Alibaba Group Holding Limited

Weicai Chen

Bo Chen

Shikun Tian

Qian Wang

Yingbin Wang

Jia Wan

Zhen-hua Song

Xiaobo Li

Hua Kong

Embodiments of the present application relate to a method for scheduling virtual disk input and output (I/O) ports, a device for scheduling virtual disk I/O ports, and a computer program product for scheduling virtual disk I/O ports. A method for scheduling virtual disk I/O ports is provided. The method includes assigning a set of service quality ratings to a corresponding set of virtual disk I/O ports based on a set of reading-writing bandwidth quotas associated with the corresponding set of virtual disk I/O ports in a physical machine, determining a total forecast value of a data bandwidth to be used by reading-writing requests and determining virtual disk I/O ports, allocating reading-writing bandwidth limits to the virtual disk I/O ports, and scheduling virtual disk I/O ports on the physical machine.

Method and device for scheduling virtual disk input and output ports

Forwarding Ethernet packets is disclosed, including: receiving an incoming packet; determining a value based at least in part on performing a hash operation on at least a portion of a destination Internet Protocol (IP) address included in the incoming packet; comparing the value against a pre-established look-up table to determine whether a corresponding index value is found, wherein the pre-established look-up table stores index values and corresponding data sets to respective ones of the index values; determining a destination media access control (MAC) address associated with the incoming packet based at least in part on whether the corresponding index value is found in the pre-established look-up table; and forwarding the incoming packet to a virtual machine associated with the determined destination MAC address.

Forwarding Ethernet packets

The present disclosure introduces a method and an apparatus of shrinking virtual hard disk image file. The present techniques search a garbage data block in a file and revise a record of the garbage data block in a block allocation table (BAT). The file includes one or more data blocks and a BAT that records information of each data block. The garbage data block is a data block that does not store effective data. The present techniques move an effective data block subsequent to the garbage data block, revise a record of the effective data block in the BAT after the moving, and shrink a size of the file after the movement.

Shrinking virtual hard disk image

Forwarding ethernet packets

A server of an elastic computing cloud system includes a block device driver apparatus and at least a block device service apparatus. The server implements a hot deployment for a storage service, such that an upgrade of the storage service may be performed without interrupting the storage service. The block device driver apparatus maintains a waiting queue and a pending queue for each storage service. In response to determining a storage service will perform an upgrade, the block device driver apparatus stops processing data write/read requests that are maintained in the pending queue for the service, and puts the data write/read requests that are currently processed in the pending queue back to the waiting queue for re-dispatching, thus realizing completion of processing the upgrade of the storage service in the elastic computing cloud system without interrupting the storage service.

Growing community of inventors

Hangzhou, China

Weicai Chen