CN106776381A - A kind of storage system power-off protection method and system - Google Patents
A kind of storage system power-off protection method and system Download PDFInfo
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- CN106776381A CN106776381A CN201611209019.2A CN201611209019A CN106776381A CN 106776381 A CN106776381 A CN 106776381A CN 201611209019 A CN201611209019 A CN 201611209019A CN 106776381 A CN106776381 A CN 106776381A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/16—Protection against loss of memory contents
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
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Abstract
The invention discloses a kind of storage system power-off protection method and system, method includes：When detecting storage system and power down occur, power down notification is sent to the functional module in internal storage location, to control functional module business out of service, and sort out to need data to be saved；Being obtained from each described functional module of the internal storage location needs the data item of the data unit information and data cell for preserving data; preserved; and power down protection overall information is generated, the power down protection overall information record has preserved the data unit information and save location of data.Storage system power-off protection method of the present invention and system, preserve the data in buffer unit when power down occurs in storage system, by data recovery when enabling system to re-power, so as to ensure the consistent of data.
Description
Technical field
The present invention relates to memory system technologies field, more particularly to a kind of storage system power-off protection method and system.
Background technology
At present, under the background in big data epoch, the treating capacity of data is increasing in storage system, therefore is to storage
The quick obtaining of data and storage it is also proposed requirements at the higher level in system.
Within the storage system, the data processing speed of processor is the index times of rear end disk processing speed, wherein rear end
Disk is always the critical path for influenceing storage system I/O data access efficiency, and the access speed for improving rear end disk I/O data is carved
Do not allow to delay.In existing storage system architecture mode, by using a part of space in Installed System Memory as from disk read-write number
According to spatial cache, to improve the access speed of rear end disk I/O data.However, the program there are the following problems：When storage is
When power-down conditions occurs in system, the data in caching are not issued to rear end disk also, and data may lose in being cached after power down,
Data can be caused inconsistent.
The content of the invention
In consideration of it, the present invention provides a kind of storage system power-off protection method and system, when there is power down in storage system
By in buffer unit data preserve, enable system when re-powering by data recovery, it is ensured that data it is consistent.
To achieve the above object, the present invention provides following technical scheme：
A kind of storage system power-off protection method, including：
When detecting storage system and power down occur, power down notification is sent to the functional module in internal storage location, to control
The functional module business out of service, and sort out and need data to be saved；
The data unit information and number for needing to preserve data are obtained from each described functional module of the internal storage location
According to the data item of unit, preserved, and generated power down protection overall information, the power down protection overall information record has been preserved
The data unit information and save location of data.
Alternatively, the data cell for needing to preserve data is obtained in each described functional module from the internal storage location
The data item of information and data cell, is preserved, and is generated power down protection overall information and included：
Initialization power down protection overall information；
With the presence or absence of data to be saved is needed in each described functional module of internal storage location described in cyclic query, if the work(
Can module exist need data to be saved, then from the functional module obtain need preserve data data unit information and
The data item of data cell, is preserved, and updates the power down protection overall information.
Alternatively, also include：
After electricity in the storage system, inquiry is with the presence or absence of the data for needing to recover；
If so, then obtaining power down protection overall information, parsed from the power down protection overall information and preserved data
Data unit information and corresponding save location, obtain function belonging to data cell from data unit information parsing
Module, and send the data unit information to the functional module, control the functional module to perform data recovery.
Alternatively, it is described parsed from the power down protection overall information data unit information that has preserved data and
Corresponding save location includes：
Whether the check value for verifying the power down protection overall information is correct, if so, then totally believing from the power down protection
The data unit information and corresponding save location for having preserved data are parsed in breath.
Alternatively, also include：After the data for having preserved all successfully recoveries are inquired, the data for having preserved are emptied.
A kind of storage system power down protection system, including：
Detection of power loss module, for when detecting storage system and power down occur, being sent out to the functional module in internal storage location
Power down notification is sent, to control functional module business out of service, and sort out to need data to be saved；
Data storage module, for obtaining the number for needing to preserve data from each described functional module of the internal storage location
According to unit information and the data item of data cell, preserved, and generated power down protection overall information, the power down protection is total
Body information record has preserved the data unit information and save location of data.
Alternatively, the data storage module includes：
Information updating submodule, for initializing power down protection overall information, and needs being obtained from the functional module
The data unit information of data and the data item of data cell are preserved, after being preserved, the power down protection totality is updated
Information；
Data preserve submodule, for what is preserved with the presence or absence of needs in the functional module of internal storage location described in cyclic query
Data, if the functional module is present needs data to be saved, obtain the number for needing to preserve data from the functional module
According to unit information and the data item of data cell, preserved.
Alternatively, also include：
Enquiry module, for after electric in the storage system, inquiry to be with the presence or absence of the data for needing to recover；
Data recovery module, if in the presence of need recover data, obtain power down protection overall information, from it is described fall
The data unit information and corresponding save location for having preserved data are parsed in electric protection overall information, from the data sheet
Metamessage parsing obtains the functional module belonging to data cell, and sends the data unit information to the functional module,
The functional module is controlled to perform data recovery.
Alternatively, the data recovery module is used to be parsed from the power down protection overall information to have preserved data
Data unit information and corresponding save location, including：
Whether the data recovery module is correct specifically for verifying the check value of the power down protection overall information, if
It is that the data unit information and corresponding preservation position for having preserved data are then parsed from the power down protection overall information
Put.
Alternatively, the enquiry module is additionally operable to after inquiring the data for having preserved and being all successfully recovered, and control is clear
The data that sky has been preserved.
As shown from the above technical solution, storage system power-off protection method provided by the present invention and system, are detecting
When power down occurs in storage system, power down notification is sent to the functional module in internal storage location, it is out of service with control function module
Business, and sort out and need data to be saved；The data sheet for needing to preserve data is obtained from each functional module of internal storage location
The data item of metamessage and data cell, is preserved, and accordingly generates power down protection overall information, and record has preserved data
Data unit information and save location.When system is re-powered, can be according to the data unit information and data for preserving
Item carries out data recovery.
Storage system power-off protection method of the present invention and system, when power down occurs in storage system by the number in buffer unit
According to preservation, by data recovery when enabling system to re-power, so as to ensure the consistent of data.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart of storage system power-off protection method provided in an embodiment of the present invention；
Fig. 2 is the flow of upper electricity restoration methods in a kind of storage system power-off protection method provided in an embodiment of the present invention
Figure；
Fig. 3 is a kind of schematic diagram of storage system power down protection system provided in an embodiment of the present invention；
A kind of schematic diagram of storage system power down protection system that Fig. 4 is provided for further embodiment of this invention.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the present invention, below in conjunction with of the invention real
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described implementation
Example is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to protection of the present invention
Scope.
The embodiment of the present invention provides a kind of storage system power-off protection method, including：
When detecting storage system and power down occur, power down notification is sent to the functional module in internal storage location, to control
The functional module business out of service, and sort out and need data to be saved；
The data unit information and number for needing to preserve data are obtained from each described functional module of the internal storage location
According to the data item of unit, preserved, and generated power down protection overall information, the power down protection overall information record has been preserved
The data unit information and save location of data.
As can be seen that the present embodiment storage system power-off protection method, when detecting storage system and power down occur, inwardly
Functional module in memory cell sends power down notification, with control function module business out of service, and sorts out what needs were preserved
Data；Being obtained from each functional module of internal storage location needs the data of the data unit information and data cell for preserving data
, preserved, and power down protection overall information is accordingly generated, record has preserved the data unit information of data and has preserved position
Put.When system is re-powered, data can be recovered according to the data unit information and data item that preserve.Therefore the present embodiment is deposited
Storage system power-off protection method, preserves the data in buffer unit when power down occurs in storage system, re-powers system
When can be by data recovery, so as to ensure the consistent of data.
The present embodiment storage system power-off protection method is described in detail with reference to specific embodiment.Refer to
Fig. 1, the present embodiment storage system power-off protection method includes step：
S10：When detecting storage system and power down occur, power down notification is sent to the functional module in internal storage location, with
Functional module business out of service is controlled, and is sorted out and is needed data to be saved.
When detecting storage system and powered-off fault occur, send to each functional module in storage system internal storage location
Electricity notifies that each functional module performs necessary preparation, business out of service, including stop when power down notification is received
Front-end business and the access of rear end disk, and sort out and need data to be saved.Wherein, described internal storage location includes caching
Area.
Preferably, functional module described in the present embodiment is default protected functional module, i.e., power down occurs in system
During situation, to needing protected function module to carry out preservation data.
S11：From each described functional module of the internal storage location obtain need preserve data data unit information with
And the data item of data cell, preserved, and power down protection overall information is generated, the power down protection overall information record is
Preserve the data unit information and save location of data.
When detecting storage system and powered-off fault occur, and preparation is completed in each functional module, sort out needs
After the data of preservation, turn-on data preserves flow.
Data preserve flow and specifically include in the present embodiment：First, power down protection overall information is initialized, and is preserved；So
Afterwards, with the presence or absence of data to be saved is needed in each described functional module of internal storage location described in cyclic query, if functional module is deposited
Data to be saved is being needed, then being obtained from the functional module needs the data unit information and data cell that preserve data
Data item, preserved, and update the power down protection overall information.It refers to be protected in power down to update power down protection overall information
Recorded in shield overall information and preserve the corresponding data unit information of data and save location.
Wherein, after the completion of the data item of each data cell is all preserved, note is updated in power down protection overall information
Record its data unit information.After the completion of all data unit informations and data item are all preserved, power down protection totality is updated
Information.
The present embodiment storage system power-off protection method, when powered-off fault occurs in storage system, will need in internal storage location
Data to be saved is preserved, and preserves corresponding data unit information and data item, enables storage system when re-powering
It is enough to carry out data recovery according to the data for preserving, so as to can ensure that data are complete in internal storage location, can improve memory system data
Reliability, business datum causes data inconsistent in being unlikely to be lost because of system power failure caching.
In another specific embodiment of the present embodiment, on the basis of above-described embodiment content, the storage system is fallen
Electric protection method also includes that upper electricity recovers flow, refer to Fig. 2, specifically includes step：
S20：After electricity in the storage system, inquiry is with the presence or absence of the data for needing to recover.
Re-powered in storage system, when restarting operation, needed by which controller according to various condition comprehensive descisions extensive
The data of multiple which storage pool, it would be desirable to which the storage pool and functional module for recovering data are started up in current controller.
S21：If so, then obtaining power down protection overall information, parsed from the power down protection overall information and preserved
The data unit information of data and corresponding save location, obtain belonging to data cell from data unit information parsing
Functional module, and send the data unit information to the functional module, control the functional module to perform data recovery.
If inquiring system has the data for needing to recover, power down protection overall information is obtained, from power down protection totality
The data unit information and corresponding save location for having preserved data are parsed in information.
Wherein, parsed from the power down protection overall information and preserved the data unit information of data and corresponding
Save location includes：Whether the check value for verifying the power down protection overall information is correct, if so, then total from the power down protection
The data unit information and corresponding save location for having preserved data are parsed in body information.
After power down protection overall information is got, whether the check value for verifying the power down protection overall information is correct,
Exemplary, CRC (Cyclic Redundancy Check, CRC) can be set in power down protection information,
Redundancy debugging verification is circulated to power down protection information first after getting power down protection information.If check errors, show this
Do not exist valid data in the corresponding preservation data of power down protection overall information, then stop.If verification is correct, from power down protection
The data unit information and corresponding save location for having preserved data are parsed in overall information, and carries out follow-up process.
It is specific in this step, parse first data unit information and right first from power down protection overall information
The save location answered, the functional module belonging to data cell is parsed from the data unit information for obtaining, by data unit information
Send the functional module to, the functional module reads data item from save location, performs data recovery, and return to execution
As a result.If implementing result shows to be successfully recovered, carry out recovering next data item；Circulation performs above-mentioned steps and enters to preserving data
Row recovers.After the data for having preserved all successfully recoveries are inquired, the data for having preserved are emptied.
The present embodiment storage system power-off protection method, when powered-off fault occurs in storage system, will need in internal storage location
Data to be saved is preserved, and preserves corresponding data unit information and data item；Can when storage system is re-powered
To preserve data carry out data recovery, it is ensured that data in EMS memory it is complete, the reliability of memory system data can be improved, no
As for lost because of system power failure caching in business datum, cause data inconsistent.Before making system be not required to support adapter power down
Internal storage data.
Accordingly, the embodiment of the present invention also provides a kind of storage system power down protection system, including：
Detection of power loss module, for when detecting storage system and power down occur, being sent out to the functional module in internal storage location
Power down notification is sent, to control functional module business out of service, and sort out to need data to be saved；
Data storage module, for obtaining the number for needing to preserve data from each described functional module of the internal storage location
According to unit information and the data item of data cell, preserved, and generated power down protection overall information, the power down protection is total
Body information record has preserved the data unit information and save location of data.
As can be seen that the present embodiment storage system power down protection system includes detection of power loss module and data storage module,
When detecting storage system and power down occur, power down notification is sent to the functional module in internal storage location, with control function module
Business out of service, and sort out and need data to be saved；Being obtained from each functional module of internal storage location needs to preserve data
Data unit information and data cell data item, preserved, and accordingly generate power down protection overall information, record
Preserve the data unit information and save location of data.When system is re-powered, can be according to the data cell letter for preserving
Breath and data item recover data.Therefore the present embodiment storage system power down protection system, will delay when power down occurs in storage system
Data in memory cell are preserved, by data recovery when enabling system to re-power, so as to ensure the consistent of data.
The present embodiment storage system power down protection system is described in detail with reference to specific embodiment.This implementation
Example storage system power down protection system includes：
Detection of power loss module 30, for when detecting storage system and power down occur, to the functional module in internal storage location
Power down notification is sent, to control functional module business out of service, and sort out to need data to be saved.
Specifically, can be examined using PLD (Complex Programmable Logic Device, CPLD)
Whether examining system there is powered-off fault, and when system occurs powered-off fault, PLD is drawn by dragging down the GPIO of CPU
Pin informs powered-off fault event.Detection of power loss module 30 will capture GPIO pin generation from 1 to 0 saltus step, show system
Generation powered-off fault.
Detection of power loss module 30 is sent out when detecting storage system and powered-off fault occur to the functional module in internal storage location
Power down notification is sent, functional module performs necessary preparation, business out of service, including stop front end according to power down notification
The access of business and rear end disk, and sort out and need data to be saved.
Specifically, the detection of power loss function of detection of power loss module 30 can be carried out by user space processes control, can be by matching somebody with somebody
Put interface and transmit power down notification to the functional module in system memory units.
After detection of power loss module 30 sends power down notification to each functional module in internal storage location, and notify that data preserve mould
The log-on data of block 31 preserves flow.
Data storage module 31, needs to preserve data for being obtained from each described functional module of the internal storage location
The data item of data unit information and data cell, is preserved, and generates power down protection overall information, the power down protection
Overall information record has preserved the data unit information and save location of data.
In the present embodiment, the data storage module 31 includes：
Information updating submodule, for initializing power down protection overall information, and needs being obtained from the functional module
The data unit information of data and the data item of data cell are preserved, after being preserved, the power down protection totality is updated
Information；
Data preserve submodule, for what is preserved with the presence or absence of needs in the functional module of internal storage location described in cyclic query
Data, if the functional module is present needs data to be saved, obtain the number for needing to preserve data from the functional module
According to unit information and the data item of data cell, preserved.
When the turn-on data of data storage module 31 preserves flow, information updating submodule initializes power down protection totality first
Information, data preserve the number preserved with the presence or absence of needs in each described functional module of internal storage location described in submodule cyclic query
According to if functional module is present needs data to be saved, being obtained from the functional module needs the data cell of preservation data
The data item of information and data cell, is preserved, while information updating submodule updates the power down protection overall information,
Update power down protection overall information refer to recorded in power down protection overall information preserve the corresponding data unit information of data with
And save location.
In the present embodiment, data storage module 31 includes memory cell, and the data cell letter of data is preserved the need for acquisition
Breath, data item and power down protection overall information are preserved in the memory unit.The memory cell can use solid state hard disc.
In the present embodiment another specific embodiment of storage system power down protection system, in the base of above-described embodiment content
On plinth, the storage system power down protection system also has the automatic function of recovering data of upper electricity, refer to Fig. 4, the system
Also include：
Enquiry module 32, for after electric in the storage system, inquiry to be with the presence or absence of the data for needing to recover.
When storage system is re-powered and restarts operation, which enquiry module 32 controlled according to various condition comprehensive descisions by
Device needs to recover the data of which storage pool, it would be desirable to which the storage pool and functional module for recovering data start in current controller
Come.
Data recovery module 33, if in the presence of the data for needing to recover, power down protection overall information being obtained, from described
The data unit information and corresponding save location for having preserved data are parsed in power down protection overall information, from the data
Unit information parsing obtains the functional module belonging to data cell, and sends the data unit information to the function mould
Block, controls the functional module to perform data recovery.
Wherein preferred, the data recovery module 33 is used to be parsed from the power down protection overall information to have preserved
The data unit information of data and corresponding save location, including：
Whether the data recovery module 33 is correct specifically for verifying the check value of the power down protection overall information, if
It is that the data unit information and corresponding preservation position for having preserved data are then parsed from the power down protection overall information
Put.
If inquiring system has the data for needing to recover, data recovery module gets power down guarantor from memory cell
After shield overall information, whether the check value for verifying the power down protection overall information first is correct, exemplary, and power down can be protected
Shield information is circulated redundancy debugging verification.If check errors, show the power down protection overall information it is corresponding preserve data in
In the absence of valid data, then stop.If verification is correct, the data sheet for having preserved data is parsed from power down protection overall information
Metamessage and corresponding save location, and carry out follow-up process.
Specifically, the data recovery module parses first data cell letter first from power down protection overall information
Breath and corresponding save location, parse the functional module belonging to data cell, by data sheet from the data unit information for obtaining
Metamessage sends the functional module to, and the functional module reads data item from save location, performs data recovery, and return
Return implementing result.If implementing result shows to be successfully recovered, carry out recovering next data item；Circulation performs above-mentioned steps to preserving
Data are recovered.
The enquiry module 32 is additionally operable to after inquiring the data for having preserved and being all successfully recovered, and control is emptied have been protected
The data deposited.
In the present embodiment, when power down occurs in storage system, system power supply can be switched to stand-by power supply, by stand-by power supply
It is that storage system and the power down protection system are powered, to carry out power down protection flow.
The present embodiment storage system power down protection system, when powered-off fault occurs in storage system, will need in internal storage location
Data to be saved is preserved, and preserves corresponding data unit information and data item；Can when storage system is re-powered
Data to preserving carry out data recovery, it is ensured that data is complete in system memory units, can improve memory system data
Reliability, is unlikely to lose business datum in caching because of system power failure, causes data inconsistent.
A kind of storage system power-off protection method provided by the present invention and system are described in detail above.Herein
In apply specific case principle of the invention and implementation method be set forth, the explanation of above example is only intended to side
Assistant solves the method for the present invention and its core concept.It should be pointed out that for those skilled in the art, not
On the premise of departing from the principle of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into
In the protection domain of the claims in the present invention.
Claims (10)
1. a kind of storage system power-off protection method, it is characterised in that including：
When detecting storage system and power down occur, power down notification is sent to the functional module in internal storage location, it is described to control
Functional module business out of service, and sort out and need data to be saved；
The data unit information and data sheet for needing to preserve data are obtained from each described functional module of the internal storage location
The data item of unit, is preserved, and generates power down protection overall information, and the power down protection overall information record has preserved data
Data unit information and save location.
2. storage system power-off protection method according to claim 1, it is characterised in that described from the internal storage location
Being obtained in each functional module needs the data item of the data unit information and data cell for preserving data, is preserved,
And generate power down protection overall information and include：
Initialization power down protection overall information；
With the presence or absence of data to be saved is needed in each described functional module of internal storage location described in cyclic query, if the function mould
Block is present needs data to be saved, then being obtained from the functional module needs the data unit information and data that preserve data
The data item of unit, is preserved, and updates the power down protection overall information.
3. storage system power-off protection method according to claim 1, it is characterised in that also include：
After electricity in the storage system, inquiry is with the presence or absence of the data for needing to recover；
If so, then obtaining power down protection overall information, the number for having preserved data is parsed from the power down protection overall information
According to unit information and corresponding save location, the function mould belonging to data cell is obtained from data unit information parsing
Block, and send the data unit information to the functional module, control the functional module to perform data recovery.
4. storage system power-off protection method according to claim 3, it is characterised in that described total from the power down protection
The data unit information that has preserved data and corresponding save location are parsed in body information to be included：
Whether the check value for verifying the power down protection overall information is correct, if so, then from the power down protection overall information
Parse the data unit information and corresponding save location for having preserved data.
5. storage system power-off protection method according to claim 3, it is characterised in that also include：Protected when inquiring
After the data deposited all successfully are recovered, the data for having preserved are emptied.
6. a kind of storage system power down protection system, it is characterised in that including：
Detection of power loss module, for when detecting storage system and power down occur, sending to the functional module in internal storage location
Electricity is notified, to control functional module business out of service, and sort out to need data to be saved；
Data storage module, for obtaining the data sheet for needing to preserve data from each described functional module of the internal storage location
The data item of metamessage and data cell, is preserved, and generates power down protection overall information, and the power down protection is totally believed
Breath record has preserved the data unit information and save location of data.
7. storage system power down protection system according to claim 6, it is characterised in that the data storage module bag
Include：
Information updating submodule, for initializing power down protection overall information, and needs to protect being obtained from the functional module
The data unit information of deposit data and the data item of data cell, after being preserved, update the power down protection overall information；
Data preserve submodule, for the number preserved with the presence or absence of needs in the functional module of internal storage location described in cyclic query
According to if the functional module is present needs data to be saved, being obtained from the functional module needs the data of preservation data
The data item of unit information and data cell, is preserved.
8. storage system power down protection system according to claim 6, it is characterised in that also include：
Enquiry module, for after electric in the storage system, inquiry to be with the presence or absence of the data for needing to recover；
Data recovery module, if in the presence of the data for needing to recover, obtaining power down protection overall information, being protected from the power down
The data unit information and corresponding save location for having preserved data are parsed in shield overall information, from data cell letter
Breath parsing obtains the functional module belonging to data cell, and sends the data unit information to the functional module, controls
The functional module performs data recovery.
9. storage system power down protection system according to claim 8, it is characterised in that the data recovery module is used for
The data unit information and corresponding save location for having preserved data are parsed from the power down protection overall information, is wrapped
Include：
Whether the data recovery module is correct specifically for verifying the check value of the power down protection overall information, if so, then
The data unit information and corresponding save location for having preserved data are parsed from the power down protection overall information.
10. storage system power down protection system according to claim 8, it is characterised in that the enquiry module is additionally operable to
After inquiring the data for having preserved and being all successfully recovered, control empties the data for having preserved.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109597720A (en) * | 2018-12-10 | 2019-04-09 | 浪潮(北京)电子信息产业有限公司 | A kind of EMS memory management process, device, equipment and medium |
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