9 results about "Disk mirroring" patented technology

The application belongs to the technical field of computer virtualization storage, and provides a method and system for detecting the integrity of a qcow2 virtual disk image file. The qcow2 file header is read, basic metadata is parsed, and the physical offset of the data cluster corresponding to the starting position of the virtual disk in the qcow2 file is automatically calculated. The data of a sector at the physical offset is read as a master boot record (MBR), and MBR parsing information is obtained. Whether the virtual disk uses a GPT partition scheme is determined according to the MBR. The GPT region is automatically located, parsed and verified, and GPT parsing information is obtained. The parsing information, check information and integrity detection information are summarized and output. The application can penetrate the mapping layer of the qcow2 format, directly locate and read the MBR or GPT region of the virtual disk, automatically complete structure parsing, CRC check and integrity judgment, and output the detection result in a clear form.

A method of “warm” migrating a virtual machine (VM) on a source host to a target virtual machine on a destination host. The method begins by mirroring contents of disk onto a target disk associated with the target VM. Transfer of the RAM contents is then initiated. Unlike live migration strategies where data transfer occurs at a high rate, the RAM contents are transferred at a low transfer rate. While the contents of the RAM are being transferred, a shutdown of the virtual machine is initiated. This operation flushes to disk all of the remaining RAM contents. Before the shutdown completes, those remaining contents, now on disk, are mirrored to the target disk. Once that mirroring is finished, the shutdown of the virtual machine is completed, and this shutdown is mirrored at the destination host. To complete the warm migration, the target virtual machine is then booted from the target disk.

The application discloses a virtual machine data backup method, device, program product, equipment and medium of a cloud computing management platform, relates to the technical field of computers, and comprises the following steps: generating a virtual machine snapshot; filtering out current change files from a disk image file of the virtual machine snapshot by scanning file system metadata of the disk image file, and determining current change data blocks that need to be backed up in an incremental backup mode by comparing target data blocks of the current change files with corresponding data blocks of reference backup data; the reference backup data is a basic backup data set used for incremental comparison; performing hierarchical compression processing on the current change data blocks; constructing a target storage directory in an object storage service according to virtual machine identifiers and backup task identifiers associated with the cloud computing management platform, and backing up the compressed data into the target storage directory. The application optimizes the backup data size and the backup time, and effectively improves the low-efficiency limitation of the backup function of the cloud computing management platform.

The application discloses a cloud service version updating method and device, equipment and a storage medium, and relates to the field of version updating, and comprises the following steps: acquiring a cloud disk created based on a disk image; the disk image is an image specially used for storing configuration files and a version to be updated; mounting the cloud disk and a host to be updated and connecting the operating system and the cloud disk after mounting are performed through a terraform tool, a disk symbol is allocated for the cloud disk after connection, and the disk symbol is modified according to the disk information and the configuration files corresponding to the host to be updated; the current process service running on the host to be updated is determined, the process corresponding to the current process service is locked if all the processes are in an unoccupied state, and the process is restarted to load the version to be updated after successful locking, thereby completing the updating of the cloud service version. Through cloud disk mounting, the application solves the transmission problem of large file packages, and can update the version of the currently running cloud service without the user's awareness and without occupying the host resources.

Provided are a method, apparatus, and device for generating a bare metal server Linux system image, and a memory medium. The method includes: analyzing a received bare metal server Linux system image generation request so as to obtain a target configuration parameter of a target bare metal server Linux system image to be generated and a target operating system model; selecting, from a redundant array of independent disks driver library, a target redundant array of independent disks driver that matches the target configuration parameter and the target operating system model; adding the target redundant array of independent disks driver to a boot file of a virtual machine to generate a target boot file; and exporting, from the virtual machine, a virtual machine disk image file containing the target boot file as the target bare metal server Linux system image.

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.

The embodiment of the present application provides a kind of data recovery method, device and electronic equipment of Docker container, which comprises: obtaining the disk image file related to Docker container, disk image file is segmented into multiple clusters, from the data in each cluster meets the first target cluster of the log file format of Docker container.Reorganization splicing is obtained to the second target cluster with predefined rule to the first target cluster.Replacement first data with second data and above steps are recycled until the log file of Docker container is recovered.Therefore, through the embodiment of the present application, when log file is misdeletion and metadata is unavailable, it can be based on the log file format of Docker container that the cluster meeting the log file format of Docker container is reorganized and spliced.To restore the log file of Docker container.Facilitate the running state of Docker container, application and the analysis of the abnormal problem that appears.

The invention provides a cloud mirror image construction method and device, equipment, a medium and a program product, and relates to the technical field of computers.The cloud mirror image construction method comprises the steps that a mirror image disk is created, and a globally unique identifier partition table is configured for the mirror image disk; wherein the globally unique identifier partition table is compatible with a first starting mode; creating a hard disk partition compatible with a second starting mode in the global unique identifier partition table; creating a virtual machine; loading a disk mirror image file of the mirror image disk and an operating system installation source according to the virtual machine so as to install the operating system in a first startup mode; in the operating system, setting a second startup mode identifier for the hard disk partition; installing a unified boot boot program for the second boot mode to a main boot record of the mirror disk; generating a unified bootstrap program configuration file to complete the construction of a cloud mirror image; according to the method provided by the invention, the effect of improving the deployment efficiency of the cloud mirror image in the hybrid hardware environment is achieved.

The invention belongs to the technical field of computer virtualization storage, and provides a method and system for detecting the integrity of a qcow2 virtual disk mirror image file, a qcow2 file header is read, basic metadata is analyzed, and the physical offset of a data cluster corresponding to the initial position of a virtual disk in a qcow2 file is automatically calculated; reading data of a sector from the physical offset as a master boot record (MBR) to obtain MBR analysis information; judging whether the virtual disk uses a GPT partition scheme or not according to the MBR; automatically positioning a GPT area, and analyzing and verifying the GPT area to obtain GPT analysis information; and summarizing and outputting the analysis information, the verification information and the integrity detection information. According to the method, a mapping layer in a qcow2 format can be penetrated, the MBR or GPT region of the virtual disk can be directly positioned and read, structural analysis, CRC (Cyclic Redundancy Check) and integrity judgment are automatically completed, and a detection result is output in a clear form.