Beijing Baidu Netcom Science and Technology Co., Ltd.

Beijing Bytedance Network Technology Co., Ltd.

Beijing Volcano Engine Technology Co., Ltd.

Yongji Xie

Yu Zhang

Wen Chai

Xun Ni

Jiachen Zhang

Jian Wang

Qi Liu

Rui Zhao

Peng Li

Sheng Zhao

Liming Wang

Haiyu Wang

Zewen Jin

Xiongchun Duan

Qiming Guan

Tianci Zhang

Jinfeng Yang

Embodiments of the present disclosure provide a method, apparatus, device and storage medium for data processing. If a kernel module sends a data calling request to a userspace process, first modification time information and second modification time information of data corresponding to the data calling request are obtained by the userspace process. The first and second modification time information are used to indicate modification time information of the data in the kernel module and in a file service end, respectively. The first and second modification time information are compared by the userspace process. If the first and second modification time information are inconsistent, a verification invalidation result is returned to the kernel module. The data in the kernel module is invalidated by the kernel module according to the verification invalidation result. The data in the file service is synchronized by the userspace process to the kernel module.

Method, apparatus, device and storage medium for data processing

The present disclosure relates to a data storage method and apparatus, a non-transitory computer-readable medium, and an electronic device. In the method, when data to be stored that is sent by a container is received through a target interface, a first buffer is generated in storage space of a kernel, and a target length, in the first buffer, of the data to be stored and a start address, in the first buffer, of the data to be stored are obtained. A target physical address in the kernel corresponding to the data to be stored is determined based on the target length and the start address. The target physical address is mapped to a target virtual address in a storage service module.

Data storage method and apparatus, readable medium, and electronic device

Embodiments of the present disclosure relate to a method and apparatus for processing information. The method can include: acquiring virtual machine device status information and physical address information from a target memory in response to determining a crash of a production kernel, the target memory being a memory pre-allocated to a running virtual machine by the production kernel, and the virtual machine device status information of the virtual machine and the physical address information corresponding to a virtual address of the memory of the virtual machine being stored into the target memory by the production kernel; acquiring data as target data according to the physical address information; and storing a file into a shared storage area according to the target data and the virtual machine device status information.

Method and apparatus for processing information

Embodiments of the present disclosure disclose a method and apparatus for processing a request. A specific embodiment of the method includes: acquiring, in response to start-up of a virtual machine, work queue quantity information of each device of the virtual machine, the work queue quantity information indicating a quantity of work queues of a device bound with a processing thread corresponding to the device of the virtual machine, the quantity being one or more; and creating, based on the work queue quantity information of the each device of the virtual machine, processing threads corresponding to the each device of the virtual machine respectively, the processing thread corresponding to the device of the virtual machine being used to process an access request for the device of the virtual machine in the work queue of the device bound with the processing thread.

Method and apparatus for processing request

An I/O request processing method in a virtual machine, a device and a computer readable medium are provided. When a backend device of a Guest kernel begins to process an I/O request chain submitted by a frontend device of the Guest kernel into a shared I/O processing memory, the method obtains a starting position of the I/O request chain in the I/O processing memory; according to the starting position of the I/O request chain, sets an element corresponding to the starting position of the I/O request chain in an I/O state array as a value different from initial values of all positions; and upon finishing processing the I/O request chain, sets an element corresponding to the starting position of the I/O request chain in an I/O request state array as a value identical with initial values.

I/O request processing method in virtual machine, device and computer readable medium

A live migration method for a virtual machine passthrough device, includes: performing a register state synchronization method by calling a register state synchronization interface; cancelling a passthrough state of the source virtual machine passthrough device, and migrating the source virtual machine passthrough device to the target virtual machine by iteratively executing multiple rounds of a synchronization operation as following: performing the register state synchronization method by calling the register state synchronization interface to capture a read/write operation on a register of the source virtual machine passthrough device in a migration process, and executing the captured read/write operation on a register of a target virtual machine passthrough device; and performing a DMA dirty page synchronization method by calling a configured DMA dirty page transmission interface, to write data corresponding to a DMA dirty page identified by the source virtual machine passthrough device into a memory of the target virtual machine.

Live migration method and apparatus for virtual machine passthrough device

Embodiments of the present disclosure disclose a communication method, apparatus and system for a virtual machine and a host machine. An embodiment of the communication method for a virtual machine and a host machine includes: polling a first command completion identifier queue set in a shared memory; comparing, in response to detecting an update of the first command completion identifier queue, the first command completion identifier queue with a second command completion identifier queue stored in the virtual machine to determine an identifier of a currently completed command; and updating the second command completion identifier queue based on the identifier of the currently completed command.

Communication method, apparatus and system for virtual machine and host machine

Embodiments of the disclosure disclose a method and apparatus for migrating a virtual machine. A specific embodiment of the method comprises: loading a target kernel module of a target operating system, the target operating system used for controlling a target electronic device running a virtual machine, and the target kernel module used for performing a shutdown operation for the target electronic device; determining whether to perform the shutdown operation based on electronic device running state information of the target electronic device; determining whether to migrate the virtual machine when a preset triggering condition is met, in response to determining not to perform the shutdown operation; and migrating the virtual machine if determining to migrate the virtual machine.

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Beijing, China

Yongji Xie