19 results about "Fast recovery" patented technology

The invention discloses a computing power resource dynamic slicing and isolation method for an artificial intelligence target range, and the method comprises the following modules: S1, business feature perception and dynamic resource slicing: carrying out the analysis and modeling of an artificial intelligence attack and defense task through a mechanism, and mapping a task demand into a corresponding computing power slicing specification; s2, a driving-level video memory firewall, which monitors the video memory usage behavior of the virtual instance in real time on a driving layer of an execution node, and prevents attack behaviors such as abnormal occupation of the video memory; and S3, carrying out atomized rollback based on the model state of the shared memory. According to the mechanism, rapid recovery of the environment is realized through page table resetting. The method is oriented to an artificial intelligence target range, and the problems of static low efficiency, insufficient safety and isolation, lack of a quick recovery mechanism and the like of resource scheduling are solved through the mechanisms.

The application provides a quick recovery method for file system error caused by abnormal power-off. The method comprises: executing power-on starting flow to determine whether the file system has error, if error occurs, entering abnormal recovery flow; in response to the instruction of entering abnormal recovery flow, determining whether the TAB file is abnormal, if abnormal, continuing to determine, if the TAB_A file checksum verification error, deleting and rebuilding the TAB_A file, copying the TAB_B file to the TAB_A file, and ending the current flow; if the TAB_B file checksum verification error, deleting and rebuilding the TAB_B file, copying the TAB_A file to the TAB_B file, and ending the current flow; if the TAB file is normal, entering the clearing fault user file flow, deleting the corresponding entry information in the TAB_A file and the TAB_B file after completing the flow, and ending the abnormal recovery flow. According to the application, the problem of affecting system performance of the existing abnormal power-off recovery method applied to the file system can be solved.

The application discloses a kind of translation lookaside buffer table entry processing method, system, medium and product, applied to processor technical field, comprising: when process switching, determine the non-critical table entry corresponding to the process before switching in translation lookaside buffer, obtain target non-critical table entry;The target non-critical table entry is stored in the first cache corresponding to processor core, and the target non-critical table entry is deleted from the translation lookaside buffer;The recovery deadline corresponding to the process before switching issued by operating system is acquired;Based on the recovery deadline, before switching back to the process before switching, the target non-critical table entry is written back to the translation lookaside buffer from the first cache.This way, in the case of guaranteeing the process before switching fast recovery, the hit rate of translation lookaside buffer table entry can be improved, and then the processor performance is improved.

This invention relates to the field of database testing technology and discloses a database fuzzing method based on copy-on-write. The method includes: initializing a persistent layer to obtain a baseline storage state; creating a temporary layer and associating it with the persistent layer to form a union storage view; during test case execution, redirecting write operations to the temporary layer via copy-on-write, while read operations are read from either the temporary or persistent layer depending on whether the data exists; after testing, deleting and rebuilding the temporary layer to quickly restore the initial state; and repeating this process until all test cases are completed. This application constructs a two-layer storage structure consisting of a persistent layer and a temporary layer, recording all test changes in the temporary layer. After testing, only deleting and rebuilding the temporary layer is needed to quickly reset the repository, avoiding a complete initialization process and significantly improving the efficiency of database fuzzing.

Embodiments of the present application relate to the field of cloud computing, and provide a heterogeneous computing power instance scheduling and state management method, device, medium and chip, comprising: receiving a state change request of a target heterogeneous computing power instance; if it is a stop request, triggering a state saving process corresponding to the target heterogeneous computing power instance to perform a snapshot operation on a root file system of the target heterogeneous computing power instance before releasing heterogeneous computing power resources, and recording snapshot metadata corresponding to the snapshot operation; if it is a start request, determining a recovery node based on the snapshot metadata, performing dynamic environment reconstruction and recovering the root file system, and after the root file system is recovered, allocating heterogeneous computing power resources to the target heterogeneous computing power instance and starting the target heterogeneous computing power instance. The present application can reduce the cost of idle computing power and the cost of environment reconstruction, realize on-demand start and stop, rapid recovery and environment consistency reconstruction, and reduce resource fragmentation, recovery failure probability and operation and maintenance scheduling overhead.

The application discloses a high-speed snapshot and recovery-based operating system fuzzing method, which comprises the following steps: starting a target operating system and completing environment initialization; generating an initial state snapshot of the operating system in a state after the environment initialization is completed, and storing the initial state snapshot; reading the initial state snapshot from the storage before executing each test case, and restoring the operating system to the state recorded by the initial state snapshot; after the restoration is completed, generating a test case, injecting the test case into the operating system for execution, and recording the execution result of the test case. Through complete state capturing and millisecond-level fast restoration, the application realizes accurate resetting of a kernel fuzzing environment, eliminates state pollution of previous test cases, and improves vulnerability reproduction stability and test efficiency.

The application provides a file processing fault-tolerant method and system of a space embedded file system, and the fault-tolerant method specifically comprises the following steps: in response to a start signal, performing multi-level environment detection and fault self-recovery processing on the space embedded file system; in response to a file writing request, generating a corresponding atomic transaction log, and performing transaction submission or fault rollback in combination with redundant storage and writing verification; in response to a file reading request, performing layer-by-layer verification on the file reading request to feed back valid data or report an exception and trigger data recovery; in response to a continuous running state of reading and writing parallel processing, periodically collecting system data, performing hierarchical code scanning verification on the system data, and triggering classified fault-tolerant processing according to the verification result. The application realizes autonomous prevention, detection and rapid recovery of faults of the space embedded file system by constructing a deep collaborative fault-tolerant mechanism from physical storage to logical data, and guarantees the continuity and reliability of data transmission and storage of the space embedded file system.

A computer system can initialize one or more workloads. The computer system can operate in an enhanced mode and a regular mode. The enhanced mode includes an adjustment to a pacing setting and an adjustment to a group availability target for executing the one or more workloads. The computer system can identify that the enhanced mode is enabled during a system boot. The computer system can identify that the pacing setting is operating in the regular mode. The computer system can dynamically increase the pacing setting. The increase in the pacing setting can cause the one or more workloads to increase processor utilization of the computer system. The increased processor utilization can generate concurrent processing of the one or more workloads. The computer system can determine an end of the enhanced mode and reset the pacing setting.

The application provides a file management method based on a soft core on-board high-speed solid storage, which comprises the following steps: dividing a solid storage logical space into a metadata fixed block area and a data block area, dividing the data block area according to a fixed block size and managing the data block area according to a block number; establishing a super block, a directory table, a file table, a free block linked list and a file block number sequence of each file in a memory; serializing the above structure to generate a metadata mirror, writing the metadata mirror into the metadata fixed block area and saving multiple redundant copies; when power is restored, reading the multiple copies to make a consistency judgment, selecting an effective mirror to analyze and rebuilding a memory index structure. Through integrated storage of metadata and data, the application avoids the life and reliability risks caused by storing metadata in an independent and vulnerable medium in a traditional scheme; a multiple-copy redundancy and consistency judgment mechanism is adopted to realize quick recovery after power failure; through a rebuilding mechanism of the memory index, the consistency of a file system state and physical data is ensured, and the reliability of an on-board storage system is improved.

The application discloses a cloud computing server data backup and quick recovery system and method, relates to the technical field of cloud computing data protection, and comprises a service sensing agent, a metadata reconstructor and an intelligent recovery scheduler. The service sensing agent establishes an association graph of service core functions and underlying data blocks during application running, and maintains data block priority labels. The metadata reconstructor monitors and analyzes an incremental snapshot chain, combines early infrequently accessed snapshots to generate a virtual full-amount base point, and reconstructs metadata index relations. After receiving a recovery instruction, the intelligent recovery scheduler analyzes the reconstructed metadata chain, determines a recovery priority according to the association graph, preferentially recovers key data, and integrates a service preheating mechanism to start a computing instance in advance. The method corresponds to the above system to perform backup, metadata reconstruction and priority recovery steps. The application realizes quick service recovery, improves data recovery pertinence and user experience, and guarantees business continuity.

This invention relates to the field of data storage and disaster recovery backup technology, specifically disclosing a database recovery system based on ZFS snapshot cloning and container vertical mounting. The system includes: a metadata extraction module for extracting the database type and version number from the backup task; a storage cloning module for creating a ZFS snapshot based on the backup set and generating a readable and writable clone volume; a local mounting module for mounting the clone volume to the host machine's local directory; a container orchestration module for starting a database container of the corresponding version according to the database version number and mapping the local directory to the database data directory within the container; a service detection module for detecting the database service status and outputting a success signal; and a resource reclamation module for destroying the container and deleting the clone volume after the task is completed. This invention achieves rapid database recovery and automated verification through ZFS copy-on-write cloning and container vertical mounting technology, and supports the on-demand creation and destruction of the verification environment.

Provided are a service configuration method and device, a network device, and a storage medium. In the method, a network device obtains a backup first path before a path carrying a first service fails; determines a mapping relationship between the first failure point, the first service, and first channel configuration data based on the first path; and selects first channel configuration data corresponding to the first service and the first failure point to configure a new path, i.e., the first path, of the first service when the path carrying the first service goes out of service at the first failure point, thereby achieving fast recovery of the first service.

The application relates to a self-recovery control method, device and equipment of a medium and low voltage power grid, and a storage medium. The method comprises the following steps: collecting electrical and non-electrical multi-modal operation data before and after a fault to construct reference and monitoring data sets, extracting electrical and non-electrical characteristics, identifying abnormal mutation characteristics through comparison and establishing a fault characteristic set, inputting the fault characteristic set into a trained fault classification model to output fault information; constructing a mixed integer programming model with the minimum power loss and the maximum load recovery as the targets, substituting the fault information and a power grid network model to obtain a cross-level recovery strategy, combining the fault characteristic set and the fault information to complete fault isolation, generating fusion control instructions with the maximum load recovery and the most stable voltage as the targets, and finally executing the cross-level recovery strategy and the fusion control instructions to realize power supply recovery. The method can realize fast recovery and stable operation of the power grid, and simultaneously considers preventive maintenance and life cycle management.

The embodiment of the specification discloses a data reporting method and device, a storage medium and a terminal, which realizes stream processing by converting batch data into a structured event stream, adopts a logical double-channel architecture to simultaneously submit events to a main processing channel and a backup cache channel, wherein the main channel is responsible for real-time reporting and updates a globally persistent progress water line after each success to accurately mark the processing boundary; the backup channel stores a complete data copy. When the main channel fails, the system queries the water line and locates the accurate playback starting point in the backup channel according to the water line, and automatically reads the event copy for continuous transmission. The mechanism ensures data reliability through double-channel redundancy, and cooperatively realizes accurate and rapid recovery of breakpoints relying on the water line, finally guaranteeing the efficiency of data processing and system high availability.

The present application relates to a kind of OLT dual-homing service fast recovery method and device.The method part mainly includes: the completion of corresponding rule of main OLT and backup OLT is issued, triggers the establishment of user table;Complete the synchronization of user table on main OLT and backup OLT;When detecting PON port link exception on current main OLT, service switching of main OLT and backup OLT is carried out;After service switching is completed, corresponding user table announcement is triggered, and free ARP request message is sent to convergence switch agent actively, so that convergence switch updates user side ARP information.The present application provides the method for managing and real-time synchronization of user table on OLT, for OLT TypeB dual-homing protection networking scene, OLT sends free ARP table by proxy user, to solve the problem that convergence switch cannot quickly update ARP table, and then reach the effect of user three layer service fast recovery after OLT internal PON link protection switching.

The present invention relates to a method for a terminal, comprising the steps of: detecting radio link failure (RLF) for a master cell group (MCG) among the MCG and a secondary cell group (SCG), in which dual connectivity (DC) is set for the terminal; transmitting a first radio resource control (RRC) message to the SCG if at least one condition for transmitting the first RRC message including information indicating the RLF for the MCG to the SCG is satisfied; if a second RRC message including information related to a target cell is received from the SCG, performing a procedure for establishing a connection with the target cell on the basis of the information related to the target cell; and identifying connection failure with the target cell, wherein first information about the RLF for the MCG is stored in an RLF report, and second information about the connection failure is additionally stored in the RLF report in which the first information is stored.

This invention discloses a highly efficient and rapidly recoverable Laconic inadvertent transmission protocol, dividing the protocol into a main part and an extension part. The main part includes system initialization, database digest generation, message encryption, decryption cache generation, and a message recovery phase. The system initialization phase requires execution by a trusted third party. In subsequent phases, the protocol operates between two parties, referred to as the receiver and the sender. The receiver holds the database, and the sender holds two messages and a selection index. After the protocol completes, the receiver can recover the message without knowing any information about the other message. The extension part includes digest update, decryption cache update, PSI receiver encoding, and PSI sender encoding steps. This invention significantly reduces the computational overhead for the receiver when decrypting and recovering messages, solving performance bottlenecks. It supports efficient database updates, has a flexible structure, and wide applicability.