CN109471590A - A kind of mount point management method, device and memory node - Google Patents
A kind of mount point management method, device and memory node Download PDFInfo
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- CN109471590A CN109471590A CN201710806999.2A CN201710806999A CN109471590A CN 109471590 A CN109471590 A CN 109471590A CN 201710806999 A CN201710806999 A CN 201710806999A CN 109471590 A CN109471590 A CN 109471590A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0604—Improving or facilitating administration, e.g. storage management
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0629—Configuration or reconfiguration of storage systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/067—Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
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Abstract
A kind of mount point management method, device and memory node, disc identifier is generated for the data disks of carry on memory node, mount point where the disc identifier of the data disks is stored in the data disks respectively, and the disc identifier that the mount point described in the system disc recording of the memory node respectively saves;When carrying out abnormality detection to a mount point in the mount point, disc identifier is read to the mount point, it is such as different from the disc identifier that the mount point of the system disc recording saves to the disc identifier that the mount point is read, determine mount point exception.Present invention also provides corresponding device and memory node, the application can simply and reliably detect mount point exception.
Description
Technical field
The present invention relates to computer technologies, more particularly, to a kind of mount point management method, device and memory node.
Background technique
In the realization of storage system such as distributed memory system, it will usually the carry muti-piece great Rong on every memory node
The data storage disk (hereinafter referred to as " data disks ") of amount, each data disks are mounted in an individual catalogue, which is referred to as
For disk mount point (referred to as mount point).Memory node is responsible for managing the information of these data disks, including what is stored
The corresponding relationship of data disks where data and data.But in the case where certain software bug and human operational error, it may appear that hang
The loss (i.e. data disks are not come on carry) of loading point, the change of mount point, two pieces of mount points exchange, data disks are formatted
The abnormal conditions such as empty.Memory node needs to identify and finds these mistakes, otherwise can generate more serious error in data.
In the related art, memory node is the sequence number information based on data disks hardware to the detection of mount point exception,
Judge whether mount point is abnormal by the corresponding relationship of data and Disk Serial Number, this method is not simple enough and reliable, also
It needs the interface provided by operating system to obtain hardware information, has dependence to operating system, hardware vendor, it is not easy to across
Platform could be applied if it is in virtualized environment or after having replaced operating system, needing to carry out correspondingly modification.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of mount point management methods, comprising:
Disc identifier is generated for the data disks of carry on memory node, the disc identifier of the data disks is stored in the data
Disk respectively where mount point, and the disc identifier that the mount point described in the system disc recording of the memory node respectively saves;
When carrying out abnormality detection to a mount point in the mount point, disc identifier is read to the mount point, such as arriving should
The disc identifier that mount point is read is different from the disc identifier that the mount point of the system disc recording saves, and determines the mount point
It is abnormal.
In view of this, the embodiment of the invention also provides a kind of devices for detecting mount point exception, comprising:
Identifier generation module, for generating disc identifier for the data disks of carry on memory node;
Management module is identified, for the carry where the disc identifier of the data disks is stored in the data disks respectively
Point, and the disc identifier that the mount point described in the system disc recording of the memory node respectively saves;
Abnormality detection module when for carrying out abnormality detection to a mount point in the mount point, arrives the mount point
Read disc identifier, the disc identifier that the mount point of the disc identifier and the system disc recording that such as read to the mount point saves
Difference determines mount point exception.
In view of this, the embodiment of the invention also provides a kind of memory node, including memory, processor and it is stored in institute
The computer program that can be run on memory and on the processor is stated, the processor executes real when the computer program
Mount point management method described in the existing embodiment of the present invention.
In view of this, being stored thereon with computer the embodiment of the invention also provides a kind of computer readable storage medium
Program realizes mount point management method described in the embodiment of the present invention when computer program is executed by processor.
The embodiment of the present invention can simply and reliably detect the various exceptions of mount point.
Detailed description of the invention
Fig. 1 is the flow chart for the method that the embodiment of the present invention one detects mount point exception;
Fig. 2 is the module map for the device that the embodiment of the present invention two detects mount point exception.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
Embodiment one
The present embodiment is related to distributed memory system, and distributed memory system uses expansible system structure, using more
A memory node (such as storage server) shares storage load, further includes system on memory node other than being mounted with data disks
Disk, for installing, running operating system.Usual data disks are replaceable, and system disk can not be replaced, replacement operation system
It is overall to mean to have replaced entire node.The software of memory node itself is also installed and is operated on system disk, therefore system disk
Relative data disk is more structurally sound.
The present embodiment designs a kind of administrative mechanism to detect mount point exception, as shown in Figure 1, the present embodiment method includes:
Step 110, disc identifier is generated for the data disks of carry on memory node, the disc identifier of the data disks is stored in
The data disks respectively where mount point, and the disk that the mount point described in the system disc recording of the memory node respectively saves
Mark;
In the present embodiment, which can be generated in initial start-up for the data disks of carry on the memory node
Disc identifier, the data disks of carry can have one or more on memory node.And in the operational process after memory node starting,
Operation maintenance personnel also can be used administration order and the operation such as be increased the mount point of the memory node, modified and deleted, and increase newly
When mount point, memory node may be that the data disks of new carry generate disc identifier.In the present embodiment, disc identifier is held using software
Row as defined in algorithm and generate, for the application, disc identifier be distinguish memory node under data disks mark, therefore calculate
As long as method, which can guarantee, generates different disc identifiers for data disks different under same memory node.
In the present embodiment, the disc identifier of the generation uses the data format such as JSON independently of programming language
(JavaScript Object Notation:JS object tag) format indicates that JSON is a kind of data exchange lattice of lightweight
Formula.Using the text formatting for being totally independent of language.In other embodiments, disc identifier can use the format of any agreement,
It is not limited to JSON format.
In the present embodiment, memory node by the disc identifier of the data disks be stored in the data disks respectively where carry
Point, can be and saved with document form.And the disc identifier that the mount point respectively saves can also be protected with a unified file
There are under the specified directory of system disk.
Step 120, when carrying out abnormality detection to a mount point in the mount point, disk mark is read to the mount point
Know, the disc identifier as read to the mount point is different from the disc identifier that the mount point of the system disc recording saves, really
The fixed mount point is abnormal.
In the present embodiment, when there are multiple mount points in the memory node, the abnormality detection of each mount point is such as walked
Described in rapid 120.The abnormality detection of mount point can periodically be carried out during memory node is run, it can also be by O&M people
Member's triggering, the application, which does not do this, to be limited to.The processing of step 120 can be executed by memory node process, be saved as storage
A part of point process.
In the present embodiment, the disk of the mount point preservation of the disc identifier and system disc recording that are such as read to the mount point
Mark is different, illustrate the data disks of the mount point carry be not before data disks, can determine mount point exception.There are also one
Kind situation is that memory node reads the disc identifier saved less than the mount point, this may be because of mount point loss, data disks quilt
Caused by formatting such as empties at the reasons, mount point exception can also be determined at this time.
In the present embodiment, if memory node is run, operation maintenance personnel is using administration order to one of the memory node
Mount point has carried out delete operation, then the memory node also corresponding deletion system disc recording the mount point save disk mark
Know.If carry out the mount point is modification operation, can be regarded as deleting and increase by two operations corresponding to carry out
Processing.
The present embodiment additionally provides a kind of carry point management apparatus, as shown in Figure 2, comprising:
Identifier generation module 10, for generating disc identifier for the data disks of carry on memory node;
Management module 20 is identified, for the carry where the disc identifier of the data disks is stored in the data disks respectively
Point, and the disc identifier that the mount point described in the system disc recording of the memory node respectively saves;
Abnormality detection module 30 when for carrying out abnormality detection to a mount point in the mount point, arrives the carry
Point reads disc identifier, the disk mark that the mount point of the disc identifier and the system disc recording that such as read to the mount point saves
Know difference, determines mount point exception.
In the present embodiment, the abnormality detection module is also used to carry out a mount point in the mount point abnormal inspection
It when survey, such as reads to the mount point less than disc identifier, it is determined that the mount point is abnormal.
In the present embodiment, the disc identifier that the identifier generation module generates uses the data format table independently of programming language
Show.
In the present embodiment, the identifier generation module is that the data disks of carry on memory node generate disc identifier, comprising:
When the memory node initial start-up, disc identifier is generated using the data disks that software is carry on the memory node;And/or at this
When memory node is run, disc identifier is generated using the data disks that software is new carry on the memory node.
In the present embodiment, the mark management module is also used to after a mount point is deleted, and deletes the system disk
The disc identifier that the mount point of upper record saves.
The present embodiment additionally provides a kind of memory node, including memory, processor and is stored on the memory simultaneously
The computer program that can be run on the processor, the processor perform the steps of when executing the computer program
Disc identifier is generated for the data disks of carry on memory node, the disc identifier of the data disks is stored in the data
Disk respectively where mount point, and the disc identifier that the mount point described in the system disc recording of the memory node respectively saves;
When carrying out abnormality detection to a mount point in the mount point, disc identifier is read to the mount point, such as arriving should
The disc identifier that mount point is read is different from the disc identifier that the mount point of the system disc recording saves, and determines the mount point
It is abnormal.
In the present embodiment, the data disks for carry on memory node generate disc identifier, comprising: the memory node is first
When secondary starting, disc identifier is generated using the data disks that software is carry on the memory node;And/or the memory node is being run
When, disc identifier is generated using the data disks that software is the new carry of the memory node.
In the present embodiment, the processor is also performed the steps of when executing the computer program to the mount point
In mount point when carrying out abnormality detection, such as read to the mount point less than disc identifier, it is determined that the mount point is abnormal.
In the present embodiment, any place of the present embodiment method is may be implemented in the processor when executing the computer program
Reason, no longer repeats one by one here.
The present embodiment additionally provides a kind of computer readable storage medium, is stored thereon with computer program, the calculating
Machine program performs the steps of when being executed by processor
Disc identifier is generated for the data disks of carry on memory node, the disc identifier of the data disks is stored in the data
Disk respectively where mount point, and the disc identifier that the mount point described in the system disc recording of the memory node respectively saves;
When carrying out abnormality detection to a mount point in the mount point, disc identifier is read to the mount point, such as arriving should
The disc identifier that mount point is read is different from the disc identifier that the mount point of the system disc recording saves, and determines the mount point
It is abnormal.
In the present embodiment, the data disks for carry on memory node generate disc identifier, comprising: the memory node is first
When secondary starting, disc identifier is generated using the data disks that software is carry on the memory node;And/or the memory node is being run
When, disc identifier is generated using the data disks that software is the new carry of the memory node.
In the present embodiment, also perform the steps of when the computer program is executed by processor in the mount point
Mount point when carrying out abnormality detection, such as read to the mount point less than disc identifier, it is determined that the mount point is abnormal.
Any processing in the present embodiment method may be implemented in the computer program when being executed by processor, here no longer
It repeats one by one.
Detection of the present embodiment what is involved is a memory node of distributed memory system to mount point exception, but this Shen
Distributed memory system please be not limited to, as long as including any system for being mounted with data disks on memory node and memory node
The method, apparatus and memory node, storage medium of the above embodiment of the present invention description can be used in system.
The above scheme of the embodiment of the present invention can simply and reliably detect mount point exception, and due to raw using software
At disc identifier, so interface and disk hardware characteristic independent of operating system offer, are easy cross-platform realization.
Embodiment two
The present embodiment provides a specific examples, are illustrated to the method in embodiment one.
The memory node of the present embodiment is when initial start-up, in such a way that software calculates, to every block number of carry
It is handled according to disk.
The present embodiment includes: to the processing of every piece of data disks of carry
Step 1 is that the data disks generate disc identifier such as Universally Unique Identifier (Universally using software
Unique Identifier, UUID).UUID is that do not have a duplicate ID to go here and there in same memory node, in one example,
By the IP address of the storage server of 32 integers, the process number of 16 integers, the thread number of 16 integers, in conjunction in process
Counter, timestamp and random number are merged into 128 integers, using 128 integers as the disk mark of a data disks
Know.
Generate disc identifier method have very much, digit and comprising information can change.For example, it is also possible to will storage
For node identification information plus sequence number as disc identifier, the application is not limited to any specific algorithm for generating disc identifier.
Step 2, the mount point UUID string of the data disks being stored in where the data disks, is such as written the extension for UUID
In the first file appointed under loading point root or other specified directories, which is stored on the data disks.Together
When, on system disk, the UUID of the mount point and the data disks is bound, the second file appointed under specified path is written
In.For system disk, the UUID that all mount points of the memory node save will record.
In one example, the first filename of the preservation data disks UUID of the root write-in of mount point " disk1 "
For DiskUUIDInfo, content uses json format, as follows:
The UUID of above-mentioned generation is 128, is expressed as the form of two 64 integers, and uuidHigh indicates high-order,
UuidLow indicates low level.
In one example, the second text for the UUID for thering are all mount points to save in the record of system disk specified path write-in
The entitled DiskManifestInfo of part, format uses json format, as follows:
" disk1 " therein, " disk2 " ... ..., " disk9 " indicate 9 mount points of the memory node, are identified as "
The disc identifier that the mount point of disk1 " saves is 74175180778632927103, and so on.
Step 3, after completing the above initial work, memory node periodically arrives each mount point and reads the first text
UUID in part can specifically be realized by the background scanning thread started in memory node process, here with carry
For point " disk1 ".If to mount point " disk1 " read less than in the first file UUID (such as because the mount point lose, this
Data disks are emptied, file corruption etc.), it is determined that mount point " disk1 " occurs abnormal.If the UUID and system disk that read
The UUID that the mount point " disk1 " recorded in upper second file saves is inconsistent, and it is abnormal also to determine that mount point " disk1 " occurs.
Thus the mount point that can detecte out of the present embodiment covers that data disks are unloaded, data disks are replaced, mount point mistake extremely
Etc. the scene of all kinds of mount point exceptions.It, can be by the state mark of the data disks of carry thereon after determining mount point " disk1 " exception
It is denoted as mistake, and starts subsequent disk error process flow.
Because each operating system platform is different to the acquisition modes of hardware information, the present embodiment utilizes the Software Create side uuid
Formula, file content is json format, therefore is easier to realize cross-platform transplanting.
It will appreciated by the skilled person that whole or certain steps, system, dress in method disclosed hereinabove
Functional module/unit in setting may be implemented as software, firmware, hardware and its combination appropriate.In hardware embodiment,
Division between the functional module/unit referred in the above description not necessarily corresponds to the division of physical assemblies;For example, one
Physical assemblies can have multiple functions or a function or step and can be executed by several physical assemblies cooperations.Certain objects
Reason component or all physical assemblies may be implemented as by processor, such as central processing unit, digital signal processor or micro process
The software that device executes, is perhaps implemented as hardware or is implemented as integrated circuit, such as specific integrated circuit.Such software
Can be distributed on a computer-readable medium, computer-readable medium may include computer storage medium (or non-transitory be situated between
Matter) and communication media (or fugitive medium).As known to a person of ordinary skill in the art, term computer storage medium includes
In any method or skill for storing information (such as computer readable instructions, data structure, program module or other data)
The volatile and non-volatile implemented in art, removable and nonremovable medium.Computer storage medium includes but is not limited to
RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storages, magnetic
Box, tape, disk storage or other magnetic memory apparatus or it can be used for storing desired information and can be visited by computer
Any other medium asked.In addition, known to a person of ordinary skill in the art be, communication media generally comprises computer-readable
Other numbers in the modulated data signal of instruction, data structure, program module or such as carrier wave or other transmission mechanisms etc
According to, and may include any information delivery media.
Claims (12)
1. a kind of mount point management method, comprising:
Disc identifier is generated for the data disks of carry on memory node, it is each that the disc identifier of the data disks is stored in the data disks
Mount point from place, and the disc identifier that the mount point described in the system disc recording of the memory node respectively saves;
When being carried out abnormality detection to a mount point in the mount point, disc identifier is read to the mount point, such as arrives the carry
The disc identifier that point is read is different from the disc identifier that the mount point of the system disc recording saves, and determines that the mount point is different
Often.
2. the method as described in claim 1, it is characterised in that:
The method also includes: when being carried out abnormality detection to a mount point in the mount point, such as read to the mount point
Less than disc identifier, it is determined that the mount point is abnormal.
3. the method as described in claim 1, it is characterised in that:
The disc identifier uses the data format independently of programming language to indicate.
4. the method as claimed in claim 1 or 2 or 3, it is characterised in that:
The data disks for carry on memory node generate disc identifier, comprising: for the memory node in initial start-up, utilization is soft
Part is that the data disks of carry on the memory node generate disc identifier;And/or the memory node is at runtime, being using software should
The data disks of the new carry of memory node generate disc identifier.
5. a kind of carry point management apparatus characterized by comprising
Identifier generation module, for generating disc identifier for the data disks of carry on memory node;
Management module is identified, for the mount point where the disc identifier of the data disks is stored in the data disks respectively, and
The disc identifier that the mount point described in the system disc recording of the memory node respectively saves;
Abnormality detection module when for carrying out abnormality detection to a mount point in the mount point, is read to the mount point
Disc identifier, the disc identifier that the mount point of the disc identifier and the system disc recording that such as read to the mount point saves is not
Together, mount point exception is determined.
6. device as claimed in claim 5, it is characterised in that:
When the abnormality detection module is also used to carry out abnormality detection a mount point in the mount point, the carry is such as arrived
Point is read less than disc identifier, it is determined that the mount point is abnormal.
7. such as device described in claim 5 or 6, it is characterised in that:
The identifier generation module is that the data disks of carry on memory node generate disc identifier, comprising: first in the memory node
When starting, disc identifier is generated using the data disks that software is carry on the memory node;And/or in memory node operation,
Disc identifier is generated using the data disks that software is new carry on the memory node.
8. a kind of memory node, including memory, processor and it is stored on the memory and can transports on the processor
Capable computer program, which is characterized in that the processor performs the steps of when executing the computer program
Disc identifier is generated for the data disks of carry on memory node, it is each that the disc identifier of the data disks is stored in the data disks
Mount point from place, and the disc identifier that the mount point described in the system disc recording of the memory node respectively saves;
When being carried out abnormality detection to a mount point in the mount point, disc identifier is read to the mount point, such as arrives the carry
The disc identifier that point is read is different from the disc identifier that the mount point of the system disc recording saves, and determines that the mount point is different
Often.
9. memory node as claimed in claim 8, it is characterised in that:
The data disks for carry on memory node generate disc identifier, comprising: for the memory node in initial start-up, utilization is soft
Part is that the data disks of carry on the memory node generate disc identifier;And/or the memory node is at runtime, being using software should
The data disks of the new carry of memory node generate disc identifier.
10. memory node as claimed in claim 8 or 9, it is characterised in that:
It is also performed the steps of when the processor executes the computer program and a carry in the mount point is clicked through
It when row abnormality detection, such as reads to the mount point less than disc identifier, it is determined that the mount point is abnormal.
11. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
It is performed the steps of when being executed by processor
Disc identifier is generated for the data disks of carry on memory node, it is each that the disc identifier of the data disks is stored in the data disks
Mount point from place, and the disc identifier that the mount point described in the system disc recording of the memory node respectively saves;
When being carried out abnormality detection to a mount point in the mount point, disc identifier is read to the mount point, such as arrives the carry
The disc identifier that point is read is different from the disc identifier that the mount point of the system disc recording saves, and determines that the mount point is different
Often.
12. memory node as claimed in claim 11, it is characterised in that:
The data disks for carry on memory node generate disc identifier, comprising: for the memory node in initial start-up, utilization is soft
Part is that the data disks of carry on the memory node generate disc identifier;And/or the memory node is at runtime, being using software should
The data disks of the new carry of memory node generate disc identifier.
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