159 results about "Disk mirroring" patented technology

The invention provides a continuous on-line transferring data backup method of a virtual machine and a device thereof. The method comprises the steps of updating the virtual machine memory data in a primary host machine and the data block in a virtual disk image file in a network storage according to the running of an embodiment of a primary virtual machine, and sending the updated virtual machine memory data to a backup host machine; temporarily stopping running the embodiment of the primary virtual machine, locking the state of the data block in the virtual disk image file through a locking operation to obtain the light-weight snapshot of the virtual disk image file, and recovering the running of the embodiment of the primary virtual machine, wherein the virtual disk image file is used for the backup host machine to perform a rollback operation. Through the above processing, the light-weight snapshot of the embodiment of the invention only occupies a little memory space. In addition, a technical scheme of the embodiment of the invention does not need to transmit lots of data, and is capable of quickly establishing the light-weight snapshot and improving the performance of the virtual machine.

A disk is segmented into a first data segment and a secondary data segment. The secondary data segment stores a logical mirror of the first data segment of another disk. Fast access to data stored on the disk is provided by partitioning the disk such that the first data segment includes the fast tracks of the disk and the secondary data segment includes the slow tracks of the disk and forwarding all data requests to the first data segment. Upon detecting a failure, the logical mirror of data stored in the first data segment of the failed disk is accessible from the secondary data segment of a non-failed disk. The first data segment can be rebuilt quickly on another disk from the logical mirror stored in the secondary data segment.

A method, apparatus and program storage device for providing intelligent copying for faster virtual disk mirroring is disclosed. The present invention provides a mirrored virtual disk by copying on a first virtual disk to a mirrored virtual disk without copying uninitialized regions of the first virtual disk.

The invention provides a mirror image snapshooting based on virtual machine backup system which is used for backing up virtual machine information in a virtual platform. The backup system comprises a backup server, a virtual management module, a mirror image snapshooting module and a snapshot comparison module, wherein the backup server is used for storing backup information of at least one virtual machine; the virtual management module is used for selecting the virtual machines required to be backed up; the mirror image snapshooting module is used for creating snapshots for disk mirror images of the virtual machines; and the snapshot comparison module is used for judging whether backup records of the selected virtual machines exist in the backup server and comparing the existent backup records with the created snapshot information if the backup records exist to store and back up differential information in the backup server. According to the system, the mirror image snapshooting module is utilized for snapshooting the virtual machines as needed, and the differential information is quickly extracted for backup storage when the mirror image snapshots of the virtual machines are not the same as the backup information, so that the utilization efficiency of mirror image storage is improved. Furthermore, the invention provides a backup method.

This invention belongs to the SAN technology field of storage area network, the character is: it organizes the frontal server in SAN and excrescent DRAM memory resources in the object node server together to form a high speed virtual hardware TH-SSD, and gives users the same read-write connect of normal disk. This method uses virtual technology to project the primary dispersive memory resources to a continuous virtual disk address spaces, all the data requests to TH-SSD from front are the request to virtual disk. Factually, it expends the usable virtual disk spaces because of using expending memory technology of X86 platform; and it ensures date integrality in TH-SSD because of using the image strategy with double log and double copy; and it realizes the no gap supporting to FC SAN and IP SAN, and makes TH-SSD can good work not only in fiber-optic network, but also in Ethernet.

The invention discloses a disk monitoring system and method. The system comprises a disk monitoring display module, a CPLD (Complex Programmable Logic Device) or FPGA (Field Programmable Gate Array) module, a disk interface module, an SAS (Statistical Analysis System)/SATA (Serial Advanced Technology Attachment) transmission module and an NVME transmission module. After the method and the system are started and electrified, a disk detection module carries out detection distinguishing on the type and the amount of connected disks. The system has the advantages that different types of disk states are monitored, monitoring functions are comprehensive and uniform, an implementation way is simple and reliable and clients can conveniently check.

The present invention provides a technical solution for an easy, highly reliable and secure out-of-band management of a remote computer with low cost of facilities. The present invention comprises a webcam which is used as a lightweight video sniffer, an emulator of keyboard and mouse, a mirror of remote disk which contains software resources and writable data file, a mirrored agent which runs on the computer which will be controlled remotely and render output of captured screen shot, and an assistant device which connects to a remote console and bridges an out-of-band management for the controlled computer. In the present invention, the controlled computer can be diagnosed remotely by a keyboard or a mouse with a mirror of remote software resources when the computer suffers from various kinds of problem, even when the whole Local Area Network (LAN) where the computer resides in is isolated from the remote console.

The present invention, pertaining to the field of communication, discloses a method for realizing fault recovery and data backup, a system and an apparatus thereof. Wherein, the method comprises the steps of starting a recovery tool, the recovery tool loading a customized root file system, establishing a pre-boot execution environment (PXE) support service, a file transmission service and a disk image management service, wherein, the PXE support service and the file transmission service are used for supporting the device to be recovered to realize the starting of an operating system through a network, and the disk image management service is used for performing disk image backup and/ or a recovery operation to the device to be recovered; after receiving an information that the starting of the operating system through a network by the device to be recovered is successful, remotely logging in the device to be recovered, and performing disk image backup and/ or a recovery operation to the device to be recovered by the disk image management service. When the device to be recovered is not configured with a CD-ROM, a display and a keyboard, the fault recovery of the device can be realized rapidly by using the method, and also the data backup is realized, therefore, time cost by the fault recovery of the device to be recovered is greatly shortened.

The invention discloses a virtual machine data backup method and system. The virtual machine data backup method comprises the steps that a local host receives a read-write request of a virtual machine, performs read-write operation on a local virtual disk based on the read-write request and sends a write-request to a backup host; the backup host receives the write request, and performs write operation on a backup virtual disk based on the write request to acquire a backup virtual disk image; and the backup host acquires an incremental snapshoot generation instruction and generates an incremental snapshoot on line based on the incremental snapshoot generation instruction and the backup virtual disk image. According to the virtual machine data backup method, the incremental snapshoot can be generated on line on the backup host, data backup from the local host to the backup host does not need to be interrupted, and disk IO of the local host cannot be affected.

The invention discloses a management method and a system for disk mirror images. The method comprises establishing source disk mirror images on a plurality of shared storage devices in advance, then establishing the disk mirror images in a breast mode, locally establishing the disk mirror images on each shared storage device according to the source disk mirror images on each shared storage device, and lastly, responding to an establishing request of a virtual machine, and providing established disk mirror images to the virtual machine. Therefore, time required for copying the disk mirror images in establishment of the virtual machine can be reduced. When the virtual machines are established in large-scale, the plurality of shared storage devices can share the disk mirror images based on a virtual machine request, average time used by copying mirror image files is greatly reduced, disk mirror images of a resource pool are accessed at any times, and efficiency for establishing the virtual machines can be improved. Under the condition of sufficient resource pool quota, 'zero delay' of establishment of the mirror images can be achieved.

The invention discloses an HSS (home subscriber server) master-slave management method to guarantee reliability and stability of HSS equipment. The method includes in a system configuration stage, creating magnetic discs identical in size in an HSS master node and an HSS slave node respectively for distributed replicated block device (DRBD) synchronization to form a magnetic disk mirror image area; in a system running stage, mounting a mounting point of the magnetic disc mirror image area on the HSS master node, enabling data generated by the HSS master node to be backed up in the magnetic disc mirror image area in real time, monitoring a running state of the HSS master node in real time, when the circumstance that the running state of the HSS master node is abnormal is determined, switching a service to the HSS slave node and mounting the mounting point of the magnetic disc mirror image area on the HSS slave node. By the HSS master-slave management method, timely switching to the HSS slave node can be realized when the HSS master node is in a failure, and real-time synchronization of data after switching can be guaranteed.

The invention discloses a system and a method for deploying application service to a cloud-storage virtual machine, wherein the system comprises node storage equipment and mobile storage equipment, wherein the node storage equipment is connected through a network, the mobile storage equipment is locally connected with the node storage equipment, and the application service and the data of the application service to be deployed into the virtual machine of remote service equipment are written into the mobile storage equipment; the node storage equipment is provided with a plurality of pieces of virtual equipment, and the disk mirroring of the virtual machine is mapped to one piece of virtual equipment; and the connected mobile storage equipment is identified as a subarea of a local hard disk, and files on the subarea are copied into the corresponding virtual equipment. Through the invention, the time delay and the failure of data transmission due to the network can be avoided in the mode of local deployment, so that the application service is more convenient and reliable to deploy.

The present invention provides a network storage access method which is suitable for distributed computer systems. The network storage access method consists of a client module BSANC and a server module BSANS and the method comprises the steps of a client computer being powered up, the BSANC being initialized automatically, establishing virtual storage device interfaces, operation commands such as read, write and the like of a local access disk are packaged into transmission messages and the transmission messages then being sent to a server of a network, BSANS module on the server operates the virtual hard disk files according to logic sector numbers, converting physical sector numbers of the client computer into logic sector numbers of the server, finding corresponding positions from the disk mirroring files, returning the content of the blocks corresponding to the positions back to the client computer, and if the operation is writing, writing the content of the write requirement into the position.

The utility model provides a method and device to install the operating system in the batch quantity. The method comprises step 1: configure the generation strategy of the identity code clusters on the installation server, thus the identity code clusters can uniquely identify the type of the terminal; step 2, make the installed terminal upload the mirror documents in the local disk onto the installation server, in the meantime, use the identity code clusters for the installed terminal to identify the mirror documents wherein; step 3, make the idle terminals for installation show the identity code clusters, so that the installation server can search and install the corresponding mirror documents into the idle terminals as per the specific identity code clusters. The utility model is not restricted to the types of the operating system and the terminals, also, the configuration of the installation server is very easy and convenient, thus speeding up the batch configuration of the equipment and greatly relieving the pressure of the engineering service.

The invention relates to the technical field of cloud computing and cloud storage, discloses a data integration method and system for a heterogeneous desktop cloud platform, and aims to deepen the data integration between heterogeneous clouds. The method includes the steps that a user data virtual-disk image which is exclusively used for storing private data and modifying data is configured for each cloud host, and meanwhile a shared virtual disk image which is exclusively used for merging the same user' data on different clouds is mounted in the virtual disk of a background server cluster; for the user data, which can be shared in the user data virtual-disk image, corresponding to the cloud host i which the user has in the desktop cloud A, the desktop cloud A reads the user data, which can be shared, to a memory, and then writes the user data into the shared virtual disk image; after the same user logs in the cloud host j which belongs to the desktop cloud B, the shared virtual disk image is read, and the user data which can be shared is written into the user data virtual-disk image corresponding to the cloud host j so as to complete sharing of the data.

The invention discloses a method for obtaining types and versions of virtual machine operation systems. The method comprises the following steps of: obtaining a virtual machine identifier of a target guest virtual machine and determining the target guest virtual machine at a virtualization platform interface according to the virtual machine identifier; determining a virtual disk mirror image file carried by the target guest virtual machine; loading the virtual disk mirror image file to a host machine/or management domain; and analyzing operation system type and/or version information of the target guest virtual machine from the virtual disk mirror image file loaded in a memory of the host machine/management domain. According to the method, operation system type and version obtaining can be carried out on different virtual machines or different types of virtual machines, the operation does not need to start up a target computer and is independent of application programs of the target computer, the application programs can be used in different operation systems, resources of the target computer is not consumed, and the target computer does not perceive the operation.

The invention discloses a cloud host establishing device. The device is reserved in calculating equipment, and the equipment comprises an information configuration module, a verification module, a mirror image document generating module and a network control module, wherein the information configuration module is applied to configure basic information for a cloud host; the verification module is applied to verify the basic information; the mirror image document generating module is applied to create a disk mirror document according to a validation pass indication in the verification module; the network control module is applied to obtain metadata information, determine address information classification, filter the metadata information according to the address information classification, judge operating system type according to returned information after filtration, configure network card configuration file information according to the operating system type and complete the establishment of the cloud host. The invention further discloses the calculating equipment containing the cloud host establishing device and a corresponding cloud host establishing method.

The present invention relates to the field of computers, and provides a method and an apparatus for reclaiming a space of a magnetic disk image, which can improve utilization of a storage space in a virtual scenario, avoid a magnetic disk image from being filled to the full, reduce time consumption, and ensure that a virtual machine service is not interrupted. The method comprises: searching a preset main file table (MFT) for a deleted file and a first sector corresponding to the deleted file, the first sector being a sector that is occupied by the deleted file in the magnetic disk image and does not store effective data; and then setting content of the first sector as a first identifier; and finally, releasing, according to a preset rule, the sector of which the content is the first identifier.

The invention provides a method for repairing a virtual machine under a desktop cloud environment. The method comprises the steps of mounting a virtual machine disk mirror and executing a virtual machine repairing module, wherein the mounting of the virtual machine disk mirror is a premise of the execution of the virtual machine repairing module, the disk mirror mounted onto a host machine represents a hard disk on the host machine, and following operation aims at the operation system on the hard disk; and the execution of the virtual machine repairing module is the core of the scheme and has the functions as follows: maintaining a crashed windows or linux physical machine by a LIVECD, changing or resetting passwords, cloning hard disks and recovering deleted files. The method comprises the repairing steps of directly mounting the virtual machine disk mirror stored at the back end onto the host machine and executing a virtual machine repairing module package, thereby realizing maintenance and repair on a related virtual machine.

The invention discloses a virtual disk file format conversion method and a device, relating to the technical field of virtualization, which can solve the problem of service interruption caused by offline conversion of virtual machine disk image file formats when a virtual machine migrates between different types of VMMs. The method comprises the following steps: establishing a mapping table of thevirtual address of a disk image file of a virtual machine VM and the physical address of a disk image file compatible with a virtual machine monitor VMM; according to the mapping table, converting avirtual address used when a user reads and writes the disk image file of the VM to a physical address in mapping relationship with the virtual address; and then performing data reading and writing onthe disk image file of the VM according to the physical address. This application is used for migrating services between different cloud platforms and heterogeneous virtual machine monitor software.

During initialization for remote disk mirroring in a redundant system, the copy driver of a running computer copies only the data of valid blocks to a disk of a standby computer in accordance with block management information used for management by the file system of the running computer. After the initialization, the remote-disk-mirroring driver of the running computer duplicates a request for writing data to a disk of the running computer, thereby causing the running computer to write the data to the disk of the running computer, and causing the standby computer to write the data to the disk of the standby computer.

The invention relates to a storage synchronization method for a virtual machine based on a shared virtual disk. The method comprises the following steps: firstly, storing a virtual disk image in a shared storage, and operating the virtual machine by adopting a snapshoot manner; then, acquiring a dirty page bitmap of a memory, and acquiring an address of the dirty page bitmap in a logic space of the virtual machine; obtaining a real address of the page in a memory space of a physical machine, and packaging the dirty pages of the memory into a data packet and transmitting the data packet to the virtual machine; mapping the page to the same address in the logic space of the virtual machine; finally, returning information, via a spare virtual machine, to a primary virtual machine to finish synchronization. According to the storage synchronization method for the virtual machine based on the virtual disk, the problems of long copying time and high system expenditure happening in a storage synchronization process of the virtual machine during error tolerance at present are solved; the storage synchronization method disclosed by the invention can be applied to an error tolerant technique for virtual machines.