RAID has RAID1, RAID5, RAID6, RAID10；Insecure RAID memory space is built by a subregion single on disk, and optional RAID has RAID0, LINEAR (linear formula storage).The partition size in reliable memory space can determine the most flexibly: such as the 30% or 20% of optional disk total capacity；May be alternatively provided as a fixing size, such as 300G, 500G etc..Here " reliably " and " unreliable " is to weigh with the situation of disk failures, loss.Data in reliable memory space, in the case of losing, additionally it is possible to find identical Backup Data in other disk in its this disk stored.Such as, a reliable memory space is built in two disks A, B, this reliable memory space is made up of space or the different size of space of formed objects in two disks, when data are stored in the reliable memory space of disk A or disk B, the reliable memory space of disk B or disk A can be stored in simultaneously, when disk A or disk B damages, the identical copy data in the reliable memory space of disk B or disk A remain able to call, thus ensure the reliability that data store.
In a kind of specific embodiment of the present invention, metadata being placed on the position that disk starts most, the most each disk is divided into Liang Ge district, first subregion to occupy the certain percentage of total capacity, and such as 30%；Second subregion is the 70% of total capacity.The compound mode of reliable memory spatial choice RAID1, unreliable memory space selects the compound mode of RAID0.Disk is combined two-by-two, can be divided into two kinds of situations according to the quantity of the disk in system:
Fig. 3 A is the situation of total even number disk in system.At this moment a reliable memory space, two unreliable memory spaces can be constructed between two disks.The capacity in reliable memory space is the 30% of disk size, capacity is disk size the 70% of each unreliable memory space.At this moment reliable memory space is by two member compositions, has data redundancy ability truly.In the case of one disk failures, it is ensured that the data in reliable memory space are not lost.
Fig. 3 B is the situation having odd number disk in system.At this moment first subregion still builds RAID by the mode of RAID1.At this moment reliable memory space only one of which member, it is impossible to that accomplishes truly is reliable.But, when there being new disk to insert, just increase new member by the strategy of even number disk to reliable memory space, it is achieved real is reliable.That is, when there being new disk to insert storage device, memory space by the 30% of new disk is together with the first subregion of the disk shown in Fig. 3 B, as reliable memory space, in newly inserted disk, the memory space of 70% is together with the second subregion of the disk shown in Fig. 3 B, respectively as unreliable memory space.
Assuming that a memory element is made up of two disks, the capacity of single disk is U, and reliable memory space uses the mode of RAID1, and unreliable memory space uses the mode of RAID0.So: in the above-described embodiments, being that a storage cell builds RAID with a subregion, then can obtain a reliable memory space, two unreliable memory spaces simultaneously, total free space is: total size: 30%*U+70%*2*U=1.7U.And if be that a storage cell builds RAID with disk, then or obtain a reliable memory space；Obtain one or two unreliable memory spaces.If obtaining a reliable memory space, then the total size of memory space is (U+U) * 50%=U；If obtaining one or two unreliable memory space, then the total size of memory space is: U+U=2U.
If it is thinner to the subregion of disk, then reliable memory space number and the unreliable memory space number that can obtain all can be more simultaneously, and the size of total free space is the most more flexible.
In some embodiments of the invention, described method also includes:
Receive the instruction deleting memory space；
According to the instruction of described deletion memory space, unload memory space；
Stop the floppy disc array RAID that the memory space of needs deletion is corresponding；
The disk array RAID superblock information of each disk in removing floppy disc array RAID and metadata；
The metadata that described memory space is corresponding is deleted in CONFIG.SYS；
If storage device does not exist other disk array, deletion system mark in CONFIG.SYS.
In some embodiments of the invention, described method also includes:
Receive the instruction deleting disk；
Unload all of file system on disk to be deleted；
If the metadata mark of disk to be deleted is different from the metadata of storage device mark, then stops the floppy disc array RAID on disk to be deleted, remove the disk array RAID superblock information on disk to be deleted and its metadata information carried.
In some embodiments of the invention, the disk array RAID member of newly inserted disk itself after carry becomes share directory on a storage device, is also included:
Use described share directory, have in storage device and transmit data by disk interface between disk and newly inserted disk.
Under actual application scenarios, user newly buys a family storage device, but at this moment there is larger amount of data with existing, such as photo, video, document etc. in user family.For traditional domestic NAS (NetworkAttachedStorage, network attached storage) equipment, at this moment can only be by the way of network or the mode of USB external tapping is moved into data with existing new storage center.If data volume has hundreds of G even to go up T, then data transmission will take a substantial amount of time.Utilize the present invention can support the characteristic of user data dish, be greatly improved the efficiency of migration of subscriber data.
In the specific embodiment of the invention, first, the existing disk of storage device creates memory space, then on memory space, is created that share directory；Then user data dish is inserted storage device, select data to retain, newly inserted user data dish carry is become share directory.Share directory is exactly the elementary cell that user can directly operate, so, at this moment having only to do data between both share directories copy just, and this copy is exactly that on same system, data between different disk are to copying, data transmission period shortens in a large number.
Storage device for other, the data in old disk are wanted to import in storage system, it is accomplished by first disk being linked into another computer, then the data in this computer reading disk are allowed, by network, data are transferred to storage system again, finally by storage system, data are saved in memory space.This mode data need the reading through computer, network transmission, the process of storage system write, and flow process is tediously long, and data transmission efficiency is low.
And the Data Migration mode that the above embodiment of the present invention uses, because in same system, it is that shared system bus is (such as PCI:PeripheralComponentInterconnect between user data dish and memory space data disks, Peripheral Component Interconnect standard), so disk interface almost can be reached, such as SATA (SerialAdvancedTechnologyAttachment, Serial Advanced Technology Attachment), the maximum rate of IDE (IntegratedDriveElectronics, integrated driving electronic equipment).Be far from USB interface in its transmission speed, network interface caned than.For supporting the SATA disk of hot plug, moreover it is possible to accomplish as USB device plug and play easily, the use being greatly enhanced user is experienced.
Further, the present invention provides a kind of disk storage space managing device, structure as shown in Figure 4, including:
Update identification module: for identifying that disk inserts the operation of storage device；
Data identification module: for the metadata self-contained according to disk and file system, whether identify newly inserted disk carries data；
Data reservation module: for when newly inserted disk carries data, according to the instruction of user, retain the data in newly inserted disk；
Catalogue carry module: for the carry on a storage device of the file system in newly inserted disk is become share directory.
In some embodiments of the invention, described data identification module specifically includes:
First recognition unit: for when determining that disk carries metadata, then identify disk carries data；
Second recognition unit: determine that disk does not carry metadata for working as, but have file system, then identify that disk carries data.
In some embodiments of the invention, described catalogue carry module specifically includes:
First share directory carry unit: in the case of newly inserted disk carries metadata, by the file system mounted one-tenth share directory in the disk array RAID of newly inserted disk；
Second share directory carry unit: in the case of newly inserted disk does not carries metadata but carries file system, by the file system mounted one-tenth share directory of newly inserted disk.
In some embodiments of the invention, described data reservation module specifically includes:
Partition list obtains module: for scanning all disks of storage device, obtain the partition list under current state in system；
General unique identifier UUID acquiring unit: for when newly inserted disk carries metadata, then according to the metadata entrained by newly inserted disk, it is thus achieved that the subregion general unique identifier UUID of the disk array RAID member in described newly inserted disk；And trigger subregion lookup unit；
Subregion searches unit: for according to described partition list and described subregion general unique identifier UUID, find the subregion under system current state corresponding to described subregion general unique identifier UUID；And trigger RAID module units；
RAID module units: in described storage device, re-assembly out the disk array RAID in newly inserted disk；And trigger share directory the first carry unit；
Share directory the first carry unit: for going out share directory according to the RAID device carry re-assemblied out；
Share directory the second carry unit: if not carrying metadata for newly inserted disk, then the subregion carry in partition list is become share directory.
In some embodiments of the invention, described share directory the first carry unit specifically includes:
Memory space carry subelement: for when the metadata comprised in the metadata entrained by disk general unique identifier UUID unique identifier UUID general with the system of storage device is consistent, the disk array RAID carry re-assemblied out is become memory space, then triggers share directory revertant unit；
Share directory recovers subelement: for recovering share directory from memory space；
Share directory carry subelement: for when the system general unique identifier UUID of the metadata comprised in the metadata entrained by disk general unique identifier UUID Yu storage device is inconsistent, the disk array RAID carry re-assemblied out is become share directory.
In some embodiments of the invention, described device also includes:
Blank disc division module: for when reaching when creating memory space trigger condition or receive the memory space establishment instruction of user's transmission of setting, choose the blank disc of storage device, and the blank disc chosen is carried out subregion, obtain newly created disk partition；
Floppy disc array RAID creation module: in units of newly created disk partition, create floppy disc array RAID；
File system creation module: for creating file system on described floppy disc array RAID；
Metadata updates module: for described floppy disc array RAID information is saved in the metadata of blank disc together with the metadata mark of blank disc, to update the metadata of blank disc；
Meta-data preservation module: the meta-data preservation of the blank disc after updating is in the CONFIG.SYS of storage device.
In some embodiments of the invention, described floppy disc array RAID creation module specifically includes:
Reliable subregion construction unit: for building the first subregion on the blank disc chosen；
Reliable memory space construction unit: for building disk array RAID with the first subregion for member, as reliable memory space；
Unreliable subregion construction unit: for building the second subregion on the blank disc chosen；
Unreliable memory space construction unit: build disk array RAID for member with the second subregion, as unreliable memory space；
Described reliable memory space uses the mode with data redundancy ability to store data, and the disk array RAID of use includes: RAID1 or RAID5 or RAID6 or RAID10；Described unreliable memory space does not have data redundancy ability, and the disk array RAID of use includes: RAID0 or linear formula storage LINEAR.
In some embodiments of the invention, described device also includes:
Delete memory space command reception module: for receiving the instruction deleting memory space；
Memory space Unload module: for the instruction according to described deletion memory space, unloads memory space；
Disk array RAID stopping modular: for stopping the disk array RAID that the memory space of needs deletion is corresponding；
First disk array RAID information removing module: the disk array RAID superblock information of each disk in removing disk array RAID and metadata；
Metadata removing module: for deleting the metadata that described memory space is corresponding in CONFIG.SYS；
System banner removing module: if there is not other disk array in storage device, deletion system mark in CONFIG.SYS.
In some embodiments of the invention, described device also includes:
Delete disk command reception module: for receiving the instruction deleting disk；
File system Unload module: for unloading all of file system on disk to be deleted；
Disk array RAID stopping modular: for when the metadata of disk to be deleted identifies different from the metadata of storage device mark, stopping the disk array RAID on disk to be deleted；
Second disk array RAID information removes module: for removing the disk array RAID superblock information on disk to be deleted and its metadata information carried.
In some embodiments of the invention, described device also includes: use described share directory, has in storage device and transmits data by disk interface between disk and newly inserted disk.
Further, the present invention also provides for a kind of storage device, including this for storing the disk of data, also includes the storage space management device that any one embodiment of the present invention is provided.
Should be appreciated that the multiple embodiments described by this specification are merely to illustrate and explain the present invention, be not intended to limit the present invention.And in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
Obviously, those skilled in the art can carry out various change and modification without departing from the spirit and scope of the present invention to the present invention.So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (21)
1. a disk storage space management method, it is characterised in that comprise the steps:
Identify that disk inserts the operation of storage device；
The metadata self-contained according to disk and file system, whether identify newly inserted disk carries data；
When newly inserted disk carries data, according to the instruction of user, retain the data in newly inserted disk, and the carry on a storage device of the file system in newly inserted disk is become share directory.
Method the most according to claim 1, it is characterised in that according to the self-contained metadata of disk, identify whether newly inserted disk carries the step of data and specifically include:
Judging whether disk carries metadata, if disk carries metadata, then identify disk carries data；If disk does not carry metadata, but has file system, then identify that disk carries data.
Method the most according to claim 2, it is characterised in that described become the step of share directory to specifically include the carry on a storage device of the file system in newly inserted disk:
If newly inserted disk carries metadata, by the file system mounted one-tenth share directory in the disk array RAID of newly inserted disk；
If newly inserted disk does not carries metadata but carries file system, by the file system mounted one-tenth share directory of newly inserted disk.
Method the most according to claim 1, it is characterised in that the step retaining the data in newly inserted disk specifically includes:
All disks of scanning storage device, obtain the partition list under current state in system；
If newly inserted disk carries metadata, then according to the metadata entrained by newly inserted disk, it is thus achieved that the subregion general unique identifier UUID of the disk array RAID member in described newly inserted disk；According to described partition list and described subregion general unique identifier UUID, find the subregion under system current state corresponding to described subregion general unique identifier UUID；In described storage device, re-assembly out the disk array RAID in newly inserted disk；RAID device carry according to re-assemblying out goes out share directory；
If newly inserted disk does not carry metadata, then the subregion carry in partition list is become share directory.
Method the most according to claim 4, it is characterised in that the step going out share directory according to the RAID device carry re-assemblied out specifically includes:
When the metadata comprised in the metadata entrained by disk general unique identifier UUID unique identifier UUID general with the system of storage device is consistent, the disk array RAID carry re-assemblied out is become memory space, from memory space, then recovers share directory；
When the system general unique identifier UUID of the metadata comprised in the metadata entrained by disk general unique identifier UUID Yu storage device is inconsistent, the disk array RAID carry re-assemblied out is become share directory.
Method the most according to claim 1, it is characterised in that when reaching when creating memory space trigger condition or receive the memory space establishment instruction of user's transmission of setting, execution following steps:
Choose the blank disc of storage device, and the blank disc chosen is carried out subregion, obtain newly created disk partition；
In units of newly created disk partition, create floppy disc array RAID；
Described floppy disc array RAID creates file system；
Described floppy disc array RAID information is saved in the metadata of blank disc together with the metadata mark of blank disc, to update the metadata of blank disc；
The meta-data preservation of the blank disc after updating is in the CONFIG.SYS of storage device.
Method the most according to claim 6, it is characterised in that in units of newly created disk partition, create floppy disc array RAID step specifically include:
The blank disc chosen builds the first subregion, then builds disk array RAID with the first subregion for member, as reliable memory space；And on the blank disc chosen, build the second subregion, then build disk array RAID with the second subregion for member, as unreliable memory space；
Described reliable memory space uses the mode with data redundancy ability to store data, and the disk array RAID of use includes: RAID1 or RAID5 or RAID6 or RAID10；Described unreliable memory space does not have data redundancy ability, and the disk array RAID of use includes: RAID0 or linear formula storage LINEAR.
Method the most according to claim 1, it is characterised in that described method also includes:
Receive the instruction deleting memory space；
According to the instruction of described deletion memory space, unload memory space；
Stop the disk array RAID that the memory space of needs deletion is corresponding；
The disk array RAID superblock information of each disk in removing disk array RAID and metadata；
The metadata that described memory space is corresponding is deleted in CONFIG.SYS；
If storage device does not exist other disk array, deletion system mark in CONFIG.SYS.
Method the most according to claim 1, it is characterised in that described method also includes:
Receive the instruction deleting disk；
Unload all of file system on disk to be deleted；
If the metadata mark of disk to be deleted is different from the metadata of storage device mark, then stops the disk array RAID on disk to be deleted, remove the disk array RAID superblock information on disk to be deleted and its metadata information carried.
Method the most according to claim 1, it is characterised in that the disk array RAID member of newly inserted disk itself after carry becomes share directory on a storage device, is also included:
Use described share directory, have in storage device and transmit data by disk interface between disk and newly inserted disk.
11. 1 kinds of disk storage space managing devices, it is characterised in that including:
Update identification module: for identifying that disk inserts the operation of storage device；
Data identification module: for the metadata self-contained according to disk and file system, whether identify newly inserted disk carries data；
Data reservation module: for when newly inserted disk carries data, according to the instruction of user, retain the data in newly inserted disk；
Catalogue carry module: for the carry on a storage device of the file system in newly inserted disk is become share directory.
12. devices according to claim 10, it is characterised in that described data identification module specifically includes:
First recognition unit: for when determining that disk carries metadata, then identify disk carries data；
Second recognition unit: determine that disk does not carry metadata for working as, but have file system, then identify that disk carries data.
13. devices according to claim 12, it is characterised in that described catalogue carry module specifically includes:
First share directory carry unit: in the case of newly inserted disk carries metadata, by the file system mounted one-tenth share directory in the disk array RAID of newly inserted disk；
Second share directory carry unit: in the case of newly inserted disk does not carries metadata but carries file system, by the file system mounted one-tenth share directory of newly inserted disk.
14. devices according to claim 11, it is characterised in that described data reservation module specifically includes:
Partition list obtains module: for scanning all disks of storage device, obtain the partition list under current state in system；
General unique identifier UUID acquiring unit: for when newly inserted disk carries metadata, then according to the metadata entrained by newly inserted disk, it is thus achieved that the subregion general unique identifier UUID of the disk array RAID member in described newly inserted disk；And trigger subregion lookup unit；
Subregion searches unit: for according to described partition list and described subregion general unique identifier UUID, find the subregion under system current state corresponding to described subregion general unique identifier UUID；And trigger RAID module units；
RAID module units: in described storage device, re-assembly out the disk array RAID in newly inserted disk；And trigger share directory the first carry unit；
Share directory the first carry unit: for going out share directory according to the RAID device carry re-assemblied out；
Share directory the second carry unit: if not carrying metadata for newly inserted disk, then the subregion carry in partition list is become share directory.
15. devices according to claim 14, it is characterised in that described share directory the first carry unit specifically includes:
Memory space carry subelement: for when the metadata comprised in the metadata entrained by disk general unique identifier UUID unique identifier UUID general with the system of storage device is consistent, the disk array RAID carry re-assemblied out is become memory space, then triggers share directory revertant unit；
Share directory recovers subelement: for recovering share directory from memory space；
Share directory carry subelement: for when the system general unique identifier UUID of the metadata comprised in the metadata entrained by disk general unique identifier UUID Yu storage device is inconsistent, the disk array RAID carry re-assemblied out is become share directory.
16. devices according to claim 11, it is characterised in that described device also includes:
Blank disc division module: for when reaching when creating memory space trigger condition or receive the memory space establishment instruction of user's transmission of setting, choose the blank disc of storage device, and the blank disc chosen is carried out subregion, obtain newly created disk partition；
Floppy disc array RAID creation module: in units of newly created disk partition, create floppy disc array RAID；
File system creation module: for creating file system on described floppy disc array RAID；
Metadata updates module: for described floppy disc array RAID information is saved in the metadata of blank disc together with the metadata mark of blank disc, to update the metadata of blank disc；
Meta-data preservation module: the meta-data preservation of the blank disc after updating is in the CONFIG.SYS of storage device.
17. devices according to claim 16, it is characterised in that described floppy disc array RAID creation module specifically includes:
Reliable subregion construction unit: for building the first subregion on the blank disc chosen；
Reliable memory space construction unit: for building disk array RAID with the first subregion for member, as reliable memory space；
Unreliable subregion construction unit: for building the second subregion on the blank disc chosen；
Unreliable memory space construction unit: build disk array RAID for member with the second subregion, as unreliable memory space；
Described reliable memory space uses the mode with data redundancy ability to store data, and the disk array RAID of use includes: RAID1 or RAID5 or RAID6 or RAID10；Described unreliable memory space does not have data redundancy ability, and the disk array RAID of use includes: RAID0 or linear formula storage LINEAR.
18. devices according to claim 11, it is characterised in that described device also includes:
Delete memory space command reception module: for receiving the instruction deleting memory space；
Memory space Unload module: for the instruction according to described deletion memory space, unloads memory space；
Disk array RAID stopping modular: for stopping the disk array RAID that the memory space of needs deletion is corresponding；
First disk array RAID information removing module: the disk array RAID superblock information of each disk in removing disk array RAID and metadata；
Metadata removing module: for deleting the metadata that described memory space is corresponding in CONFIG.SYS；
System banner removing module: if there is not other disk array in storage device, deletion system mark in CONFIG.SYS.
19. devices according to claim 11, it is characterised in that described device also includes:
Delete disk command reception module: for receiving the instruction deleting disk；
File system Unload module: for unloading all of file system on disk to be deleted；
Disk array RAID stopping modular: for when the metadata of disk to be deleted identifies different from the metadata of storage device mark, stopping the disk array RAID on disk to be deleted；
Second disk array RAID information removes module: for removing the disk array RAID superblock information on disk to be deleted and its metadata information carried.
20. devices according to claim 11, it is characterised in that described device also includes: use described share directory, have in storage device and transmit data by disk interface between disk and newly inserted disk.
21. 1 kinds of storage devices, it is characterised in that include the disk for storing data, also include the disk storage space managing device described in any one in claim 11-20.
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| CN201510004657.XA CN105824572B (en) | 2015-01-05 | 2015-01-05 | A kind of disk storage space management method, device and storage equipment |
| PCT/CN2015/074030 WO2016110004A1 (en) | 2015-01-05 | 2015-03-11 | Management method and apparatus for disk storage space, and storage device |
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| WO2016110004A1 (en) | 2016-07-14 |
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