16 results about "Continuous data protection" patented technology

The invention discloses a continuous data protection method, device and equipment based on a Linux complete machine and a storage medium, and the method comprises the steps: when a backup instruction is received, creating a backup plan, and determining a to-be-backed-up Linux system and an NFS storage end for backup processing; registering a corresponding request interface in the block device of the Linux system to be backed up, and intercepting the received BIO request based on the request interface; the request type of the BIO request is judged, and the request type comprises a write request and other requests; when it is judged that the request type is a write request, whether a backup instruction is executed or not is determined according to the BIO request, and when it is determined that the backup instruction is executed, the Linux system to be backed up is backed up to the NFS storage end. By directly intercepting a block device write request on a kernel level, realizing incremental backup based on a two-dimensional mapping table and combining a metadata management mechanism, the method has the advantages of improving backup universality, reducing system overhead and realizing block-level incremental backup.

One example method includes performing delta operations to protect data. A delta queue is provided that allows a replica volume to be rolled forwards and backwards in time. When rolling the replica volume forward, an undo delta is created such that the replica volume can be moved backwards after being moved forward. When rolling the replica volume backwards, a forward delta is created such that the replica volume can be moved forwards after being moved backwards.

Example embodiments relate generally to systems and methods for continuous data protection (CDP) and more specifically to an input and output (I / O) filtering framework and log management system to seek a near-zero recovery point objective (RPO).

The application discloses a generation synchronization method and system of a data volume, relates to the technical field of computers, and is applied to a target cluster, wherein the target cluster comprises a management server for cluster management and a plurality of to-be-synchronized controllers for executing cluster services; through interaction between the management server and the plurality of controllers, generation synchronization of the plurality of controllers about the same data volume is realized, and meanwhile, the creation time of the configuration controller about the continuous data protection of the data volume is taken as a benchmark to ensure generation consistency of all the controllers, thereby solving the technical problem of generation synchronization performance decline of high-density snapshots and achieving the technical effect of improving generation synchronization performance.

The application discloses a network-based scalable continuous data protection method, comprising the following steps: a client node intercepts a local write operation request and sends the request to a server system through a network; a monitoring module of the server receives the request and forwards the request to a data storage module, the module appends data to one or more physical block devices in a received order; when a current device storage space is exhausted, the monitoring module automatically switches to a next available device to continue appending data, thereby realizing dynamic expansion of the storage capacity. The method solves the problem that a traditional CDP system cannot realize recovery at an arbitrary time point due to the limitation of fixed storage space through a seamless expansion mechanism without interrupting service.

Changes made to a database table are accumulated, in durable storage, and snapshots of partitions of the table are obtained. For successive snapshots of a partition, the system accesses a previous snapshot, applies changes from the accumulated changes, and stores the updated snapshot to a durable data store. The accumulated changes and the successive partition snapshots are made available to restore the database to any point in time across a continuum between successive snapshots. Although each partition of the table may have a backup snapshot that was generated at a time different from when other partition snapshots were generated, changes from respective change logs may be selectively log-applied to distinct partitions of a table to generate an on-demand backup of the entire table at common point-in-time across partitions. Point-in-time restores of a table may rely upon a similar process to coalesce partition snapshots that are not aligned in time.

The data processing method and the electronic equipment of the application relate to the technical field of data processing, and through responding to a snapshot instruction, a data protection identifier is generated in real time and its mapping relationship with a list file is updated, so that the creation of a transient snapshot without freezing a memory table and copying a data block is realized, and the write blocking and performance jitter problems caused by the copy-on-write mechanism are overcome; through directly associating the real-time generated data protection identifier with to-be-written data, the accurate binding of data and identifier information is ensured, which provides a basis for efficient management of data; through selecting different storage strategies based on the data size and recording corresponding index information in the data file, the metadata size is compressed, the problem of excessive consumption of storage resources caused by recording full-amount operation metadata is solved, and the effect of high-performance writing and low storage overhead while ensuring continuous data protection capability is realized.

Continuous data protection, including sending, to a target data repository from a source data repository, metadata describing one or more updates to one or more datasets stored within the source data repository; generating, based on the metadata describing the one or more updates to the one or more datasets, an ordered log of metadata describing an ordered application of the one or more updates to the one or more datasets; and generating, on the source data repository and based on the ordered log of metadata, the one or more datasets in accordance with the one or more updates corresponding to a specified point in time.

The application discloses a KVM automatic emergency recovery method based on a continuous data protection technology, a backup module performs continuous data protection on a source host, generates a backup snapshot point at a historical moment, and uniformly manages the backup snapshot point; a trigger module detects the latest backup snapshot point, creates / updates an emergency hot backup virtual machine based on an emergency pre-configuration template, and the virtual machine is in a shutdown standby takeover state; a listening module detects whether a source host business application and network connectivity with the source host exist faults or abnormities; and an emergency starting module performs a starting operation on the emergency hot backup virtual machine, provides services outwardly, takes over the source host business, and the like, wherein the application sets corresponding emergency virtual machine configuration information according to source host parameters for backup protection by pre-setting an emergency pre-configuration template, can shorten an emergency recovery configuration time if a fault occurs, simplifies an emergency recovery operation process, shortens a business interruption time, and guarantees continuous business operation.

The invention discloses a virtual machine data transmission method and device, equipment and a medium, and relates to the technical field of cloud computing, and the method comprises the steps: judging whether to-be-transmitted data is hot data or not after a virtual machine starts continuous data protection; the hot data is data of which the virtual machine disk block access frequency is greater than a target frequency threshold; if the data is hot data, reading and transmitting the first to-be-transmitted data in real time; the first to-be-transmitted data comprises a hot data input / output log and a bitmap in the cache pool; if the data is not the hot data, whether a metadata mark exists in the reflink configuration file or not is judged, and corresponding second to-be-transmitted data is transmitted according to a corresponding judgment result; the metadata mark is a mark used for identifying whether the virtual machine has an effective reflink snapshot chain or not; in the data transmission process, the transmission strategy of the data to be transmitted is adjusted according to the health degree of the virtual machine, so that data transmission is completed. The problem that the performance of the virtual machine is reduced is solved.

The application relates to the technical field of virtual machines, and particularly discloses a continuous data protection method and device, electronic equipment and a storage medium, wherein the method comprises the following steps: temporarily creating a copy image file and taking the copy image file as a disk medium of a virtual machine; starting the virtual machine, performing data operation and recording based on continuous data protection, and simultaneously performing data initialization operation; after the data initialization operation is completed, switching the disk image file to the disk medium of the virtual machine; performing backfill processing on the disk image file; performing data operation and recording based on continuous data protection; the method temporarily creates a copy image file before starting the virtual machine, takes the copy image file as the disk medium used by the virtual machine in the initial stage, and simultaneously performs data initialization operation, so that the virtual machine does not need to pause running to record a data source in the initial stage, the starting rate of the virtual machine can be greatly improved, and the problem of initialization time consumption existing in continuous data protection is effectively solved.

This application provides a method, apparatus, device, medium, and product for continuous data protection, relating to the field of data processing technology. The method involves acquiring write input / output requests from a target device and copying the original request and the copy request. The original request is submitted to the target device, and write records are generated based on the copy request. This ensures both normal business processing by the target device and complete recording of data changes. Next, the write records are cached in a data cache and aggregated when preset batch processing conditions are triggered. This avoids a large number of fine-grained write operations directly impacting the storage system, reducing the inefficiency of data protection caused by frequent disk access and network transmission. Subsequently, the aggregated batch is first persistently stored in a local cache device, and then sent to a remote distributed object storage cluster after successful batch persistence. This improves storage I / O operation efficiency and enhances the reliability and flexibility of data protection.

The invention relates to the field of cloud computing and data backup, and particularly provides a cloud desktop virtual machine disk incremental backup implementation method and device, and the method comprises the following steps: S1, calling a libvirt interface to create checkpoint C1 and recording a current disk bitmap B1 during the first full backup; s2, executing incremental backup at the T2 moment; s3, a two-stage COW chain of a scratch file is adopted; s4, introducing a deduplication index module; s5, backup consistency is guaranteed; s6, strategy arrangement; and S7, recovering the process. Compared with the prior art, efficiency and resource bottlenecks caused by a traditional virtual machine file disk and full backup can be solved, and continuous data protection of minute-level RPO and low network occupation is achieved.

This invention belongs to the field of data protection technology, specifically referring to a continuous data protection method based on a multi-cloud architecture. The technical solution is a continuous data protection method based on a multi-cloud architecture, comprising the following steps: constructing a distributed continuous data protection system across multiple cloud nodes, each cloud node including a data capture module, a log storage module, a metadata management module, and a cross-cloud synchronization module; when the virtual machine disk is in continuous data protection mode, the data capture module intercepts write I / O operations of the virtual machine disk at the virtualization layer, extracts the modified disk data to generate a data change block, and simultaneously generates corresponding metadata records; improving system reliability by synchronizing data logs across multiple cloud nodes, so that data can still be recovered from other cloud nodes when a single cloud node fails.

The invention discloses a generation synchronization method and system of a data volume, and relates to the technical field of computers, the generation synchronization method of the data volume is applied to a target cluster, and the target cluster comprises a management server used for cluster management and a plurality of controllers to be synchronized used for executing cluster services. Through the interaction between the management server and the plurality of controllers, the generations of the plurality of controllers about the same data volume are synchronized, and the generations of all the controllers are ensured to be consistent by configuring the creation time of continuous data protection of the controllers about the data volume, so that the technical problem that the generations of high-density snapshots are reduced in performance is solved, and the reliability of the high-density snapshots is improved. The technical effect of improving the generation synchronization performance is achieved.