CN105589758B - A kind of SSD repositioning method and device - Google Patents
A kind of SSD repositioning method and device Download PDFInfo
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- CN105589758B CN105589758B CN201410654358.6A CN201410654358A CN105589758B CN 105589758 B CN105589758 B CN 105589758B CN 201410654358 A CN201410654358 A CN 201410654358A CN 105589758 B CN105589758 B CN 105589758B
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Abstract
The invention discloses a kind of SSD repositioning methods, the not high technical problem of the reliability for solving RAID.In the embodiment of the present invention, by the way that the reset moment for each SSD for including in RAID is compared, time difference between the reset moment of control every two SSD is both greater than equal to default time difference threshold value, it can avoid having the case where a large amount of SSD break down appearance simultaneously as far as possible in this way, improve the reliability of RAID.The invention also discloses corresponding devices.
Description
Technical field
The present invention relates to technical field of memory, in particular to a kind of SSD repositioning method and device.
Background technique
RAID (Redundant Array of Independent Disks, independent hard disk redundancy array) is a kind of data
Business datum is distributed on different hard disk drives by distribution technique, the technology, while in the business number of these distribution storages
According to middle addition redundant data, so that still can be driven by remaining hard disk when a certain number of hard disk drives break down
Data on dynamic device, by the data of loss by mathematical computations be restored back to come.
Assuming that the average annual crash rate of monolithic hard disk drive is AFR, this is a decimal between 0 and 1, then two
The probability that block hard disk drive breaks down simultaneously is AFR × AFR, and the probability that three pieces of hard disk drives break down simultaneously is
AFR × AFR × AFR, and so on.As it can be seen that the quantity of hard disk drive is more, then event occur simultaneously in these hard disk drives
The probability of barrier is lower.
RAID is exactly that the characteristics of " muti-piece hard disk drive while the probability to break down is extremely low " is utilized, data are dispersed
It is deployed on the different hard disk drive of muti-piece, to avoid monolithic or several pieces of hard drive fails that data is caused to be lost
It loses.It is the key that RAID is able to ascend one of reliability it can thus be seen that avoiding " while failing ".
Under normal circumstances, the hard disk drive itself for constituting RAID is exactly an embedded system, such as SSD (Solid
State Device/Solid State Drive, solid state hard disk), the size of code being implanted into each SSD is larger, and works as software
After scale reaches a certain level, software systems can generally use the means of timer, counter etc, come handle it is some more
Complexity, the longer service logic of durations.Based on the service logic of this mechanism, if implied in code and counter
It overflows, remove the relevant defect such as zero, then this defect, since it is desired that until longer runing time just will appear, so compared with
Difficulty is found in the development phase, meanwhile, such defect has generally arrived some regular time point, and the probability of appearance is larger.
So, a scene is imagined according to above description:
Constitute the code in each SSD of RAID, there are some counter defect, the defect exploitation test phase not by
It was found that.
This counter defect in each SSD electricity operation can cause after 100 days except zero is abnormal on SSD.
Each SSD for forming a RAID is usually to start simultaneously at operation, then the RAID has been after having run 100 days, institute
Some SSD since counter defect causes except zero is abnormal, may fail simultaneously because of the muti-piece SSD in the same RAID group and
Storage service is caused to interrupt, in some instances it may even be possible to will lead to loss of data.
By carrying out simple analysis to this scene it can be found that the root for causing storage service to interrupt is because being: RAID mechanism
This precondition for the hard disk drive " while failure probability is extremely low " being based on, by SSD counter it is relevant soft
Part defect is broken.RAID group based on SSD, the precondition of muti-piece SSD " while failure probability is extremely low ", in some cases
And be not present, this is further resulted under these scenes, and the reliability of RAID is not high.
Summary of the invention
The embodiment of the present invention provides a kind of SSD repositioning method and device, the not high technology of the reliability for solving RAID
Problem.
The first aspect of the present invention provides a kind of SSD repositioning method, comprising:
Using i-th of SSD for including in RAID as benchmark SSD, according to corresponding reset moment vertical sequence, than
When whether the time difference between the reset moment of i-th of SSD and the reset moment of i+1 SSD is more than or equal to default
Poor threshold value；
If being less than, the i+1 SSD is labeled as to the SSD needed to be reset, and continues to arrive in the past according to the reset moment
Sequence afterwards, successively the reset moment of i-th of SSD and reset moment are located at other after the i+1 SSD
Whether the time difference between the reset moment of SSD is more than or equal to the default time difference threshold value；
If the time difference resetted between the moment for resetting moment and the i+1 SSD of i-th of SSD greater than etc.
In the default time difference threshold value, then the i+1 SSD is enabled to replace i-th of SSD as new benchmark SSD, and continues to compare
The reset moment and reset moment of the i+1 SSD are located at the reset moment of other SSD after the i+1 SSD
Between time difference whether be more than or equal to the default time difference threshold value；
After each SSD being located at the reset moment for including in the RAID after i-th of SSD compares,
Control is wherein resetted labeled as the SSD needed to be reset respectively.
With reference to first aspect, in the first possible implementation of the first aspect, will include in the RAID
It resets after each SSD that the moment is located at after i-th of SSD compares, control wherein divides labeled as the SSD needed to be reset
It is not resetted, comprising:
After each SSD being located at the reset moment for including in the RAID after i-th of SSD compares,
It is described to judge whether the time difference between the reset moment of the specific SSD in SSD of the current time compared with participating in is more than or equal to
Default time difference threshold value；Wherein, the specific SSD are as follows: according to moment vertical sequence is resetted, participate in the SSD compared
The last one is not labeled as the SSD needed to be reset；
If it is greater than or equal to then controlling and wherein resetted respectively labeled as the SSD that needs to be reset.
With reference to first aspect or the first possible implementation of first aspect, second in first aspect are possible
In implementation, control is wherein resetted labeled as the SSD needed to be reset respectively, comprising:
After any one SSD in the SSD for being to label resets, every prefixed time interval to needs
Any one remaining SSD in the SSD of reset is resetted, and is resetted until by the SSD needed to be reset；Wherein, described
Prefixed time interval is more than or equal to the default time difference threshold value.
With reference to first aspect or the first possible implementation or second of possible implementation of first aspect, exist
In the third possible implementation of first aspect, control is wherein resetted labeled as the SSD needed to be reset respectively, is wrapped
It includes:
The state reset function of being carried using SSD is controlled the SSD needed to be reset and carries out self reset respectively；Or
It is resetted respectively by the SSD that RAID control needs to be reset.
With reference to first aspect or the first possible implementation of first aspect or second of possible implementation or
The third possible implementation, in a fourth possible implementation of the first aspect, the method also includes: in real time,
Timing or the reset moment for being periodically detected in the RAID each SSD for including, and recorded.
The second aspect of the present invention provides a kind of SSD resetting apparatus, comprising:
First comparison module, i-th of SSD for that will include in RAID is as benchmark SSD, according to the corresponding reset moment
Vertical sequence, the time difference between the reset moment of i-th of SSD and the reset moment of i+1 SSD be
It is no to be more than or equal to default time difference threshold value；
Second comparison module, if the i+1 SSD to be labeled as to the SSD needed to be reset, and continue for being less than
According to moment vertical sequence is resetted, successively the reset moment of i-th of SSD and resets the moment and be located at described the
Whether the time difference between the reset moment of other SSD after i+1 SSD is more than or equal to the default time difference threshold value；
Third comparison module, if for i-th of SSD the reset moment for resetting moment and the i+1 SSD it
Between time difference be more than or equal to the default time difference threshold value, then enable the i+1 SSD replace i-th of SSD as newly
Benchmark SSD, and the reset moment for continuing i+1 SSD described in comparison is located at after the i+1 SSD with the moment is resetted
Whether the time difference between the reset moment of other SSD is more than or equal to the default time difference threshold value；
Control module, for each SSD after the reset moment for including in the RAID is located at i-th of SSD
After comparing, control is wherein resetted labeled as the SSD needed to be reset respectively.
In conjunction with second aspect, in the first possible implementation of the second aspect, the control module is specifically used for:
After each SSD being located at the reset moment for including in the RAID after i-th of SSD compares,
It is described to judge whether the time difference between the reset moment of the specific SSD in SSD of the current time compared with participating in is more than or equal to
Default time difference threshold value；Wherein, the specific SSD are as follows: according to moment vertical sequence is resetted, participate in the SSD compared
The last one is not labeled as the SSD needed to be reset；
If it is greater than or equal to then controlling and wherein resetted respectively labeled as the SSD that needs to be reset.
In conjunction with the possible implementation of the first of second aspect or second aspect, second in second aspect is possible
In implementation, the control module is used to control wherein to be resetted labeled as the SSD needed to be reset respectively, specifically:
After any one SSD in the SSD for being to label resets, every prefixed time interval to needs
Any one remaining SSD in the SSD of reset is resetted, and is resetted until by the SSD needed to be reset；Wherein, described
Prefixed time interval is more than or equal to the default time difference threshold value.
In conjunction with the possible implementation of the first of second aspect or second aspect or second of possible implementation,
In the third possible implementation of second aspect, the control module is used to control wherein labeled as the SSD needed to be reset
It is resetted respectively, comprising:
The state reset function of being carried using SSD is controlled the SSD needed to be reset and carries out self reset respectively；Or
It is resetted respectively by the SSD that RAID control needs to be reset.
In conjunction with the possible implementation of the first of second aspect or second aspect or second of possible implementation or
The third possible implementation, in the fourth possible implementation of the second aspect, described device further include detection mould
Block is used for: real-time, timing or the reset moment for being periodically detected in the RAID each SSD for including, and is recorded.
The third aspect of the present invention provides a kind of SSD resetting apparatus, memory and processing including being connected to same bus
Device；
The memory, for storing instruction；
The processor makees i-th of SSD for including in redundant array of independent disks RAID for executing described instruction
For benchmark SSD, according to corresponding reset moment vertical sequence, the reset moment of i-th of SSD and i+1
Whether the time difference between the reset moment of a SSD is more than or equal to default time difference threshold value；If being less than, by the i+1 SSD
Labeled as the SSD needed to be reset, and continue according to moment vertical sequence is resetted, successively i-th of SSD is answered
Whether the time difference that position moment and reset moment were located between the reset moment of other SSD after the i+1 SSD is greater than
Equal to the default time difference threshold value；If between reset moment and the reset moment of the i+1 SSD of i-th of SSD
Time difference is more than or equal to the default time difference threshold value, then the i+1 SSD is enabled to replace i-th of SSD as new benchmark
SSD, and the reset moment for continuing i+1 SSD described in comparison is located at other after the i+1 SSD with the reset moment
Whether the time difference between the reset moment of SSD is more than or equal to the default time difference threshold value；It is answered by include in the RAID
The position moment is located at after each SSD after i-th of SSD compares, and control is wherein distinguished labeled as the SSD needed to be reset
It is resetted.
In conjunction with the third aspect, in the first possible implementation of the third aspect, the processor is used for by institute
It states after each SSD that the reset moment for including in RAID is located at after i-th of SSD compares, control is wherein labeled as
The SSD needed to be reset is resetted respectively, specifically:
After each SSD being located at the reset moment for including in the RAID after i-th of SSD compares,
It is described to judge whether the time difference between the reset moment of the specific SSD in SSD of the current time compared with participating in is more than or equal to
Default time difference threshold value；Wherein, the specific SSD are as follows: according to moment vertical sequence is resetted, participate in the SSD compared
The last one is not labeled as the SSD needed to be reset；
If it is greater than or equal to then controlling and wherein resetted respectively labeled as the SSD that needs to be reset.
In conjunction with the possible implementation of the first of the third aspect or the third aspect, second in the third aspect is possible
In implementation, the processor is used to control wherein to be resetted labeled as the SSD needed to be reset respectively, specifically:
After any one SSD in the SSD for being to label resets, every prefixed time interval to needs
Any one remaining SSD in the SSD of reset is resetted, and is resetted until by the SSD needed to be reset；Wherein, described
Prefixed time interval is more than or equal to the default time difference threshold value.
In conjunction with the possible implementation of the first of the third aspect or the third aspect or second of possible implementation,
In the third possible implementation of the third aspect, the processor is used to control wherein labeled as SSD points needed to be reset
It is not resetted, specifically:
The state reset function of being carried using SSD is controlled the SSD needed to be reset and carries out self reset respectively；Or
It is resetted respectively by the SSD that RAID control needs to be reset.
In conjunction with the possible implementation of the first of the third aspect or the third aspect or second of possible implementation or
The third possible implementation, in the fourth possible implementation of the third aspect, the processor is also used to: being executed
Described instruction, real-time, timing or the reset moment for being periodically detected in the RAID each SSD for including, and recorded.
In the embodiment of the present invention, it can compare between reset moment and the reset moment of i+1 SSD of i-th of SSD
Whether the time difference be more than or equal to the default time difference threshold value, if being less than, the i+1 SSD is labeled as needing to be reset
SSD, and continue subsequent comparison, subsequent comparison procedure is similar with the comparison procedure, if it is greater than or equal to then by the i+1
A SSD is set as new benchmark SSD, and continues to compare between reset moment and the reset moment of new benchmark SSD of other SSD
Time difference whether be more than or equal to the default time difference threshold value, subsequent comparison procedure with comparison procedure be before all it is similar,
The SSD needed to be reset can be thus marked, and successively these SSD are resetted, when guaranteeing the reset of every two SSD as far as possible
Time difference between quarter is both greater than equal to the default time difference threshold value, so namely as far as possible by the quarter when operation starts of each SSD
Between be staggered, it is assumed that each SSD for constituting a RAID is a series-produced SSD, and has aacode defect in these SSD, but each
The time that SSD brings into operation is different, so that the probability that each SSD breaks down simultaneously is greatly reduced, SSD may or can occur
Failure, but the time that different SSD breaks down is different, is relatively easy to repair, avoids the muti-piece in the same RAID group as far as possible
SSD fails simultaneously, guarantees the continuity of storage service, also avoids loss of data as far as possible, improves RAID reliability.
Detailed description of the invention
Fig. 1 is the broad flow diagram of SSD repositioning method in the embodiment of the present invention；
Fig. 2 is the primary structure block diagram of SSD resetting apparatus in the embodiment of the present invention；
Fig. 3 is the primary structure schematic diagram of SSD resetting apparatus in the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention provides a kind of SSD repositioning method, comprising: using i-th of SSD for including in RAID as benchmark
SSD, according to corresponding reset moment vertical sequence, i-th of SSD's resets moment and i+1 SSD's
Whether the time difference resetted between the moment is more than or equal to default time difference threshold value；If being less than, the i+1 SSD is labeled as
The SSD needed to be reset, and continue according to resetting moment vertical sequence, successively reset moment of i-th of SSD
Whether the time difference being located between the reset moment of other SSD after the i+1 SSD with the reset moment is more than or equal to institute
State default time difference threshold value；If i-th of SSD's resets moment and the time difference of the i+1 SSD resetted between the moment
More than or equal to the default time difference threshold value, then the i+1 SSD is enabled to replace i-th of SSD as new benchmark SSD, and
Continue reset moment of i+1 SSD described in comparison and resets answering for other SSD that the moment is located at after the i+1 SSD
Whether the time difference between the moment of position is more than or equal to the default time difference threshold value；In the reset moment position that will include in the RAID
After each SSD after i-th of SSD compares, control is wherein answered labeled as the SSD needed to be reset respectively
Position.
In the embodiment of the present invention, it can compare between reset moment and the reset moment of i+1 SSD of i-th of SSD
Whether the time difference be more than or equal to the default time difference threshold value, if being less than, the i+1 SSD is labeled as needing to be reset
SSD, and continue subsequent comparison, subsequent comparison procedure is similar with the comparison procedure, if it is greater than or equal to then by the i+1
A SSD is set as new benchmark SSD, and continues to compare between reset moment and the reset moment of new benchmark SSD of other SSD
Time difference whether be more than or equal to the default time difference threshold value, subsequent comparison procedure with comparison procedure be before all it is similar,
The SSD needed to be reset can be thus marked, and successively these SSD are resetted, when guaranteeing the reset of every two SSD as far as possible
Time difference between quarter is both greater than equal to the default time difference threshold value, so namely as far as possible by the quarter when operation starts of each SSD
Between be staggered, it is assumed that each SSD for constituting a RAID is a series-produced SSD, and has aacode defect in these SSD, but each
The time that SSD brings into operation is different, so that the probability that each SSD breaks down simultaneously is greatly reduced, SSD may or can occur
Failure, but the time that different SSD breaks down is different, is relatively easy to repair, avoids the muti-piece in the same RAID group as far as possible
SSD fails simultaneously, guarantees the continuity of storage service, also avoids loss of data as far as possible, improves RAID reliability.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
In addition, the terms " system " and " network " are often used interchangeably herein.The terms " and/
Or ", only a kind of incidence relation for describing affiliated partner, indicates may exist three kinds of relationships, for example, A and/or B, it can be with table
Show: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, character "/" herein, such as without special theory
It is bright, typically represent the relationship that forward-backward correlation object is a kind of "or".
The embodiment of the present invention is described in further detail with reference to the accompanying drawings of the specification.
Referring to Figure 1, the embodiment of the present invention provides a kind of SSD repositioning method, and the main flow of the method is described as follows.
Step 101: using i-th of SSD for including in RAID as benchmark SSD, from front to back according to the corresponding reset moment
Sequence, whether the time difference between the reset moment of i-th of SSD and the reset moment of i+1 SSD be greater than
In default time difference threshold value.Wherein, if i-th of SSD's resets moment and the time of i+1 SSD resetted between the moment
Difference is less than default time difference threshold value, executes step 102, if the reset moment at the reset moment and i+1 SSD of i-th of SSD
Between time difference be more than or equal to default time difference threshold value, execute step 103.
Optionally, in the embodiment of the present invention, each SSD for constituting RAID can be ranked up first, the foundation of sequence is just
It is each SSD corresponding reset moment, that is, be ranked up according to moment vertical sequence is resetted to each SSD, obtain the first sequence
Column.Certainly, also possible without sorting, as long as being handled in processing according to the reset moment of each SSD, sort
It is intended merely to deal with more convenient.And the workload and required duration to sort be all it is very small, almost can be with
Ignore.
It is just whole less than or equal to M that i-th of SSD is selected from each SSD for constituting RAID as the benchmark SSD, i
Number, wherein M is the total quantity for constituting the SSD of RAID.
In order to make each SSD for including in RAID that can access processing, preferably, i can be equal to 1, here first
A SSD refers to first SSD in the First ray, the i.e. SSD positioned at the front end of the First ray, that is, respectively
The SSD for resetting the moment is reached in SSD at first.
After selecting the benchmark SSD, can the benchmark SSD the reset moment and the i+1 SSD
The reset moment between time difference whether be more than or equal to the default time difference threshold value.For example, if i-th of SSD is described
First SSD in First ray, then, select first SSD as the benchmark SSD after, institute can be compared
Whether the time difference resetted between moment and the reset moment of second SSD in the First ray for stating first SSD is big
In being equal to the default time difference threshold value, second SSD in the First ray here is namely in the First ray
Come first after first SSD SSD.
In the embodiment of the present invention, the default time difference threshold value, which can according to need, to be set, setting principle be to be to repair
The failure of multiple SSD reserves enough operating times.Assuming that will reset/hang dead lack after concealing long-play inside SSD
Fall into, then certain block SSD reset/extension after death, generally require several hours time to reconstruct data, and need 1~2 day left side
The right time replaces SSD.For example, can be set as 72 hours, or it also can be set as other durations.
Step 102: if being less than, when the i+1 SSD being labeled as to the SSD needed to be reset, and being continued according to resetting
Carve vertical sequence, successively the reset moment of i-th of SSD and reset the moment be located at the i+1 SSD it
Whether the time difference between the reset moment of other SSD afterwards is more than or equal to the default time difference threshold value.
If the time difference resetted between the moment for resetting moment and the i+1 SSD of i-th of SSD is less than institute
Default time difference threshold value is stated, then the i+1 SSD can be labeled as the SSD needed to be reset, and continues subsequent class
Seemingly compare, that is, continues reset moment of i-th of SSD described in comparison and answered with other SSD being located at after the i+1 SSD
Whether the time difference between the moment of position is more than or equal to the default time difference threshold value.It is, continuing described in comparison i-th of SSD's
Whether the time difference resetted between moment and the reset moment of the i-th+2 SSD is more than or equal to the default time difference threshold value, if small
In the i-th+2 SSD being then labeled as the SSD that needs to be reset, and continue the reset moment of i-th of SSD described in comparison and the
Whether the time difference between the reset moment of i+3 SSD is more than or equal to the default time difference threshold value, and so on.
Step 103: if i-th of SSD's resets moment and the time of the i+1 SSD resetted between the moment
Difference is more than or equal to the default time difference threshold value, then the i+1 SSD is enabled to replace i-th of SSD as new benchmark SSD,
And continues the reset moment of i+1 SSD described in comparison and reset other SSD's that the moment is located at after the i+1 SSD
Whether the time difference resetted between the moment is more than or equal to the default time difference threshold value.
If if when the comparison result of step 101 is the reset for resetting moment and the i+1 SSD of i-th of SSD
Time difference between quarter is more than or equal to the default time difference threshold value, then just setting new benchmark for the i+1 SSD
SSD, and the reset moment of the i+1 SSD and reset moment are located at the i+1 in the same manner for beginning
Whether the time difference between the reset moment of other SSD after SSD is more than or equal to the default time difference threshold value.
If that is, if the comparison result of step 101 is the reset moment of i-th of SSD and answering for the i+1 SSD
Time difference between the moment of position is more than or equal to the default time difference threshold value, then just setting new base for the i+1 SSD
Quasi- SSD, and the time difference started between the reset moment of i+1 SSD described in comparison and the reset moment of the i-th+2 SSD be
It is no to be more than or equal to the default time difference threshold value, if the reset moment for resetting moment and the i-th+2 SSD of the i+1 SSD it
Between time difference be less than the default time difference threshold value, then the i-th+2 SSD are labeled as the SSD that needs to be reset, continue to compare
It is described pre- whether the time difference between the reset moment of the i+1 SSD and the reset moment of the i-th+3 SSD is more than or equal to
If time difference threshold value, and if the time difference between the reset moment of the i+1 SSD and the reset moment of the i-th+2 SSD is greater than
Equal to the default time difference threshold value, then by the i-th+2 SSD new benchmark SSD is set again, and start i-th described in comparison+
The reset moment of 2 SSD and reset the time that the moment is located between the reset moment of other SSD after the i-th+2 SSD
Whether difference is more than or equal to the default time difference threshold value, and so on.
Step 101,102,103 be one circulation execute process, until will reset the moment be located at i-th of SSD it
After each SSD afterwards compares, circulation stops.
Step 104: each SSD after the reset moment for including in the RAID to be located to i-th of SSD compares
After, control is wherein resetted labeled as the SSD needed to be reset respectively.
In the embodiment of the present invention, in comparison procedure, the SSD needed to be reset is marked, then entire
After circulation compares, these can be marked with the SSD needed to be reset and resetted respectively.
Optionally, in the embodiment of the present invention, the reset moment that will include in the RAID be located at i-th of SSD it
After each SSD afterwards compares, control is wherein resetted labeled as the SSD needed to be reset respectively, comprising:
After each SSD being located at the reset moment for including in the RAID after i-th of SSD compares,
It is described to judge whether the time difference between the reset moment of the specific SSD in SSD of the current time compared with participating in is more than or equal to
Default time difference threshold value；Wherein, the specific SSD are as follows: according to moment vertical sequence is resetted, participate in the SSD compared
The last one is not labeled as the SSD needed to be reset；
If it is greater than or equal to then controlling and wherein resetted respectively labeled as the SSD that needs to be reset.
That is, first having to the reset for judging the specific SSD in SSD of the current time compared with participating in front of reset
Whether the time difference between the moment is more than or equal to the default time difference threshold value, if being not more than, temporarily without resetting, until etc.
Until the time difference of the specific SSD in SSD of the current time compared with participating in resetted between the moment is more than or equal to described
It is resetted again when default time difference threshold value, between the reset moment that can guarantee the every two SSD for constituting the RAID in this way
Time difference is both greater than equal to the default time difference threshold value, guarantees that each SSD in the RAID will not break down simultaneously as far as possible,
System reliability is improved, ensures the continuity of data safety and business.
Optionally, in the embodiment of the present invention, control is wherein resetted labeled as the SSD needed to be reset respectively, comprising:
After any one SSD in the SSD for being to label resets, every prefixed time interval to needs
Any one remaining SSD in the SSD of reset is resetted, and is resetted until by the SSD needed to be reset；Wherein, described
Prefixed time interval is more than or equal to the default time difference threshold value.
That is, when resetting, it is primary that only the SSD that one of them is needed to be reset is resetted, first from multiple labeled as needing
A SSD is selected in the SSD of position, it is resetted, is waited after a reset, is reached between the preset time to time interval
Every rear, remaining any of the SSD needed to be reset of reselection is resetted, and so on, it is needed to be reset until by each
SSD reset and finish until.Also be to try in this way the every two SSD for guaranteeing to constitute the RAID reset between the moment when
Between difference both greater than be equal to the default time difference threshold value, guarantee that each SSD in the RAID will not break down simultaneously as far as possible, mention
High system reliability ensures the continuity of data safety and business.
Optionally, in the embodiment of the present invention, control is wherein resetted labeled as the SSD needed to be reset respectively, comprising:
The state reset function of being carried using SSD is controlled the SSD needed to be reset and carries out self reset respectively；Or
It is resetted respectively by the SSD that RAID control needs to be reset.
That is, can voluntarily complete to reset by SSD if SSD comes with state reset function, and if SSD itself not
With state reset function, then need to support that SSD is resetted by the RAID.Either SSD self-resetting, or by
RAID supports that SSD is resetted, and specific reseting procedure has been the technology of comparative maturity in the prior art, few superfluous here
It states.
It should be noted that constituting in each SSD of a RAID, state reset function may be all carried, or may
All without state reset function, or state reset function and another part may also be partially carried without state reset function
Can, it is all a possibility that be included in the present invention protect in the range of.
Optionally, in the embodiment of the present invention, the method can also include:
In real time, timing or it is periodically detected in the RAID reset moment of each SSD for including, and is recorded.
When accessing array again after having SSD first or reset or when SSD successfully completes state reset, Ke Yiji
The lower moment is recorded, the moment of the embodiment of the present invention is referred to as " the state initialization moment " of SSD, the reset moment of also referred to as SSD.
When recording the moment, what be can recorde is relative instant, i.e., at the time of when starting relative to array, or can also
To be absolute moment, i.e., absolute temporal information.Herein, specific recording mode has no effect on implementation and effect of the invention.
It, can real-time, timing or the reset moment for periodically detecting each SSD inside array.For example, can be set
A cycle task can actively check the reset moment of all SSD every a cycle, and can be according to each SSD's
The reset moment is ranked up each SSD.
Illustrate the SSD repositioning method in the embodiment of the present invention with a specific example below.
Consider a scene, it is assumed that there are 10 pieces of SSD, state reset time point respectively, (table 1 was shown as shown in table 1
According to the result after the vertical sequence sequence of reset moment):
Table 1
Assuming that the default time difference threshold value is 3 days, that is, 72 hours, it is assumed that current time is 12:00 on March 7.
According to the method in the embodiment of the present invention, carry out the following processing:
1, each SSD in table 1 is ranked up according to its corresponding reset moment vertical sequence, obtains first
Sequence.
2, select first SSD in the First ray as benchmark SSD, using SSD followed by as current
SSD。
3, the reset moment of benchmark SSD and current SSD are compared:
If 3A, time difference between the two are less than the default time difference threshold value, current SSD is marked as needing multiple
Position.Using the next adjacent SSD of current SSD as new current SSD, step 3 is repeated.
If 3B, time difference between the two are more than or equal to the default time difference threshold value, terminate epicycle and compare, it will be current
SSD repeats step 3 as new benchmark SSD, and using the next SSD for following benchmark SSD closely as current SSD.
After by whole SSD in table 1 relatively, if current time is not flagged as needing apart from the last one
The reset moment of the SSD of reset, between time difference be less than the default time difference threshold value, then carry out waiting until current time
The reset moment of the SSD needed to be reset is not flagged as apart from the last one, between time difference be more than or equal to it is described default
Time difference threshold value.
In time difference of the current time between the reset moment that the last one is not flagged as the SSD needed to be reset
More than or equal to the default time difference threshold value, then from being marked in the SSD for needing to carry out state reset, arbitrarily select a SSD into
Row state reset, waits after a reset, when the time difference being more than or equal to the default time difference threshold value again, again from be marked need
It carries out in the remaining SSD of state reset, any one SSD of selection carries out state reset, until all be marked needs to carry out
Until the SSD of state reset completes state reset.
To table 1 apply the above method, it is obtaining the result is that:
1, this 6 pieces of SSD of #2, #3, #4, #5, #6, #7 compare #1SSD, and the time difference resetted between the moment is respectively less than described
Default time difference threshold value (72 hours), then this 6 pieces of SSD are marked as needing to carry out state reset.
2, #8SSD compares #1SSD, and the time difference resetted between the moment is greater than the default time difference threshold value, therefore does not need
Carry out state reset.Meanwhile using #8SSD as new benchmark SSD, and when comparing the reset for resetting moment and #9SSD of #8SSD
Whether the time difference between quarter is more than or equal to default time difference threshold value, and comparison result is less than then by #9SSD labeled as needing to be reset
SSD, when continuing the time difference between the reset moment for comparing #8SSD and the reset moment of #10SSD and whether being more than or equal to default
Poor threshold value, comparison result are less than #10SSD is then labeled as the SSD that needs to be reset, so far compares and finishes.
3, this 2 pieces of SSD of #9, #10 compare #8SSD, and the time difference resetted between the moment is respectively less than the default time difference threshold
Value, then this 2 pieces of SSD are marked as needing state reset.
4, by steps 1 and 2 and 3, #1 and this 2 pieces of SSD of #8 are not flagged as needing to carry out state reset, and remaining
SSD is marked as needing to carry out state reset.
When current time is the reset of March 7 12:00, #8SSD (last block is not marked with the SSD needed to be reset)
Quarter is 14:25 on March 4, and the time difference between the two was less than 72 hours, so needing to wait.
Wait until 14:25 on March 7 (or some time a little later again), to the SSD being marked, any selection one
State reset is carried out, i.e., arbitrarily selects one to be resetted from #2, #3, #4, #5, #6, #7, #9 and #10SSD, it is small after 72
When or the longer time, then arbitrarily arbitrarily select one to be resetted from remaining SSD, until by #2, #3, #4, #5, #6, #
7, #9 and #10SSD resets finish until.
In the embodiment of the present invention, after it is all mark the SSD for being to complete state reset after, then a RAID
In include the runing time interval of all SSD be all satisfied threshold requirement.Guarantee the every two of the composition RAID as far as possible in this way
Time difference between the reset moment of SSD is both greater than equal to the default time difference threshold value, guarantees each of described RAID as far as possible
SSD will not break down simultaneously, and when SSD breaks down, also next SSD be likely to occur failure time it
It is preceding to reserve enough fault correction times as far as possible, system reliability is improved, ensures the continuity of data safety and business.
Fig. 2 is referred to, based on the same inventive concept, the embodiment of the present invention provides a kind of SSD resetting apparatus, described device packet
Include the first comparison module 201, the second comparison module 202, third comparison module 203 and control module 204.
First comparison module 201, i-th of SSD for that will include in redundant array of independent disks RAID is as benchmark
SSD, according to corresponding reset moment vertical sequence, i-th of SSD's resets moment and i+1 SSD's
Whether the time difference resetted between the moment is more than or equal to default time difference threshold value；
Second comparison module 202, if for being less than, by the i+1 SSD labeled as the SSD needed to be reset, and after
Continue according to moment vertical sequence is resetted, successively the reset moment of i-th of SSD and reset moment are described in
Whether the time difference between the reset moment of other SSD after i+1 SSD is more than or equal to the default time difference threshold value；
Third comparison module 203, if for i-th of SSD when resetting moment and the reset of the i+1 SSD
Time difference between quarter is more than or equal to the default time difference threshold value, then the i+1 SSD is enabled to replace i-th of SSD conduct
New benchmark SSD, and continue i+1 SSD described in comparison the reset moment and reset the moment be located at the i+1 SSD it
Whether the time difference between the reset moment of other SSD afterwards is more than or equal to the default time difference threshold value；
Control module 204, for each after the reset moment for including in the RAID to be located to i-th of SSD
After SSD compares, control is wherein resetted labeled as the SSD needed to be reset respectively.
Optionally, in the embodiment of the present invention, control module 204 is specifically used for:
After each SSD being located at the reset moment for including in the RAID after i-th of SSD compares,
It is described to judge whether the time difference between the reset moment of the specific SSD in SSD of the current time compared with participating in is more than or equal to
Default time difference threshold value；Wherein, the specific SSD are as follows: according to moment vertical sequence is resetted, participate in the SSD compared
The last one is not labeled as the SSD needed to be reset；
If it is greater than or equal to then controlling and wherein resetted respectively labeled as the SSD that needs to be reset.
Optionally, in the embodiment of the present invention, control module 204 is used to control wherein labeled as the SSD difference needed to be reset
It is resetted, specifically:
After any one SSD in the SSD for being to label resets, every prefixed time interval to needs
Any one remaining SSD in the SSD of reset is resetted, and is resetted until by the SSD needed to be reset；Wherein, described
Prefixed time interval is more than or equal to the default time difference threshold value.
Optionally, in the embodiment of the present invention, control module 204 is used to control wherein labeled as the SSD difference needed to be reset
It is resetted, comprising:
The state reset function of being carried using SSD is controlled the SSD needed to be reset and carries out self reset respectively；Or
It is resetted respectively by the SSD that RAID control needs to be reset.
Optionally, in the embodiment of the present invention, described device can also include detection module, be used for: real-time, timing or period
Property detects the reset moment for each SSD for including in the RAID, and is recorded.
Fig. 3 is referred to, based on the same inventive concept, the embodiment of the present invention provides a kind of SSD resetting apparatus, including is connected to
The memory 301 and processor 302 of same bus 300.
Memory 301 executes the instruction of required by task for storage processor 302
Processor 302, the instruction stored for executing memory 301 will include in redundant array of independent disks RAID
I-th of SSD is as benchmark SSD, according to corresponding reset moment vertical sequence, when the reset of i-th of SSD
Whether the time difference carved between the reset moment of i+1 SSD is more than or equal to default time difference threshold value；It, will be described if being less than
I+1 SSD is labeled as the SSD that needs to be reset, and continues according to moment vertical sequence is resetted, and successively more described the
The reset moment of i SSD and reset the time that the moment is located between the reset moment of other SSD after the i+1 SSD
Whether difference is more than or equal to the default time difference threshold value；If the reset at the reset moment and the i+1 SSD of i-th of SSD
Time difference between moment is more than or equal to the default time difference threshold value, then enables the i+1 SSD replace i-th of SSD and make
For new benchmark SSD, and continue the reset moment of i+1 SSD described in comparison and reset the moment to be located at the i+1 SSD
Whether the time difference between the reset moment of other SSD later is more than or equal to the default time difference threshold value；By the RAID
In include reset moment each SSD for being located at after i-th of SSD compare after, control is wherein multiple labeled as needing
The SSD of position is resetted respectively.
Optionally, in the embodiment of the present invention, processor 302 is used to be located at institute at the reset moment that will include in the RAID
It states after each SSD after i-th of SSD compares, control is wherein resetted labeled as the SSD needed to be reset respectively, is had
Body are as follows:
After each SSD being located at the reset moment for including in the RAID after i-th of SSD compares,
It is described to judge whether the time difference between the reset moment of the specific SSD in SSD of the current time compared with participating in is more than or equal to
Default time difference threshold value；Wherein, the specific SSD are as follows: according to moment vertical sequence is resetted, participate in the SSD compared
The last one is not labeled as the SSD needed to be reset；
If it is greater than or equal to then controlling and wherein resetted respectively labeled as the SSD that needs to be reset.
Optionally, in the embodiment of the present invention, processor 302 be used to control be wherein labeled as the SSD that needs to be reset respectively into
Row resets, specifically:
After any one SSD in the SSD for being to label resets, every prefixed time interval to needs
Any one remaining SSD in the SSD of reset is resetted, and is resetted until by the SSD needed to be reset；Wherein, described
Prefixed time interval is more than or equal to the default time difference threshold value.
Optionally, in the embodiment of the present invention, processor 302 be used to control be wherein labeled as the SSD that needs to be reset respectively into
Row resets, specifically:
The state reset function of being carried using SSD is controlled the SSD needed to be reset and carries out self reset respectively；Or
It is resetted respectively by the SSD that RAID control needs to be reset.
Optionally, in the embodiment of the present invention, processor 302 is also used to: being executed the instruction that memory 301 stores, in real time, is determined
When or be periodically detected in the RAID reset moment of each SSD for including, and recorded.
The embodiment of the present invention provides a kind of SSD repositioning method, comprising: using i-th of SSD for including in RAID as benchmark
SSD, according to corresponding reset moment vertical sequence, i-th of SSD's resets moment and i+1 SSD's
Whether the time difference resetted between the moment is more than or equal to default time difference threshold value；If being less than, the i+1 SSD is labeled as
The SSD needed to be reset, and continue according to resetting moment vertical sequence, successively reset moment of i-th of SSD
Whether the time difference being located between the reset moment of other SSD after the i+1 SSD with the reset moment is more than or equal to institute
State default time difference threshold value；If i-th of SSD's resets moment and the time difference of the i+1 SSD resetted between the moment
More than or equal to the default time difference threshold value, then the i+1 SSD is enabled to replace i-th of SSD as new benchmark SSD, and
Continue reset moment of i+1 SSD described in comparison and resets answering for other SSD that the moment is located at after the i+1 SSD
Whether the time difference between the moment of position is more than or equal to the default time difference threshold value；In the reset moment position that will include in the RAID
After each SSD after i-th of SSD compares, control is wherein answered labeled as the SSD needed to be reset respectively
Position.
In the embodiment of the present invention, it can compare between reset moment and the reset moment of i+1 SSD of i-th of SSD
Whether the time difference be more than or equal to the default time difference threshold value, if being less than, the i+1 SSD is labeled as needing to be reset
SSD, and continue subsequent comparison, subsequent comparison procedure is similar with the comparison procedure, if it is greater than or equal to then by the i+1
A SSD is set as new benchmark SSD, and continues to compare between reset moment and the reset moment of new benchmark SSD of other SSD
Time difference whether be more than or equal to the default time difference threshold value, subsequent comparison procedure with comparison procedure be before all it is similar,
The SSD needed to be reset can be thus marked, and successively these SSD are resetted, when guaranteeing the reset of every two SSD as far as possible
Time difference between quarter is both greater than equal to the default time difference threshold value, so namely as far as possible by the quarter when operation starts of each SSD
Between be staggered, it is assumed that each SSD for constituting a RAID is a series-produced SSD, and has aacode defect in these SSD, but each
The time that SSD brings into operation is different, so that the probability that each SSD breaks down simultaneously is greatly reduced, SSD may or can occur
Failure, but the time that different SSD breaks down is different, is relatively easy to repair, avoids the muti-piece in the same RAID group as far as possible
SSD fails simultaneously, guarantees the continuity of storage service, also avoids loss of data as far as possible, improves RAID reliability.
It is apparent to those skilled in the art that for convenience and simplicity of description, only with above-mentioned each function
The division progress of module can according to need and for example, in practical application by above-mentioned function distribution by different function moulds
Block is completed, i.e., the internal structure of device is divided into different functional modules, to complete all or part of function described above
Energy.The specific work process of the system, apparatus, and unit of foregoing description, can be with reference to corresponding in preceding method embodiment
Journey, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the module or
The division of unit, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units
Or component can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, institute
Display or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device or unit
Indirect coupling or communication connection can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
It is each that equipment (can be personal computer, server or the network equipment etc.) or processor (processor) execute the application
The all or part of the steps of embodiment the method.And storage medium above-mentioned include: USB flash disk, mobile hard disk, read-only memory,
The various media that can store program code such as random access memory, magnetic or disk.
The above, above embodiments are only described in detail to the technical solution to the application, but the above implementation
The explanation of example is merely used to help understand method and its core concept of the invention, should not be construed as limiting the invention.This
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those skilled in the art, should all cover
Within protection scope of the present invention.
Claims (10)
1. a kind of solid-state hard disk SSD repositioning method characterized by comprising
Using i-th of SSD for including in redundant array of independent disks RAID as benchmark SSD, in the past according to the corresponding reset moment
Whether the time difference of the sequence after arriving, i-th of SSD resetted between moment and the reset moment of i+1 SSD is big
Time difference threshold value is preset in being equal to；
If being less than, the i+1 SSD is labeled as to the SSD needed to be reset, and is continued vertical according to the moment is resetted
Sequentially, successively the reset moment of i-th of SSD and reset moment are located at other SSD after the i+1 SSD
The reset moment between time difference whether be more than or equal to the default time difference threshold value；
If the time difference resetted between the moment for resetting moment and the i+1 SSD of i-th of SSD is more than or equal to institute
Default time difference threshold value is stated, then enables the i+1 SSD replace i-th of SSD as new benchmark SSD, and continue to compare institute
The reset moment and reset moment for stating i+1 SSD were located between the reset moment of other SSD after the i+1 SSD
Time difference whether be more than or equal to the default time difference threshold value；
After each SSD being located at the reset moment for including in the RAID after i-th of SSD compares, control
Wherein resetted respectively labeled as the SSD needed to be reset；Wherein,
Control is wherein resetted labeled as the SSD needed to be reset respectively, comprising:
After any one SSD in the SSD for being to label resets, every prefixed time interval to needing to be reset
SSD in any one remaining SSD resetted, resetted until by the SSD needed to be reset；Wherein, described default
Time interval is more than or equal to the default time difference threshold value.
2. the method as described in claim 1, which is characterized in that be located at described the at the reset moment that will include in the RAID
After each SSD after i SSD compares, control is wherein resetted labeled as the SSD needed to be reset respectively, comprising:
After each SSD being located at the reset moment for including in the RAID after i-th of SSD compares, judgement
Whether the time difference between the reset moment of the specific SSD in SSD of the current time compared with participating in is more than or equal to described default
Time difference threshold value；Wherein, the specific SSD are as follows: according to moment vertical sequence is resetted, participate in last in the SSD compared
One SSD for being not labeled as needing to be reset；
If it is greater than or equal to then controlling and wherein resetted respectively labeled as the SSD that needs to be reset.
3. method according to claim 1 or 2, which is characterized in that control is wherein carried out labeled as the SSD needed to be reset respectively
It resets, comprising:
The state reset function of being carried using SSD is controlled the SSD needed to be reset and carries out self reset respectively；Or
It is resetted respectively by the SSD that RAID control needs to be reset.
4. method according to claim 1 or 2, which is characterized in that the method also includes: in real time, periodically or periodically inspection
The reset moment for each SSD for including in the RAID is surveyed, and is recorded.
5. method as claimed in claim 3, which is characterized in that the method also includes: real-time, timing is periodically detected institute
The reset moment for each SSD for including in RAID is stated, and is recorded.
6. a kind of solid-state hard disk SSD resetting apparatus, which is characterized in that memory and processor including being connected to same bus；
The memory, for storing instruction；
The processor, for executing described instruction, using i-th of SSD for including in redundant array of independent disks RAID as base
Quasi- SSD, according to corresponding reset moment vertical sequence, the reset moment of i-th of SSD and i+1 SSD
The reset moment between time difference whether be more than or equal to default time difference threshold value；If being less than, the i+1 SSD is marked
For the SSD needed to be reset, and continue according to resetting moment vertical sequence, successively when the reset of i-th of SSD
It carves and resets whether the time difference that the moment was located between the reset moment of other SSD after the i+1 SSD is more than or equal to
The default time difference threshold value；If i-th of SSD's resets moment and the time of the i+1 SSD resetted between the moment
Difference is more than or equal to the default time difference threshold value, then the i+1 SSD is enabled to replace i-th of SSD as new benchmark SSD,
And continues the reset moment of i+1 SSD described in comparison and reset other SSD's that the moment is located at after the i+1 SSD
Whether the time difference resetted between the moment is more than or equal to the default time difference threshold value；At the reset moment that will include in the RAID
After each SSD after i-th of SSD compares, control is wherein answered labeled as the SSD needed to be reset respectively
Position.
7. device as claimed in claim 6, which is characterized in that the processor is used in the reset that will include in the RAID
Moment is located at after each SSD after i-th of SSD compares, control wherein labeled as the SSD needed to be reset respectively into
Row resets, specifically:
After each SSD being located at the reset moment for including in the RAID after i-th of SSD compares, judgement
Whether the time difference between the reset moment of the specific SSD in SSD of the current time compared with participating in is more than or equal to described default
Time difference threshold value；Wherein, the specific SSD are as follows: according to moment vertical sequence is resetted, participate in last in the SSD compared
One SSD for being not labeled as needing to be reset；
If it is greater than or equal to then controlling and wherein resetted respectively labeled as the SSD that needs to be reset.
8. device as claimed in claims 6 or 7, which is characterized in that the processor is wherein multiple labeled as needing for controlling
The SSD of position is resetted respectively, specifically:
The state reset function of being carried using SSD is controlled the SSD needed to be reset and carries out self reset respectively；Or
It is resetted respectively by the SSD that RAID control needs to be reset.
9. device as claimed in claims 6 or 7, which is characterized in that the processor is also used to: described instruction is executed, in real time,
Timing or the reset moment for being periodically detected in the RAID each SSD for including, and recorded.
10. device as claimed in claim 8, which is characterized in that the processor is also used to: executing described instruction, in real time, determine
When or be periodically detected in the RAID reset moment of each SSD for including, and recorded.
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| CN112306747B (en) * | 2020-09-29 | 2023-04-11 | 新华三技术有限公司合肥分公司 | RAID card fault processing method and device |
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| CN102301339A (en) * | 2009-04-21 | 2011-12-28 | 国际商业机器公司 | Apparatus and method for controlling a solid state disk (SSD) device |
| CN103019870A (en) * | 2012-12-14 | 2013-04-03 | 大唐移动通信设备有限公司 | Method and communication equipment for processing reset signal |
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| CN101676872A (en) * | 2008-09-19 | 2010-03-24 | 刘杰 | Structure of solid state disk and method for accelerating initialization thereof |
| CN102301339A (en) * | 2009-04-21 | 2011-12-28 | 国际商业机器公司 | Apparatus and method for controlling a solid state disk (SSD) device |
| CN103180908A (en) * | 2010-11-29 | 2013-06-26 | 英特尔公司 | Method and apparatus for improving endurance of flash memories |
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