Huawei Technologies Co., Limited

Ge Du

Yu Hu

Jiancen Hou

A host of a storage system is coupled to multiple SSDs. Each SSD is configured with a migration cache, and each SSD corresponds to one piece of access information. The host obtains migration data information of to-be-migrated data in a source SSD, determines a target SSD, and sends a read instruction carrying information about to-be-migrated data and the target SSD to the source SSD. The source SSD reads a data block according to the read instruction from a flash memory of the source SSD into a migration cache of the target SSD. After a read instruction is completed by the SSD, the host sends a write instruction to the target SSD to instruct the target SSD to write the data block in the cache of the target SSD to a flash memory of the target SSD.

Data migration method, host, and solid state disk

A method for migrating data by a source network interface card includes: receiving a first migration instruction; sending a read instruction to the source SSD when receiving the first migration instruction, where the read instruction is used to instruct the source SSD to read the to-be-migrated data into the source migration cache; and sending a second migration instruction to a target intelligent network interface card of the target storage array after the to-be-migrated data is read from the source SSD, where the second migration instruction is used to instruct the target intelligent network interface card to migrate the to-be-migrated data in the source migration cache to the target storage array.

Solid-state disk (SSD) data migration

Data migration method, host and solid state disk

A computer system and a method are provided for accessing a peripheral component interconnect express (PCIe) endpoint device. The computer system includes: a processor, a PCIe bus, and an access proxy. The access proxy connects to the processor and the PCIe endpoint device; the processor acquires an operation instruction, where the operation instruction instructs the processor to access the PCIe endpoint device through the access proxy, and send an access request to the access proxy according to the operation instruction; and the access proxy sends a response message of the access request to the processor after receiving the access request sent by the processor. Because the processor does not directly access the PCIe endpoint device to be accessed but completes access through the access proxy, thereby avoiding an MCE reset for the processor.

Computer system, method for accessing peripheral component interconnect express endpoint device, and apparatus

In a Peripheral Component Interconnect Express (PCIe) system, a first PCIe apparatus determines that at least one of lanes of a link between the first PCIe apparatus and a second PCIe apparatus is disabled, wherein the link includes M lanes numbered in a first order. Based upon the determination, the first PCIe apparatus obtains a number N indicating a number of available lanes of the link by performing a lane negotiation with the second PCIe apparatus. Then, a processor determines that N&#x3c;M/2. Based upon the determination, the first PCIe apparatus re-numbers at least some of the lanes of the link in a reverse order opposite to the first order as instructed by the processor. At last, the first PCIe apparatus continue to perform a negotiation with the second PCIe apparatus to obtain available lanes.

Method, device, and system for processing PCIe link fault

A computer system and a method are provided for accessing a peripheral component interconnect express (PCIe) endpoint device. The computer system includes a processor, a PCIe bus, and an access proxy. The access proxy connects to the processor and the PCIe endpoint device; the processor acquires an operation instruction, where the operation instruction instructs the processor to access the PCIe endpoint device through the access proxy, and send an access request to the access proxy according to the operation instruction; and the access proxy sends a response message of the access request to the processor after receiving the access request sent by the processor. Because the processor does not directly access the PCIe endpoint device to be accessed but completes access through the access proxy, thereby avoiding a machine check exception (MCE) reset for the processor.

Access proxy for accessing peripheral component interconnect express endpoint device, PCIe exchanger and computer system

A computer system and a method are provided for accessing a peripheral component interconnect express PCIe endpoint device. The computer system includes: a processor, a PCIe bus, and an access proxy. The access proxy connects to the processor and the PCIe endpoint device; the processor acquires an operation instruction, where the operation instruction instructs the processor to access the PCIe endpoint device through the access proxy, and send an access request to the access proxy according to the operation instruction; and the access proxy sends a response message of the access request to the processor after receiving the access request sent by the processor. Because the processor does not directly access the PCIe endpoint device to be accessed but completes access through the access proxy, thereby avoiding an MCE reset for the processor.

Growing community of inventors

Chengdu, China

Ge Du