US 12,619,790 B2 · Data writing method, recovery method, and reading method, and corresponding apparatus

Abstract

Implementations of the present specification provide a data writing, data recovery, and data reading method, and a corresponding secure disk apparatus. The data writing method includes following: User data blocks are first written into a write cache, and a plurality of user data blocks identified by LBAs are read from the write cache under a certain condition. For each user data block, an HBA is allocated to the user data block, authenticated encryption is performed on the user data block to generate an encrypted data block and authentication information, and first metadata corresponding to the user data block is generated, where the first metadata is organized in a form of a KV pair and includes the LBA, the HBA, and the authentication information. A plurality of write commands for the plurality of user data blocks are submitted to a host disk for the disk to store the encrypted data block based on the corresponding HBA. In addition, the first metadata corresponding to each user data block is further written into a first metadata table maintained by using an LSM tree. Then, a synchronization operation command is sent to the LSM tree and the host disk for the LSM tree and the host disk to complete data write persistence.

Claims24

Dependent claims

A data writing method, comprising:

reading a plurality of user data blocks in a write cache under a trigger condition, each user data block including a logical block address (LBA) of the user data block;
for each user data block,
allocating a host block address (HBA) to the user data block,
performing authenticated encryption on the user data block to generate an encrypted data block and authentication information, and
generating first metadata corresponding to the user data block, the first metadata including a key-value (KV) pair and including the LBA, the HBA, and the authentication information;
submitting a plurality of write commands for the plurality of user data blocks to a disk for the disk to store the encrypted data block in a first storage area of the disk based on the corresponding HBA;
writing the first metadata corresponding to each user data block into a first metadata table maintained by using a log-structured merge (LSM) tree;
and
sending a synchronization operation command to the LSM tree and the disk for the LSM tree and the disk to complete data write persistence.

6 more elements

A computing system comprising one or more processors and one or more storage devices, the one or more storage devices, individually or collectively, having computer executable instructions stored thereon, the computer executable instructions, when executed by the one or more processors, enabling the one or more processors to, individually or collectively, implement actions including:

reading a plurality of user data blocks in a write cache under a trigger condition, each user data block including a logical block address (LBA) of the user data block;
for each user data block,
allocating a host block address (HBA) to the user data block,
performing authenticated encryption on the user data block to generate an encrypted data block and authentication information, and
generating first metadata corresponding to the user data block, the first metadata including a key-value (KV) pair and including the LBA, the HBA, and the authentication information;
submitting a plurality of write commands for the plurality of user data blocks to a disk for the disk to store the encrypted data block in a first storage area of the disk based on the corresponding HBA;
writing the first metadata corresponding to each user data block into a first metadata table maintained by using a log-structured merge (LSM) tree;
and
sending a synchronization operation command to the LSM tree and the disk for the LSM tree and the disk to complete data write persistence.

6 more elements

Dependencies are inferred from the claim text.

Data writing method, recovery method, and reading method, and corresponding apparatus

Life of this patent

Data writing method, recovery method, and reading method, and corresponding apparatus

Life of this patent

Abstract

Claims24