CN110989938A - Fault disk identification method, device, equipment and computer readable storage medium - Google Patents
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Abstract
The invention discloses a method, a device, equipment and a computer readable storage medium for identifying a fault disk, wherein the method comprises the following steps: acquiring an error reported by a disk to a cluster management system, if the error belongs to a preset error, determining that the error is a target error, taking the disk with the error as a target disk, and recording information of the target error of the target disk as historical information to an error information module, otherwise, returning information which cannot process the error to the cluster management system; and if the recovery is failed, judging whether the historical information of the target disk with the target error in the error information module conforms to the rule of the fault disk, if so, sending out early warning information that the target disk is the fault disk, and if not, determining that the target disk can be continuously used. Therefore, the utilization rate of the disk can be improved, and the cost of disk removal is reduced.
Description
Technical Field
The present invention relates to the field of storage cluster technologies, and in particular, to a method, an apparatus, a device, and a computer-readable storage medium for identifying a failed disk.
Background
The traditional disk state monitoring function in the storage system completely depends on the disk itself to manage the SCSI protocol for error management. In the error management mode, as long as the disk has errors, the cluster management system can judge the fault of the whole disk, so that the disk is removed or replaced; however, more times, the magnetic disk is likely to be only a certain sector with errors, and the whole magnetic disk cannot be used, so that the whole magnetic disk is directly removed and replaced, the replacement cost of the magnetic disk is increased, and the utilization rate of the magnetic disk is reduced; and operations such as migration and backup of data in the disk are required before the whole disk is removed and replaced, which further increases the cost.
In summary, the scheme for implementing the disk error handling in the prior art has the problems of high cost and low disk utilization rate.
Disclosure of Invention
The invention aims to provide a method, a device and equipment for identifying a fault disk and a computer readable storage medium, which can solve the problems of high replacement cost and low disk utilization rate of a scheme for realizing disk error processing in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme:
a faulty disk identification method, comprising:
acquiring an error reported by a disk to a cluster management system, if the error belongs to a preset error, determining that the error is a target error, taking the disk with the error as a target disk, and recording information of the target error of the target disk as historical information to an error information module, otherwise, returning information which cannot process the error to the cluster management system;
and if the recovery is failed, judging whether the historical information of the target disk with the target error in the error information module conforms to the rule of the fault disk, if so, sending out early warning information that the target disk is the fault disk, and if not, determining that the target disk can be continuously used.
Preferably, after the target error is determined, the method further includes:
and converting the format of the target error into a preset format, wherein the preset format is a structural body comprising the identification of the target disk, the occurrence time of the target error and the information of the target error.
Preferably, the method further comprises the following steps:
and judging whether a fault disk rule corresponding to the target error of the target disk exists in the rule module, if so, executing a step of judging whether the history information of the target error of the target disk in the error information module conforms to the fault disk rule, and if not, adding a mark which is not compared with the fault disk rule for the target error, and returning the target error to the cluster management system.
Preferably, the method further comprises the following steps:
if the rule module does not have a fault disk rule corresponding to the target error of the target disk, writing the information of the target error of the target disk into a log;
outputting an instruction indicating a fault disk rule of a target error of a target disk based on log setting from the outside;
and receiving a fault disk rule of a target disk with a target error, which is input from the outside, and adding the fault disk rule into the rule module.
Preferably, the history information includes correspondence between the disk, the error and the time when the error occurs, and the rule of the failed disk includes correspondence between the error, the time period when the error occurs and the total number of times of the error occurrence;
correspondingly, judging whether the history information of the target error of the target disk in the error information module conforms to the rule of the fault disk or not comprises the following steps:
determining a time period of the target error of the target disk and the total times in the time period based on the historical information of the target error of the target disk in the error information module;
and judging whether the time period of the target disk with the target error and the total times in the time period accord with the total times of the target error in the corresponding time period in the corresponding fault disk rule or not.
Preferably, the error recovery of the target error includes:
if the error type of the target error is a hardware error, resetting the target disk, and executing a command corresponding to the target error after the resetting is completed;
if the error type of the target error is a software error, executing a command corresponding to the target error or delaying the execution of the command corresponding to the target error or resetting the target disk when the target disk is in a normal working stage, determining that the target error cannot be recovered when the target disk is in an abnormal working stage, and delaying the execution of the command corresponding to the target error when the target disk is in an initialization stage, a formatting stage or an upgrading stage.
Preferably, after performing error recovery on the target error, the method further includes:
and if the error recovery fails, returning to the step of executing the error recovery of the target error until the number of times of executing the error recovery of the target error reaches the corresponding number threshold, and executing the step of judging whether the historical information of the target error of the target disk in the error information module conforms to the rule of the fault disk.
A faulty disk identification device comprising:
a determination module configured to: acquiring an error reported to a cluster management system by a disk, if the error belongs to a preset error, determining the error as a target error, and taking the disk with the error as a target disk, otherwise, returning information incapable of processing the error to the cluster management system;
a recording module to: recording the information of the target error of the target disk as historical information into an error information module;
a processing module to: and if the recovery is failed, judging whether the historical information of the target disk with the target error in the error information module conforms to the rule of the fault disk, if so, sending out early warning information that the target disk is the fault disk, and if not, determining that the target disk can be continuously used.
A faulty disk identification device comprising:
a memory for storing a computer program;
a processor for implementing the steps of the method for identifying a faulty disc as described in any one of the above when executing the computer program.
A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for faulty disc identification as defined in any one of the preceding claims.
According to the technical scheme, if the error is a preset error, namely the error is an error capable of being processed correspondingly, the error is recovered, namely the error is attempted to be recovered, if the error can be recovered successfully, the error is a recoverable error and is recovered, the magnetic disk is determined to be capable of being used continuously, otherwise, whether the historical occurrence condition of the error meets the preset fault disk rule or not is judged, the early warning information that the magnetic disk is the fault disk is sent out under the condition that the error meets the preset fault disk rule, otherwise, the magnetic disk is considered to be capable of being used continuously, the magnetic disk is reserved when the magnetic disk is capable of being used continuously, and the magnetic disk is considered to be the fault disk after the magnetic disk is determined to be incapable of being used continuously; therefore, through the identification modes of error recovery and whether the error history occurrence conditions accord with the rules of the failed disk, the error of the disk can be prevented from being a recoverable error, but the condition that the disk is judged to be the failed disk occurs, the condition that part of the disk can be used but the disk is judged to be the failed disk occurs, the accuracy of identifying the failed disk is effectively improved, the utilization rate of the disk is improved, the fault tolerance of a storage system is improved, and the cost caused by disk rejection and the like is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a method for identifying a failed disk according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating processing of an error occurring in a magnetic disk in a method for identifying a failed disk according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating information recorded in an error information module in a method for identifying a failed disc according to an embodiment of the present invention;
fig. 4 is a schematic diagram of information recorded in a rule module in a method for identifying a failed disc according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a faulty disk identification apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a flowchart of a method for identifying a failed disk according to an embodiment of the present invention is shown, where the method includes:
s11: and acquiring an error reported to the cluster management system by the disk, if the error belongs to a preset error, determining that the error is a target error, taking the disk with the error as a target disk, and recording information of the target error of the target disk as historical information into an error information module, otherwise, returning information which cannot process the error to the cluster management system.
The execution main body of the fault disk identification method provided by the embodiment of the invention is a corresponding fault disk identification device, the fault disk identification device can be specifically a judgment engine, the judgment engine can be embedded into a cluster management system to operate, but is a newly-added part capable of operating independently, if a disk has an error, the disk reports the error to the cluster management system, before the disk is removed, the judgment engine acquires the error and performs corresponding processing on the error, and then determines whether the disk can be continuously used or not based on the result obtained by the processing, if the disk can be continuously used, the error is ignored, otherwise, a disk removal command corresponding to early warning information and/or removing the disk with the error is sent; a schematic diagram of processing an error occurring in a disk at this time can be shown in fig. 2; the following describes the execution subject of the faulty disk identification method as a determination engine.
In this embodiment, the target error and the target disk may be any error and corresponding disk, specifically, after the cluster management system obtains an error reported by the disk through the SCSI protocol, the error obtained by the cluster management system is determined as the target error, specifically, the judgment engine automatically sends the cluster management system to obtain the error obtained by the cluster management system, or the cluster management system sends the obtained error to the judgment engine. In addition, in this embodiment, not all errors may be processed by the determination engine, so after acquiring an error occurring in the disk, it may be determined whether the error belongs to a preset error, and if so, the error is subsequently processed, otherwise, the cluster management system is notified that the error cannot be processed, so that the cluster management system performs corresponding processing on the error. Wherein, the preset error can be set according to the actual requirement, specifically, a range containing the error occurrence object, the error type and the error information keyword can be defined, the error occurrence object, the error type and the error information keyword can be processed by the judgment engine only when the error occurrence object, the error type and the error information keyword of the error occur in the range, if the error occurrence object is a disk, therefore, the error can not be processed when the error generating object is a fan or a fan lamp, the error type is defined by the standard SCSI (Small Computer Systems Interface) protocol, other errors which do not belong to the error type defined by the standard SCSI protocol cannot be processed, the error information key is the key of the error type defined by the standard SCSI protocol, other errors that are not of the type defined by the standard SCSI protocol cannot be handled. Therefore, the errors needing to be processed by the judgment engine are all corresponding errors of the disk in the mode, so that the judgment on whether the disk can be continuously used is realized.
Adding information corresponding to the target error of the target disk as historical information into an error information module; the error information may be set according to actual needs, specifically, the error information may include an identifier of a disk in which an error occurs, time when the error occurs, additional information of the error (such as an operation causing the disk to have the error), and the like. In addition, the error information module is used for storing history information, namely information of errors occurring in the disk each time, so that basis can be provided when whether the disk corresponding to the errors can be continuously used or not needs to be judged.
S12: and if the recovery is failed, judging whether the historical information of the target disk with the target error in the error information module conforms to the rule of the fault disk, if so, sending out early warning information that the target disk is the fault disk, and if not, determining that the target disk can be continuously used.
After the target disk and the target error are determined, the target error can be recovered, and the method for recovering the target error can include re-executing the command corresponding to the target error and/or resetting the target disk; specifically, the re-executing of the command corresponding to the target error is to re-operate the command causing the disk error (when the disk error occurs when the command corresponding to the operation is executed for the disk, the command is considered to be the command causing the disk error), if the disk error occurs when the READ command is executed, the READ command is considered to be the command causing the disk error, and at this time, the READ command is executed once, wherein common commands include a READ command READ, a WRITE command WRITE, a VERIFY command VERIFY, and the like; resetting the destination disk is to reboot or reformat the destination disk, etc. It should be noted that when a large number of commands corresponding to operations such as reading and writing are performed on a disk, a temporary failure of a certain command may easily occur, and at this time, an error occurs in the disk, but a command that fails to be operated again or the disk may be reset to be normal, so that the misjudgment rate may be reduced by this way.
If the error can not be recovered, whether the magnetic disk can be continuously used or not can be determined by judging whether the historical information of the target error of the target magnetic disk in the error information module conforms to the rule of the fault disk or not. All history information about the target error can be inquired from the error information module, so that whether the target disk needs to be removed or not is determined based on the history information about the target error, specifically, whether the history information about the target error meets a corresponding fault disk rule or not can be judged, if yes, the target disk needs to be removed, and if not, the target disk can be continuously used. The fault disk rule is a condition that the corresponding disk cannot be used continuously, namely the fault disk rule is obtained by summarizing the condition that a worker cannot be used continuously on the basis of the condition that the corresponding disk cannot be used continuously when the fault occurs historically, so that if the historical information of the target error meets the fault disk rule, the target disk cannot be used continuously, otherwise, the target disk still has an area capable of being used continuously, and the target disk is not removed. In addition, the failed disk rule has a corresponding relationship with the error of the disk and the disk in which the error occurs, so that the failed disk rule can meet the characteristic that the corresponding disk in which the error occurs, and further, the result of whether the disk in which the error occurs needs to be removed is determined based on the failed disk rule is more accurate.
In addition, when judging whether the history information of the target error of the target disk in the error information module conforms to the rule of a failed disk, the error in the present application may refer to the error itself, or may refer to the error type of the error, specifically, if the error refers to the error type of the error, the corresponding error type may be determined to be the error type of the error based on the error code of the error and the error code additional information based on the protocol of the standard storage system, and the error type may include a hardware error, a media error, and the like.
According to the technical scheme, if the error is a preset error, namely the error is an error capable of being processed correspondingly, the error is recovered, namely the error is attempted to be recovered, if the error can be recovered successfully, the error is a recoverable error and is recovered, the magnetic disk is determined to be capable of being used continuously, otherwise, whether the historical occurrence condition of the error meets the preset fault disk rule or not is judged, the early warning information that the magnetic disk is the fault disk is sent out under the condition that the error meets the preset fault disk rule, otherwise, the magnetic disk is considered to be capable of being used continuously, the magnetic disk is reserved when the magnetic disk is capable of being used continuously, and the magnetic disk is considered to be the fault disk after the magnetic disk is determined to be incapable of being used continuously; therefore, through the identification modes of error recovery and whether the error history occurrence conditions accord with the rules of the failed disk, the error of the disk can be prevented from being a recoverable error, but the condition that the disk is judged to be the failed disk occurs, the condition that part of the disk can be used but the disk is judged to be the failed disk occurs, the accuracy of identifying the failed disk is effectively improved, the utilization rate of the disk is improved, the fault tolerance of a storage system is improved, and the cost caused by disk rejection and the like is reduced.
It should be noted that, when recovering the error, the target error may be roughly classified, that is, the error generation stage and the error type of the target error are determined; the error generation stage refers to a state of the disk where the error occurs, and may include a stage of normal operation of the disk, a stage of initialization of the disk, a stage of formatting of the disk, a stage of upgrading of the disk, and the like, where the error type is a type of a command corresponding to the error, and may include a read command, a write command, a check command, and the like; specifically, after the error occurrence stage and the error type of the target error are determined, the target error may be error-recovered based on the error occurrence stage and the error type, and the method for error-recovering the target error based on the error occurrence stage and the error type may be determined in advance based on the corresponding relationship, that is, the corresponding relationship between the error occurrence stage, the error type, and the method for error-recovering the target error is set in the corresponding relationship, so as long as the error occurrence stage and the error type are known, the method for error-recovering the target error corresponding to the error occurrence stage and the error type may be determined based on the corresponding relationship, and then the determined method is used for error-recovering the target error; the corresponding relation can be obtained by workers based on experience, so that the error recovery mode of the target error is consistent with the error generation stage and the error type of the target error, and the error recovery of the target error can be realized in a correct mode to a certain extent. In addition, when the method of error recovery for the target error corresponding to the error occurrence stage and the error type is determined based on the correspondence, if the method of error recovery for the target error corresponding to the error occurrence stage and the error type is not found, it is described that the attempt to recover for the target error cannot be performed, and therefore, the step of determining whether the history information of the target error occurring in the target disk in the error information module conforms to the failed disk rule may be performed.
When the warning information that the disk is a failed disk is finally sent, the warning information may include information of an error class to which the target error belongs, that is, the error class to which the target error belongs is determined based on a preset classification rule, and the information of the error class is carried in the warning information and sent. Specifically, for convenience of processing a failed disk, an error class to which a target error belongs may be determined based on a preset classification rule, where the classification of the target error is to determine the error class to which the target error belongs by combining an object in which the error occurs, time when the error occurs, and the number of times of the error occurrence (which may also include a specific sector position where the error occurs) on the basis of determining an error occurrence stage and an error type of the target error, so that an end or a person acquiring the warning information can intuitively know that the target error occurs in the target disk. The error class determined to correspond to the information of the target error may be determined based on a preset error classification rule, that is, a correspondence relationship between the information of the error (which may include an error occurrence stage, an error type, an error occurrence target, an error occurrence time, an error occurrence frequency, and the like) and the error class to which the error belongs may be set in the error classification rule in advance, and after the information of the error is determined, the error class to which the error corresponds may be determined based on the correspondence relationship (which may be set based on the SCSI error classification). The error class may specifically include a media error, a hardware media error, an invalid field in the command, a command conflict, a failure of the command due to offline of the disk, a fact that the operation object does not belong to the current controller, and the like.
In a specific implementation manner, the error classification may be implemented based on a SCSI protocol, specifically, the SCSI protocol includes a content indication Condition, a SCSI detection data response command is defined in the content indication Condition, and the SCSI detection data response command includes a Request Sense command, a field corresponding to the command can provide detailed information of the error, as shown in table 1, at this time, values of the field include 0 to 9, and a to F; the Error classes obtained by classification correspondingly comprise No Sense, Soft Error, Recoverd Error, Not Ready, Mediumerror, Hardware Error, Illegal Request, unit attention, Data Protect, Blank Check, Vendor Specific, Copy isolated, isolated Command, Volume Overflow, Miscompare and complete, and the text part is corresponding detailed information, so that the Error class corresponding to the Error is quickly determined based on the SCSI protocol, and the condition of the fault disc is conveniently known.
TABLE 1
The method for identifying a failed disk provided by the embodiment of the present invention may further include, after determining that the target error is incorrect:
and converting the format of the target error into a preset format, wherein the preset format is a structural body comprising the identification of the target disk, the occurrence time of the target error and the information of the target error.
It should be noted that, in the embodiment of the present invention, before processing an error, the error may be correspondingly preprocessed, including parsing, identifying, and classifying the error, and finally, the error information reported by the disk is converted into an error that can be recognized by the determination engine, so that the determination engine can process the error. Specifically, the preprocessing may include merging of instructions belonging to the same kind of error information, the original SCSI error information corresponding to the error has many contents defined in the standard document, but may merge commands belonging to the same operation type but different operation units into one command, such as a Read command, and for the SCSI standard protocol, depending on the size of each logical operation unit, there may be three formats of Read _6, Read _10, and Read _16, and for these commands belonging to the same operation type but different operation units, merge and process them into the Read command uniformly. The errors can also be grouped into a corresponding data structure, the data structure includes the identification of the disk where the error occurred, the time when the error occurred, and the error information may include the specific location where the error occurred, the state of the disk where the error occurred, etc. (disk a, error time, error information), so as to facilitate corresponding processing of the error.
The method for identifying the fault disk provided by the embodiment of the invention can further comprise the following steps:
and judging whether a fault disk rule corresponding to the target error of the target disk exists in the rule module, if so, executing a step of judging whether the history information of the target error of the target disk in the error information module conforms to the fault disk rule, and if not, adding a mark which is not compared with the fault disk rule for the target error, and returning the target error to the cluster management system.
It should be noted that there may be a case that the rule module does not include a failed disk rule corresponding to the target error of the target disk, so before determining whether the history information of the target error of the target disk in the error information module conforms to the corresponding failed disk rule, it may also be determined whether a failed disk rule corresponding to the target error of the target disk exists in the rule module, if yes, the step of determining whether the history information of the target error of the target disk in the error information module conforms to the corresponding failed disk rule and the subsequent steps are directly executed, otherwise, it cannot be determined whether the history information of the target error of the target disk in the error information module conforms to the corresponding failed disk rule, therefore, a flag that the target error is not compared with the corresponding failed disk rule needs to be added to the target error, and then the target error is returned to the cluster management system, therefore, the cluster management system can know that the target error is an unprocessed disk error, and then the cluster management system performs corresponding processing on the target error, so that the function of judging the engine is improved.
The method for identifying the fault disk provided by the embodiment of the invention can further comprise the following steps:
if the rule module does not have a fault disk rule corresponding to the target error of the target disk, writing the information of the target error of the target disk into a log;
outputting an instruction indicating a fault disk rule of a target error of a target disk based on log setting from the outside;
and receiving a fault disk rule of a target disk with a target error, which is input from the outside, and adding the fault disk rule into the rule module.
It should be noted that the failed disk rule in the rule module is a continuously accumulating process, and therefore, if the failed disk rule corresponding to the target error of the target disk does not exist in the rule module, the information of the target error of the target disk can be written into the log, so that an external worker sets the corresponding failed disk rule based on the information in the log for use, thereby realizing the continuous accumulation of the failed disk rule in the rule module, further ensuring the subsequent effective processing of the condition that more disks have disk errors, and further improving the function of the judgment engine. In addition, after an instruction indicating that the outside sets the corresponding fault disk rule based on the log is output, the corresponding fault disk rule input by the outside can be acquired in a short time, and the outside worker can also think that the information in the log is not enough to acquire the corresponding fault disk rule, so that the corresponding fault disk rule input by the outside can be acquired after a long time.
According to the fault disc identification method provided by the embodiment of the invention, historical information can comprise corresponding relations among a magnetic disc, errors and error occurrence time, and a fault disc rule comprises corresponding relations among the errors, error occurrence time periods and total error occurrence times;
correspondingly, judging whether the history information of the target error of the target disk in the error information module conforms to the rule of the failed disk may include:
determining a time period of the target error of the target disk and the total times in the time period based on the historical information of the target error of the target disk in the error information module;
and judging whether the time period of the target disk with the target error and the total times in the time period accord with the total times of the target error in the corresponding time period in the corresponding fault disk rule or not.
It should be noted that the history information may include a corresponding relationship between a disk (an object where a disk error occurs), a disk error (which may be a disk error itself or a type of a disk error), and a disk error occurrence time (a time when a disk with a disk error reports a disk error), specifically, what is recorded in the error information module may be an identifier of a disk, a name of a disk error, and a disk error occurrence time, and the determination engine records corresponding information as history information every time the disk error is acquired, in the error information module, so as to facilitate tracking of an error log at a later stage, for example, a time period where a target disk with a target error occurs and a total number of times of occurrence of the target error in the time period are determined by the history information; in the corresponding failed disk rule, the disk is determined to be removed when the total number of times of certain errors of a certain disk in a certain time period reaches a corresponding threshold, otherwise, the disk is determined not to be removed, so that the time period when the disk is required to be removed and the corresponding threshold can be recorded in the failed disk rule, and the failed disk rule is obtained by counting the influence of a large number of time periods and times of disk errors on the storage management system. The error information module and the rule module may be an information table and a failed disk rule table, as shown in fig. 3 and 4, which are schematic diagrams of information recorded in the error information module and the rule module, respectively, where an error occurrence disk ID is an identifier of a disk in which a disk error occurs, an error classification is a disk error, and an error occurrence time is a time point at which a disk error occurs, so that the total number of times of occurrence of a certain disk error in a certain time period can be counted; if the error is classified as a medium error, the time period rule is 24 hours, and the time rule is 6 times, it is indicated that 6 medium errors occur in 24 hours in a certain disk, and the disk can be determined to be required to be removed; therefore, the information acquisition speed can be higher by inquiring the required information in a table look-up mode, and the speed for judging whether the historical information of the target error of the target disk in the error information module conforms to the corresponding fault disk rule is higher; that is, the judgment engine in the application realizes the accurate screening of the disks to be rejected by comparing the two tables, thereby improving the fault tolerance of the disks.
The disk elimination determination method provided in the embodiment of the present invention adds, as history information, information corresponding to the current occurrence of the target error in the target disk to a preset error information module, and may include:
and judging whether the target disk has the over-target error or not based on the historical information in the error information module, if so, adding the information corresponding to the target error of the target disk, which occurs at the current time, as the historical information to the position, corresponding to the target error of the target disk, in the error information module, and if not, adding the information corresponding to the target error of the target disk, which occurs at the current time, as the historical information to the position, corresponding to the target disk, in the error information module.
In order to make the recorded historical information regular and convenient to query, in this embodiment, the positions of different disk errors of the same disk recorded in the error information module correspond to each other, and the positions of different error occurrence times of the same disk error of the same disk correspond to each other, so that when the information corresponding to the target error occurring in the target disk at this time is taken as historical information and added to the preset error information module, whether the target disk, the target error and the corresponding error occurrence time have been recorded in the error information module may be determined in advance, if so, the target disk has already occurred with the target error, and at this time, information only including the error occurrence time or including the target error and the error occurrence time at the same time is added to the recorded target disk having the target error; if not, indicating that the target disk has no target error, if the target disk has information of other errors in the error information module, adding a record which simultaneously comprises a target error name and target error occurrence time or simultaneously comprises a target disk identifier, a target error name and target error occurrence time to the recorded record of other errors in the target disk, and if the error information module has no information of other errors in the target disk, directly adding a record which simultaneously comprises the target disk identifier, the target error name and the target error occurrence time to a blank position in the table; specifically, as shown in fig. 3, the information arrangement rule in the error information module is convenient for query.
The method for identifying a failed disk, provided by the embodiment of the present invention, for performing error recovery on a target error, may include:
if the error type of the target error is a hardware error, resetting the target disk, and executing a command corresponding to the target error after the resetting is completed;
if the error type of the target error is a software error, executing a command corresponding to the target error or delaying the execution of the command corresponding to the target error or resetting the target disk when the target disk is in a normal working stage, determining that the target error cannot be recovered when the target disk is in an abnormal working stage, and delaying the execution of the command corresponding to the target error when the target disk is in an initialization stage, a formatting stage or an upgrading stage.
It should be noted that errors may occur in the disk, the power supply, and the chassis, and the errors in this embodiment refer to errors occurring in the disk; the execution target error corresponds to a command including immediate execution and delayed execution, and the reset target disk can be divided into resetting of a protocol in a software layer and restarting of an object in a hardware layer, in this embodiment, the specific selection of which reset to select by the reset target disk can be set according to actual needs, for example, one of two resets can be included, or two resets can be included at the same time; specifically, when performing error recovery on a target error based on an error occurrence stage and an error type, it may be determined whether the error type is a hardware error or a software error (both the software error and the hardware error have the same meaning as a corresponding concept in the prior art, and are not described herein in detail), and if the error type is a hardware error, a step of determining a target disk as a failed disk may be directly performed without recovering the error, or a step of resetting the target disk may be selected, and a command corresponding to the target error is performed after the resetting is completed (the selected recovery error may be a backup policy for a failure transfer in a storage system), so as to attempt to achieve recovery of the hardware error in this way; if the error type is a software error, determining the working state of the target disk (namely a target error generation stage), if the target disk is in a normal working stage, considering that the target disk is healthy, and the error probability is low, so that the target error may be only sporadic failure, and one of immediately re-executing a command corresponding to the target error, delaying execution of the target error and resetting the target disk can be selected to be realized, certainly, when one of the error recovery modes is executed completely but the target error still exists, the second error recovery mode can be continuously executed, and further, when the second error recovery mode is executed completely but the target error still exists, the third error recovery mode is continuously executed, so that the successful realization of the error recovery is ensured to a certain extent through the mode; if the target disk is in an initialization, formatting or upgrading stage, the probability of operation error of the target disk is high, and at this time, if the target error corresponding command is directly re-executed, the probability of error is still high, so that the target error corresponding command can be re-executed after a delay of several seconds, and if the target disk is in the initialization, upgrading or formatting stage, which is equivalent to the target disk being in the reset stage, the command for resetting the target disk is usually not executed any more, otherwise, the target disk initialization, upgrading or formatting failure can be caused; if the target disk is in the stage of abnormal operation, the target error cannot be recovered because the target disk operates abnormally.
For example, if an error is reported by the disk, and the erroneous command is a read command, and the disk is in an overall formatting state at this time, the severity of the error is considered to be low, because the read command does not respond temporarily or responds very slowly when the disk is formatted, the command can be retried after waiting for a period of time; if an error is reported by the disk and the error command is a command of read operation, the state of the disk is normal at this time, the error is considered not unexpected, the command can be retried immediately, if the read operation is normal within three retries, the error is considered to be recovered normally, and if the three times of command retries fail, the error is considered to be recovered temporarily; if an error is reported by the disk and the error command is a read operation command, but the state of the disk is abnormal, the error is considered to be unrecoverable, and the error recovery operation is directly skipped.
In conclusion, according to the method and the device, when the error types and the error occurrence stages are different, the corresponding error recovery is realized by adopting different strategies, so that the effective recovery of the errors can be ensured to a certain extent, and meanwhile, the waste of corresponding resources can be avoided.
In addition, the specific implementation manner of performing error recovery on the target error based on the error generation stage and the error type can also be other manners set according to actual needs, and is within the protection scope of the invention; the specific delay time can be set based on actual needs when the target error corresponding command is delayed to be executed, the delay time corresponding to different commands can be different, and the delay time can be set by workers based on experience, so that the setting of the delay time accords with the characteristics of the command, and further the effective recovery of the error is realized.
The method for identifying a failed disk provided in the embodiment of the present invention may further include, after performing error recovery on the target error:
and if the error recovery fails, returning to the step of executing the error recovery of the target error until the number of times of executing the error recovery of the target error reaches the corresponding number threshold, and executing the step of judging whether the historical information of the target error of the target disk in the error information module conforms to the rule of the fault disk.
Wherein, the time threshold can be set according to actual needs, such as 3 times; after the error recovery of the target error fails, returning to the step of executing the error recovery of the target error, further judging whether the error recovery of the target error is successful or not, if the error recovery is successful, determining that the target disk can be continuously used, if the error recovery is failed, returning to the step of executing the error recovery of the target error until the number of times of executing the error recovery of the target error reaches a corresponding number threshold, if the error recovery is still failed, executing the step of judging whether the history information of the target error of the target disk in the error information module conforms to the rule of the failed disk, and if the error recovery is successful, executing the step of determining that the target disk can be continuously used; therefore, through the setting of the number of times of executing error recovery, certain errors which can be recovered after a plurality of attempts can be successfully recovered, so that the accuracy of identifying the failed disk is further improved, and resource waste caused by the fact that the errors which cannot be recovered even if a plurality of attempts are performed and the errors are subjected to the plurality of attempts can be avoided.
It should be noted that, when determining the number of times of performing error recovery on the target error, a corresponding variable may be set when the target error occurs, a value of the variable is initialized to 0, and the value of the variable is incremented by 1 each time the step of performing error recovery on the target error is performed, so that the number of times of performing the step of performing error recovery on the target error can be directly known through the value of the variable.
The method for identifying a failed disk provided by the embodiment of the present invention may further include, after determining the target disk and the target error:
and counting the frequency of the target error of the target disk in a preset time period closest to the current moment, if the frequency is greater than the corresponding frequency threshold, returning the information that the frequency of the target error of the target disk is greater than the corresponding frequency threshold to the cluster management system, and otherwise, executing the step of recovering the target error.
It should be noted that both the frequency threshold and the preset time period can be set according to actual needs, the preset time period can be set to half an hour, one hour, etc., and the frequency threshold can be set to fifty percent, sixty percent, etc.; after the target disk and the target error are determined, dividing the total number of times of the target error occurring in the preset time period nearest to the current moment by the preset time period to obtain a corresponding frequency, if the frequency is greater than a corresponding frequency threshold, it is indicated that the target error occurring in the target disk is frequent, at this time, the target disk itself or other related devices may have problems, even if the target error can be recovered, the error may continue to occur subsequently, so in order to avoid frequent occurrence of the error, related steps such as recovering the target error are not performed any more, but information that the frequency of the target error occurring in the target disk is greater than the corresponding frequency threshold is returned to the cluster management system, so that the cluster management system performs corresponding processing, or the cluster management system sends the information to a terminal corresponding to a worker, to be processed correspondingly by the staff; if the frequency is not greater than the corresponding frequency threshold, the target disk is indicated to have a normal frequency of the target error, and therefore, the subsequent corresponding steps of recovering the target error and the like are continuously executed.
The method has the advantages that the judgment engine with reasonable design does not distinguish errors reported to the bottom layer any more, a processing mode of eliminating the magnetic disk is adopted, and errors are screened according to the rules of recovering the errors and the fault disk, so that only the actual operation of the whole magnetic disk is influenced, or the errors influencing the faults of the whole cluster can cause the generation of corresponding magnetic disk elimination commands and error alarm events; the method has the advantages of reducing the false alarm rate of the disk, improving the accuracy and reliability of disk management, improving the reliability of the whole storage system, reducing the economic consumption caused by the migration and backup of disk data, disk removal and replacement and the like due to disk misjudgment, and reducing the cost caused by the economic loss of users. In addition, the early warning information is generated, so that the disk fault can be effectively early warned, maintenance personnel can timely process the fault disk data, and the reliability of the whole storage system is further improved.
An embodiment of the present invention further provides a device for identifying a faulty disk, as shown in fig. 5, where the device may include:
a first determining module 11, configured to: acquiring an error reported to a cluster management system by a disk, if the error belongs to a preset error, determining the error as a target error, and taking the disk with the error as a target disk, otherwise, returning information incapable of processing the error to the cluster management system;
a recording module 12 for: recording the information of the target error of the target disk as historical information into an error information module;
a processing module 13 for: and if the recovery is failed, judging whether the historical information of the target disk with the target error in the error information module conforms to the rule of the fault disk, if so, sending out early warning information that the target disk is the fault disk, and if not, determining that the target disk can be continuously used.
The device for identifying a faulty disk according to the embodiment of the present invention may further include:
a conversion module to: and after the target error is determined, converting the format of the target error into a preset format, wherein the preset format is a structural body comprising the identification of the target disk, the occurrence time of the target error and the information of the target error.
The device for identifying a faulty disk according to the embodiment of the present invention may further include:
a second determination module configured to: and judging whether a fault disk rule corresponding to the target error of the target disk exists in the rule module, if so, executing a step of judging whether the history information of the target error of the target disk in the error information module conforms to the fault disk rule, and if not, adding a mark which is not compared with the fault disk rule for the target error, and returning the target error to the cluster management system.
The device for identifying a faulty disk according to the embodiment of the present invention may further include:
an update module to: if the rule module does not have a fault disk rule corresponding to the target error of the target disk, writing the information of the target error of the target disk into a log; outputting an instruction indicating a fault disk rule of a target error of a target disk based on log setting from the outside; and receiving a fault disk rule of a target disk with a target error, which is input from the outside, and adding the fault disk rule into the rule module.
According to the fault disc identification device provided by the embodiment of the invention, historical information comprises corresponding relations among magnetic discs, errors and error occurrence time, and a fault disc rule comprises corresponding relations among the errors, error occurrence time periods and total error occurrence times;
correspondingly, the processing module may include:
a determination unit configured to: determining a time period of the target error of the target disk and the total times in the time period based on the historical information of the target error of the target disk in the error information module; and judging whether the time period of the target disk with the target error and the total times in the time period accord with the total times of the target error in the corresponding time period in the corresponding fault disk rule or not.
In an apparatus for identifying a failed disk provided in an embodiment of the present invention, a processing module may include:
a recovery unit to: if the error type of the target error is a hardware error, resetting the target disk, and executing a command corresponding to the target error after the resetting is completed; if the error type of the target error is a software error, executing a command corresponding to the target error or delaying the execution of the command corresponding to the target error or resetting the target disk when the target disk is in a normal working stage, determining that the target error cannot be recovered when the target disk is in an abnormal working stage, and delaying the execution of the command corresponding to the target error when the target disk is in an initialization stage, a formatting stage or an upgrading stage.
The device for identifying a faulty disk according to the embodiment of the present invention may further include:
a circulation module to: and after the target error is subjected to error recovery, if the error recovery fails, returning to the step of executing the error recovery of the target error until the number of times of executing the error recovery of the target error reaches a corresponding number threshold, and executing the step of judging whether the historical information of the target error of the target disk in the error information module conforms to the rule of the fault disk.
An embodiment of the present invention further provides a device for identifying a faulty disk, which may include:
a memory for storing a computer program;
a processor for implementing the steps of the method for identifying a faulty disc as described in any one of the above when executing the computer program.
The embodiment of the invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method for identifying a faulty disk can be implemented.
It should be noted that for the description of the relevant parts in the faulty disk identification apparatus, the device and the computer readable storage medium provided in the embodiments of the present invention, reference is made to the detailed description of the corresponding parts in the faulty disk identification method provided in the embodiments of the present invention, and details are not repeated herein. In addition, parts of the above technical solutions provided in the embodiments of the present invention that are consistent with the implementation principles of the corresponding technical solutions in the prior art are not described in detail, so as to avoid redundant description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for identifying a failed disk, comprising:
acquiring an error reported to a cluster management system by a disk, if the error belongs to a preset error, determining that the error is a target error, taking the disk with the error as a target disk, and recording information of the target error of the target disk as historical information into an error information module, otherwise, returning information incapable of processing the error to the cluster management system;
and performing error recovery on the target error, if the recovery is successful, determining that the target disk can be continuously used, if the recovery is failed, judging whether the historical information of the target disk with the target error in the error information module conforms to a fault disk rule, if so, sending out early warning information that the target disk is a fault disk, and if not, determining that the target disk can be continuously used.
2. The method of claim 1, wherein determining the destination error further comprises:
and converting the format of the target error into a preset format, wherein the preset format is a structural body comprising the identification of the target disk, the occurrence time of the target error and the information of the target error.
3. The method of claim 2, further comprising:
judging whether a fault disk rule corresponding to the target error of the target disk exists in a rule module, if so, executing a step of judging whether the historical information of the target error of the target disk in the error information module conforms to the fault disk rule, if not, adding a mark which is not compared with the fault disk rule for the target error, and returning the target error to the cluster management system.
4. The method of claim 3, further comprising:
if a fault disk rule corresponding to the target error of the target disk does not exist in the rule module, writing the information of the target error of the target disk into a log;
outputting an instruction for indicating the external fault disk rule for setting the target error of the target disk based on the log;
and receiving a fault disk rule of the target disk, which is input from the outside and has the target error, and adding the fault disk rule into the rule module.
5. The method of claim 4, wherein the historical information includes a correspondence between disks, errors and times at which the errors occurred, and the failed disk rule includes a correspondence between errors, time periods at which the errors occurred, and total number of times the errors occurred;
correspondingly, the step of judging whether the history information of the target error of the target disk in the error information module conforms to the rule of the failed disk includes:
determining the time period of the target error of the target disk and the total times in the time period based on the historical information of the target error of the target disk in the error information module;
and judging whether the time period of the target disk generating the target error and the total times in the time period accord with the total times of the target error in the corresponding time period in the corresponding fault disk rule or not.
6. The method of claim 5, wherein error recovering the destination error comprises:
if the error type of the target error is a hardware error, resetting the target disk, and executing a command corresponding to the target error after the resetting is completed;
if the error type of the target error is a software error, executing a command corresponding to the target error or delaying the execution of the command corresponding to the target error or resetting the target disk when the target disk is in a normal working stage, determining that the target error cannot be recovered when the target disk is in an abnormal working stage, and delaying the execution of the command corresponding to the target error when the target disk is in an initialization stage, a formatting stage or an upgrading stage.
7. The method of claim 6, wherein after performing error recovery on the destination error, further comprising:
and if the error recovery fails, returning to the step of executing the error recovery of the target error until the number of times of executing the error recovery of the target error reaches a corresponding number threshold, and executing the step of judging whether the historical information of the target error of the target disk in the error information module conforms to the rule of a failed disk.
8. A faulty disk identification device, characterized by comprising:
a determination module configured to: acquiring an error reported to a cluster management system by a disk, if the error belongs to a preset error, determining the error as a target error, and taking the disk with the error as a target disk, otherwise, returning information incapable of processing the error to the cluster management system;
a recording module to: recording the information of the target error of the target disk as historical information into an error information module;
a processing module to: and performing error recovery on the target error, if the recovery is successful, determining that the target disk can be continuously used, if the recovery is failed, judging whether the historical information of the target disk with the target error in the error information module conforms to a fault disk rule, if so, sending out early warning information that the target disk is a fault disk, and if not, determining that the target disk can be continuously used.
9. A faulty disk identification device, characterized by comprising:
a memory for storing a computer program;
a processor for implementing the steps of the method for identifying a faulty disc according to any one of claims 1 to 7 when executing said computer program.
10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method for identifying a faulty disk according to any one of claims 1 to 7.
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| CN201911287929.6A CN110989938A (en) | 2019-12-15 | 2019-12-15 | Fault disk identification method, device, equipment and computer readable storage medium |
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| CN201911287929.6A CN110989938A (en) | 2019-12-15 | 2019-12-15 | Fault disk identification method, device, equipment and computer readable storage medium |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111625185A (en) * | 2020-05-07 | 2020-09-04 | 苏州浪潮智能科技有限公司 | Method, system and related assembly for monitoring disk fault |
| CN112002370A (en) * | 2020-07-23 | 2020-11-27 | 烽火通信科技股份有限公司 | Method and device for identifying disk abnormity and distributed storage system |
| CN112527561A (en) * | 2020-12-09 | 2021-03-19 | 广州技象科技有限公司 | Data backup method and device based on Internet of things cloud storage |
| CN113672415A (en) * | 2021-07-09 | 2021-11-19 | 济南浪潮数据技术有限公司 | Disk fault processing method, device, equipment and storage medium |
| CN114675791A (en) * | 2022-05-27 | 2022-06-28 | 苏州浪潮智能科技有限公司 | Disk processing method and system and electronic equipment |
-
2019
- 2019-12-15 CN CN201911287929.6A patent/CN110989938A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111625185A (en) * | 2020-05-07 | 2020-09-04 | 苏州浪潮智能科技有限公司 | Method, system and related assembly for monitoring disk fault |
| CN112002370A (en) * | 2020-07-23 | 2020-11-27 | 烽火通信科技股份有限公司 | Method and device for identifying disk abnormity and distributed storage system |
| CN112002370B (en) * | 2020-07-23 | 2022-04-15 | 烽火通信科技股份有限公司 | Method and device for identifying disk abnormity and distributed storage system |
| CN112527561A (en) * | 2020-12-09 | 2021-03-19 | 广州技象科技有限公司 | Data backup method and device based on Internet of things cloud storage |
| CN113672415A (en) * | 2021-07-09 | 2021-11-19 | 济南浪潮数据技术有限公司 | Disk fault processing method, device, equipment and storage medium |
| CN114675791A (en) * | 2022-05-27 | 2022-06-28 | 苏州浪潮智能科技有限公司 | Disk processing method and system and electronic equipment |
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