CN111190775A - OSD (on Screen display) replacing method, system, equipment and computer readable storage medium - Google Patents
OSD (on Screen display) replacing method, system, equipment and computer readable storage medium Download PDFInfo
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- CN111190775A CN111190775A CN201911398199.7A CN201911398199A CN111190775A CN 111190775 A CN111190775 A CN 111190775A CN 201911398199 A CN201911398199 A CN 201911398199A CN 111190775 A CN111190775 A CN 111190775A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
- G06F11/2094—Redundant storage or storage space
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/0647—Migration mechanisms
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/067—Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
Abstract
The application discloses an OSD (on screen display) replacing method, system, equipment and a computer readable storage medium, which are applied to a distributed storage system and used for determining a failed OSD; determining a target PG corresponding to the failed OSD; in an OSD list of the target PG, marking the state of the faulted OSD as invalid; in the process of recalculating the PG distribution of the distributed storage system, acquiring an OSD list of the current PG, judging whether the OSD list of the current PG has an invalid OSD, if so, determining a target OSD based on a data distribution algorithm, and replacing the invalid OSD with the target OSD. The OSD replacement method, the system, the equipment and the computer readable storage medium mark the state of the failed OSD as invalid, and only the failed OSD can be replaced according to the invalid mark, so that the judgment amount of the OSD is reduced, and the replacement efficiency is improved.
Description
Technical Field
The present application relates to the field of storage technologies, and in particular, to an OSD replacing method, system, device, and computer-readable storage medium.
Background
In a distributed storage system, stored contents are cut according to a fixed size, and a piece of data with a fixed size is called an object, a PC (Placement Group) is an aggregation of a plurality of objects, the PC and the objects are corresponded by a consistent hash algorithm, and a PG corresponds to the plurality of objects. Each PG corresponds to an OSD (Object-based storage device) through a data distribution algorithm, one PG corresponds to a plurality of OSDs, and one OSD may have a plurality of PGs, so that when a certain OSD corresponding to a certain PG fails, in order to ensure that a cluster normally operates, the data distribution algorithm reselects all OSDs for the PG through a series of calculations, and at this time, not only all OSDs corresponding to the PG need to be replaced, but also data migration needs to be performed, so that the OSD replacement efficiency is low.
In summary, how to improve the OSD replacement efficiency is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
The application aims to provide an OSD replacement method which can solve the technical problem of how to improve the OSD replacement efficiency to a certain extent. The application also provides an OSD replacing system, an OSD replacing device and a computer readable storage medium.
In order to achieve the above purpose, the present application provides the following technical solutions:
an OSD replacement method is applied to a distributed storage system and comprises the following steps:
determining a failed OSD;
determining a target PG corresponding to the faulted OSD;
marking the state of the failed OSD as invalid in an OSD list of the target PG;
in the process of recalculating the PG distribution of the distributed storage system, acquiring an OSD list of the current PG, judging whether an OSD with an invalid state exists in the OSD list of the current PG, if so, determining a target OSD based on a data distribution algorithm, and replacing the invalid OSD with the target OSD.
Preferably, the marking the status of the failed OSD as invalid includes:
and replacing the identifier of the failed OSD as invalid.
Preferably, after the replacing the invalid OSD with the target OSD, the method further includes:
and generating and storing an OSD replacement log based on the failed OSD, the target PG and the target OSD.
Preferably, the replacing the invalid OSD with the target OSD includes:
replacing the information of the invalid OSD with the information of the target OSD in an OSD list of the current PG;
migrating the data of the invalid OSD to the target OSD;
and establishing and storing a corresponding relation between the target OSD and the current PG.
An OSD replacing system applied to a distributed storage system comprises:
the first determining module is used for determining the failed OSD;
a second determining module, configured to determine a target PG corresponding to the failed OSD;
a first marking module, configured to mark a status of the failed OSD as invalid in an OSD list of the target PG;
the first setting module is used for acquiring an OSD list of the current PG in the process of recalculating PG distribution of the distributed storage system, judging whether the OSD list of the current PG has an invalid OSD, if so, determining a target OSD based on a data distribution algorithm, and replacing the invalid OSD with the target OSD.
Preferably, the first setting module includes:
a first replacing unit, configured to replace the identifier of the failed OSD with an invalid identifier.
Preferably, the method further comprises the following steps:
and the first generation module is used for generating and storing an OSD replacement log based on the failed OSD, the target PG and the target OSD after the invalid OSD is replaced by the target OSD through the first setting module.
Preferably, the first setting module includes:
a first replacing unit, configured to replace, in an OSD list of a current PG, information of the invalid OSD with information of the target OSD;
a first migration unit, configured to migrate data of the invalid OSD to the target OSD;
and the first establishing unit is used for establishing and storing the corresponding relation between the target OSD and the current PG.
An OSD replacing device applied to a distributed storage system comprises:
a memory for storing a computer program;
a processor, configured to implement the steps of any of the OSD replacing methods described above when the computer program is executed.
A computer-readable storage medium for a distributed storage system, the computer-readable storage medium having a computer program stored thereon, the computer program, when executed by a processor, implementing the steps of any of the OSD replacing methods described above.
The OSD replacing method is applied to a distributed storage system and used for determining the fault OSD; determining a target PG corresponding to the failed OSD; in an OSD list of the target PG, marking the state of the faulted OSD as invalid; in the process of recalculating the PG distribution of the distributed storage system, acquiring an OSD list of the current PG, judging whether the OSD list of the current PG has an invalid OSD, if so, determining a target OSD based on a data distribution algorithm, and replacing the invalid OSD with the target OSD. According to the OSD replacement method, the state of the failed OSD is marked as invalid in the OSD list of the target PG, so that only the failed OSD can be replaced subsequently according to the invalid mark. The OSD replacement system, the OSD replacement equipment and the computer readable storage medium solve the corresponding technical problems.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, 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 an OSD replacing method according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an OSD replacing system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an OSD replacing apparatus according to an embodiment of the present application;
fig. 4 is another schematic structural diagram of an OSD replacing apparatus according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
Referring to fig. 1, fig. 1 is a flowchart illustrating an OSD replacing method according to an embodiment of the present disclosure.
The OSD replacing method provided by the embodiment of the application is applied to a distributed storage system, and can comprise the following steps:
step S101: the malfunctioning OSD is determined.
In practical application, the distributed storage system may determine the failed OSD, specifically, determine whether the OSD fails by performing performance detection on the OSD, and further determine the failed OSD.
Step S102: and determining a target PG corresponding to the failed OSD.
In practical application, after the faulty OSD is determined, the target PG corresponding to the faulty OSD can be determined. Specifically, the target PG corresponding to the failed OSD may be determined according to the correspondence between the OSD and the PG, and when the OSD stores the list of the PG corresponding to the failed OSD, the PG in the list of the failed OSD may be directly used as the target PG.
Step S103: in the OSD list of the target PG, the status of the malfunctioning OSD is marked as invalid.
In practical application, after the target PG corresponding to the failed OSD is determined, the state of the failed OSD may be marked as invalid in the OSD list of the target PG, so that the OSD failure is known according to the invalid mark.
Step S104: in the process of recalculating the PG distribution of the distributed storage system, acquiring an OSD list of the current PG, judging whether the OSD list of the current PG has an invalid OSD, if so, determining a target OSD based on a data distribution algorithm, and replacing the invalid OSD with the target OSD.
In practical application, after the state of the failed OSD is marked as invalid in the OSD list of the target PG, in order to ensure that the PG can work normally, the OSD list of the current PG may be obtained in the process of recalculating the PG distribution of the distributed storage system, and whether the OSD list of the current PG has the OSD with the invalid state is determined, if yes, the target OSD is determined based on a data distribution algorithm, and the invalid OSD is replaced by the target OSD, and it should be noted that the target OSD is a normal OSD.
The OSD replacing method is applied to a distributed storage system and used for determining the fault OSD; determining a target PG corresponding to the failed OSD; in an OSD list of the target PG, marking the state of the faulted OSD as invalid; in the process of recalculating the PG distribution of the distributed storage system, acquiring an OSD list of the current PG, judging whether the OSD list of the current PG has an invalid OSD, if so, determining a target OSD based on a data distribution algorithm, and replacing the invalid OSD with the target OSD. According to the OSD replacement method, the state of the failed OSD is marked as invalid in the OSD list of the target PG, so that only the failed OSD can be replaced subsequently according to the invalid mark.
When the method for replacing the OSD is applied to the distributed storage system, in the process of marking the state of the failed OSD as invalid, the identifier of the failed OSD can be replaced with the invalid identifier in order to conveniently mark the invalid of the failed OSD and conveniently view the mark of the OSD from the outside.
When the OSD replacement method provided by the embodiment of the application is applied to a distributed storage system, after invalid OSD is replaced by target OSD, an OSD replacement log can be generated and stored based on the failed OSD, the target PG and the target OSD. So as to restore the OSD replacement process according to the OSD replacement log in the following.
When the method for replacing the OSD is applied to the distributed storage system, in the process of replacing the invalid OSD by the target OSD, the information of the invalid OSD can be replaced by the information of the target OSD in the OSD list of the current PG; migrating the data of the invalid OSD to the target OSD; and establishing and storing a corresponding relation between the target OSD and the current PG.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an OSD replacing system according to an embodiment of the present application.
The OSD replacing system provided by the embodiment of the application is applied to a distributed storage system, and may include:
a first determining module 101, configured to determine that a malfunction has occurred;
a second determining module 102, configured to determine a target PG corresponding to the failed OSD;
a first marking module 103, configured to mark a status of a failed OSD as invalid in an OSD list of the target PG;
the first setting module 104 is configured to, in the process of recalculating PG distribution of the distributed storage system, obtain an OSD list of a current PG, determine whether an OSD in an invalid state exists in the OSD list of the current PG, determine, if the OSD exists, a target OSD based on a data distribution algorithm, and replace the invalid OSD with the target OSD.
The OSD replacing system provided by the embodiment of the application is applied to a distributed storage system, and the first marking module may include:
and a first replacing unit for replacing the identification of the failed OSD as invalid.
The OSD replacing system provided by the embodiment of the application is applied to a distributed storage system, and may further include:
and the first generation module is used for generating and storing an OSD replacement log based on the failed OSD, the target PG and the target OSD after the invalid OSD is replaced by the target OSD through the first setting module.
The OSD replacing system provided by the embodiment of the application is applied to a distributed storage system, and the first setting module may include:
the first replacement unit is used for replacing the information of the invalid OSD with the information of the target OSD in the OSD list of the current PG;
the first migration unit is used for migrating the data of the invalid OSD to the target OSD;
and the first establishing unit is used for establishing and storing the corresponding relation between the target OSD and the current PG.
The application also provides an OSD replacing device and a computer readable storage medium, which have the corresponding effects of the OSD replacing method provided by the embodiment of the application. Referring to fig. 3, fig. 3 is a schematic structural diagram of an OSD replacing apparatus according to an embodiment of the present application.
The OSD replacing device provided by the embodiment of the application comprises a memory 201 and a processor 202, wherein a computer program is stored in the memory 201, and the processor 202 executes the computer program to realize the following steps:
determining a failed OSD;
determining a target PG corresponding to the failed OSD;
in an OSD list of the target PG, marking the state of the faulted OSD as invalid;
in the process of recalculating the PG distribution of the distributed storage system, acquiring an OSD list of the current PG, judging whether the OSD list of the current PG has an invalid OSD, if so, determining a target OSD based on a data distribution algorithm, and replacing the invalid OSD with the target OSD.
The OSD replacing device provided by the embodiment of the application comprises a memory 201 and a processor 202, wherein a computer program is stored in the memory 201, and the processor 202 executes the computer program to realize the following steps: the identification of the malfunctioning OSD is changed to invalid.
The OSD replacing device provided by the embodiment of the application comprises a memory 201 and a processor 202, wherein a computer program is stored in the memory 201, and the processor 202 executes the computer program to realize the following steps: and after the invalid OSD is replaced by the target OSD, generating an OSD replacement log based on the failed OSD, the target PG and the target OSD and storing the log.
The OSD replacing device provided by the embodiment of the application comprises a memory 201 and a processor 202, wherein a computer program is stored in the memory 201, and the processor 202 executes the computer program to realize the following steps: replacing the information of the invalid OSD with the information of the target OSD in the OSD list of the current PG; migrating the data of the invalid OSD to the target OSD; and establishing and storing a corresponding relation between the target OSD and the current PG.
Referring to fig. 4, another OSD replacing apparatus provided in the embodiment of the present application may further include: an input port 203 connected to the processor 202, for transmitting externally input commands to the processor 202; a display unit 204 connected to the processor 202, for displaying the processing result of the processor 202 to the outside; and a communication module 205 connected to the processor 202 for implementing communication between the OSD replacing apparatus and the outside. The display unit 204 may be a display panel, a laser scanning display, or the like; the communication method adopted by the communication module 205 includes, but is not limited to, mobile high definition link technology (HML), Universal Serial Bus (USB), High Definition Multimedia Interface (HDMI), and wireless connection: wireless fidelity technology (WiFi), bluetooth communication technology, bluetooth low energy communication technology, ieee802.11s based communication technology.
A computer-readable storage medium is provided in an embodiment of the present application, in which a computer program is stored, and when the computer program is executed by a processor, the computer program implements the following steps:
determining a failed OSD;
determining a target PG corresponding to the failed OSD;
in an OSD list of the target PG, marking the state of the faulted OSD as invalid;
in the process of recalculating the PG distribution of the distributed storage system, acquiring an OSD list of the current PG, judging whether the OSD list of the current PG has an invalid OSD, if so, determining a target OSD based on a data distribution algorithm, and replacing the invalid OSD with the target OSD.
A computer-readable storage medium is provided in an embodiment of the present application, in which a computer program is stored, and when the computer program is executed by a processor, the computer program implements the following steps: the identification of the malfunctioning OSD is changed to invalid.
A computer-readable storage medium is provided in an embodiment of the present application, in which a computer program is stored, and when the computer program is executed by a processor, the computer program implements the following steps: and after the invalid OSD is replaced by the target OSD, generating an OSD replacement log based on the failed OSD, the target PG and the target OSD and storing the log.
A computer-readable storage medium is provided in an embodiment of the present application, in which a computer program is stored, and when the computer program is executed by a processor, the computer program implements the following steps: replacing the information of the invalid OSD with the information of the target OSD in the OSD list of the current PG; migrating the data of the invalid OSD to the target OSD; and establishing and storing a corresponding relation between the target OSD and the current PG.
The computer-readable storage media to which this application relates include Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage media known in the art.
For a description of a relevant part in an OSD replacing system, an OSD replacing device, and a computer readable storage medium provided in the embodiments of the present application, please refer to a detailed description of a corresponding part in an OSD replacing method provided in the embodiments of the present application, which is not described herein again. In addition, parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of corresponding technical solutions in the prior art, are not described in detail so as to avoid redundant description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. 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 application. Thus, the present application 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. An OSD replacement method is applied to a distributed storage system, and comprises the following steps:
determining a failed OSD;
determining a target PG corresponding to the faulted OSD;
marking the state of the failed OSD as invalid in an OSD list of the target PG;
in the process of recalculating the PG distribution of the distributed storage system, acquiring an OSD list of the current PG, judging whether an OSD with an invalid state exists in the OSD list of the current PG, if so, determining a target OSD based on a data distribution algorithm, and replacing the invalid OSD with the target OSD.
2. The method of claim 1, wherein the marking the status of the malfunctioning OSD as invalid comprises:
and replacing the identifier of the failed OSD as invalid.
3. The method of claim 1, wherein after the replacing the invalid OSD with the target OSD, further comprising:
and generating and storing an OSD replacement log based on the failed OSD, the target PG and the target OSD.
4. The method of any of claims 1-3, wherein the replacing the invalid OSD with the target OSD comprises:
replacing the information of the invalid OSD with the information of the target OSD in an OSD list of the current PG;
migrating the data of the invalid OSD to the target OSD;
and establishing and storing a corresponding relation between the target OSD and the current PG.
5. An OSD replacement system, applied to a distributed storage system, includes:
the first determining module is used for determining the failed OSD;
a second determining module, configured to determine a target PG corresponding to the failed OSD;
a first marking module, configured to mark a status of the failed OSD as invalid in an OSD list of the target PG;
the first setting module is used for acquiring an OSD list of the current PG in the process of recalculating PG distribution of the distributed storage system, judging whether the OSD list of the current PG has an invalid OSD, if so, determining a target OSD based on a data distribution algorithm, and replacing the invalid OSD with the target OSD.
6. The system of claim 5, wherein the first setup module comprises:
a first replacing unit, configured to replace the identifier of the failed OSD with an invalid identifier.
7. The system of claim 5, further comprising:
and the first generation module is used for generating and storing an OSD replacement log based on the failed OSD, the target PG and the target OSD after the invalid OSD is replaced by the target OSD through the first setting module.
8. The method of any of claims 5 to 7, wherein the first setup module comprises:
a first replacing unit, configured to replace, in an OSD list of a current PG, information of the invalid OSD with information of the target OSD;
a first migration unit, configured to migrate data of the invalid OSD to the target OSD;
and the first establishing unit is used for establishing and storing the corresponding relation between the target OSD and the current PG.
9. An OSD replacing device, which is applied to a distributed storage system, includes:
a memory for storing a computer program;
a processor for implementing the steps of the OSD replacing method according to any one of claims 1 to 4 when executing the computer program.
10. A computer-readable storage medium applied to a distributed storage system, the computer-readable storage medium storing a computer program, which when executed by a processor, implements the steps of the OSD replacing method according to any one of claims 1 to 4.
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Application publication date: 20200522 |