CN113126924B - Data migration method, device and equipment and computer readable storage medium - Google Patents
Data migration method, device and equipment and computer readable storage medium Download PDFInfo
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0604—Improving or facilitating administration, e.g. storage management
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- 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
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- 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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- 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
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Abstract
The invention discloses a data migration method, and the data migration method provided by the application supports the suspension and continuous transmission of a migration task, namely, a user can suspend the migration in the data migration process and can smoothly continue the transmission of data from a central point in consideration that a data volume with larger data volume can affect the normal access of data for a long time during the migration. The invention also discloses a data migration device, equipment and a computer readable storage medium, which have the same beneficial effects as the data migration method.
Description
Technical Field
The invention relates to the field of storage systems, in particular to a data migration method, and also relates to a data migration device, equipment and a computer readable storage medium.
Background
In the cloud computing era, the application of a distributed storage system is more and more extensive, data of the distributed storage system is stored in a data volume, migration of the data volume frequently occurs in the distributed storage system, the time consumption of data migration work is in direct proportion to the size of the data volume in the data volume, and if the data volume in the data volume is large, the data volume migration work needs a long time, so that the data migration work may occupy the bandwidth of normal data access for a long time, normal data access is affected for a long time, and user experience is reduced.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a data migration method, which can be used for dividing the migration work of a certain data volume into multiple times for migration according to the requirement of a user, thereby reducing the influence on the normal access of data and improving the user experience; another object of the present invention is to provide a data migration apparatus, device and computer-readable storage medium, where a user can split the migration work of a certain data volume into multiple times of migration according to his own needs, so as to reduce the influence on normal access of data and improve user experience.
In order to solve the above technical problem, the present invention provides a data migration method, including:
responding to the task execution instruction, and judging whether a target volume in the data migration task exists or not;
if not, creating the target volume;
starting to migrate data to the target volume from an initial point of a source volume in the data migration task and updating the migrated data volume in real time;
if yes, determining a migration task middle stop point of the source volume according to the migrated data volume;
and migrating data to the target volume from the middle dead point of the migration task and updating the migrated data volume in real time.
Preferably, if the migration task termination point exists, the step of determining the migration task termination point of the source volume according to the migrated data volume specifically includes:
if yes, judging whether the metadata of the target volume contains migration information or not;
if yes, determining a migration task middle stop point of the source volume according to the migrated data volume in the migration information;
if not, controlling a prompter to prompt the target volume renaming;
the data migration method further comprises:
and deleting the migration information and the source volume when the execution of the data migration task is finished.
Preferably, the data migration method further includes:
and in the process of migrating the data in the source volume to the target volume, responding to a task stopping instruction, and stopping the data migration task.
Preferably, the task suspension instruction is:
any one of a task suspension instruction generated by triggering when the migrated data volume reaches a preset data volume threshold value, a task suspension instruction generated by triggering when the total execution time of the data migration task reaches a preset time value, a task suspension instruction generated by triggering when the real-time reaches a preset suspension time period, and a task suspension instruction received through a human-computer interaction interface.
Preferably, the migrating data to the target volume from the middle point of the migration task and updating the migrated data volume in real time specifically include:
determining the source volume according to the source volume position information in the migration information;
migrating data to the target volume from the middle point of the migration task of the source volume and updating the migrated data volume in real time.
Preferably, when the method is applied to a distributed block storage system, the migrated data amount is the number of migrated objects.
In order to solve the above technical problem, the present invention further provides a data migration apparatus, including:
the judging module is used for responding to the task execution instruction, judging whether a target volume in the data migration task exists or not, if not, triggering the creating module, and if so, triggering the determining module;
the creation module is used for creating the target volume;
the first migration module is used for migrating data to the target volume from an initial point of a source volume in the data migration task and updating the migrated data volume in real time;
the determining module is configured to determine a migration task middle-dead point of the source volume according to the migrated data amount;
and the second migration module is used for migrating data to the target volume from the middle dead point of the migration task and updating the migrated data volume in real time.
Preferably, when the method is applied to a distributed block storage system, the migrated data amount is the number of migrated objects.
In order to solve the above technical problem, the present invention further provides a data migration apparatus, including:
a memory for storing a computer program;
a processor for implementing the steps of the accelerated task processing method as described above when executing the computer program.
To solve the above technical problem, the present invention further provides a computer-readable storage medium having a computer program stored thereon, where the computer program is executed by a processor to implement the steps of the accelerated task processing method as described above.
The invention provides a data migration method, and the data migration method provided by the application supports the suspension and continuous transmission of a migration task, namely, a user can suspend the migration in the data migration process and can smoothly continue the transmission of data from a central point, so that the user can divide the migration work of a certain data volume into multiple times of migration according to the own requirements, thereby reducing the influence on the normal access of the data and improving the user experience.
The invention also provides a data migration device, equipment and a computer readable storage medium, which have the same beneficial effects as the data migration method.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flow chart illustrating a data migration method according to the present invention;
FIG. 2 is a schematic diagram of a data migration apparatus according to the present invention;
fig. 3 is a schematic structural diagram of a data migration device according to the present invention.
Detailed Description
The core of the invention is to provide a data migration method, a user can divide the migration work of a certain data volume into multiple times for migration according to own requirements, thereby reducing the influence on the normal access of data and improving the user experience; another core of the present invention is to provide a data migration apparatus, a device, and a computer-readable storage medium, which enable a user to split the migration work of a certain data volume into multiple times for migration according to the user's own needs, thereby reducing the influence on the normal access of data and improving the user experience.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a data migration method provided by the present invention, where the data migration method includes:
step S1: responding to the task execution instruction, and judging whether a target volume in the data migration task exists or not;
specifically, in order to implement flexible partition control of the migration duration of a single data volume, in the embodiment of the present invention, suspension and continuous transfer of a migration task are implemented by setting migration information including a migrated data volume for the data migration task, so as to improve flexibility of migration work of the data volume.
Specifically, when a data migration task is executed, a migration destination, that is, the target volume, needs to be provided, and the target volume does not exist normally when a certain data migration task is executed for the first time, and needs to be newly established.
Step S2: if not, creating a target volume;
specifically, if the target volume does not exist, it indicates that the data migration task may be executed for the first time, and therefore the target volume may be created for subsequent data migration.
When creating the target volume, the target volume may be created according to the storage pool and the data volume name specified in the data migration task, which is not limited herein in the embodiment of the present invention.
And step S3: starting to migrate data to a target volume from an initial point of a source volume in a data migration task and updating the migrated data volume in real time;
specifically, after the target volume is created, the data migration task may be executed for the first time, and since a certain sequence is inevitably followed when the data volume is migrated, the data migration task may be started from the initial point of the source volume to the target volume.
Specifically, after the data migration task is suspended for various reasons, only a part of data is theoretically migrated, and in order to facilitate accurate determination of "from which position the data migration should be started" when the data migration task is executed next time and data migration is performed, the embodiment of the present invention may update the migrated data amount in real time in the data migration process, and facilitate determination of a middle stop point of the migration task and data migration when a subsequent "non-first" data migration task is executed.
And step S4: if the migration task middle stop point exists, determining the migration task middle stop point of the source volume according to the migrated data volume;
specifically, in the case that the target volume exists, the data migration task is probably terminated before, and the target volume is also created when the data migration task is executed for the first time before, and since partial data migration has been performed before, in order to be able to directly migrate the remaining data that is not migrated in the embodiment of the present invention, a termination point in the migration task of the source volume may be determined according to a "migrated data amount" corresponding to the data migration task, and the data is continued to be transferred of the source volume based on the data of the subsequent step, so that continuation of the data migration task after termination is implemented, and a user may terminate the data migration task according to his own needs.
Step S5: and migrating the data to the target volume from the middle dead point of the migration task and updating the migrated data volume in real time.
Specifically, since the migration task midpoint has been determined in the foregoing steps, when the data migration task is executed this time, data can be migrated to the target volume from the migration task midpoint, so that repeated data migration does not occur, which ensures efficient migration work, and meanwhile, the migrated data amount also needs to be updated in real time to prevent suspension of the data migration task when the data migration task is not completed.
The invention provides a data migration method, and the data migration method provided by the application supports suspension and continuous transmission of a migration task considering that a data volume with a large data volume can affect normal data access for a long time during migration, namely, a user can suspend migration in the data migration process and can smoothly continue transmission of data from a middle point.
On the basis of the above-described embodiment:
as a preferred embodiment, if there is a migration task termination point of the source volume determined according to the migrated data amount, specifically:
if yes, judging whether the metadata of the target volume contains migration information or not;
if yes, determining a migration task middle stop point of the source volume according to the migrated data volume in the migration information;
if not, controlling a prompter to prompt the target volume with the duplicate name;
the data migration method further comprises:
and when the execution of the data migration task is finished, deleting the migration information and the source volume.
Specifically, when a data migration task is generated, the name of the target volume may be duplicated with an existing data volume, and thus the target volume cannot be generated, so in the embodiment of the present invention, migration information and the source volume may be deleted when the data migration task is completed, and when the data migration task is not executed for the first time, whether the data migration task is suspended or not may be determined by determining whether the metadata in the target volume includes the migration information, or whether the target volume is duplicated with the existing target volume, and in the embodiment of the present invention, a prompter may be controlled to prompt the duplicate name of the target volume, so that a worker may find the duplicate name in time and make an adjustment, which is beneficial to improving work efficiency.
Specifically, the reason for deleting the source volume is: the data in the source volume has been migrated to the target volume to the greatest extent, so deleting the data of the source volume can save storage space.
The prompting device may be of various types, for example, a display, and the like, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the data migration method further includes:
in the process of migrating the data in the source volume to the target volume, the data migration task is terminated in response to the task termination instruction.
Specifically, there are many ways to suspend the data migration task, for example, the data migration task may be automatically suspended when the distributed storage system is powered off unexpectedly or is powered off actively by a user, or the data migration task may be suspended in response to a task suspension instruction, so that the user is provided with greater flexibility and convenience, and the user may suspend the data migration task by actively sending the instruction.
Of course, besides this way, the termination of the data migration task may also be in other various situations, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the task abort instruction is:
any one of a task suspension instruction generated by triggering when the migrated data volume reaches a preset data volume threshold value, a task suspension instruction generated by triggering when the total execution time of the data migration task reaches a preset time value, a task suspension instruction generated by triggering when the real-time reaches a preset suspension time period, and a task suspension instruction received through a human-computer interaction interface.
Specifically, the task suspension instruction may be automatically generated or may be actively generated by a user, and different task suspension instructions may implement multiple different suspension manners, for example, if a data reading task of the user is busy in a certain time period, the time period may be set as a preset suspension time period, so that if a data migration task that is being executed exists in the preset suspension time period, the task suspension instruction is automatically generated and the data migration task is suspended, and for example, the data amount of each data migration may be limited by a preset data amount threshold, for example, the preset data amount threshold may be a multiple of 1000: 1000. 2000, 3000 \8230, in this way, when the migrated data volume reaches 1000, the data migration is automatically stopped, and in the next data migration process, when the migrated data volume reaches 2000, the data migration is automatically stopped, and so on, and the data migration task is automatically executed in different times.
Of course, besides the above examples, the task suspension instruction may be of other types, and the embodiments of the present invention are not limited herein.
As a preferred embodiment, migrating data to a target volume from a middle-dead-center point of a migration task and updating the migrated data volume in real time specifically includes:
determining a source volume according to the source volume position information in the migration information;
and migrating the data to the target volume from the middle stop point of the migration task of the source volume and updating the migrated data volume in real time.
Specifically, in the embodiment of the present invention, the source volume location information may be stored in the migration information of the metadata of the target volume, so that the source volume and the midpoint of the migration task may be conveniently determined from the migration information and data migration may be performed when the data migration task is not performed for the first time.
The source volume location information may include a source volume storage pool name and a volume name of the source volume, and the source volume may be quickly determined by the two pieces of information.
Of course, the source volume location information may also be stored elsewhere, for example, included in the task execution instruction, and the like, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, when the method is applied to a distributed block storage system, the migrated data amount is the number of migrated objects.
Specifically, the embodiment of the present invention may be applied to various types of distributed storage systems, such as a distributed block storage system, so that the migrated data amount may be the number of migrated objects, and the migrated data amount in the distributed block storage system may be accurately measured by the number of objects.
Of course, besides the distributed block storage system, the present invention may also be applied to other types of distributed storage systems, and the embodiments of the present invention are not limited herein.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a data migration apparatus according to the present invention, the data migration apparatus including:
the judging module 1 is used for responding to the task execution instruction, judging whether a target volume in the data migration task exists or not, if not, triggering the creating module 2, and if so, triggering the determining module 4;
a creation module 2 for creating a target volume;
the first migration module 3 is configured to start migrating data to a target volume from an initial point of a source volume in a data migration task and update a migrated data amount in real time;
the determining module 4 is used for determining a migration task middle stop point of the source volume according to the migrated data volume;
and the second migration module 5 is used for migrating the data to the target volume from the middle dead point of the migration task and updating the migrated data volume in real time.
As a preferred embodiment, when the method is applied to a distributed block storage system, the migrated data amount is the number of migrated objects.
For the introduction of the data migration apparatus provided in the embodiment of the present invention, reference is made to the foregoing embodiment of the data migration method, and details of the embodiment of the present invention are not repeated herein.
The present invention also provides a data migration apparatus, comprising:
a memory 6 for storing a computer program;
and a processor 7 for implementing the steps of the accelerated task processing method in the foregoing embodiments when executing the computer program.
For the introduction of the data migration apparatus provided in the embodiment of the present invention, reference is made to the foregoing embodiment of the data migration method, and details of the embodiment of the present invention are not repeated herein.
In order to solve the above technical problem, the present invention further provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the method for accelerating task processing as in the foregoing embodiments.
For introduction of the computer-readable storage medium provided in the embodiment of the present invention, reference is made to the foregoing embodiment of the data migration method, and details of the embodiment of the present invention are not repeated herein.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It is further noted that, in the present specification, relational terms such as first and second, and the like are 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 phrases "comprising a component of' 8230; \8230;" does not exclude the presence of additional like 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 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 (9)
1. A method of data migration, comprising:
responding to the task execution instruction, and judging whether a target volume in the data migration task exists or not;
if not, creating the target volume;
migrating data to the target volume from an initial point of a source volume in the data migration task and updating the migrated data volume in real time;
if yes, determining a migration task middle stop point of the source volume according to the migrated data volume;
migrating data to the target volume from the middle stop point of the migration task and updating the migrated data volume in real time;
if yes, determining a migration task termination point of the source volume according to the migrated data volume specifically as follows:
if yes, judging whether the metadata of the target volume contains migration information;
if yes, determining a migration task middle stop point of the source volume according to the migrated data volume in the migration information;
if not, controlling a prompter to prompt the target volume renaming;
the data migration method further comprises:
and deleting the migration information and the source volume when the execution of the data migration task is finished.
2. The data migration method according to claim 1, further comprising:
and in the process of migrating the data in the source volume to the target volume, responding to a task stopping instruction, and stopping the data migration task.
3. The data migration method according to claim 2, wherein the task suspension instruction is:
any one of a task suspension instruction generated by triggering when the migrated data volume reaches a preset data volume threshold value, a task suspension instruction generated by triggering when the total execution time of the data migration task reaches a preset time value, a task suspension instruction generated by triggering when the real-time reaches a preset suspension time period, and a task suspension instruction received through a human-computer interaction interface.
4. The data migration method according to claim 1, wherein the migrating data to the target volume from the middle point of the migration task and updating the migrated data volume in real time specifically includes:
determining the source volume according to the source volume position information in the migration information;
migrating data to the target volume from the middle stop point of the migration task of the source volume and updating the migrated data volume in real time.
5. The data migration method according to any one of claims 1 to 4, wherein when applied to the distributed block storage system, the migrated data amount is the number of migrated objects.
6. A data migration apparatus, comprising:
the judging module is used for responding to the task execution instruction, judging whether a target volume in the data migration task exists or not, if not, triggering the creating module, and if so, triggering the determining module;
the creation module is used for creating the target volume;
the first migration module is used for migrating data to the target volume from an initial point of a source volume in the data migration task and updating the migrated data volume in real time;
the determining module is configured to determine a migration task middle-dead point of the source volume according to the migrated data amount;
the second migration module is used for migrating data to the target volume from the middle dead point of the migration task and updating the migrated data volume in real time;
the determining module is specifically configured to:
if yes, judging whether the metadata of the target volume contains migration information;
if yes, determining a migration task middle stop point of the source volume according to the migrated data volume in the migration information;
if not, controlling a prompter to prompt the target volume renaming;
the data migration method further comprises:
and when the execution of the data migration task is finished, deleting the migration information and the source volume.
7. The data migration apparatus according to claim 6, wherein, when applied to a distributed block storage system, the migrated data amount is the number of migrated objects.
8. A data migration apparatus, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the accelerated task processing method according to any one of claims 1 to 5 when executing the computer program.
9. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the accelerated task processing method according to any one of claims 1 to 5.
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