WO2020108124A1 - 数据备份方法及装置 - Google Patents

数据备份方法及装置 Download PDF

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Publication number
WO2020108124A1
WO2020108124A1 PCT/CN2019/110870 CN2019110870W WO2020108124A1 WO 2020108124 A1 WO2020108124 A1 WO 2020108124A1 CN 2019110870 W CN2019110870 W CN 2019110870W WO 2020108124 A1 WO2020108124 A1 WO 2020108124A1
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Prior art keywords
data
backed
memory
rdma network
identification information
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PCT/CN2019/110870
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English (en)
French (fr)
Inventor
崔钊
武鹏
喻鹏
李常青
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阿里巴巴集团控股有限公司
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Publication of WO2020108124A1 publication Critical patent/WO2020108124A1/zh

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14Error detection or correction of the data by redundancy in operation
    • G06F11/1402Saving, restoring, recovering or retrying
    • G06F11/1446Point-in-time backing up or restoration of persistent data
    • G06F11/1458Management of the backup or restore process
    • G06F11/1461Backup scheduling policy
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14Error detection or correction of the data by redundancy in operation
    • G06F11/1402Saving, restoring, recovering or retrying
    • G06F11/1446Point-in-time backing up or restoration of persistent data
    • G06F11/1458Management of the backup or restore process
    • G06F11/1464Management of the backup or restore process for networked environments

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  • This specification relates to the technical field of data processing, and in particular, to a data backup method and device.
  • the distributed data backup solution generally depends on two aspects: on the one hand, the traditional network connection is used, because the traditional network connection must be participated by the CPU (Central Processing Unit, central processing unit) of two computers to realize the data
  • the transmission will greatly increase the time overhead.
  • data backup can be completed in more than 100 microseconds.
  • the backup medium of the backup machine is a solid state drive, and the typical delay of the solid state drive is also on the order of 100 microseconds. Therefore, the traditional data backup method takes a single time in the order of 100 microseconds, which takes a long time, resulting in low efficiency.
  • the purpose of one or more embodiments of this specification is to provide a data backup method and device to improve the efficiency of data backup.
  • one or more embodiments of this specification provide a data backup method, which is applied to the RDMA network card built in the first device, including:
  • the data backup request In response to the data backup request sent by the second device, establish an RDMA network connection relationship with the second device; wherein, the data backup request includes identification information of the data to be backed up;
  • the memory of the first device is persistent memory.
  • the acquiring the data to be backed up corresponding to the identification information from the second device includes:
  • the method further includes:
  • the method before monitoring the storage status of the data to be backed up in the memory of the first device, the method further includes:
  • one or more embodiments of this specification provide a data backup device, which is applied to the RDMA network card built in the first device, and includes:
  • the establishment module is configured to establish an RDMA network connection relationship with the second device in response to the data backup request sent by the second device; wherein the data backup request includes identification information of the data to be backed up;
  • An obtaining module configured to obtain the data to be backed up corresponding to the identification information from the second device based on the RDMA network connection relationship;
  • the transmission module is configured to transmit the data to be backed up to the memory of the first device, so that the memory of the first device stores the data to be backed up.
  • the memory of the first device is persistent memory.
  • the acquisition module includes:
  • a searching unit configured to search the data to be backed up from the memory of the second device according to the identification information
  • the obtaining unit is configured to obtain the found data to be backed up through the RDMA network connection relationship.
  • the device further includes:
  • a monitoring module configured to monitor the storage status of the data to be backed up in the memory of the first device after transmitting the data to be backed up to the memory of the first device;
  • a generating module configured to generate first information that the data to be backed up has been successfully backed up when the storage status is storage completion
  • the sending module is configured to send the first information to the second device.
  • the device further includes:
  • the receiving module is configured to receive, before monitoring the storage status of the data to be backed up in the memory of the first device, confirmation information sent by the second device to confirm whether the data to be backed up has been successfully backed up.
  • one or more embodiments of this specification provide a data backup device, which is applied to an RDMA network card built in the first device, and includes:
  • a memory arranged to store computer-executable instructions, which when executed, causes the processor to:
  • the data backup request In response to the data backup request sent by the second device, establish an RDMA network connection relationship with the second device; wherein, the data backup request includes identification information of the data to be backed up;
  • an embodiment of the present application provides a storage medium for storing computer-executable instructions, which when executed are implemented as follows:
  • the data backup request In response to the data backup request sent by the second device, establish an RDMA network connection relationship with the second device; wherein, the data backup request includes identification information of the data to be backed up;
  • an RDMA network card built in the first device is used to establish an RDMA network connection relationship between the first device and the second device, and based on the RDMA network connection relationship from the second device To obtain the data to be backed up, and then directly transfer the data to be backed up to the memory of the first device, so that the memory of the first device stores the data to be backed up.
  • this technical solution does not require the CPU of the first device or the second device to participate in the entire data backup process (that is, the CPU does not need to interact with any device or the memory in the device), but only needs to use the first device.
  • the set RDMA network card directly obtains the data to be backed up from the second device and transfers it to the memory to complete the data backup, thus greatly improving the efficiency of data backup.
  • the memory in the first device is a persistent memory, compared with the traditional way of backing up data using a solid state drive, this technical solution can avoid the high latency problem caused by the solid state drive and achieve efficient data backup Effect.
  • FIG. 1 is a schematic flowchart of a data backup method according to an embodiment of the present specification
  • FIG. 2 is a schematic block diagram of a data backup system according to an embodiment of the present specification
  • FIG. 3 is a schematic flowchart of a data backup method according to another embodiment of this specification.
  • FIG. 4 is a schematic block diagram of a data backup device according to an embodiment of the present specification.
  • FIG. 5 is a schematic block diagram of a data backup device according to an embodiment of the present specification.
  • One or more embodiments of this specification provide a data backup method and device to improve the efficiency of data backup.
  • FIG. 1 is a schematic flowchart of a data backup method according to an embodiment of the present specification. As shown in FIG. 1, the method is applied to an RDMA network card built in a first device, including:
  • the data backup request includes identification information of the data to be backed up.
  • the identification information may be the location information of the data to be backed up in the second device, or may be information corresponding to the data to be backed up to identify its specific content, such as key characters and initial characters of the specific content.
  • S104 Based on the RDMA network connection relationship, obtain the data to be backed up corresponding to the identification information from the second device.
  • S106 Transmit the data to be backed up to the memory of the first device, so that the memory of the first device stores the data to be backed up.
  • an RDMA network card built in the first device is used to establish an RDMA network connection relationship between the first device and the second device, and based on the RDMA network connection relationship from the second device To obtain the data to be backed up, and then directly transfer the data to be backed up to the memory of the first device, so that the memory of the first device stores the data to be backed up.
  • this technical solution does not require the CPU of the first device or the second device to participate in the entire data backup process (that is, the CPU does not need to interact with any device or the memory in the device), but only needs to use the first device.
  • the set RDMA network card directly obtains the data to be backed up from the second device and transfers it to the memory to complete the data backup, thus greatly improving the efficiency of data backup.
  • the memory of the first device is persistent memory.
  • persistent memory not only has the access characteristics of memory, but also can ensure that the data stored inside is not lost.
  • the memory in the first device is a persistent memory, compared with the traditional method of backing up data using a solid state drive, this technical solution can avoid the problems of high latency and data loss caused by the solid state drive, Realized the effect of efficiently backing up data.
  • the data to be backed up when acquiring the data to be backed up corresponding to the identification information from the second device, the data to be backed up may be searched from the memory of the second device according to the identification information of the data to be backed up in the data backup request, and then through RDMA The network connection relationship obtains the found data to be backed up.
  • the identification information may be the location information of the data to be backed up in the second device, or may be information corresponding to the data to be backed up to identify its specific content.
  • the storage state of the data to be backed up in the memory of the first device may be monitored, and when the storage state is storage completed, a data may be generated to identify the backup The first information that the data has been successfully backed up, and send the first information to the second device.
  • the second device may be sent an acquisition request to re-acquire the data to be backed up, and the second device again sends the data to be backed up in the memory to the RDMA network card of the first device according to the acquisition request, so that the RDMA The network card stores the data to be backed up in the memory of the first device again.
  • confirmation information sent by the second device to confirm whether the data to be backed up has been successfully backed up may be received.
  • the RDMA network card of the first device can passively receive the confirmation message sent by the second device to confirm whether the data to be backed up is successfully backed up, and then, the RDMA network card of the first device confirms whether the memory is The data to be backed up is successfully stored. If the data to be backed up has been successfully stored in the memory, second information identifying that the data to be backed up has been successfully backed up is generated, and the second information is sent to the second device.
  • an acquisition request to re-acquire the data to be backed up is sent to the second device, and the second device sends the data to be backed up in the memory to the RDMA network card of the first device again according to the acquisition request, RDMA
  • the network card stores the data to be backed up in the memory of the first device again.
  • FIG. 2 is a schematic block diagram of a data backup system according to an embodiment of the present specification.
  • the data backup system includes a first device 210 and a second device 220; wherein, the first device 210 includes a CPU 211, an RDMA network card 212, and a persistent memory 213; the second device 220 includes a CPU 221, a network card 222, and a memory 223 .
  • the dotted arrow between the RDMA network card 212 and the network card 222 indicates the network connection relationship between the two.
  • the CPU of the second device sends a data backup request to the RDMA network card of the first device, where the data backup request includes identification information of the data to be backed up.
  • the identification information may be the location information of the data to be backed up in the second device, or may be information corresponding to the data to be backed up to identify its specific content, such as key characters and initial characters of the specific content.
  • the RDMA network card of the first device After receiving the data backup request, the RDMA network card of the first device establishes an RDMA network connection relationship between the RDMA network card and the network card of the second device.
  • the RDMA network card of the first device searches and obtains the data to be backed up from the memory of the second device according to the identification information of the data to be backed up.
  • the RDMA network card of the first device transmits the acquired data to be backed up to the persistent memory.
  • the persistent memory of the first device stores the data to be backed up.
  • the network card of the second device sends confirmation information for confirming whether the data to be backed up has been successfully backed up to the RDMA network card of the first device.
  • the RDMA network card of the first device monitors whether the data to be backed up has been successfully stored in the persistent memory according to the confirmation information; if yes, execute S308; if not, return to S303.
  • the RDMA network card of the first device generates information identifying that the data to be backed up has been successfully backed up, and sends the information to the network card of the second device.
  • the RDMA network connection relationship between the first device and the second device is established through the RDMA network card built in the first device, and the data to be backed up is obtained from the second device based on the RDMA network connection relationship, and then directly The data to be backed up is transmitted to the persistent memory of the first device, so that the persistent memory of the first device stores the data to be backed up. It can be seen that this technical solution does not require the CPU of the first device or the second device to participate in the entire data backup process (that is, the CPU does not need to interact with any device or the memory in the device), but only needs to use the first device.
  • the set RDMA network card directly obtains the data to be backed up from the second device and transfers it to the persistent memory to complete the data backup, so the efficiency of data backup is greatly improved.
  • this technical solution can also avoid the high latency and data loss problems caused by traditional solid state drives, and achieve the effect of efficient data backup.
  • one or more embodiments of this specification also provides a data backup device.
  • FIG. 4 is a schematic flowchart of a data backup device according to an embodiment of the present specification. As shown in FIG. 4, the data backup device 400 is applied to an RDMA network card built in a first device, including:
  • the establishment module 410 is configured to establish an RDMA network connection relationship with the second device in response to the data backup request sent by the second device; wherein the data backup request includes identification information of the data to be backed up;
  • the obtaining module 420 is configured to obtain the data to be backed up corresponding to the identification information from the second device based on the RDMA network connection relationship;
  • the transmission module 430 is configured to transmit the data to be backed up to the memory of the first device, so that the memory of the first device stores the data to be backed up.
  • the memory of the first device is persistent memory.
  • the obtaining module 420 includes:
  • the searching unit is used for searching the data to be backed up from the memory of the second device according to the identification information
  • the obtaining unit is used to obtain the found data to be backed up through the RDMA network connection relationship.
  • the device 400 further includes:
  • the monitoring module is configured to monitor the storage status of the data to be backed up in the memory of the first device after transmitting the data to be backed up to the memory of the first device;
  • the generation module is used to generate the first information that the data to be backed up has been successfully backed up when the storage status is storage completion;
  • the sending module is used to send the first information to the second device.
  • the device 400 further includes:
  • the receiving module is configured to receive confirmation information sent by the second device to confirm whether the data to be backed up has been successfully backed up before monitoring the storage status of the data to be backed up in the memory of the first device.
  • an RDMA network card built in the first device is used to establish an RDMA network connection relationship between the first device and the second device, and from the second device based on the RDMA network connection relationship Obtain the data to be backed up, and then directly transfer the data to be backed up to the memory of the first device, so that the memory of the first device stores the data to be backed up. It can be seen that this technical solution does not require the CPU of the first device or the second device to participate in the entire data backup process (that is, the CPU does not need to interact with any device or the memory in the device), but only needs to use the first device.
  • the set RDMA network card directly obtains the data to be backed up from the second device and transfers it to the memory to complete the data backup, thus greatly improving the efficiency of data backup.
  • the memory in the first device is a persistent memory, compared to the traditional way of backing up data using a solid state drive, the device can avoid the high latency problem caused by the solid state drive, and achieve efficient data backup effect.
  • the data backup device may have a relatively large difference due to different configurations or performance, and may include one or more processors 501 and a memory 502, and the memory 502 may store one or more stored application programs or data. Among them, the memory 502 may be short-term storage or persistent storage.
  • the application program stored in the memory 502 may include one or more modules (not shown), and each module may include a series of computer-executable instructions in the data backup device.
  • the processor 501 may be configured to communicate with the memory 502 and execute a series of computer-executable instructions in the memory 502 on the data backup device.
  • the data backup device may also include one or more power sources 503, one or more wired or wireless network interfaces 504, one or more input/output interfaces 505, and one or more keyboards 506.
  • the data backup device includes a memory and one or more programs, where one or more programs are stored in the memory, and one or more programs may include one or more modules, and each The module may include a series of computer-executable instructions in the data backup device, and the one or more programs configured to be executed by one or more processors include the following computer-executable instructions:
  • the data backup request In response to the data backup request sent by the second device, establish an RDMA network connection relationship with the second device; wherein, the data backup request includes identification information of the data to be backed up;
  • the memory of the first device is persistent memory.
  • the processor may also:
  • the processor may also:
  • the processor may also:
  • One or more embodiments of this specification also proposes a computer-readable storage medium that stores one or more programs, the one or more programs include instructions, and when the instructions are included in multiple applications When the electronic device is executed, it can enable the electronic device to execute the above data backup method, and is specifically used to execute:
  • the data backup request In response to the data backup request sent by the second device, establish an RDMA network connection relationship with the second device; wherein, the data backup request includes identification information of the data to be backed up;
  • the system, device, module or unit explained in the above embodiments may be specifically implemented by a computer chip or entity, or implemented by a product with a certain function.
  • a typical implementation device is a computer.
  • the computer may be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device A combination of any of these devices.
  • one or more embodiments of this specification may be provided as a method, system, or computer program product. Therefore, one or more embodiments of this specification may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Moreover, one or more embodiments of this specification may employ computer programs implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code The form of the product.
  • computer usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions can be provided to the processor of a general-purpose computer, special-purpose computer, embedded processing machine, or other programmable data processing device to produce a machine that allows instructions generated by the processor of the computer or other programmable data processing device to be An apparatus for realizing the functions specified in one block or multiple blocks of one flow or multiple flows of a flowchart and/or one block or multiple blocks of a block diagram.
  • These computer program instructions may also be stored in a computer-readable memory that can guide a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, the instructions
  • the device implements the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and/or block diagrams.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operating steps are performed on the computer or other programmable device to produce computer-implemented processing, which is executed on the computer or other programmable device
  • the instructions provide steps for implementing the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and/or block diagrams.
  • the computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
  • processors CPUs
  • input/output interfaces network interfaces
  • memory volatile and non-volatile memory
  • the memory may include non-permanent memory, random access memory (RAM) and/or non-volatile memory in computer-readable media, such as read only memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.
  • RAM random access memory
  • ROM read only memory
  • flash RAM flash random access memory
  • Computer-readable media including permanent and non-permanent, removable and non-removable media, can store information by any method or technology.
  • the information may be computer readable instructions, data structures, modules of programs, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, read-only compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, Magnetic tape cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices.
  • computer-readable media does not include temporary computer-readable media (transitory media), such as modulated data signals and carrier waves.
  • program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types.
  • the present application may also be practiced in distributed computing environments in which tasks are performed by remote processing devices connected through a communication network.
  • program modules may be located in local and remote computer storage media including storage devices.

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Abstract

本说明书一个或多个实施例公开了一种数据备份方法及装置,用以提高数据备份的效率。所述方法应用于第一设备内设的RDMA网卡,包括:响应于第二设备发送的数据备份请求,建立与所述第二设备之间的RDMA网络连接关系;其中,所述数据备份请求包括待备份数据的标识信息;基于所述RDMA网络连接关系,从所述第二设备中获取所述标识信息对应的所述待备份数据;将所述待备份数据传输至所述第一设备的内存,以使所述第一设备的内存存储所述待备份数据。

Description

数据备份方法及装置 技术领域
本说明书涉及数据处理技术领域,尤其涉及一种数据备份方法及装置。
背景技术
现有技术中,分布式数据备份方案一般依赖于两个方面:一方面是采用传统网络连接,由于传统网络连接必须由两台计算机的CPU(Central Processing Unit,中央处理器)参与才能够实现数据传输,因此会极大增加时间开销,一般在100微秒以上才可完成数据备份;另一方面是备份机的备份介质为固态硬盘,而固态硬盘的典型延迟也在100微秒数量级。因此,传统的数据备份方式单次耗时均在100微秒数量级之上,耗时较长,导致效率较低。
发明内容
本说明书一个或多个实施例的目的是提供一种数据备份方法及装置,用以提高数据备份的效率。
为解决上述技术问题,本说明书一个或多个实施例是这样实现的:
一方面,本说明书一个或多个实施例提供一种数据备份方法,应用于第一设备内设的RDMA网卡,包括:
响应于第二设备发送的数据备份请求,建立与所述第二设备之间的RDMA网络连接关系;其中,所述数据备份请求包括待备份数据的标识信息;
基于所述RDMA网络连接关系,从所述第二设备中获取所述标识信息对应的所述待备份数据;
将所述待备份数据传输至所述第一设备的内存,以使所述第一设备的内存存储所述待备份数据。
在一个实施例中,所述第一设备的内存为持久化内存。
在一个实施例中,所述从所述第二设备中获取所述标识信息对应的所述待备份数据,包括:
根据所述标识信息,从所述第二设备的内存中查找所述待备份数据;
通过所述RDMA网络连接关系获取查找到的所述待备份数据。
在一个实施例中,在将所述待备份数据传输至所述第一设备的内存之后,还包括:
监测所述待备份数据在所述第一设备的内存中的存储状态;
当所述存储状态为存储完成时,生成所述待备份数据已成功备份的第一信息;
将所述第一信息发送至所述第二设备。
在一个实施例中,在监测所述待备份数据在所述第一设备的内存中的存储状态之前,还包括:
接收所述第二设备发送的用于确认所述待备份数据是否已成功备份的确认信息。
另一方面,本说明书一个或多个实施例提供一种数据备份装置,应用于第一设备内设的RDMA网卡,包括:
建立模块,用于响应于第二设备发送的数据备份请求,建立与所述第二设备之间的RDMA网络连接关系;其中,所述数据备份请求包括待备份数据的标识信息;
获取模块,用于基于所述RDMA网络连接关系,从所述第二设备中获取所述标识信息对应的所述待备份数据;
传输模块,用于将所述待备份数据传输至所述第一设备的内存,以使所述第一设备的内存存储所述待备份数据。
在一个实施例中,所述第一设备的内存为持久化内存。
在一个实施例中,所述获取模块包括:
查找单元,用于根据所述标识信息,从所述第二设备的内存中查找所述待备份数据;
获取单元,用于通过所述RDMA网络连接关系获取查找到的所述待备份数据。
在一个实施例中,所述装置还包括:
监测模块,用于在将所述待备份数据传输至所述第一设备的内存之后,监测所述待备份数据在所述第一设备的内存中的存储状态;
生成模块,用于当所述存储状态为存储完成时,生成所述待备份数据已成功备份的第一信息;
发送模块,用于将所述第一信息发送至所述第二设备。
在一个实施例中,所述装置还包括:
接收模块,用于在监测所述待备份数据在所述第一设备的内存中的存储状态之前,接收所述第二设备发送的用于确认所述待备份数据是否已成功备份的确认信息。
再一方面,本说明书一个或多个实施例提供一种数据备份设备,应用于第一设备内设的RDMA网卡,包括:
处理器;以及
被安排成存储计算机可执行指令的存储器,所述可执行指令在被执行时使所述处理器:
响应于第二设备发送的数据备份请求,建立与所述第二设备之间的RDMA网络连接关系;其中,所述数据备份请求包括待备份数据的标识信息;
基于所述RDMA网络连接关系,从所述第二设备中获取所述标识信息对应的所述待备份数据;
将所述待备份数据传输至所述第一设备的内存,以使所述第一设备的内存存储所述待备份数据。
再一方面,本申请实施例提供一种存储介质,用于存储计算机可执行指令,所述可执行指令在被执行时实现以下流程:
响应于第二设备发送的数据备份请求,建立与所述第二设备之间的RDMA网络连接关系;其中,所述数据备份请求包括待备份数据的标识信息;
基于所述RDMA网络连接关系,从所述第二设备中获取所述标识信息对应的所述待备份数据;
将所述待备份数据传输至所述第一设备的内存,以使所述第一设备的内存存储所述待备份数据。
采用本说明书一个或多个实施例的技术方案,通过第一设备内设的RDMA网卡,建立第一设备与第二设备之间的RDMA网络连接关系,并基于该RDMA网络连接关系从第二设备中获取待备份数据,进而直接将待备份数据传输至第一设备的内存,以使第一设备的内存存储待备份数据。可见,该技术方案在整个数据备份过程中,并不需要第一设备或第二设备的CPU参与(即无需CPU与任一设备或设备中的内存进行交互),而 只需利用第一设备内设的RDMA网卡直接从第二设备中获取待备份数据并传输至内存即可完成数据备份,因此极大地提高了数据备份的效率。
进一步地,由于第一设备中的内存为持久化内存,因此相较于传统的采用固态硬盘备份数据的方式而言,该技术方案能够避免固态硬盘带来的高延迟问题,实现了高效备份数据的效果。
附图说明
为了更清楚地说明本说明书一个或多个实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本说明书一个或多个实施例中记载的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1是根据本说明书一实施例的一种数据备份方法的示意性流程图;
图2是根据本说明书一实施例的一种数据备份系统的示意性框图;
图3是根据本说明书另一实施例的一种数据备份方法的示意性流程图;
图4是根据本说明书一实施例的一种数据备份装置的示意性框图;
图5是根据本说明书一实施例的一种数据备份设备的示意性框图。
具体实施方式
本说明书一个或多个实施例提供一种数据备份方法及装置,用以提高数据备份的效率。
为了使本技术领域的人员更好地理解本说明书一个或多个实施例中的技术方案,下面将结合本说明书一个或多个实施例中的附图,对本说明书一个或多个实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本说明书一部分实施例,而不是全部的实施例。基于本说明书一个或多个实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都应当属于本说明书一个或多个实施例保护的范围。
图1是根据本说明书一实施例的一种数据备份方法的示意性流程图,如图1所示,该方法应用于第一设备内设的RDMA网卡,包括:
S102,响应于第二设备发送的数据备份请求,建立与第二设备之间的RDMA网络连接关系。
其中,数据备份请求包括待备份数据的标识信息。
标识信息可以是待备份数据在第二设备中的位置信息,也可以是待备份数据对应的用于标识其具体内容的信息,如具体内容的关键字符、初始字符等。
S104,基于RDMA网络连接关系,从第二设备中获取标识信息对应的待备份数据。
S106,将待备份数据传输至第一设备的内存,以使第一设备的内存存储待备份数据。
采用本说明书一个或多个实施例的技术方案,通过第一设备内设的RDMA网卡,建立第一设备与第二设备之间的RDMA网络连接关系,并基于该RDMA网络连接关系从第二设备中获取待备份数据,进而直接将待备份数据传输至第一设备的内存,以使第一设备的内存存储待备份数据。可见,该技术方案在整个数据备份过程中,并不需要第一设备或第二设备的CPU参与(即无需CPU与任一设备或设备中的内存进行交互),而只需利用第一设备内设的RDMA网卡直接从第二设备中获取待备份数据并传输至内存即可完成数据备份,因此极大地提高了数据备份的效率。
在一个实施例中,第一设备的内存为持久化内存。其中,持久化内存不仅具备内存的访问特性,且能够保证其内部所存储的数据不丢失。
本实施例中,由于第一设备中的内存为持久化内存,因此相较于传统的采用固态硬盘备份数据的方式而言,该技术方案能够避免固态硬盘带来的高延迟及数据丢失问题,实现了高效备份数据的效果。
在一个实施例中,从第二设备中获取标识信息对应的待备份数据时,可先根据数据备份请求中待备份数据的标识信息,从第二设备的内存中查找待备份数据,进而通过RDMA网络连接关系获取查找到的待备份数据。其中,标识信息可以是待备份数据在第二设备中的位置信息,也可以是待备份数据对应的用于标识其具体内容的信息。
在一个实施例中,在将待备份数据传输至第一设备的内存之后,可监测待备份数据在第一设备的内存中的存储状态,当存储状态为存储完成时,生成用于标识待备份数据已成功备份的第一信息,并将该第一信息发送至第二设备。
当存储状态为存储失败时,可向第二设备发送重新获取待备份数据的获取请求,第二设备根据该获取请求再次将内存中的待备份数据发送至第一设备的RDMA网卡,以 使RDMA网卡重新将待备份数据存储至第一设备的内存中。
本实施例中,通过监测待备份数据在第一设备的内存中的存储状态,能够确保待备份数据成功备份在第一设备中,避免待备份数据存储失败时丢失数据的情况。
在一个实施例中,在监测待备份数据在第一设备的内存中的存储状态之前,可接收第二设备发送的用于确认待备份数据是否已成功备份的确认信息。
本实施例中,第一设备的RDMA网卡可被动接收由第二设备发送的用于确认待备份数据是否备份成功的确认信息,然后,第一设备的RDMA网卡根据该确认信息确认内存中是否已成功存储待备份数据,若内存中已成功存储待备份数据,则生成用于标识待备份数据已成功备份的第二信息,并将该第二信息发送至第二设备。
若内存中未成功存储待备份数据,则向第二设备发送重新获取待备份数据的获取请求,第二设备根据该获取请求再次将内存中的待备份数据发送至第一设备的RDMA网卡,RDMA网卡重新将待备份数据存储至第一设备的内存中。
图2是根据本说明书一实施例的一种数据备份系统的示意性框图。如图2所示,数据备份系统包括第一设备210和第二设备220;其中,第一设备210包括CPU211、RDMA网卡212和持久化内存213;第二设备220包括CPU221、网卡222和内存223。RDMA网卡212和网卡222之间的虚线箭头表示二者之间的网络连接关系。
将上述实施例中提供的数据备份方法应用于图3所示的数据备份系统中,具体步骤可包括图3所示的如下步骤:
S301,第二设备的CPU向第一设备的RDMA网卡发送数据备份请求,该数据备份请求中包括待备份数据的标识信息。
其中,标识信息可以是待备份数据在第二设备中的位置信息,也可以是待备份数据对应的用于标识其具体内容的信息,如具体内容的关键字符、初始字符等。
S302,第一设备的RDMA网卡接收到数据备份请求后,建立RDMA网卡与第二设备的网卡之间的RDMA网络连接关系。
S303,第一设备的RDMA网卡基于RDMA网络连接关系,根据待备份数据的标识信息从第二设备的内存中查找并获取待备份数据。
S304,第一设备的RDMA网卡将获取到的待备份数据传输至持久化内存。
S305,第一设备的持久化内存存储待备份数据。
S306,第二设备的网卡向第一设备的RDMA网卡发送用于确认待备份数据是否已成功备份的确认信息。
S307,第一设备的RDMA网卡根据确认信息,监测持久化内存中是否已成功存储待备份数据;若是,则执行S308;若否,则返回S303。
S308,第一设备的RDMA网卡生成用于标识待备份数据已成功备份的信息,并将该信息发送至第二设备的网卡。
本实施例中,通过第一设备内设的RDMA网卡建立第一设备与第二设备之间的RDMA网络连接关系,并基于该RDMA网络连接关系从第二设备中获取待备份数据,进而直接将待备份数据传输至第一设备的持久化内存,以使第一设备的持久化内存存储待备份数据。可见,该技术方案在整个数据备份过程中,并不需要第一设备或第二设备的CPU参与(即无需CPU与任一设备或设备中的内存进行交互),而只需利用第一设备内设的RDMA网卡直接从第二设备中获取待备份数据并传输至持久化内存即可完成数据备份,因此极大地提高了数据备份的效率。并且,基于持久化内存能够保证其内部存储的数据不丢失的特性,该技术方案还能避免传统的固态硬盘带来的高延迟及数据丢失问题,实现了高效备份数据的效果。
综上,已经对本主题的特定实施例进行了描述。其它实施例在所附权利要求书的范围内。在一些情况下,在权利要求书中记载的动作可以按照不同的顺序来执行并且仍然可以实现期望的结果。另外,在附图中描绘的过程不一定要求示出的特定顺序或者连续顺序,以实现期望的结果。在某些实施方式中,多任务处理和并行处理可以是有利的。
以上为本说明书一个或多个实施例提供的数据备份方法,基于同样的思路,本说明书一个或多个实施例还提供一种数据备份装置。
图4是根据本说明书一实施例的一种数据备份装置的示意性流程图,如图4所示,数据备份装置400应用于第一设备内设的RDMA网卡,包括:
建立模块410,用于响应于第二设备发送的数据备份请求,建立与第二设备之间的RDMA网络连接关系;其中,数据备份请求包括待备份数据的标识信息;
获取模块420,用于基于RDMA网络连接关系,从第二设备中获取标识信息对应的待备份数据;
传输模块430,用于将待备份数据传输至第一设备的内存,以使第一设备的内存存储待备份数据。
在一个实施例中,第一设备的内存为持久化内存。
在一个实施例中,获取模块420包括:
查找单元,用于根据标识信息,从第二设备的内存中查找待备份数据;
获取单元,用于通过RDMA网络连接关系获取查找到的待备份数据。
在一个实施例中,装置400还包括:
监测模块,用于在将待备份数据传输至第一设备的内存之后,监测待备份数据在第一设备的内存中的存储状态;
生成模块,用于当存储状态为存储完成时,生成待备份数据已成功备份的第一信息;
发送模块,用于将第一信息发送至第二设备。
在一个实施例中,装置400还包括:
接收模块,用于在监测待备份数据在第一设备的内存中的存储状态之前,接收第二设备发送的用于确认待备份数据是否已成功备份的确认信息。
采用本说明书一个或多个实施例的装置,通过第一设备内设的RDMA网卡,建立第一设备与第二设备之间的RDMA网络连接关系,并基于该RDMA网络连接关系从第二设备中获取待备份数据,进而直接将待备份数据传输至第一设备的内存,以使第一设备的内存存储待备份数据。可见,该技术方案在整个数据备份过程中,并不需要第一设备或第二设备的CPU参与(即无需CPU与任一设备或设备中的内存进行交互),而只需利用第一设备内设的RDMA网卡直接从第二设备中获取待备份数据并传输至内存即可完成数据备份,因此极大地提高了数据备份的效率。
进一步地,由于第一设备中的内存为持久化内存,因此相较于传统的采用固态硬盘备份数据的方式而言,该装置能够避免固态硬盘带来的高延迟问题,实现了高效备份数据的效果。
本领域的技术人员应可理解,上述数据备份装置能够用来实现前文所述的数据备份方法,其中的细节描述应与前文方法部分描述类似,为避免繁琐,此处不另赘述。
基于同样的思路,本说明书一个或多个实施例还提供一种数据备份设备,如图5所示。数据备份设备可因配置或性能不同而产生比较大的差异,可以包括一个或一个以上的处理器501和存储器502,存储器502中可以存储有一个或一个以上存储应用程序或数据。其中,存储器502可以是短暂存储或持久存储。存储在存储器502的应用程序 可以包括一个或一个以上模块(图示未示出),每个模块可以包括对数据备份设备中的一系列计算机可执行指令。更进一步地,处理器501可以设置为与存储器502通信,在数据备份设备上执行存储器502中的一系列计算机可执行指令。数据备份设备还可以包括一个或一个以上电源503,一个或一个以上有线或无线网络接口504,一个或一个以上输入输出接口505,一个或一个以上键盘506。
具体在本实施例中,数据备份设备包括有存储器,以及一个或一个以上的程序,其中一个或者一个以上程序存储于存储器中,且一个或者一个以上程序可以包括一个或一个以上模块,且每个模块可以包括对数据备份设备中的一系列计算机可执行指令,且经配置以由一个或者一个以上处理器执行该一个或者一个以上程序包含用于进行以下计算机可执行指令:
响应于第二设备发送的数据备份请求,建立与所述第二设备之间的RDMA网络连接关系;其中,所述数据备份请求包括待备份数据的标识信息;
基于所述RDMA网络连接关系,从所述第二设备中获取所述标识信息对应的所述待备份数据;
将所述待备份数据传输至所述第一设备的内存,以使所述第一设备的内存存储所述待备份数据。
可选地,所述第一设备的内存为持久化内存。
可选地,计算机可执行指令在被执行时,还可以使所述处理器:
根据所述标识信息,从所述第二设备的内存中查找所述待备份数据;
通过所述RDMA网络连接关系获取查找到的所述待备份数据。
可选地,计算机可执行指令在被执行时,还可以使所述处理器:
在将所述待备份数据传输至所述第一设备的内存之后,监测所述待备份数据在所述第一设备的内存中的存储状态;
当所述存储状态为存储完成时,生成所述待备份数据已成功备份的第一信息;
将所述第一信息发送至所述第二设备。
可选地,计算机可执行指令在被执行时,还可以使所述处理器:
在监测所述待备份数据在所述第一设备的内存中的存储状态之前,接收所述第 二设备发送的用于确认所述待备份数据是否已成功备份的确认信息。
本说明书一个或多个实施例还提出了一种计算机可读存储介质,该计算机可读存储介质存储一个或多个程序,该一个或多个程序包括指令,该指令当被包括多个应用程序的电子设备执行时,能够使该电子设备执行上述数据备份方法,并具体用于执行:
响应于第二设备发送的数据备份请求,建立与所述第二设备之间的RDMA网络连接关系;其中,所述数据备份请求包括待备份数据的标识信息;
基于所述RDMA网络连接关系,从所述第二设备中获取所述标识信息对应的所述待备份数据;
将所述待备份数据传输至所述第一设备的内存,以使所述第一设备的内存存储所述待备份数据。
上述实施例阐明的系统、装置、模块或单元,具体可以由计算机芯片或实体实现,或者由具有某种功能的产品来实现。一种典型的实现设备为计算机。具体的,计算机例如可以为个人计算机、膝上型计算机、蜂窝电话、相机电话、智能电话、个人数字助理、媒体播放器、导航设备、电子邮件设备、游戏控制台、平板计算机、可穿戴设备或者这些设备中的任何设备的组合。
为了描述的方便,描述以上装置时以功能分为各种单元分别描述。当然,在实施本说明书一个或多个实施例时可以把各单元的功能在同一个或多个软件和/或硬件中实现。
本领域内的技术人员应明白,本说明书一个或多个实施例可提供为方法、系统、或计算机程序产品。因此,本说明书一个或多个实施例可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本说明书一个或多个实施例可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本说明书一个或多个实施例是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框 图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
在一个典型的配置中,计算设备包括一个或多个处理器(CPU)、输入/输出接口、网络接口和内存。
内存可能包括计算机可读介质中的非永久性存储器,随机存取存储器(RAM)和/或非易失性内存等形式,如只读存储器(ROM)或闪存(flash RAM)。内存是计算机可读介质的示例。
计算机可读介质包括永久性和非永久性、可移动和非可移动媒体可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括,但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带,磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质,可用于存储可以被计算设备访问的信息。按照本文中的界定,计算机可读介质不包括暂存电脑可读媒体(transitory media),如调制的数据信号和载波。
还需要说明的是,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法、商品或者设备中还存在另外的相同要素。
本说明书一个或多个实施例可以在由计算机执行的计算机可执行指令的一般上 下文中描述,例如程序模块。一般地,程序模块包括执行特定任务或实现特定抽象数据类型的例程、程序、对象、组件、数据结构等等。也可以在分布式计算环境中实践本申请,在这些分布式计算环境中,由通过通信网络而被连接的远程处理设备来执行任务。在分布式计算环境中,程序模块可以位于包括存储设备在内的本地和远程计算机存储介质中。
本说明书中的各个实施例均采用递进的方式描述,各个实施例之间相同相似的部分互相参见即可,每个实施例重点说明的都是与其他实施例的不同之处。尤其,对于系统实施例而言,由于其基本相似于方法实施例,所以描述的比较简单,相关之处参见方法实施例的部分说明即可。
以上所述仅为本说明书一个或多个实施例而已,并不用于限制本说明书。对于本领域技术人员来说,本说明书一个或多个实施例可以有各种更改和变化。凡在本说明书一个或多个实施例的精神和原理之内所作的任何修改、等同替换、改进等,均应包含在本说明书一个或多个实施例的权利要求范围之内。

Claims (12)

  1. 一种数据备份方法,应用于第一设备内设的RDMA网卡,所述方法包括:
    响应于第二设备发送的数据备份请求,建立与所述第二设备之间的RDMA网络连接关系;其中,所述数据备份请求包括待备份数据的标识信息;
    基于所述RDMA网络连接关系,从所述第二设备中获取所述标识信息对应的所述待备份数据;
    将所述待备份数据传输至所述第一设备的内存,以使所述第一设备的内存存储所述待备份数据。
  2. 根据权利要求1所述的方法,所述第一设备的内存为持久化内存。
  3. 根据权利要求1所述的方法,所述从所述第二设备中获取所述标识信息对应的所述待备份数据,包括:
    根据所述标识信息,从所述第二设备的内存中查找所述待备份数据;
    通过所述RDMA网络连接关系获取查找到的所述待备份数据。
  4. 根据权利要求2所述的方法,在将所述待备份数据传输至所述第一设备的内存之后,还包括:
    监测所述待备份数据在所述第一设备的内存中的存储状态;
    当所述存储状态为存储完成时,生成所述待备份数据已成功备份的第一信息;
    将所述第一信息发送至所述第二设备。
  5. 根据权利要求4所述的方法,在监测所述待备份数据在所述第一设备的内存中的存储状态之前,还包括:
    接收所述第二设备发送的用于确认所述待备份数据是否已成功备份的确认信息。
  6. 一种数据备份装置,应用于第一设备内设的RDMA网卡,所述装置包括:
    建立模块,用于响应于第二设备发送的数据备份请求,建立与所述第二设备之间的RDMA网络连接关系;其中,所述数据备份请求包括待备份数据的标识信息;
    获取模块,用于基于所述RDMA网络连接关系,从所述第二设备中获取所述标识信息对应的所述待备份数据;
    传输模块,用于将所述待备份数据传输至所述第一设备的内存,以使所述第一设备的内存存储所述待备份数据。
  7. 根据权利要求6所述的装置,所述第一设备的内存为持久化内存。
  8. 根据权利要求6所述的装置,所述获取模块包括:
    查找单元,用于根据所述标识信息,从所述第二设备的内存中查找所述待备份数据;
    获取单元,用于通过所述RDMA网络连接关系获取查找到的所述待备份数据。
  9. 根据权利要求7所述的装置,还包括:
    监测模块,用于在将所述待备份数据传输至所述第一设备的内存之后,监测所述待备份数据在所述第一设备的内存中的存储状态;
    生成模块,用于当所述存储状态为存储完成时,生成所述待备份数据已成功备份的第一信息;
    发送模块,用于将所述第一信息发送至所述第二设备。
  10. 根据权利要求9所述的装置,还包括:
    接收模块,用于在监测所述待备份数据在所述第一设备的内存中的存储状态之前,接收所述第二设备发送的用于确认所述待备份数据是否已成功备份的确认信息。
  11. 一种数据备份设备,应用于第一设备内设的RDMA网卡,包括:
    处理器;以及
    被安排成存储计算机可执行指令的存储器,所述可执行指令在被执行时使所述处理器:
    响应于第二设备发送的数据备份请求,建立与所述第二设备之间的RDMA网络连接关系;其中,所述数据备份请求包括待备份数据的标识信息;
    基于所述RDMA网络连接关系,从所述第二设备中获取所述标识信息对应的所述待备份数据;
    将所述待备份数据传输至所述第一设备的内存,以使所述第一设备的内存存储所述待备份数据。
  12. 一种存储介质,用于存储计算机可执行指令,所述可执行指令在被执行时实现以下流程:
    响应于第二设备发送的数据备份请求,建立与所述第二设备之间的RDMA网络连接关系;其中,所述数据备份请求包括待备份数据的标识信息;
    基于所述RDMA网络连接关系,从所述第二设备中获取所述标识信息对应的所述待备份数据;
    将所述待备份数据传输至所述第一设备的内存,以使所述第一设备的内存存储所述待备份数据。
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