CN105740049A - Control method and apparatus - Google Patents
Control method and apparatus Download PDFInfo
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- CN105740049A CN105740049A CN201610056047.9A CN201610056047A CN105740049A CN 105740049 A CN105740049 A CN 105740049A CN 201610056047 A CN201610056047 A CN 201610056047A CN 105740049 A CN105740049 A CN 105740049A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
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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
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1479—Generic software techniques for error detection or fault masking
- G06F11/1482—Generic software techniques for error detection or fault masking by means of middleware or OS functionality
- G06F11/1484—Generic software techniques for error detection or fault masking by means of middleware or OS functionality involving virtual machines
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/48—Program initiating; Program switching, e.g. by interrupt
- G06F9/4806—Task transfer initiation or dispatching
- G06F9/4843—Task transfer initiation or dispatching by program, e.g. task dispatcher, supervisor, operating system
- G06F9/485—Task life-cycle, e.g. stopping, restarting, resuming execution
- G06F9/4856—Task life-cycle, e.g. stopping, restarting, resuming execution resumption being on a different machine, e.g. task migration, virtual machine migration
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45575—Starting, stopping, suspending or resuming virtual machine instances
Abstract
The present invention discloses a control method. The method comprises: when a virtual machine triggers a high availability (HA) failover, and if it is inquired that the virtual machine in a virtual machine configuration file is performing a migration operation, selecting a new node for the virtual machine, and sending the virtual machine configuration file to the new node, wherein a storage path in which the virtual machine in the virtual machine configuration file on a new node runs is a temporary snapshot file path; and running the virtual machine on the new node. The present invention also discloses a control apparatus. According to the method and apparatus disclosed by the present invention, in a virtual machine migration process, if the HA failover is triggered after the failure occurs, data in the virtual machine migration process can be enabled not to be lost.
Description
Technical field
The present invention relates to network communication technology field, particularly to a kind of control method and device.
Background technology
HA (HighAvailability, high reliability) cluster (Cluster) provides transparent redundant processing capabilities by one group of physical host, thus ensureing business continuance.Wherein, HA cluster is the common one group of physical host providing Internet resources for client, each the physical host providing Internet resources is called node, when physical host is unavailable or can not process the request of client, the Internet resources that this physical host provides can forward other available physical main frame in time to and process, and reduce service outage duration.
Summary of the invention
It is an object of the invention to provide a kind of control method and device, it is possible in virtual machine (vm) migration process, if after triggering HA fault migration of breaking down, it is ensured that the data in virtual machine (vm) migration process are not lost.
For achieving the above object, the invention provides a kind of control method, the method includes:
When virtual-machine fail triggers the migration of high reliability HA fault, if the described virtual machine inquired in virtual machine configuration is carrying out migration operation, new node is selected for described virtual machine, and virtual machine configuration is handed down to described new node, the path that store path is interim snapshot document that the virtual machine in the virtual machine configuration in described new node runs；Described new node runs this virtual machine.
For achieving the above object, present invention also offers a kind of control device, this device includes:
Processing unit, when virtual-machine fail triggers the migration of high reliability HA fault, if the described virtual machine inquired in virtual machine configuration is carrying out migration operation, new node is selected for described virtual machine, and virtual machine configuration is handed down to described new node, the path that store path is interim snapshot document that the virtual machine in the virtual machine configuration in described new node runs；
Running unit, runs this virtual machine on described new node.
In sum, in the embodiment of the present invention, when virtual-machine fail triggers the migration of high reliability HA fault, if the described virtual machine inquired in virtual machine configuration is carrying out migration operation, new node is selected for described virtual machine, and virtual machine configuration is handed down to described new node, the path that store path is interim snapshot document that the virtual machine in the virtual machine configuration in described new node runs；Described new node runs this virtual machine.So that it is guaranteed that the data writing interim snapshot document in virtual machine (vm) migration process are not lost.
Accompanying drawing explanation
Fig. 1 is the networking schematic diagram of the cloud computing management platform HA of the embodiment of the present invention.
Fig. 2 is the schematic flow sheet of the control method of one of them embodiment of the present invention.
Fig. 3 is the networking schematic diagram that the embodiment of the present invention controls device employing two-node cluster hot backup.
Fig. 4 is the structural representation that the present invention controls device.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearly understand, develop simultaneously embodiment referring to accompanying drawing, scheme of the present invention is described in further detail.
The operation principle of HA: have multiple node in cluster, each node runs one or more virtual machine, by heartbeat mechanism, node detects whether the other side exists, when finding certain node not responding request in time-out time, it is considered as this nodes break down, the dispatch deal strategy according to HA, select more idle node for affected virtual machine, and start affected virtual machine on this node, it is ensured that the seriality of virtual machine business.
What in prior art, virtual machine migrated online is achieved in that:
1) in the source storage pool at virtual machine foundation image file a place, an interim snapshot document is produced.
2) virtual machine is newly generated in transition process data write interim snapshot document, and foundation image file is to purpose storage pool migration simultaneously.
3) by after the foundation image Piece file mergence after interim snapshot document and migration to purpose storage pool, formed and include interim snapshot document and the storage volume of foundation image file, the title of storage volume remains as the title a of foundation image file, thus completing the online migration operation of virtual machine.
If virtual machine in transition process due to node or storage fault, the operation causing virtual machine (vm) migration terminates, HA fault migration can be carried out by trigger control device simultaneously, more idle node is selected for affected virtual machine, restart affected virtual machine on this node, and the foundation image file a in the virtual machine carry that this is restarted source storage pool, cause that the data write in interim snapshot document in virtual machine (vm) migration process before just lost.As the loss of the sensitive traffic this data of generation of data base, ldap server etc., consequence is very serious.
The core concept of the present invention is, control device is the Centroid in CAS (CloudAutomationSystem, cloud automated system) cloud computing management platform HA, is responsible for the task scheduling of whole platform.Control device in the configuration file of virtual machine, record the state of this virtual machine, preferably, flag bit can be introduced to record the state of virtual machine, virtual machine is in transition process, the migration operation of record virtual machine, and record the title of interim snapshot document, after the trigger control devices such as virtual machine generation server or storage fault carry out HA fault migration, first inquire about virtual machine state, decide whether the title according to the interim snapshot document recorded again, amendment virtual machine configuration, the store path that this virtual machine runs is revised as the path of interim snapshot document.So that it is guaranteed that the data writing interim snapshot document in virtual machine (vm) migration process are not lost.
Thus, the present invention proposes a kind of control method, and the method includes:
When virtual-machine fail triggers the migration of high reliability HA fault, if the described virtual machine inquired in virtual machine configuration is carrying out migration operation, new node is selected for described virtual machine, and virtual machine configuration is handed down to described new node, the path that store path is interim snapshot document that the virtual machine in the virtual machine configuration in described new node runs；Described new node runs this virtual machine.
Wherein, it is handed down to described new node after the store path that the virtual machine in virtual machine configuration runs is changed into the path of interim snapshot document；Or,
After virtual machine configuration is handed down to described new node, indicate described new node that the store path that this virtual machine in the virtual machine configuration issued runs is revised as the path of interim snapshot document.
After described new node runs this virtual machine, indicate new node by the source storage pool at foundation image file place before described interim snapshot document and foundation image Piece file mergence to virtual machine (vm) migration.
In above process, when virtual machine migrates online, this virtual machine configuration self preserved records this virtual machine and is carrying out migration operation；
Newly generated in transition process for this virtual machine data are write interim snapshot document, and records the title of described interim snapshot document, the next stage of image file suffix based on the suffix of interim snapshot document in this title.
After virtual machine has migrated online, this virtual machine configuration records this virtual machine and completes migration operation.
The networking schematic diagram of the cloud computing management platform HA of the embodiment of the present invention, as shown in Figure 1.Wherein, HA cluster has multiple node, each node runs one or more virtual machine.Control device and realize the unified management to resources such as the virtual machine run on all nodes, node, storage servers.Node stores server by switch-access.Storage server shares storage as network, for depositing the image file of virtual machine, and all image files of all virtual machines in HA cluster are required for being saved in the storage volume in storage server storage pool, the image file of a virtual machine can be saved in multiple storage volume of same storage pool.
Only illustrating source node and destination node in Fig. 1, wherein, after HA fault being migrated, selected new node, as destination node.Only illustrating source storage pool and purpose storage pool in Fig. 1, wherein, by image file from source storage pool to purpose storage pool migration when virtual machine migrates online, the two storage pool may be located on same storage server, it is also possible to is positioned on different storage server.
The schematic flow sheet of the control method of one of them embodiment of the present invention is as in figure 2 it is shown, comprise the following steps:
Step 21, when virtual-machine fail trigger high reliability HA fault migrate time, if control device inquires the described virtual machine in virtual machine configuration and is carrying out migration operation, then revise virtual machine configuration, the store path that this virtual machine runs is revised as the path of interim snapshot document；
Step 22, to control device be that this virtual machine selects new node, and amended virtual machine configuration is handed down to new node, with on the node new at this with this virtual machine of amended Profile Up.
In actual applications, operator can notify that control device carries out virtual machine and migrates online, or controls device execution DRS, when needs load balancing, carries out virtual machine and migrates online.
In the present invention, when virtual machine migrates online,
S1, control device record this virtual machine in this virtual machine configuration and are carrying out migration operation.
S2, control device instruction source node produce the delta file of image file based on an interim snapshot document in the source storage pool at virtual machine foundation image file place, and data newly generated in transition process for this virtual machine are write described interim snapshot document；Control device according to the relation between interim snapshot document and foundation image file, record the title of described interim snapshot document, the next stage of image file suffix based on the suffix of interim snapshot document in this title.
Wherein, virtual machine foundation image file, it is possible to be that specific a series of files are fabricated to single file according to certain form, to facilitate user to download and to use, be saved in storage pool.In virtual machine (vm) migration anteposition in the storage pool of source, during virtual machine (vm) migration, by foundation image file from source storage pool migration to purpose storage pool.
S3, according to foundation image file in existing mode to purpose storage pool migration, after the foundation image Piece file mergence after interim snapshot document and migration to purpose storage pool, formed and include interim snapshot document and the storage volume of foundation image file, thus completing the online migration operation of virtual machine.
S4, after virtual machine has migrated online, control device and in this virtual machine configuration, record this virtual machine complete migration operation.
If virtual machine due to node or storage fault, causes that the operation of virtual machine (vm) migration terminates, can carry out HA fault migration by trigger control device in transition process simultaneously.At this moment, owing to this virtual machine recorded is carrying out migration operation in step sl, can inquire so controlling device, therefore controlling the device title according to the interim snapshot document recorded, the store path run by this virtual machine in virtual machine configuration is revised as the path of interim snapshot document by the path of foundation image file.
In the present invention, owing in virtual machine (vm) migration process, fault triggers the migration of HA fault, so interim snapshot document and foundation image file are still saved in the storage pool of source, so with after this virtual machine of amended Profile Up on the node that this is new, control the device new node of instruction will described interim snapshot document and foundation image Piece file mergence to source storage pool, formation includes interim snapshot document and the storage volume of foundation image file.
In the present invention, with after this virtual machine of amended Profile Up on the node that this is new, control device and the title of fault virtual machine is sent to manager by warning information, in order to manager notifies that the operator of fault virtual machine place node verifies that whether business is abnormal in time.
Concrete scene is set forth below illustrate.
1), when enabling HA, control device and can preserve the configuration file of each virtual machine in HA cluster, the information such as the content of configuration file includes the internal memory of virtual machine, the store path of operation.
Preferably, controlling device and also increase flag labelling in the virtual machine configuration preserved in the embodiment of the present invention, the state that this virtual machine of labelling carries out, for instance flag puts 1, labelling virtual machine is carrying out migration operation；Flag sets to 0, and labelling virtual machine does not carry out migration operation or migration operation terminates.
2) when virtual machine migrates online, controlling device and revise the flag labelling in this virtual machine configuration, flag puts 1, this virtual machine of labelling is carrying out migration operation.
3) control device instruction source node in the source storage pool at virtual machine foundation image file a place, produce the delta file of image file based on an interim snapshot document, data newly generated in transition process for this virtual machine are write described interim snapshot document；
Control device according to the relation between interim snapshot document and foundation image file, record the title of described interim snapshot document, the next stage of image file suffix based on the suffix of interim snapshot document in this title.Such as, 1441591338246 timestamps are the suffix of interim snapshot document, and therefore, a.1441591338246 the name of interim snapshot document is called.This is one of which optimal way, any other path can being written and read from interim snapshot document, all in protection scope of the present invention.
4) according to foundation image file a in existing mode to purpose storage pool migration, after the foundation image Piece file mergence after interim snapshot document and migration to purpose storage pool, formed and include interim snapshot document and the storage volume of foundation image file, thus completing the online migration operation of virtual machine.
5) after completing virtual machine and migrating online, the flag labelling in the configuration file of this virtual machine that update control apparatus self preserves, flag is set to 0, this virtual machine (vm) migration of labelling has operated.
So far, the whole operating process that virtual machine of the present invention does not break down in transition process is completed.It is crucial that when virtual machine migrates online, record is just in migration operation, and records the title of interim snapshot document, and when virtual machine has migrated online, record migration completes operation.
6) when virtual machine due to node or storage fault, HA fault migration can be carried out by trigger control device.It should be noted that virtual machine is likely to be in transition process fault, causes that the operation of virtual machine (vm) migration terminates, can carry out HA fault migration by trigger control device simultaneously；It could also be possible that in non-migrating process fault, trigger control device carries out HA fault migration.
Now, the flag labelling in device inquiry virtual machine configuration is controlled.
If flag does not put 1, then it represents that virtual machine, not in transition process, is undertaken by existing HA fault migration operation, select new node for fault virtual machine, the node that this is new runs this fault virtual machine.This new node mainly needs to meet two conditions, one be node that this is new with fault virtual machine former place node all in HA cluster, and the same storage pool of carry；Two is that node load in HA cluster that this is new is relatively low.
If flag puts 1, then represent that virtual machine is just in transition process, then controlling device further according to the title of the interim snapshot document recorded in configuration file a.1441591338246, the store path run by this virtual machine in virtual machine configuration is revised as the path of interim snapshot document by the path of foundation image file.Then, select new node for this virtual machine, amended virtual machine configuration be handed down to new node, with on the node new at this with this virtual machine of amended Profile Up.So, having have modified, owing to being handed down in the configuration file of new node, the store path that virtual machine runs, therefore, virtual machine one runs, just can be written and read from interim snapshot document, ensure that the data write in interim snapshot document in virtual machine (vm) migration process are not lost.
Be can be seen that by above-mentioned, in the embodiment of the present invention, control device record virtual machine (vm) migration state, work as virtual-machine fail, when trigger control device carries out the migration of HA fault, controlling device can according to the virtual machine state recorded, it is determined that be undertaken by existing HA fault migration operation, or is undertaken by Fig. 2 of the present invention operation.So, it is possible to guarantee that the data writing interim snapshot document in virtual machine (vm) migration process are not lost.
7) due to fault triggering HA fault migration in virtual machine (vm) migration process, so the operation of virtual machine (vm) migration terminates, interim snapshot document and foundation image file are still saved in the storage pool of source, preferably, the present invention on the node that this is new with after this virtual machine of amended Profile Up, control the device new node of instruction will described interim snapshot document and foundation image Piece file mergence to source storage pool, formation includes interim snapshot document and the storage volume of foundation image file.So, it is achieved that the merging after the migration of HA fault, by interim snapshot document together with foundation image Piece file mergence, specifically, it is possible to interim snapshot document is merged in foundation image file a.
8) preferably, after HA fault has migrated, control device and the title of fault virtual machine is sent to manager by warning information, in order to manager notifies that the operator of fault virtual machine place node verifies that whether business is abnormal in time.
The control method of another embodiment of the present invention, comprises the following steps:
Step 31, when virtual-machine fail trigger high reliability HA fault migrate time, if control device inquires the described virtual machine in virtual machine configuration and is carrying out migration operation, then select new node for this virtual machine, this virtual machine configuration is handed down to new node；
Step 32, control device and indicate node that this is new that the store path that this virtual machine in the virtual machine configuration issued runs is revised as the path of interim snapshot document, with on the node new at this with this virtual machine of amended Profile Up.
It should be noted that differing only between the above embodiment of the present invention, wherein in an embodiment, when HA fault migrates, control device and be handed down in the configuration file of new node and have modified the store path that virtual machine runs.Wherein in another embodiment, when HA fault migrates, control device is handed down to the configuration file of new node and remains the configuration file not revising virtual machine operation store path, then controls the path that store path is interim snapshot document that in the node amendment configuration file that device indicates this new, virtual machine runs.In the online transition process of virtual machine, and after new node has run this fault virtual machine, the operation carried out, the operating process of the embodiment of the present invention is all identical, does not repeat them here.
Preferably, for avoiding controlling plant failure, the present invention adopts the two-node cluster hot backup controlling device simultaneously, and Fig. 3 is the networking schematic diagram that the embodiment of the present invention controls device employing two-node cluster hot backup.Fig. 3 controls device 1 and control device 2 backups each other, by virtual machine configuration record under/etc/cvm catalogue, the subregion of this catalogue carry is Tong Bu with standby control device in real time by drdb, so when controlling plant failure, operation in backup control device also is able to read same configuration information, better ensures the seriality of business.
Based on same inventive concept, control device of the present invention, referring to Fig. 4, including:
Processing unit 401, when virtual-machine fail triggers the migration of high reliability HA fault, if the described virtual machine inquired in virtual machine configuration is carrying out migration operation, new node is selected for described virtual machine, and virtual machine configuration is handed down to described new node, the path that store path is interim snapshot document that the virtual machine in the virtual machine configuration in described new node runs；
Running unit 402, runs this virtual machine on described new node.
Described processing unit 401, is handed down to described new node after the store path that the virtual machine in virtual machine configuration runs specifically changes into the path of interim snapshot document；Or,
After virtual machine configuration is handed down to described new node, indicate described new node that the store path that this virtual machine in the virtual machine configuration issued runs is revised as the path of interim snapshot document.
Described device also includes record unit 403: when virtual machine migrates online, record this virtual machine and carrying out migration operation in this virtual machine configuration；
After virtual machine has migrated online, this virtual machine configuration records this virtual machine and completes migration operation.
Described record unit 403 is additionally operable to: when virtual machine migrates online, data newly generated in transition process for this virtual machine are write interim snapshot document, and record the title of described interim snapshot document, the next stage of image file suffix based on the suffix of interim snapshot document in this title.
Described device also includes instruction and merges unit 404, after running this virtual machine, indicates new node by the source storage pool at foundation image file place before described interim snapshot document and foundation image Piece file mergence to virtual machine (vm) migration on described new node.
The embodiment of the present invention, can bring following benefit:
One, control device in the configuration file of virtual machine, record the state of this virtual machine, virtual machine is in transition process, the migration operation of record virtual machine, and record the title of interim snapshot document, after the trigger control devices such as virtual machine generation server or storage fault carry out HA fault migration, first inquire about virtual machine state, decide whether the title according to the interim snapshot document recorded again, amendment virtual machine configuration, is revised as the path of interim snapshot document by the store path that this virtual machine runs.So that it is guaranteed that the data writing interim snapshot document in virtual machine (vm) migration process are not lost.
Two, for avoiding controlling device hostdown, adopt the two-node cluster hot backup controlling device simultaneously, better ensure the seriality of business.
The above, be only presently preferred embodiments of the present invention, is not intended to limit protection scope of the present invention.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. a control method, the method includes:
When virtual-machine fail triggers the migration of high reliability HA fault, if the described virtual machine inquired in virtual machine configuration is carrying out migration operation, new node is selected for described virtual machine, and virtual machine configuration is handed down to described new node, the path that store path is interim snapshot document that the virtual machine in the virtual machine configuration in described new node runs；Described new node runs this virtual machine.
2. the method for claim 1, it is characterised in that be handed down to described new node after the store path that the virtual machine in virtual machine configuration runs is changed into the path of interim snapshot document；Or,
After virtual machine configuration is handed down to described new node, indicate described new node that the store path that this virtual machine in the virtual machine configuration issued runs is revised as the path of interim snapshot document.
3. the method for claim 1, it is characterised in that the method farther includes: when virtual machine migrates online, records this virtual machine in virtual machine configuration and is carrying out migration operation；
After virtual machine has migrated online, virtual machine configuration records this virtual machine and completes migration operation.
4. the method for claim 1, it is characterized in that, the method farther includes: when virtual machine migrates online, data newly generated in transition process for this virtual machine are write interim snapshot document, and record the title of described interim snapshot document, the next stage of image file suffix based on the suffix of interim snapshot document in this title.
5. the method for claim 1, it is characterised in that after running this virtual machine on described new node, indicates new node by the source storage pool at foundation image file place before described interim snapshot document and foundation image Piece file mergence to virtual machine (vm) migration.
6. controlling a device, this device includes:
Processing unit, when virtual-machine fail triggers the migration of high reliability HA fault, if the described virtual machine inquired in virtual machine configuration is carrying out migration operation, new node is selected for described virtual machine, and virtual machine configuration is handed down to described new node, the path that store path is interim snapshot document that the virtual machine in the virtual machine configuration in described new node runs；
Running unit, runs this virtual machine on described new node.
7. device as claimed in claim 6, it is characterised in that described processing unit, is handed down to described new node after the store path that the virtual machine in virtual machine configuration runs specifically changes into the path of interim snapshot document；Or,
After virtual machine configuration is handed down to described new node, indicate described new node that the store path that this virtual machine in the virtual machine configuration issued runs is revised as the path of interim snapshot document.
8. device as claimed in claim 6, it is characterised in that described device also includes record unit: when virtual machine migrates online, record this virtual machine and carrying out migration operation in virtual machine configuration；
After virtual machine has migrated online, virtual machine configuration records this virtual machine and completes migration operation.
9. device as claimed in claim 6, it is characterized in that, described record unit is additionally operable to: when virtual machine migrates online, data newly generated in transition process for this virtual machine are write interim snapshot document, and record the title of described interim snapshot document, the next stage of image file suffix based on the suffix of interim snapshot document in this title.
10. device as claimed in claim 6, it is characterized in that, described device also includes instruction and merges unit, after described new node runs this virtual machine, indicate new node by the source storage pool at foundation image file place before described interim snapshot document and foundation image Piece file mergence to virtual machine (vm) migration.
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| CN110377456A (en) * | 2019-07-05 | 2019-10-25 | 苏州浪潮智能科技有限公司 | A kind of management method and device of virtual platform disaster tolerance |
| CN110377456B (en) * | 2019-07-05 | 2021-11-26 | 苏州浪潮智能科技有限公司 | Management method and device for virtualization platform disaster tolerance |
| CN111930563A (en) * | 2020-07-15 | 2020-11-13 | 中国人民解放军陆军工程大学 | Fault tolerance method in cloud simulation system |
| CN111930563B (en) * | 2020-07-15 | 2022-01-11 | 中国人民解放军陆军工程大学 | Fault tolerance method in cloud simulation system |
| CN113608836A (en) * | 2021-08-06 | 2021-11-05 | 上海英方软件股份有限公司 | Cluster-based virtual machine high availability method and system |
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