CN105824572B - A kind of disk storage space management method, device and storage equipment - Google Patents
A kind of disk storage space management method, device and storage equipment Download PDFInfo
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
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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
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；
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, 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:
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.
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:
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.
In some embodiment of the invention, 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.
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.
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:
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.
The step of as unit of newly created disk partition, creation soft magnetism disk array RAID, 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.
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；
According to the instruction for deleting memory space, memory space is unloaded；
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；
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.
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:
Using the share directory, transmitted between the disk that storage equipment has disk and is newly inserted by disk interface
Data.
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:
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.
In some embodiment of the invention, 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.
In some embodiment of the invention, 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.
In some embodiment of the invention, 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.
In some embodiment of the invention, 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.
In some embodiment of the invention, 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.
In some embodiment of the invention, 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；
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.
In some embodiment of the invention, 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.
In some embodiment of the invention, 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.
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 (19)
1. a kind of disk storage space management method, which comprises the steps of:
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, comprising: scanning
All disks for storing 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, the subregion for obtaining the disk array RAID member in the new insertion disk is general
Unique identifier UUID；According to the partition list and the subregion Universally Unique Identifier UUID, it is logical to find the subregion
With the subregion under the corresponding system current state of unique identifier UUID；In the storage equipment, new insertion is re-assemblied out
Disk array RAID in disk；Go out share directory according to the RAID device carry re-assemblied out；If the disk being newly inserted into is not
Metadata is carried, then by the subregion carry in partition list at share directory；
By the file system in new insertion disk on a storage device carry at share directory.
2. the method according to claim 1, wherein according to the self-contained metadata of disk, the new insertion of identification
The step of whether disk carries data specifically includes:
Judge whether disk carries metadata, if disk carries metadata, identifies the carrying data of disk；If disk does not carry
Metadata, but there is file system, then identify that disk carries data.
3. according to the method described in claim 2, it is characterized in that, the file system by new insertion disk is set in storage
Standby upper carry is specifically included at the step of share directory:
It, will be file system mounted at shared in the disk array RAID of new insertion disk if the disk being newly inserted into carries metadata
Catalogue；
If the disk being newly inserted into does not carry metadata but carries file system, by the file system mounted at shared of new insertion disk
Catalogue.
4. the method according to claim 1, wherein going out shared mesh according to the RAID device carry re-assemblied out
The step of record, specifically includes:
The metadata Universally Unique Identifier UUID for including in the metadata entrained by the disk and the system of storage equipment are general
When unique identifier UUID is consistent, the disk array RAID carry re-assemblied out at memory space, then from memory space
In recover share directory；
The metadata Universally Unique Identifier UUID for including in the metadata entrained by the disk and the system of storage equipment are general
When unique identifier UUID is inconsistent, the disk array RAID carry re-assemblied out at share directory.
5. the method according to claim 1, wherein when the creation memory space trigger condition for reaching setting or connecing
When receiving the memory space creation instruction of user's transmission, 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 partition；
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；
Metadata mark by the soft magnetism disk array RAID information together with blank disc is saved in the metadata of blank disc,
To update the metadata of blank disc；
By the meta-data preservation of updated blank disc in the system configuration file of storage equipment.
6. according to the method described in claim 5, it is characterized in that, as unit of newly created disk partition, creation floppy disc
The step of array RAID, specifically includes:
It constructs the first subregion on the blank disc chosen, then with the first subregion is that member constructs disk array RAID, as can
By memory space；And the second subregion is constructed on the blank disc chosen, then disk array is constructed for member with the second subregion
RAID, as unreliable memory space；
The reliable memory space storing data, the disk array RAID packet used in such a way that there is data redundancy ability
It includes: RAID1 or RAID5 or RAID6 or RAID10；The unreliable memory space does not have data redundancy ability, uses
Disk array RAID includes: RAID0 or linear formula storage LINEAR.
7. the method according to claim 1, wherein 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.
8. the method according to claim 1, wherein 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 on disk to be deleted
Disk array RAID removes the super block message of disk array RAID and its metadata information carried on disk to be deleted.
9. the method according to claim 1, wherein the disk array RAID member of new insertion disk itself is existed
After carry is at share directory in storage equipment, further includes:
Using the share directory, number is transmitted by disk interface between the disk that storage equipment has disk and is newly inserted into
According to.
10. a kind of disk storage space managing device characterized by 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, whether new insertion disk is identified
Carry data；
Data reservation module: for according to the instruction of user, retaining in new insertion disk when the disk being newly inserted into carries data
Data；The data reservation module specifically includes:
Partition list obtains module: for scanning all disks of storage equipment, obtaining the subregion column in system under current state
Table；
Universally Unique Identifier UUID acquiring unit: for when the disk being newly inserted into carries metadata, being then inserted into magnetic according to new
Metadata entrained by disk obtains the subregion Universally Unique Identifier of the disk array RAID member in the new insertion disk
UUID；And trigger subregion searching unit；
Subregion searching unit: described for finding according to the partition list and the subregion Universally Unique Identifier UUID
Subregion under the corresponding system current state of subregion Universally Unique Identifier UUID；And trigger RAID assembling unit；
RAID assembling unit: in the storage equipment, re-assemblying out the disk array RAID in new insertion disk；And
Trigger the first carry of share directory 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 the disk for being newly inserted into does not carry metadata, by the subregion in partition list
Carry is at share directory；
Catalogue carry module: for by the file system in new insertion disk on a storage device carry at share directory.
11. device according to claim 10, which is characterized in that 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 number
According to.
12. device according to claim 11, which is characterized in that the catalogue carry module specifically includes:
First share directory carry unit: for will newly be inserted into disk in the case where the disk being newly inserted into carries metadata
It is file system mounted at share directory in disk array RAID；
Second share directory carry unit: for the case where the disk being newly inserted into does not carry metadata but carries file system
Under, by the file system mounted at share directory of new insertion disk.
13. device according to claim 10, which is characterized in that the first carry of share directory unit specifically includes:
Memory space carry subelement: for working as the metadata Universally Unique Identifier for including in metadata entrained by disk
UUID with storage the system Universally Unique Identifier UUID of equipment it is consistent when, the disk array RAID carry re-assemblied out at
Then memory space triggers share directory and replys subelement；
Share directory restores subelement: for recovering share directory from memory space；
Share directory carry subelement: for working as the metadata Universally Unique Identifier for including in metadata entrained by disk
When the UUID and system Universally Unique Identifier UUID of storage equipment inconsistent, the disk array RAID carry re-assemblied out
At share directory.
14. device according to claim 10, which is characterized in that described device further include:
Blank disc division module: for that ought reach the creation memory space trigger condition of setting or receive depositing for user's transmission
When storing up space creation instruction, the blank disc of storage equipment is chosen, and subregion is carried out to the blank disc chosen, newly created
Disk partition；
Soft magnetism disk array RAID creation module: for creating soft magnetism disk array RAID as unit of newly created disk partition；
File system creation module: for creating file system on the soft magnetism disk array RAID；
Metadata updates module: it is saved in for the metadata mark by the soft magnetism disk array RAID information together with blank disc
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 file
In.
15. device according to claim 14, which is characterized in that the soft magnetism disk array RAID creation module is specifically wrapped
It 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 reliable memory sky
Between；
Unreliable subregion construction unit: for constructing the second subregion on the blank disc chosen；
Unreliable memory space construction unit: being that member constructs disk array RAID with the second subregion, empty as unreliable storage
Between；
The reliable memory space storing data, the disk array RAID packet used in such a way that there is data redundancy ability
It includes: RAID1 or RAID5 or RAID6 or RAID10；The unreliable memory space does not have data redundancy ability, uses
Disk array RAID includes: RAID0 or linear formula storage LINEAR.
16. device according to claim 10, which is characterized in that 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: the disk array RAID for removing each disk in disk array RAID is super
Grade block message and metadata；
Metadata removing module: for deleting the corresponding metadata of the memory space in system configuration file；
System banner removing module: it if other disk arrays are not present in equipment for storing, is deleted in system configuration file
System banner.
17. device according to claim 10, which is characterized in that 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: it is identified for the metadata mark and the metadata of storage equipment when disk to be deleted
When different, stop the disk array RAID on disk to be deleted；
Second disk array RAID information removes module: for removing the super block message of disk array RAID on disk to be deleted
And the metadata information of its carrying.
18. device according to claim 10, which is characterized in that described device further include: the share directory is used,
Storage equipment, which has, transmits data by disk interface between disk and the disk being newly inserted into.
19. a kind of storage equipment, which is characterized in that further include appointing in claim 10-18 including disk for storing data
Disk storage space managing device described in meaning one.
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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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| CN201510004657.XA CN105824572B (en) | 2015-01-05 | 2015-01-05 | A kind of disk storage space management method, device and storage equipment |
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| US10365837B2 (en) * | 2016-08-22 | 2019-07-30 | Western Digital Technologies, Inc. | Automatic RAID provisioning |
| CN107070972B (en) * | 2016-12-30 | 2020-02-07 | 中国银联股份有限公司 | Distributed file processing method and device |
| CN109144657B (en) * | 2017-06-14 | 2023-10-13 | 中兴通讯股份有限公司 | Method and device for sharing files across operating system platforms |
| CN107301106A (en) * | 2017-06-28 | 2017-10-27 | 郑州云海信息技术有限公司 | The restoration methods and device of a kind of RAID system failure |
| CN109976811B (en) * | 2017-12-27 | 2020-11-17 | 株洲中车时代电气股份有限公司 | Automatic mounting method of movable storage equipment and locomotive video monitoring system |
| CN110008064A (en) * | 2019-04-10 | 2019-07-12 | 苏州浪潮智能科技有限公司 | A kind of RAID restoration methods, device, equipment and medium |
| CN111475111A (en) * | 2020-04-01 | 2020-07-31 | 苏州浪潮智能科技有限公司 | RAID group pairing method and device for avoiding damage to hard disk data |
| CN112596678B (en) * | 2020-12-24 | 2024-01-16 | 得一微电子股份有限公司 | Storage device, firmware setting method thereof and repartitioning method thereof |
| CN113505111B (en) * | 2021-06-22 | 2024-03-12 | 新华三大数据技术有限公司 | Shared directory mounting method and distributed network additional storage system |
| CN115686932B (en) * | 2022-09-07 | 2023-06-23 | 安徽鼎甲计算机科技有限公司 | Backup set file recovery method and device and computer equipment |
| CN115951845B (en) * | 2023-03-14 | 2023-05-30 | 苏州浪潮智能科技有限公司 | Disk management method, device, equipment and storage medium |
| CN116257326B (en) * | 2023-05-11 | 2023-08-29 | 安徽海马云科技股份有限公司 | Method and device for managing storage space of container |
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