198 results about "Live migration" patented technology

The invention discloses a service migration method and system based on user trajectory prediction, and relates to the field of service migration in a mobile edge environment, and the method comprises the steps: collecting urban road network data, user historical long-term trajectory data and user short-term trajectory data, and predicting a user future trajectory through an STG-Informer model; judging whether service migration is needed or not based on the distance between the future trajectory of the user and the current edge server; if migration is needed, a target migration node with the optimal comprehensive reputation value is selected according to the future trajectory of the user, the optimal migration path is planned through a graph search algorithm, and real-time migration of the service is achieved; otherwise, merging the trajectory points into the short-term trajectory data of the user along with the movement of the user, re-predicting the future trajectory of the user, and judging whether service migration is needed or not. The method can effectively reduce the service delay and improve the resource utilization rate, is suitable for scenes such as intelligent traffic and mobile edge computing, and provides seamless service experience for users.

The embodiment of the invention provides a data migration method and device under a large data volume scene, and the method comprises the steps: determining a to-be-migrated index of target data in a distributed search engine and fragmentation setting of the to-be-migrated index, and determining a corresponding migration task data volume and a migration task priority according to the size of the to-be-migrated index and hotspot distribution in the fragmentation setting, determining a corresponding migration strategy according to the migration task data volume and the migration task priority; reading target data in the index to be migrated in batches according to a migration strategy, writing the target data into an immigration directory in a local file system, and inputting the real-time migration speed and the real-time resource utilization rate of the local file system into a set linear regression model, dynamically updating the data volume read during each migration operation, the maximum file number of each storage directory and the immigration directory according to real-time adjustment parameters output by the linear regression model; according to the method, the data migration efficiency and accuracy in a large data volume scene can be effectively improved.

The invention provides a virtual machine live migration method and computing equipment. The method is applied to a host machine, and a virtual machine, a first execution body and a second execution body run in a processor of the host machine. Write permission bits of a plurality of data pages of the virtual machine are stored in the host machine. The processor is provided with a hardware setting function for a write permission bit, and the write permission bit of a first data page in the plurality of data pages is a first value indicating that the first data page is not writable. The method comprises the following steps: when a virtual machine performs write operation on a first data page, a processor modifies a write permission bit of the first data page to represent a writable second value of the first data page; the second executor updates a dirty page bitmap of the virtual machine according to the write permission bit of the first data page; the first executor determines a dirty page of the virtual machine according to the dirty page bitmap, notifies the second executor to modify a write permission bit of the dirty page of the virtual machine to a first value, and migrates the dirty page of the virtual machine, and the dirty page of the virtual machine comprises the first data page.

Systems and methods are directed toward proactive and / or reactive notification and connection parameter adjustments responsive to live migration events. When an application or program is migrated to new underlying hardware, messages may be provided to associated senders to dynamically and / or temporarily adjust different connection parameters to reduce a likelihood of determining the connection is inactive. A proactive notification may broadcast status information during the live migration to each node in a network and / or to particular nodes associated with the migrating receiver. A reactive notification may provide a message regarding receiver status responsive to receiving incoming traffic.

The invention provides a network interruption optimization method, system and device during virtual machine live migration and a medium, and belongs to the technical field of cloud computing. The method comprises the following steps: performing time synchronization on all computing nodes, and deploying message middleware; monitoring the memory migration progress of the virtual machine and the dirty page generation rate of the virtual machine in real time, and calculating a virtual machine switching time point; a live migration switching notification message is generated based on the virtual machine switching time point, and the source node pushes the live migration switching notification message to a target node and related computing nodes through message middleware; after receiving the live migration switching notification message, the target node creates virtual network equipment and updates a link according to the live migration switching notification message; after the related computing node receives the live migration switching notification message, routing equipment creation and link updating required by the virtual machine are carried out according to the live migration switching notification message; and monitoring the migration process of the virtual machine memory in real time, and executing the thermal migration rollback and retry process when the migration fails.

Described are techniques for multi-tenant security. The techniques include detecting malicious activity on a compromised application in a multi-tenant host. The techniques further include automatically performing a live migration of each tenant of the multi-tenant host to a respective single-tenant host. The techniques further include mitigating the malicious activity on the compromised application that is migrated to a single-tenant host, and automatically performing another live migration of each benign tenant to a new multi-tenant host.

The invention provides a virtual machine thermal migration system used in a DPU (Data Processing Unit) environment, which comprises a source host on which a source Hypervisor is operated, and the source Hypervisor manages a source virtual machine to be migrated; the destination host is used for establishing a destination virtual machine in response to the live migration instruction of the source host and receiving data to be migrated; the agent module is deployed in a source virtual machine managed by the source Hypervisor and is used for receiving an instruction of the source Hypervisor and collecting memory information of the source virtual machine, and the memory data comprises information of an unused memory; and the thermal migration control module is used for controlling a thermal migration process, including initiating a thermal migration instruction, marking memory data to be migrated according to information of an unused memory, executing data migration operation, monitoring a thermal migration process, and performing thermal migration rollback when migration is abnormal. The invention further discloses a corresponding method, equipment and a storage medium. By implementing the application, the efficiency, stability and service continuity of thermal migration are improved.

The embodiment of the invention provides a remote direct memory access method and equipment in a virtualization scene. The method comprises the following steps: acquiring a remote direct memory access RDMA request of a first virtual machine to a second virtual machine memory; calling a first virtualization RDMA device in an emulator of a host machine to which the first virtual machine belongs through a first preset drive in the first virtual machine, and converting the RDMA request into an Ethernet message; and transmitting the Ethernet message to a second virtual network card associated with a second virtualization RDMA device in an emulator of a host machine to which a second virtual machine belongs through a first virtual network card associated with the first virtualization RDMA device, so that the second virtualization RDMA device converts the Ethernet message into an RDMA request and transmits the RDMA request to a second virtual machine memory. According to the embodiment of the invention, the RDMA technology is realized in a virtual scene in a software mode, the method does not depend on whether a physical network card of a host machine has the RDMA capability or not, is not limited by resources by queues, and can support the live migration of the virtual machine.

The invention relates to a data pre-migration method and device of a virtual machine, a storage medium and electronic equipment. The method comprises the following steps: determining a target virtual machine to execute a live migration operation; determining target data located in a local disk of the current node and virtual machine data located in a shared storage in the data of the target virtual machine; migrating the target data to a local disk of a destination node of the target virtual machine; and under the condition that the target data is successfully migrated, migrating the virtual machine data of the target virtual machine to the shared storage of the destination node. The technical problem of long time consumption of live migration of the virtual machine is solved.

The invention relates to the technical field of server resource scheduling, in particular to a server virtualization integration system and method. The method comprises the following steps: executing a multi-dimensional reference pressure test on each NUMA node in a physical server cluster to generate physical node performance data; monitoring a virtual machine cache event of a tenant virtual machine in real time by utilizing the virtualization management platform, and determining tenant load snapshot data; evaluating the matching degree between the remote memory access demand of the virtual machine and the node localization supply capability according to the tenant load snapshot data, determining an optimal host migration target, and starting real-time migration of the virtual machine by the virtualization management platform to obtain a server migration integration process; and monitoring an abnormal state after migration in real time according to a server migration integration process so as to realize secondary forced scheduling integration request processing. According to the method, the optimal matching between the virtual machine and the physical node in the server is realized, the resource utilization efficiency is improved, and the cross-NUMA access overhead is reduced.

A method and apparatus for marking a dirty page during the live migration of a virtual machine, a back-end device, and a chip. The method comprises: receiving a current DMA write request of a target virtual function device; on the basis of the current DMA write request, determining whether to generate a current dirty page write request; if the generation of a current dirty page write request is determined, generating a corresponding current dirty page write request; if the previous dirty page write request of the target virtual function device has not been stored, storing the current dirty page write request; if the previous dirty page write request of the target virtual function device has been stored, determining, on the basis of a write address of the current dirty page write request and a write address of the previous dirty page write request, whether to merge the current dirty page write request and the previous dirty page write request; and if the merging of the current dirty page write request and the previous dirty page write request is determined, storing a merged dirty page write request, and if the merging of the current dirty page write request and the previous dirty page write request is not determined, outputting the previous dirty page write request to a post-stage module, and storing the current dirty page write request.

A process migration method includes a source host that copies a memory page of the to-be-migrated process to storage space of a first component of the source host in response to a received first migration indication; the source host sends the memory page of the to-be-migrated process to the destination host via a remote access system of the first component; and the destination host restores the to-be-migrated process based on the received memory page of the to-be-migrated process, to implement live migration of the to-be-migrated process. The remote access system is configured to perform data access on a remote host.

The embodiment of the invention provides a virtual machine dirty marking method, device and equipment and a storage medium, which are applied to a server, the server comprises a host and a programmable logic controller, and the programmable logic controller comprises a plurality of virtual machines; according to the method, the size of the occupied space of the target virtual machine can be determined firstly, the mapping relation between the bit and the page size in the host can be accurately determined according to the actual situation, then the bitmap space is reasonably determined, the problem that the bitmap space is distributed too large or too small is solved, efficient adaptation and accurate utilization of resources are achieved, and the user experience is improved. Resource consumption and cost are reduced, and the overall storage resource utilization efficiency of the server can be improved; according to the method and the device, the migration efficiency of live migration can be adjusted by adjusting the mapping relation between the bits and the page sizes, so that more flexible hardware marking is realized, and the user experience is improved.

The invention provides a virtual machine scheduling method, device and system, a storage medium and a program product, and relates to the field of cloud computing. The method comprises the following steps: identifying a source numa node of a first virtual machine to be migrated in a first computing node according to the total vCPU utilization rate of each numa node in the first computing node; under the condition that the target numa node capable of receiving the first virtual machine exists in the first computing node, migrating the first virtual machine to the target numa node; and under the condition that migration is not successful, first event information is reported to the cluster control node to trigger virtual machine live migration between the first computing node and the second computing node.

The present application provides a network configuration information processing method. For the process of virtual machine live migration, a function of delaying deletion of a virtual machine on an original node computer is realized on the network control plane, so that when a node in the network system sends a message for accessing the live migration virtual machine, even if the node does not refresh the corresponding relationship between the live migration virtual machine and the destination node computer, the message for accessing the live migration virtual machine can still be sent to the original node computer for relaying or processing, and the packet loss probability of the message for accessing the live migration virtual machine can be reduced in the process of virtual machine live migration and within a certain period after the virtual machine live migration is completed.

A smart memory module includes at least one memory device connected to at least one channel, a controller configured to control the at least one memory device, and a host interface circuit configured to perform peer-to-peer (P2P) communication with an external device, and to receive, from a host device, a live migration request. The controller is configured to perform, in response to the live migration request, a migration operation of transmitting buffer data to a target device through the P2P communication under a buffer-full condition.

The invention provides a page marking method, device and equipment, and the method can comprise the steps: receiving a memory operation request corresponding to a virtual machine in a live migration process of the virtual machine, the memory operation request being used for requesting to operate a target memory page; according to the memory operation request, operating data in the target memory page; in a first storage space corresponding to the virtual machine, the page identifier of the target memory page is updated to a dirty identifier, and the dirty identifier is used for indicating that data in the target memory page is updated. And the migration efficiency of the data in the target memory page is improved.

Provided in the embodiments of the present disclosure are a virtual machine live migration method, a physical host and a storage medium. The method comprises: a virtual machine monitor firstly acquiring service feature information that is fed back by an application program running on a virtual machine and providing a target service; and then, the virtual machine monitor determining a corresponding migration strategy on the basis of the service feature information, and using the migration strategy to migrate the virtual machine. In the method, a migration strategy determined by a virtual machine monitor on the basis of service feature information is obviously applicable to a target service. Therefore, the live migration effect of a virtual machine can be ensured and optimized. Moreover, the service feature information can be directly fed back to the virtual machine monitor by an application program, which, compared with the method of using the virtual machine monitor to perform detection, has low implementation difficulty and higher accuracy. Therefore, using the service feature information can further improve the rationality of the migration strategy determined by the virtual machine monitor, thereby ensuring the live migration effect.

Systems and methods are directed toward migration operations, such as live migration operations, associated with confidential computing environments. Responsive to a request to migrate data, a secure hypervisor may establish a secure communication channel to a network interface controller to pass one or more keys for accessing securely stored data. The secure hypervisor may generate a descriptor associated with a memory location of the data and then pass the descriptor to the network interface controller. As a result, encryption / decryption operations may be offloaded to the network interface controller, which may use the descriptor and key to migrate the data from a source location to a destination location.

A computing system may access a source device configured to store device traffic in a source device queue. The computing system may launch, by one or more worker nodes of a control plane of the computing device, a destination device. The computing system may transmit a source device state to the destination device. The control plane worker nodes may configure the destination device from the source device state. The computing system may instruct the source device to pause storing the device traffic to the source device guest memory. The computing system may store dirty page information in the computing system memory. The computing system may transmit the dirty page information to the destination guest memory. The computing system may instruct the destination device to resume storing the device traffic to the destination guest memory.

Embodiments described herein are generally directed to an improved workload submission handling strategy for workloads received during live migration and targeting VFs of a hardware accelerator. In an example, while performing a live migration of a source VM running on a source host to a destination VM of a destination host, a new workload targeting a VF of a first HW accelerator of the source host is identified by a HW status manager of the source host by trapping the workload submission channel. Based on a nature of the new workload, the HW status manager determines whether to transfer the new workload to the destination host. Responsive to an affirmative determination, the HW status manager causes the new workload to be submitted to a VF of a second HW accelerator of the destination host by incorporating information regarding the new workload within a migration stream associated with the live migration.

The invention relates to thermal migration for confidential computing environments. The system and method are directed to migration operations associated with a confidential computing environment, such as thermal migration operations. In response to a request to migrate data, the security hypervisor may establish a secure communication channel to the network interface controller to communicate one or more keys for accessing the securely stored data. The security hypervisor may generate a descriptor associated with the memory location of the data and then communicate the descriptor to the network interface controller. Thus, encryption / decryption operations may be offloaded to the network interface controller, which may use the descriptor and the key to migrate data from the source location to the destination location.

The invention relates to the technical field of virtual machines, in particular to a virtual machine live migration protocol authentication and data protection method which comprises a migration end configuration process, a migrated end configuration process and a migration process. The migration end carries out a migration end configuration process to obtain strategy configuration data of the migration end; the migrated end carries out a migrated end configuration process to obtain strategy configuration data of the migrated end; based on the strategy configuration data of the migration end and the strategy configuration data of the migrated end, the migration end and the migrated end enter a migration process so as to carry out double-end protocol authentication of the migration end and the migrated end, and after the double-end protocol authentication is passed, the migration data is migrated from the migration end to the migrated end, so that the safety protection of the migration data is realized. And the data migration performance is improved.

According to a method for processing virtual machine migration, in a case where idle resources on each single one of multiple physical hosts in a system do not meet a resource requirement from a virtualized network function (VNF) but total idle resources on the multiple physical hosts meet the resource requirement from the VNF, a virtual machine migration strategy is determined according to resource information about resources currently occupied on each of the multiple physical hosts and corresponding service information, and live migration may be performed on virtual machines.

The invention relates to the technical field of virtual machine live migration, in particular to an optimization method and system for achieving zero packet loss in the live migration process of a cloud platform virtual machine, and the method comprises the steps: adding an event publishing module in a Neutron service layer, pushing an event notification to a related OVS-Agent node through a message bus when the state of a port is changed, identifying event types based on port attribute pattern matching; the method has the advantages that by optimizing event processing and port binding logic, the service interruption time of the virtual machine in the live migration process is shortened, and the continuity and stability of services are improved; through plug-and-play network configuration and rapid flow table issuing, the packet loss rate in the live migration process is significantly reduced, and even zero packet loss can be realized, thereby improving the reliability of network transmission.

A device identifies a first entry at a virtual commit queue, the first entry including a command identifier and an opcode. The device determines, based on the opcode, whether a command is emulated by a virtual non-volatile memory fast (NVMe) controller or executed by a physical NVMe controller. The device inserts a second entry into a physical controller commit queue, the second entry including a command identifier and: an opcode (physical execution determination), or a placeholder command opcode (emulation determination). Later, the device identifies a third entry at the physical controller completion queue, the third entry including the command identifier. Based on the command identifier, the device retrieves the first entry from the virtual commit queue. The device inserts a fourth entry into the virtual completion queue, the fourth entry including the command identifier and: a result of emulating the command, or a result of executing the command by the NVMe controller.

The invention discloses a real-time migration system for a containerized RDMA network. The real-time migration system comprises a source host, a target host and a communication peer, under a software virtualization containerization RDMA network deployment mode; the source host records creation parameters carried in the RDMA resource creation request and sends the creation parameters to the target host; when the communication peer pauses the communication with the source host connection queue pair, the memory data is transferred to the target host; the target host creates the same RDMA resource according to the creation parameter; the target host synchronizes RDMA resource communication identification information of the newly created RDMA resource to the communication peer; and the communication peer pauses communication with the RDMA resource connection queue pair of the source host, and establishes communication with the RDMA resource on the target host after finishing final dump between the source host and the target host. The real-time migration system and the real-time migration method are completely compatible with the existing containerized RDMA network, and the communication efficiency and the performance isolation are not damaged.

The invention discloses a live migration method for a virtual machine without interruption and a virtualization system, and belongs to the technical field of cloud computing virtualization systems.The method comprises the steps that the virtual machine which is completely the same as a source node is created on a target node, and the state of the virtual machine is adjusted to be a pause state; querying a source node security group table item associated with the migration virtual machine, wherein the source node security group table item comprises a vswitch data plane flow table and a connection tracking table of a source node; migrating the source node security group table item from the source node to the target node; the virtual machine of the target node decompresses the received file, reads the file into a memory, and updates the vswitch data plane flow table of the source node; adding the connection tracking table of the source node and the updated vswitch data plane flow table of the source node to the vswitch data plane of the target node; and after the thermal migration of the virtual machine is finished, adjusting the state of the virtual machine of the target node to be running. According to the invention, when the virtual machine is subjected to thermal migration, the network flow is ensured to be uninterrupted, and the user experience of the service application of the virtual machine is improved.

A migration method and a migration system of a virtual machine are disclosed. The method includes: a virtual machine detecting whether a migration instruction is received, wherein the virtual machine runs on a first processor of a first host machine; the virtual machine calling and obtaining video memory data generated in the first processor if the migration instruction is detected; and the virtual machine migrating the video memory data to a second processor of a second host machine. The present disclosure solves the technical problem that a virtual machine using a GPU pass-through mode fails to perform a live migration between host machines in the existing technologies.

Provided is a method for managing a data migration operation, including creating, by a storage device, a read submission queue entry indicating a location of data at a source storage of the storage device to be copied from the source storage to a target storage, the read submission queue entry including a field including metadata including information for reading the data from the source storage.