CN105824572B

CN105824572B - Disk storage space management method, device and storage device

Info

Publication number: CN105824572B
Application number: CN201510004657.XA
Authority: CN
Inventors: 谭小兵; 范超; 陈湘宁
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2015-01-05
Filing date: 2015-01-05
Publication date: 2019-06-04
Anticipated expiration: 2035-01-05
Also published as: CN105824572A; WO2016110004A1

Abstract

A kind of disk storage space management method, device and storage equipment.Described method includes following steps: the operation of identification disk insertion storage equipment；According to disk self-contained metadata and file system, identify new insertion disk whether carrying data；When the disk being newly inserted into carries data, according to the instruction of user, retain the data in new insertion disk, and by the file system in new insertion disk on a storage device carry at share directory or by the file system in the disk array RAID of new insertion disk on a storage device carry at share directory.Described device includes, data identification module, data reservation module, catalogue carry module.The method, device and storage equipment can perceive the variation of storage equipment disk, so that user retains the data in old disk.

Description

A kind of disk storage space management method, device and storage equipment

Technical field

The present invention relates to memory technology more particularly to a kind of disk storage space management methods, device and storage equipment.

Background technique

Nowadays, mankind's stepped into information epoch already.Various electronic equipments, such as smart phone, PC, digital camera, with people Life it is closely related.And with the appearance of Blu-ray video, lossless music, high pixel photo etc., family data amount occurs Increase on a large scale.Therefore, the demand to family's special purpose memory devices increasingly enhances.

Software PLC (Redundant Arrays of Independent Disks, disk array), refers to Software Create Disk array.By multiple block devices (such as disk, disk partition, logical volume) as member, by technologies such as stripings Generate a kind of new block device with data protection function.Specifically refer in linux system using mdadm order with "- The block device that C " or "-create " parameter generate, hereinafter referred to as RAID.

Domestic consumer occasionally wants to both transfer to storage system to be managed collectively the old hard disk in family, to utilize storage The various upper level applications of system access to disk, and retain the data in old hard disk.This old disk may be Following situation: may be the disk pulled from the operating systems such as Windows, Linux, MAC；It may be from our another The disk pulled in set family storage equipment；It may be both above situation any amount (in the range that physics slot position is supported It is interior) mixing of disk.

Because RAID is based on multiple disk partition, and a disk can be divided into multiple subregions, so, once Disk changes, and such as damages, plugs and unplugs, and will influence multiple RAID simultaneously, if the disk member of RAID is more, that by The RAID of influence is also more.

After one RAID device is built, MD (Mult iple Devices, multiple devices) driving is to pass through primary and secondary Device number manages RAID member's.One disk after extraction is gone, then turns back to and, although the at this moment same disk, magnetic Disk sequence number is unchanged, but original subregion in disk may it is deleted, modify or repartition, and no matter family is special With the system of storage equipment in identification, the secondary device number of disk partition whether with it is original consistent, above situation is all MD driving It can not handle.For completely new disk, data do not need the disk retained in other words, can directly dispose the number in disk According to being managed in the way of us；But for the old disk of user, disk (or its subregion) once becomes RAID Member, then, the data in disk can all lose.How data in diversified old disk are retained, and to magnetic Disk is managed collectively, and user's access and problem to be solved are supplied to.Thus, it is necessary to be stored in hyperdisk empty Between when actively perceive these variations, accurately identify each member of RAID, and processing appropriate is carried out to RAID.

Summary of the invention

In view of this, the present invention provides a kind of disk storage space management method, device and storage equipment, it can be to storage The variation of equipment disk is perceived, so that user retains the data in old disk.

Based on a kind of above-mentioned purpose disk storage space management method provided by the invention, include the following steps:

Identify the operation of disk insertion storage equipment；

According to disk self-contained metadata and file system, identify new insertion disk whether carrying data；

When the disk being newly inserted into carries data, according to the instruction of user, retain the data in new insertion disk, and will be new Be inserted into disk in file system on a storage device carry at share directory.

Optionally, the step of whether carrying data according to the self-contained metadata of disk, the new insertion disk of identification is specific Include:

Judge whether disk carries metadata, if disk carries metadata, identifies the carrying data of disk；If disk is not Metadata is carried, but there is file system, then identifies that disk carries data.

Carry is specifically included the file system by new insertion disk at the step of share directory on a storage device:

If the disk that is newly inserted into carries metadata, by the disk array RAID of new insertion disk it is file system mounted at Share directory；

If the disk being newly inserted into does not carry metadata but carries file system, by new insertion disk it is file system mounted at Share directory.

Optionally, the step of retaining the data in new insertion disk, specifically includes:

All disks of scanning storage equipment, obtain the partition list in system under current state；

If the disk being newly inserted into carries metadata, according to metadata entrained by new insertion disk, acquisition is described newly to be inserted Enter the subregion Universally Unique Identifier UUID of the disk array RAID member in disk；According to the partition list and the subregion Universally Unique Identifier UUID finds point under the corresponding system current state of the subregion Universally Unique Identifier UUID Area；In the storage equipment, the disk array RAID in new insertion disk is re-assemblied out；According to the RAID re-assemblied out Hanging equipment sets out share directory；

If the disk being newly inserted into does not carry metadata, by the subregion carry in partition list at share directory.

Optionally, the step of going out share directory according to the RAID device carry re-assemblied out specifically includes:

The system of the metadata Universally Unique Identifier UUID and storage equipment that include in the metadata entrained by the disk When Universally Unique Identifier UUID is consistent, the disk array RAID carry re-assemblied out at memory space, then from storage Share directory is recovered in space；

The system of the metadata Universally Unique Identifier UUID and storage equipment that include in the metadata entrained by the disk When Universally Unique Identifier UUID is inconsistent, the disk array RAID carry re-assemblied out at share directory.

Optionally, when the creation memory space trigger condition for reaching setting or the memory space creation for receiving user's transmission When instruction, following steps are executed:

The blank disc of storage equipment is chosen, and subregion is carried out to the blank disc chosen, obtains newly created disk point Area；

As unit of newly created disk partition, soft magnetism disk array RAID is created；

File system is created on the soft magnetism disk array RAID；

The soft magnetism disk array RAID information is saved in first number of blank disc together with the metadata mark of blank disc In, to update the metadata of blank disc；

By the meta-data preservation of updated blank disc in the system configuration file of storage equipment.

Optionally, as unit of newly created disk partition, creation soft magnetism disk array RAID the step of, specifically includes:

The first subregion is constructed on the blank disc chosen, then disk array RAID is constructed for member with the first subregion, is made For reliable memory space；And the second subregion is constructed on the blank disc chosen, then disk battle array is constructed for member with the second subregion RAID is arranged, as unreliable memory space；

The reliable memory space storing data, the disk array RAID used in such a way that there is data redundancy ability It include: RAID1 or RAID5 or RAID6 or RAID10；The unreliable memory space does not have data redundancy ability, uses Disk array RAID include: RAID0 or linear formula storage LINEAR.

Optionally, the method also includes:

Receive the instruction for deleting memory space；

According to the instruction for deleting memory space, memory space is unloaded；

Stop the corresponding disk array RAID of memory space for needing to delete；

Remove the super block message of disk array RAID and metadata of each disk in disk array RAID；

The corresponding metadata of the memory space is deleted in system configuration file；

Other disk arrays are not present in equipment if storing, deletion system identifies in system configuration file.

Optionally, the method also includes:

Receive the instruction for deleting disk；

Unload file system all on disk to be deleted；

If the metadata mark of disk to be deleted is different from the storage metadata mark of equipment, stop disk to be deleted On disk array RAID, remove the super block message of disk array RAID on disk to be deleted and its metadata carried letter Breath.

Optionally, by the disk array RAID member of new insertion disk itself on a storage device carry at share directory it Afterwards, further includes:

Using the share directory, transmitted between the disk that storage equipment has disk and is newly inserted by disk interface Data.

Meanwhile the present invention also provides a kind of disk storage space managing devices, comprising:

Insertion operation identification module: the operation of disk insertion storage equipment for identification；

Data identification module: for the metadata and file system self-contained according to disk, new insertion disk is identified Whether data are carried；

Data reservation module: for according to the instruction of user, retaining new insertion magnetic when the disk being newly inserted into carries data Data in disk；

Catalogue carry module: for by the file system in new insertion disk on a storage device carry at share directory.

Optionally, the data identification module specifically includes:

First recognition unit: for when determining disk carrying metadata, then identifying the carrying data of disk；

Second recognition unit: for not carrying metadata when determining disk, but there is file system, then identifies that disk carries Data.

Optionally, the catalogue carry module specifically includes:

First share directory carry unit: for will newly be inserted into magnetic in the case where the disk being newly inserted into carries metadata It is file system mounted at share directory in the disk array RAID of disk；

Second share directory carry unit: for not carrying metadata in the disk being newly inserted into but carrying the feelings of file system Under condition, by the file system mounted at share directory of new insertion disk.

Optionally, the data reservation module specifically includes:

Partition list obtains module: for scanning all disks of storage equipment, obtaining point in system under current state Area's list；

Universally Unique Identifier UUID acquiring unit: for when the disk being newly inserted into carries metadata, then being inserted according to new Enter metadata entrained by disk, obtains the general unique identification of subregion of the disk array RAID member in the new insertion disk Code UUID；And trigger subregion searching unit；

Subregion searching unit: for finding according to the partition list and the subregion Universally Unique Identifier UUID Subregion under the corresponding system current state of the subregion Universally Unique Identifier UUID；And trigger RAID assembling unit；

RAID assembling unit: in the storage equipment, re-assemblying out the disk array in new insertion disk RAID；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:, will be in partition list if the disk for being newly inserted into does not carry metadata Subregion carry is at share directory.

Optionally, the first carry of share directory unit specifically includes:

Memory space carry subelement: for working as the general unique identification of metadata for including in metadata entrained by disk When code UUID is consistent with the storage system Universally Unique Identifier UUID of equipment, the disk array RAID carry re-assemblied out At memory space, then triggers share directory and reply subelement；

Share directory restores subelement: for recovering share directory from memory space；

Share directory carry subelement: for working as the general unique identification of metadata for including in metadata entrained by disk When the code UUID and system Universally Unique Identifier UUID of storage equipment inconsistent, the disk array RAID re-assemblied out is hung Carry into share directory.

Optionally, described device further include:

Blank disc division module: it is sent for working as to reach the creation memory space trigger condition of setting or receive user Memory space when creating instruction, choose the blank disc of storage equipment, and subregion is carried out to the blank disc chosen, obtain new The disk partition of creation；

Soft magnetism disk array RAID creation module: for creating soft magnetism disk array as unit of newly created disk partition RAID；

File system creation module: for creating file system on the soft magnetism disk array RAID；

Metadata updates module: it is protected for identifying the soft magnetism disk array RAID information together with the metadata of blank disc It is stored in the metadata of blank disc, to update the metadata of blank disc；

Meta-data preservation module: for by the meta-data preservation of updated blank disc storage equipment system configuration In file.

Optionally, the soft magnetism disk array RAID creation module specifically includes:

Reliable subregion construction unit: for constructing the first subregion on the blank disc chosen；

Reliable memory space construction unit: for being that member constructs disk array RAID with the first subregion, as reliably depositing Store up space；

Unreliable subregion construction unit: for constructing the second subregion on the blank disc chosen；

Unreliable memory space construction unit: it is that member constructs disk array RAID with the second subregion, is deposited as unreliable Store up space；

Optionally, described device further include:

Delete memory space command reception module: for receiving the instruction for deleting memory space；

Memory space Unload module: for unloading memory space according to the instruction for deleting memory space；

Disk array RAID stopping modular: the corresponding disk array RAID of memory space for stopping needing to delete；

First disk array RAID information removes module: removing the disk array of each disk in disk array RAID The super block message of RAID and metadata；

Metadata removing module: for deleting the corresponding metadata of the memory space in system configuration file；

System banner removing module: if other disk arrays are not present in equipment for storing, in system configuration file Deletion system mark.

Optionally, described device further include:

Delete disk command reception module: for receiving the instruction for deleting disk；

File system Unload module: for unloading file system all on disk to be deleted；

Disk array RAID stopping modular: the metadata for metadata mark and storage equipment when disk to be deleted When identifying different, stop the disk array RAID on disk to be deleted；

Second disk array RAID information removes module: for removing the disk array RAID superblock on disk to be deleted Information and its metadata information carried.

Optionally, described device further include: the share directory is used, in the magnetic that storage equipment has disk and is newly inserted into Data are transmitted by disk interface between disk.

Further, the present invention also provides a kind of storage equipment, further include that the present invention appoints including disk for storing data It anticipates disk storage space managing device provided by an embodiment.

From the above it can be seen that disk storage space management method provided by the invention, device and storage equipment, when It, can be the file system in disk with share directory if the disk being newly inserted into contains data when storage equipment is newly inserted into disk Form be presented to the user use；Software PLC can also be constructed on disk, the memory space of carry Cheng Xin, then creation is shared Catalogue is used to user.User can not only be allowed to make full use of disk old in family in this way, and when user needs ours It, can be very convenient when progress data are moved into, moved out in equipment.

Detailed description of the invention

Fig. 1 is the method flow schematic diagram of the embodiment of the present invention；

Fig. 2 is that the disk type of the embodiment of the present invention shifts schematic diagram；

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.

Specific embodiment

In order to provide effective implementation, the present invention provides following embodiments, below in conjunction with Figure of description to this Inventive embodiments are illustrated.

Present invention firstly provides a kind of disk storage space management methods, include the steps that as shown in Figure 1:

Step 101: the operation of identification disk insertion storage equipment；

Step 102: according to disk self-contained metadata and file system, identify new insertion disk whether carrying number According to；

Step 103: when the disk being newly inserted into carries data, according to the instruction of user, retaining the number in new insertion disk According to, and by the file system in new insertion disk on a storage device carry at share directory.

From the above it can be seen that disk storage space management method provided by the invention, to the disk containing data, File system in disk can be presented to the user use in the form of share directory, so that user sets to family's specific store When standby middle insertion disk, the data in disk can be retained according to their own needs, disk is avoided to insert position in change Internal zone dividing is caused to be deleted and lose when setting.

In a specific embodiment of the present invention, metadata is assigned for the disk being connected in family's special purpose memory devices, It include for identifying disk different disks being known by metadata when being plugged into storage equipment in the metadata Not, it distinguishes.

In some embodiment of the invention, whether carried according to the self-contained metadata of disk, the new insertion disk of identification The step of data, specifically includes:

In the specific embodiment of the invention, the storage system mark in the configuration file of storage equipment, when disk is deposited at this It is established in storage equipment after subregion, creation memory space, the system banner of the storage equipment can be written into the metadata of disk, Metadata as disk identifies, and the system banner of different storage device is generally different, thus, according to the metadata mark of disk Know, so that it may learn whether data source that disk currently carries is storage equipment that disk is newly inserted into, to learn disk Whether type is to store the own disk of equipment.

In the specific embodiment of the invention, magnetic disk metadata includes metadata UUID (Universally Unique Identifier, Universally Unique Identifier), RAID information；The RAID information further comprise RAID title, RAID level, File system indicator, RAID number of members, RAID member's size and each subregion UUID.Wherein, the entitled disk of RAID Array title, RAID level can be LINEAR, RAID0, RAID1, RAID5, RAID6, RAID10 etc..RAID number of members, RAID member's size is used to indicate the number of partitions, each partition size of disk array.For example, be respectively 100 with size, 200, 300 three partition creatings, one RAID, then it is 100 that RAID number of members, which is 3, RAID member's size,.It is each on same disk Subregion all has different Universally Unique Identifier UUID.When a disk carry out subregion on a storage device and construct RAID it Afterwards, storage equipment can assign the magnetic disk metadata, and the metadata UUID and memory apparatus system UUID mono- that disk is endowed It causes, after the disk is extracted from storage equipment later, if disk is not formatted as blank disc, the metadata of disk can be always It is retained on disk.

In the specific embodiment of the invention, the disk being plugged into storage equipment is divided into data disks, compatible disc, user Disk, blank disc.Data disks: including metadata information, and metadata mark UUID and current system UUID matches；Compatible disc: Comprising metadata information, but metadata mark UUID and current system UUID is mismatched；User disk: not including metadata information, It but include file system, data need to retain；Blank disc: not including metadata information, does not include file system yet.When disk is inserted It is connected in storage equipment, storage equipment judges metadata UUID and the storage of disk by metadata entrained by identification disk Whether the system UUID of equipment is consistent, if the metadata UUID of disk is consistent with the storage system UUID of equipment, then the disk For data disks；If disk has metadata but metadata UUID and the system UUID of storage equipment are inconsistent, then the disk is Compatible disc, the i.e. disk may be to pull from other storage equipment, and upper the one of the disk institute grafting stores equipment pair The disk has carried out subregion；If disk does not have metadata but has file system, then the disk is user disk, the i.e. magnetic Disk may be to pull from other storage equipment, other storage equipment may be for example Windows system, linux system, MacOS (Apple Macintosh operating system) system etc.；And the storage equipment of the disk last time institute grafting is carrying out subregion to the disk or is writing Metadata is not assigned to the disk when entering data, from the storage of the systems such as Windows system, linux system, MacOS system The disk pulled in equipment can not have metadata proposed by the invention；If disk does not have metadata or file system System does not carry data then the disk is blank disc, the problem of loss of data is not present on being plugged into new storage equipment. In embodiments of the present invention, the affiliated type of disk is changed as the management of memory space operates.The state of disk type Transfer figure such as Fig. 2 shows, in Fig. 2, " being placed in other storage equipment ", which refers to, uses method provided by the invention to assign member for disk The storage equipment of data, and the storage equipment not with systems such as Windows, Linux, MacOS in the prior art.Than Such as, the old disk of user, retains by data, is then changed into user disk；When user is not desired to retain the data in user disk again When, user disk can be deleted, at this moment the disk is then changed into blank disc, and after creating memory space on blank disc, the disk is again It is changed into data disks.

In a specific embodiment of the present invention, the metadata further includes the letters such as version number, check value, metadata signature Breath, for verifying the validity of metadata when identification parses metadata.

Disk carries the case where data including two kinds: first is that, disk carries metadata；At this moment the data carried in disk are Our own equipment creation, include RAID in disk, again includes file system in RAID；Second is that disk directly carries text Part system；At this moment the data carried in disk are other systems (such as Windows, Linux, MacOS etc.) creations.It is described to incite somebody to action Carry specifically includes file system in new insertion disk at the step of share directory on a storage device:

In some embodiment of the invention, the step of retaining the data in new insertion disk, specifically includes:

The step of going out share directory according to the RAID device carry re-assemblied out specifically includes:

In some embodiment of the invention, when the creation memory space trigger condition for reaching setting or receive user send Memory space create instruction when, execute following steps:

File system is created on the soft magnetism disk array RAID；

The step of as unit of newly created disk partition, creation soft magnetism disk array RAID, specifically includes:

In a specific embodiment of the present invention, reliable RAID memory space is built-up by the subregion of different disk, can The RAID level of choosing has RAID1, RAID5, RAID6, RAID10；Insecure RAID memory space is by individual one on disk Subregion building, optional RAID level have RAID0, LINEAR (linear formula storage).The partition size in reliable memory space can be with It flexibly determines as needed: 30% or 20% as disk total capacity may be selected；It may be alternatively provided as a fixed size, such as 300G, 500G etc..Here " reliable " and " unreliable " is to measure the case where disk failures, loss.Reliable memory is empty Between in data, its storage this disk in lose in the case where, additionally it is possible to identical backup is found in other disks Data.For example, constructing a reliable memory space in two disks A, B, the reliable memory space is by identical in two disks The space of size or different size of space are constituted, can simultaneously when the reliable memory space of data deposit disk A or disk B It is stored in the reliable memory space of disk B or disk A, when disk A or disk B is damaged, the reliable memory of disk B or disk A are empty Between in identical copy data still be able to call, thus guarantee data storage reliability.

In a specific embodiment of the invention, metadata is placed on the position that disk most starts, then each disk It is divided into the area Liang Ge, first subregion occupies the certain percentage of total capacity, such as 30%；Second subregion is the 70% of total capacity. The combination of reliable memory spatial choice RAID1, the combination of unreliable memory space selection RAID0.Disk two-by-two into Row combination, can be divided into two kinds of situations according to the quantity of the disk in system:

Fig. 3 A is the situation that even number disk is shared in system.At this moment one can be constructed between two disks reliably to deposit Store up space, two unreliable memory spaces.The capacity in reliable memory space is the 30% of disk size, and each unreliable storage is empty Between capacity be disk size 70%.At this moment reliable memory space is that had truly by two member compositions Data redundancy ability.In the case where one disk failures, it is ensured that the data in reliable memory space are not lost.

Fig. 3 B is the situation for having odd number disk in system.At this moment first subregion still constructs RAID in the way of RAID1. At this moment only one member of reliable memory space cannot accomplish truly reliable.But when there is new disk insertion When, just increase new member to reliable memory space by the strategy of even number disk, realizes really reliable.That is, working as When having new disk insertion storage equipment, by 30% memory space of new disk together with first of disk shown in Fig. 3 B Together, as reliable memory space, new in disk 70% memory space of being inserted into is together with the of disk shown in Fig. 3 B for subregion Two subregions, respectively as unreliable memory space.

Assuming that a storage unit is made of two disks, the capacity of single disk is U, and reliable memory space uses The mode of RAID1, unreliable memory space is by the way of RAID0.So: in the above-described embodiments, with a subregion for one A storage cell constructs RAID, then can simultaneously obtain a reliable memory space, two unreliable memory spaces, total available sky Between are as follows: total size: 30%*U+70%*2*U=1.7U.And if being that a storage cell constructs RAID with a disk, it Obtain a reliable memory space；Obtain one or two unreliable memory spaces.If obtaining one reliably to deposit Space is stored up, then memory space total size is (U+U) * 50%=U；If obtaining one or two unreliable memory space, that Memory space total size are as follows: U+U=2U.

The reliable memory space number that can simultaneously obtain if the subregion to disk is thinner and unreliable memory space Number all can be more, and the size of total available space is also more flexible.

In some embodiment of the invention, the method also includes:

Receive the instruction for deleting memory space；

Stop the corresponding soft magnetism disk array RAID of memory space for needing to delete；

Remove the super block message of disk array RAID and metadata of each disk in soft magnetism disk array RAID；

In some embodiment of the invention, the method also includes:

Receive the instruction for deleting disk；

Unload file system all on disk to be deleted；

If the metadata mark of disk to be deleted is different from the storage metadata mark of equipment, stop disk to be deleted On soft magnetism disk array RAID, remove the super block message of disk array RAID on disk to be deleted and its metadata carried Information.

In some embodiment of the invention, the disk array RAID member of new insertion disk itself is hung on a storage device After carrying into share directory, further includes:

Under practical application scene, user newly buys a family storage equipment, but at this moment have existed in user family compared with A large amount of data with existing, such as photo, video, document.For traditional household NAS (Network Attached Storage, Network attached storage) equipment, at this moment can only by way of network or the mode of USB external tapping data with existing moved into it is new Storage center.If data volume has the even upper T of several hundred G, data transmission will be taken a substantial amount of time.It can be propped up using the present invention The characteristic for holding user data disk is greatly improved the efficiency of migration of subscriber data.

In the specific embodiment of the invention, firstly, creating memory space on the existing disk of storage equipment, then depositing Storage is spatially created that share directory；Then user data disk is inserted into storage equipment, selects data to retain, the use being newly inserted into User data disk carry becomes share directory.Share directory is exactly the basic unit that user can directly operate, so, at this moment only need Data copy is done between both share directories just, and this copy is exactly on same system between different disk Data to copying, data transmission period largely shortens.

Equipment is stored for others, to the data in old disk are imported into storage system, it is necessary to first magnetic Disk is linked into another computer, then allows data in the computer reading disk, then data are transferred to by network and are deposited Storage system is finally saved in data in memory space by storage system.This mode data need the reading by computer, Network transmission, the process of storage system write-in, 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, user data disk with It is shared system bus (such as PCI:Peripheral Component Interconnect, peripheral hardware between memory space data disks Component connection standard), so can almost reach disk interface, such as SATA (Serial Advanced Technology Attachment, Serial Advanced Technology Attachment), (Integrated Drive Electronics, integrated driving electronics are set IDE It is standby) maximum rate.Be far from its transmission speed USB interface, network interface can ratio.For supporting the SATA of hot plug Disk, moreover it is possible to accomplish as USB device easily plug and play, greatly improve the use feeling of user.

Further, the present invention provides a kind of disk storage space managing device, and structure is as shown in Figure 4, comprising:

In some embodiment of the invention, the data identification module specifically includes:

In some embodiment of the invention, the catalogue carry module specifically includes:

In some embodiment of the invention, the data reservation module specifically includes:

In some embodiment of the invention, the first carry of share directory unit specifically includes:

In some embodiment of the invention, described device further include:

In some embodiment of the invention, the soft magnetism disk array RAID creation module specifically includes:

In some embodiment of the invention, described device further include:

In some embodiment of the invention, described device further include: use the share directory, have magnetic in storage equipment Data are transmitted by disk interface between disk and the disk being newly inserted into.

Further, the present invention also provides a kind of storage equipment, and the disk including this for storing data, further includes the present invention Storage space management device provided by any one embodiment.

It should be appreciated that multiple embodiments described in this specification are merely to illustrate and explain the present invention, it is not used to limit The fixed present invention.And in the absence of conflict, the features in the embodiments and the embodiments of the present application can be combined with each other.

Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims

1. a disk storage space management method, is characterized in that, comprises the steps:

Identify the operation of inserting a disk into a storage device;

According to the metadata and file system carried by the disk itself, identify whether the newly inserted disk carries data;

When the newly inserted disk carries data, according to the user's instruction, the data in the newly inserted disk is retained, including: scanning all disks of the storage device to obtain the partition list in the current state of the system; if the newly inserted disk carries metadata, Then, according to the metadata carried by the newly inserted disk, obtain the partition universal unique identifier UUID of the disk array RAID member in the newly inserted disk; according to the partition list and the partition universal unique identifier UUID, find the The partition in the current state of the system corresponding to the partition universal unique identifier UUID; on the storage device, reassemble the disk array RAID newly inserted into the disk; mount the shared directory according to the reassembled RAID device; If the disk does not carry metadata, mount the partition in the partition list as a shared directory;

Mount the newly inserted file system on the disk as a shared directory on the storage device.

2. The method according to claim 1, wherein the step of identifying whether the newly inserted disk carries data according to the metadata carried by the disk itself specifically comprises:

Determine whether the disk carries metadata. If the disk carries metadata, identify the data carried on the disk; if the disk does not carry metadata, but has a file system, identify the data carried on the disk.

3. The method according to claim 2, wherein the step of mounting the file system newly inserted into the disk into a shared directory on the storage device specifically comprises:

If the newly inserted disk carries metadata, mount the file system in the RAID array of the newly inserted disk as a shared directory;

If the newly inserted disk does not carry metadata but carries a file system, mount the file system of the newly inserted disk as a shared directory.

4. The method according to claim 1, wherein the step of mounting the shared directory according to the reassembled RAID device specifically comprises:

When the metadata UUID contained in the metadata carried by the disk is consistent with the system universal unique identifier UUID of the storage device, mount the reassembled disk array RAID as a storage space, and then restore from the storage space out the shared directory;

When the metadata universal unique identifier UUID contained in the metadata carried by the disk is inconsistent with the system universal unique identifier UUID of the storage device, mount the reassembled disk array RAID as a shared directory.

5. method according to claim 1, is characterized in that, when reaching the creation storage space trigger condition of setting or receiving the storage space creation instruction that user sends, execute the following steps:

Select the blank disk of the storage device, and partition the selected blank disk to obtain the newly created disk partition;

Create a floppy disk array RAID with the newly created disk partition as a unit;

creating a file system on the floppy disk array RAID;

saving the RAID information of the floppy disk array together with the metadata identification of the blank disk into the metadata of the blank disk to update the metadata of the blank disk;

Save the metadata of the updated blank disk in the system configuration file of the storage device.

6. method according to claim 5, is characterized in that, with the newly created disk partition as unit, the step of creating floppy disk array RAID specifically comprises:

Build the first partition on the selected blank disk, and then use the first partition as a member to build a disk array RAID as a reliable storage space; and build a second partition on the selected blank disk, and then use the second partition as a member to build a disk array RAID, as unreliable storage space;

The reliable storage space stores data in a way with data redundancy capability, and the used disk array RAID includes: RAID1, or RAID5, or RAID6, or RAID10; the unreliable storage space does not have data redundancy capability, and the used disks Array RAID includes: RAID0, or linear storage LINEAR.

7. The method of claim 1, wherein the method further comprises:

Receive an instruction to delete storage space;

According to the instruction for deleting the storage space, unload the storage space;

Stop the disk array RAID corresponding to the storage space to be deleted;

Clear the disk array RAID super block information and metadata of each disk in the disk array RAID;

Delete the metadata corresponding to the storage space in the system configuration file;

If there are no other disk arrays in the storage device, delete the system ID in the system configuration file.

8. The method of claim 1, wherein the method further comprises:

Receive an instruction to delete the disk;

Unmount all file systems on the disk to be deleted;

If the metadata identifier of the disk to be deleted is different from the metadata identifier of the storage device, the disk array RAID on the disk to be deleted is stopped, and the disk array RAID super block information and the metadata information carried by the disk array RAID on the disk to be deleted are cleared.

9. The method according to claim 1, wherein after the newly inserted disk array RAID member of the disk itself is mounted as a shared directory on the storage device, the method further comprises:

Using the shared directory, data is transferred through the disk interface between the existing disk of the storage device and the newly inserted disk.

10. A disk storage space management device, comprising:

Insertion operation identification module: used to identify the operation of inserting a disk into a storage device;

Data identification module: used to identify whether the newly inserted disk carries data according to the metadata and file system carried by the disk itself;

Data retention module: when the newly inserted disk carries data, according to the user's instruction, retain the data newly inserted into the disk; the data retention module specifically includes:

Partition list acquisition module: used to scan all disks of the storage device to obtain the partition list in the current state of the system;

Universal unique identifier UUID obtaining unit: used to obtain the partition universal unique identifier UUID of the disk array RAID member in the newly inserted disk according to the metadata carried by the newly inserted disk when the newly inserted disk carries metadata ; and trigger the partition search unit;

Partition search unit: for finding the partition in the current state of the system corresponding to the partition universal unique identifier UUID according to the partition list and the partition universal unique identifier UUID; and triggering the RAID assembly unit;

RAID assembly unit: used to reassemble the disk array RAID newly inserted into the disk on the storage device; and trigger the first mount unit of the shared directory;

The first mounting unit of the shared directory: used to mount the shared directory according to the reassembled RAID device;

Shared directory second mounting unit: used to mount the partitions in the partition list as a shared directory if the newly inserted disk does not carry metadata;

Directory mount module: used to mount the file system newly inserted into the disk as a shared directory on the storage device.

11. The device according to claim 10, wherein the data identification module specifically comprises:

The first identification unit: used to identify the data carried by the disk when it is determined that the disk carries metadata;

The second identification unit is used to identify that the disk carries data when it is determined that the disk does not carry metadata but has a file system.

12. The apparatus according to claim 11, wherein the directory mounting module specifically comprises:

The first shared directory mounting unit: used to mount the file system in the disk array RAID of the newly inserted disk into a shared directory when the newly inserted disk carries metadata;

The second shared directory mounting unit: used to mount the file system of the newly inserted disk into a shared directory when the newly inserted disk does not carry metadata but carries a file system.

13. The apparatus according to claim 10, wherein the first mounting unit of the shared directory specifically comprises:

Storage space mounting sub-unit: used to mount the reassembled disk array RAID as storage space, and then trigger the shared directory reply subunit;

Shared directory recovery subunit: used to recover the shared directory from the storage space;

Shared directory mount subunit: used to mount the reassembled disk array RAID as Shared directory.

14. The apparatus of claim 10, wherein the apparatus further comprises:

Blank disk partition module: When the set trigger condition for creating storage space is reached or the storage space creation instruction sent by the user is received, the blank disk of the storage device is selected, and the selected blank disk is partitioned to obtain a newly created disk. partition;

floppy disk array RAID creation module: used to create a floppy disk array RAID with the newly created disk partition as a unit;

File system creation module: used to create a file system on the floppy disk array RAID;

Metadata updating module: for storing the RAID information of the floppy disk array together with the metadata identification of the blank disk in the metadata of the blank disk, to update the metadata of the blank disk;

Metadata saving module: used to save the metadata of the updated blank disk in the system configuration file of the storage device.

15. The apparatus according to claim 14, wherein the floppy disk array RAID creation module specifically comprises:

Reliable partition building unit: used to build the first partition on the selected blank disk;

Reliable storage space construction unit: used to build a disk array RAID with the first partition as a member, as a reliable storage space;

Unreliable partition building unit: used to build a second partition on the selected blank disk;

Unreliable storage space construction unit: use the second partition as a member to build a disk array RAID as an unreliable storage space;

16. The apparatus of claim 10, wherein the apparatus further comprises:

Delete storage space instruction receiving module: used to receive an instruction to delete storage space;

Storage space unloading module: used to unload the storage space according to the instruction for deleting the storage space;

Disk array RAID stop module: used to stop the disk array RAID corresponding to the storage space to be deleted;

The first disk array RAID information clearing module: clears the disk array RAID super block information and metadata of each disk in the disk array RAID;

Metadata deletion module: used to delete the metadata corresponding to the storage space in the system configuration file;

System ID deletion module: used to delete the system ID in the system configuration file if there are no other disk arrays in the storage device.

17. The apparatus of claim 10, wherein the apparatus further comprises:

Delete disk command receiving module: used to receive the command to delete the disk;

File system unloading module: used to unload all file systems on the disk to be deleted;

Disk array RAID stop module: used to stop the disk array RAID on the disk to be deleted when the metadata identification of the disk to be deleted is different from the metadata identification of the storage device;

The second disk array RAID information clearing module: used to clear the disk array RAID super block information on the disk to be deleted and the metadata information carried by the disk array.

18 . The apparatus according to claim 10 , wherein the apparatus further comprises: using the shared directory to transmit data between the existing disk and the newly inserted disk in the storage device through a disk interface. 19 .

19. A storage device, characterized by comprising a magnetic disk for storing data, and further comprising the disk storage space management device according to any one of claims 10-18.