Other

Huawei Technologies Co., Limited

Tsinghua University

Hongliang Yu

Weimin Zheng

Hao Gong

Yuyang Du

Linli Zhang

The present invention relates to a kernel state and user state data exchange method for disaster recovery of a virtual container system. In one disaster recovery backup of a virtual container, data needs to be exchanged between a kernel state and a user state. The file system operation of the kernel state needs to be transmitted to a user state program for processing firstly, and the processing result is returned to the kernel state and then transmitted to an original application program. Low recovery speed of a data block is mainly caused by the need of multiple times of switching between the kernel state and the user state, and the communication efficiency of the kernel state and the user state is low. In the present invention, all recovery operations are completed by the user state by virtue of a FUSE. A FUSE file system is realized firstly, one of files therein is mapped to the /DEV/LOOP device, then the LOOP device is used as a shadow device of a disk to be recovered, and a virtual container manager enables a virtual container with the LOOP device. The access to the original hard disk is intercepted in the FUSE file system, and then the FUSE file system communicates with the server, so that efficient on-demand recovery of data is realized.

Kernel state and user state data exchange method for disaster recovery of virtual container system

The present invention provides a data migration method and apparatus, where the method includes: after a second control board is inserted into a second control board slot, receiving, by a first control board, type information from the second control board, and determining whether the type information of the second control board and type information of the first control board are the same; and when determining that the type information of the second control board and the type information of the first control board are different, sending, by the first control board, configuration data stored by the first control board itself to the second control board, so that the second control board utilizes the configuration data to perform a configuration.

Data migration method and apparatus

Embodiments of the present invention provide a wear-leveling method, a storage device, and an information system, where a storage region is divided into a plurality of storage sub-regions of the same size. The method includes: recording the accumulated number of write operations of each storage sub-region; and when the accumulated number of write operations of any one storage sub-region of the plurality of storage sub-regions reaches a predetermined remapping rate, mapping a logical address of the storage sub-region to a remapping physical address. With the wear-leveling method, the storage device, and the information system in the embodiments of the present invention, a logical address of a local data block on which too many write operations are performed may be evenly mapped to an overall physical storage region, thereby avoiding that local data is too hot and prolonging a service life of a storage medium.

Wear-leveling method, storage device, and information system

Embodiments disclosed herein related to a virtual machine-based on-demand parallel disaster recovery system and a method thereof. By integrating context of processes of virtual machine, the system and method build a process tree related to applications and support the operation of freezing the context and intercept memory image consistent with the virtual machine environment, based on which, a method for on-demand parallel recovery is provided. In the method, while monitoring file system data that processes of virtual machine are to visit by a kernel intercept unit, recovery of related data blocks of the applications is conducted in the background in order to make applications and recovery procedure of the virtual machine run simultaneously. The recovery procedure is divided into two phases, recovering memory image first and then recovering file system or volume data. Through the procedure, applications can be recovered precisely to the running state when they are backup. The method realizes the scheduling of multiple backup tasks and recovery tasks in client and realizes the prefetching of the recovered data. The embodiments described herein consume less time for recovery, enhances the reliability of the protected applications, has a low cost and practical value; and it is transparent to users.

Virtual machine-based on-demand parallel disaster recovery system and the method thereof

Embodiments disclosed herein related to a system used for disaster recovery backup. The system converts the operating system in the system preparing for disaster recovery into a virtualized system which will be disaster-recovery-ready. The system includes: a device to be converted on which a physical operating system is installed; a USB converting device which is coupled to the device to be converted, which includes a USB disc operating system, a converting unit and a virtual system, and which is used to convert the physical operating system in the device to be converted into a virtual system for making backup of the virtual system. Embodiments disclosed herein are further related to a method for disaster recovery backup and a method for installing the disaster recovery system. The disaster recovery system based on the virtualization technology may be deployed rapidly without making any changes to the physical operating system itself. After conversion, applications in the physical operating system are not influenced by the process of disaster recovery. In addition, because the running environment of virtual system after conversion and that of original physical operating system share the same physical machine, there is no unwanted influence on the virtual system after conversion caused by the difference of properties.

Growing community of inventors

Beijing, China

Hongliang Yu