WO2023000535A1 - 一种云卷扩容的方法、装置、设备及可读介质 - Google Patents

一种云卷扩容的方法、装置、设备及可读介质 Download PDF

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WO2023000535A1
WO2023000535A1 PCT/CN2021/127508 CN2021127508W WO2023000535A1 WO 2023000535 A1 WO2023000535 A1 WO 2023000535A1 CN 2021127508 W CN2021127508 W CN 2021127508W WO 2023000535 A1 WO2023000535 A1 WO 2023000535A1
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snapshot
cloud
volume
cloud backup
bitmap
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PCT/CN2021/127508
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English (en)
French (fr)
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王鹏飞
孟宪伟
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苏州浪潮智能科技有限公司
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Priority to US18/259,837 priority Critical patent/US11886305B2/en
Publication of WO2023000535A1 publication Critical patent/WO2023000535A1/zh

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601Interfaces specially adapted for storage systems
    • G06F3/0602Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/0614Improving the reliability of storage systems
    • 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
    • G06F11/1448Management of the data involved in backup or backup restore
    • 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
    • G06F11/1448Management of the data involved in backup or backup restore
    • G06F11/1451Management of the data involved in backup or backup restore by selection of backup contents
    • 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
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601Interfaces specially adapted for storage systems
    • G06F3/0628Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0638Organizing or formatting or addressing of data
    • G06F3/0644Management of space entities, e.g. partitions, extents, pools
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601Interfaces specially adapted for storage systems
    • G06F3/0668Interfaces specially adapted for storage systems adopting a particular infrastructure
    • G06F3/067Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0896Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/1097Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2201/00Indexing scheme relating to error detection, to error correction, and to monitoring
    • G06F2201/84Using snapshots, i.e. a logical point-in-time copy of the data

Definitions

  • This field relates to the computer field, and more specifically relates to a method, device, device and readable medium for expanding the capacity of cloud volumes.
  • Cloud volume is a point-in-time data protection technology that uploads data at a certain point in local storage to cloud storage for backup. Also for data backup, cloud backup has the following advantages compared to local data backup: less cost, no need for additional factory buildings, power supply facilities, etc., only need to have a network; simple maintenance, no need for additional storage Maintenance personnel, internal maintenance is handled by their respective cloud service providers.
  • the existing cloud backup technology supports full data backup and incremental data backup.
  • all data in the cloud volume will be uploaded to the cloud.
  • the cloud backup operation is performed again later, only the changed data in the volume will be uploaded, which will greatly save the cloud storage usage.
  • Cloud backup technology is implemented based on snapshot technology.
  • a snapshot will be created for the cloud volume first, and the snapshot volume will store the data at that moment of the cloud volume. Afterwards, no matter how the data in the cloud volume changes, the data in the snapshot volume will not be affected. Finally, the data will be read from the snapshot volume and uploaded to the cloud. When the data upload is complete, the cloud backup task ends.
  • snapshot A When cloud backup is started for the third time, snapshot A will be started again, and then based on the bitmap of snapshot B, the corresponding data (that is, the changed data) will be read from snapshot A and uploaded to the cloud. If the cloud volume data changes during this process, the bitmap of snapshot A will record the location of the changed data. When the current cloud backup task is completed, stop the snapshot B and clear the bitmap of B. In this way, the two snapshots of A and B are started in turn, realizing the cloud migration of incremental data.
  • Volume expansion technology can increase the capacity of an existing volume so as to store more data.
  • cloud volumes do not support volume expansion operations. If you want to expand it, you must stop the cloud backup operation and delete its two snapshots. Then expand. After the capacity expansion is completed, the configuration of the cloud volume needs to be restored to realize the subsequent cloud backup function. This operation is not only cumbersome, but also cannot start incremental data backup immediately after the cloud volume is restored. You can only perform a full backup before proceeding with an incremental backup.
  • the purpose of the embodiments of the present application is to propose a method, device, device, and readable medium for expanding the capacity of cloud volumes.
  • the capacity of cloud volumes can be expanded during the execution of cloud backup tasks. , and can guarantee the accuracy of cloud data.
  • an aspect of the embodiments of the present application provides a method for expanding the capacity of cloud volumes, including the following steps:
  • Expand the bitmap of another snapshot that has not been started during the cloud backup process and set all the expanded bitmaps to the second preset value.
  • it also includes:
  • all the bitmaps of one snapshot are set to 1, and the other snapshot performs data copying based on the bitmap of one snapshot.
  • it also includes:
  • Expand the bitmap of another snapshot that has not been started during the cloud backup process and set all the expanded bitmaps to the second preset value.
  • expanding the bitmap of the snapshot started by this cloud backup, and setting all the bitmaps obtained by the expansion as the first preset value includes:
  • expanding the bitmap of another snapshot that has not been started during the cloud backup process, and setting all the bitmaps obtained from the expansion to the second preset value includes:
  • a device for expanding the capacity of a cloud volume includes:
  • the judging module is configured to respond to receiving the instruction of cloud volume expansion in the process of cloud backup, judge whether there is an IO request of host in the cloud volume and confirm the snapshot that this cloud backup starts;
  • the first expansion module is configured to expand the snapshot volume and cloud volume of the snapshot started by this cloud backup in response to the IO request of no host in the cloud volume;
  • the second expansion module is configured to expand the bitmap of the snapshot started by this cloud backup, and set all the bitmaps obtained by the expansion to the first preset value;
  • the third expansion module is configured to expand the snapshot volume of another snapshot that has not been started during the cloud backup process after waiting for the completion of the cloud backup task;
  • the fourth expansion module is configured to expand the bitmap of another snapshot that has not been started during the cloud backup process, and set all the expanded bitmaps to the second preset value.
  • a startup module is also included, and the startup module is configured as:
  • all the bitmaps of one snapshot are set to 1, and the other snapshot performs data copying based on the bitmap of one snapshot.
  • the recovery module is configured to:
  • Expand the bitmap of another snapshot that has not been started during the cloud backup process and set all the expanded bitmaps to the second preset value.
  • a computer device in another aspect of the embodiments of the present application, includes:
  • Memory stores computer instructions that can be run on the processor, and when the instructions are executed by the processor, the steps of any one of the above-mentioned methods are realized.
  • Another aspect of the embodiments of the present application further provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the steps of any one of the above methods are implemented.
  • the method for expanding the capacity of the cloud volume provided by the embodiment of the present application can determine whether there is an IO request from the host in the cloud volume and confirm this The snapshot started by the second cloud backup; in response to the IO request of no host in the cloud volume, expand the snapshot volume and cloud volume of the snapshot started by this cloud backup; expand the bitmap of the snapshot started by this cloud backup, and Set all the expanded bitmaps to the first preset value; wait for the completion of this cloud backup task to expand the snapshot volume of another snapshot that has not been started during this cloud backup;
  • the technical scheme that expands the bitmap of another snapshot that has not been started, and sets all the expanded bitmaps to the second preset value can expand the cloud volume during the execution of the cloud backup task, and can ensure that Accuracy of cloud data.
  • FIG. 1 is a schematic flowchart of a method for expanding the capacity of a cloud volume according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of a device for expanding cloud volume according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a computer device according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a computer-readable storage medium according to one embodiment of the present application.
  • Figure 1 shows a schematic flowchart of the method.
  • the method may include the following steps:
  • S1 in response to receiving a cloud volume expansion command during the cloud backup process, determines whether there is an IO request from the host in the cloud volume and confirms the snapshot started by the cloud backup.
  • S2 expands the snapshot volume and cloud volume of the snapshot started by this cloud backup in response to the IO request of no host in the cloud volume.
  • S3 expands the bitmap of the snapshot started by this cloud backup, and sets all the expanded bitmaps to the first preset value.
  • the corresponding expansion is performed on the bitmap of the snapshot started by this cloud backup, and all bits of the bitmap obtained by the expansion are set to 1. Since the snapshot is data protection based on point in time, when the snapshot is created, the cloud volume has no newly expanded space. Therefore, after the cloud volume is expanded, the data in the latter space does not need to be uploaded to the cloud this time, but it will be needed next time. Incremental uploads are uploaded to the cloud, so it is necessary to set all the bitmaps in this space to 1. If the IO request of the host is suspended, the IO request of the host can be resumed.
  • S4 waits for the completion of the cloud backup task to expand the snapshot volume of another snapshot that has not been started during the cloud backup.
  • S5 expands the bitmap of another snapshot that has not been started during this cloud backup process, and sets all the expanded bitmaps to the second preset value.
  • the cloud volume, snapshot volume 1, and snapshot volume 2 are all expanded capacity, and the bitmap of the snapshot 1 will also mark the bitmap of the newly expanded part as 1, so that the cloud backup started again.
  • the newly expanded data will be regarded as changed data, and they will also be uploaded to the cloud to ensure the accuracy of the cloud data.
  • the cloud volume can be expanded during the execution of the cloud backup task, and the accuracy of the cloud data can be guaranteed.
  • all the bitmaps of one snapshot are set to 1, and the other snapshot performs data copying based on the bitmap of one snapshot.
  • the first cloud backup is to directly upload the full amount of data according to the bitmap of the first snapshot.
  • the bitmap of the first snapshot is also expanded, which will cause more data in the cloud volume after expansion to be stored on the cloud.
  • set all the bitmaps of the second snapshot to 1, and then perform data transmission according to the bitmap of the second snapshot. Since the bitmap expansion of the second snapshot occurs after the first cloud backup is completed, it will not affect the data uploaded in the first cloud backup.
  • expanding the bitmap of the snapshot started by this cloud backup, and setting all the bitmaps obtained from the expansion to the first preset value includes:
  • expanding the bitmap of another snapshot that has not been started during this cloud backup, and setting all the bitmaps obtained from the expansion to the second preset value includes:
  • the cloud volume can be expanded during the execution of the cloud backup task, and the accuracy of the cloud data can be guaranteed.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM).
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • the method disclosed according to the embodiment of the present application may also be implemented as a computer program executed by a CPU, and the computer program may be stored in a computer-readable storage medium.
  • the computer program is executed by the CPU, the above functions defined in the methods disclosed in the embodiments of the present application are executed.
  • the second aspect of the embodiment of the present application proposes a cloud volume expansion device, as shown in Figure 2, the device 200 includes:
  • the judging module is configured to respond to the instruction of cloud volume expansion received in the process of cloud backup, judge whether there is an IO request of the host in the cloud volume and confirm the snapshot of this cloud backup startup;
  • the first expansion module is configured to expand the snapshot volume and cloud volume of the snapshot started by this cloud backup in response to the IO request of no host in the cloud volume;
  • the second expansion module is configured to expand the bitmap of the snapshot started by this cloud backup, and all the bitmaps obtained by the expansion are set to the first preset value;
  • the third expansion module is configured to expand the snapshot volume of another snapshot that has not been started during the cloud backup process after waiting for the completion of the cloud backup task;
  • the fourth expansion module is configured to expand the bitmap of another snapshot that has not been started during the cloud backup process, and set all the expanded bitmaps to the second preset value.
  • a startup module is also included, and the startup module is configured as:
  • all the bitmaps of one snapshot are set to 1, and the other snapshot performs data copying based on the bitmap of one snapshot.
  • a recovery module is also included, and the recovery module is configured to:
  • Expand the bitmap of another snapshot that has not been started during the cloud backup process and set all the expanded bitmaps to the second preset value.
  • FIG. 3 is a schematic diagram of an embodiment of a computer device provided by the present application.
  • the embodiment of the present application includes the following devices: at least one processor S21; and a memory S22, the memory S22 stores computer instructions S23 that can run on the processor, and the instructions are executed by the processor to implement the following methods:
  • Expand the bitmap of another snapshot that has not been started during the cloud backup process and set all the expanded bitmaps to the second preset value.
  • all the bitmaps of one snapshot are set to 1, and the other snapshot performs data copying based on the bitmap of one snapshot.
  • Expand the bitmap of another snapshot that has not been started during the cloud backup process and set all the expanded bitmaps to the second preset value.
  • expanding the bitmap of the snapshot started by this cloud backup, and setting all the bitmaps obtained from the expansion to the first preset value includes:
  • expanding the bitmap of another snapshot that has not been started during this cloud backup, and setting all the bitmaps obtained from the expansion to the second preset value includes:
  • FIG. 4 shows a schematic diagram of an embodiment of a computer-readable storage medium provided by the present application.
  • the computer-readable storage medium stores S31 a computer program S32 for performing the above method when executed by a processor.
  • the method disclosed according to the embodiment of the present application may also be implemented as a computer program executed by a processor, and the computer program may be stored in a computer-readable storage medium.
  • the computer program is executed by the processor, the above functions defined in the methods disclosed in the embodiments of the present application are executed.
  • the above-mentioned method steps and system units can also be realized by using a controller and a computer-readable storage medium for storing a computer program for enabling the controller to realize the functions of the above-mentioned steps or units.
  • functions may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. Storage media may be any available media that can be accessed by a general purpose or special purpose computer.
  • the computer readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage device, magnetic disk storage device or other magnetic storage device, or may be used to carry or store instructions in Any other medium that can be accessed by a general purpose or special purpose computer or a general purpose or special purpose processor, and the required program code or data structure. Also, any connection is properly termed a computer-readable medium.
  • Disk and disc includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers . Combinations of the above should also be included within the scope of computer-readable media.
  • the storage medium may be a read-only memory, a magnetic disk or an optical disk, and the like.

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Abstract

一种云卷扩容的方法、装置、设备及可读介质,该方法包括:响应于在云备份的过程中接收到云卷扩容的指令,判断云卷中是否有主机的IO请求并确认本次云备份启动的快照(S1);响应于云卷中没有主机的IO请求,对本次云备份启动的快照的快照卷和云卷进行扩容(S2);对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值(S3);等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容(S4);对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值(S5)。通过使用该方法,能够在云备份任务执行过程中对云卷进行扩容操作,并且能够保证云端数据的准确性。

Description

一种云卷扩容的方法、装置、设备及可读介质
本申请要求在2021年07月19日提交中国专利局、申请号为202110812302.9、发明名称为“一种云卷扩容的方法、装置、设备及可读介质”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本领域涉及计算机领域,并且更具体地涉及一种云卷扩容的方法、装置、设备及可读介质。
背景技术
云卷是一种基于时间点的数据保护技术,会将本地存储中某一时刻的数据上传到云存储中进行备份。同样是数据的备份,云备份相比于本地的数据备份有以下优势:成本少,不需要配备额外的厂房,供电设施等,只需要有网络便可进行;维护简单,不需要额外配备存储的维护人员,内部维护由各自云服务商解决。
现有的云备份技术支持全量数据备份和增量数据备份。在首次执行云备份操作时,会将云卷中的全部数据上传到云端。后续再次执行云备份操作时,只会将该卷中发生变化的数据进行上传,这样会大大节省云端存储的占用量。
云备份技术是基于快照技术实现的。在执行云备份任务时,会先对云卷创建一个快照,该快照卷中保存的便是云卷那一时刻的数据。之后无论云卷的数据如何变化,快照卷的数据都不受影响。最后会从快照卷中读出数据上传到云端。当数据上传完成后,本次云备份任务结束。
首次启动云备份时,启动快照A,系统从快照卷A中读取数据上传到 云。这个过程中,如果云卷的数据发生了改变,快照A的位图会记录这些变化的数据的位置。再次启动云备份,会启动快照B,然后以快照A的位图为基准,从快照B中读出对应的数据(即发生变化的数据)上传到云端。这个过程中如果云卷数据发生了改变,快照B的位图会记录这些变化的数据的位置。当本次云备份任务完成数时,停止快照A,清除掉A的位图。第三次启动云备份,会再次启动快照A,然后以快照B的位图为基准,从快照A中读出对应的数据(即发生变化的数据)上传到云端。这个过程中如果云卷数据发生了改变,快照A的位图会记录这些变化的数据的位置。当本次云备份任务完成数时,停止快照B,清除掉B的位图。就这样,A和B两个快照轮流启动,实现了增量数据的上云。
卷扩容技术可以使一个已有的卷容量增大,从而达到存储更多数据的目的。目前云卷不支持卷扩容操作。如果想要对其进行扩容,必须停止云备份操作,删除它的两个快照。然后再进行扩容。扩容完成后,还需要再恢复云卷的配置,以实现后续的云备份功能。这样操作不但繁琐,而且在云卷恢复后不能立即开始增量数据备份。只能先执行一次全量备份,然后才能继续执行增量备份。
发明内容
有鉴于此,本申请实施例的目的在于提出一种云卷扩容的方法、装置、设备及可读介质,通过使用本申请的技术方案,能够在云备份任务执行过程中对云卷进行扩容操作,并且能够保证云端数据的准确性。
基于上述目的,本申请的实施例的一个方面提供了一种云卷扩容的方法,包括以下步骤:
响应于在云备份的过程中接收到云卷扩容的指令,判断云卷中是否有主机的IO请求并确认本次云备份启动的快照;
响应于云卷中没有主机的IO请求,对本次云备份启动的快照的快照卷和云卷进行扩容;
对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部 设置为第一预设值;
等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容;
对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值。
根据本申请的一个实施例,还包括:
响应于首次启动云备份,将一个快照的位图全部置1,另一快照以一个快照的位图为基准进行数据拷贝。
根据本申请的一个实施例,还包括:
响应于云卷中有主机的IO请求,暂停主机的IO请求并对本次云备份启动的快照的快照卷和云卷进行扩容;
对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值;
恢复主机的IO请求,等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容;
对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值。
根据本申请的一个实施例,对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值包括:
将扩容得到的位图的bit位全部置1。
根据本申请的一个实施例,对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值包括:
将扩容得到的位图的bit位全部置0。
本申请的实施例的另一个方面,还提供了一种云卷扩容的装置,装置包括:
判断模块,判断模块配置为响应于在云备份的过程中接收到云卷扩容 的指令,判断云卷中是否有主机的IO请求并确认本次云备份启动的快照;
第一扩容模块,第一扩容模块配置为响应于云卷中没有主机的IO请求,对本次云备份启动的快照的快照卷和云卷进行扩容;
第二扩容模块,第二扩容模块配置为对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值;
第三扩容模块,第三扩容模块配置为等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容;
第四扩容模块,第四扩容模块配置为对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值。
根据本申请的一个实施例,还包括启动模块,启动模块配置为:
响应于首次启动云备份,将一个快照的位图全部置1,另一快照以一个快照的位图为基准进行数据拷贝。
根据本申请的一个实施例,还包括恢复模块,恢复模块配置为:
响应于云卷中有主机的IO请求,暂停主机的IO请求并对本次云备份启动的快照的快照卷和云卷进行扩容;
对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值;
恢复主机的IO请求,等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容;
对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值。
本申请的实施例的另一个方面,还提供了一种计算机设备,该计算机设备包括:
至少一个处理器;以及
存储器,存储器存储有可在处理器上运行的计算机指令,指令由处理器执行时实现上述任意一项方法的步骤。
本申请的实施例的另一个方面,还提供了一种计算机可读存储介质,计算机可读存储介质存储有计算机程序,计算机程序被处理器执行时实现上述任意一项方法的步骤。
本申请具有以下有益技术效果:本申请实施例提供的云卷扩容的方法,通过响应于在云备份的过程中接收到云卷扩容的指令,判断云卷中是否有主机的IO请求并确认本次云备份启动的快照;响应于云卷中没有主机的IO请求,对本次云备份启动的快照的快照卷和云卷进行扩容;对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值;等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容;对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值的技术方案,能够在云备份任务执行过程中对云卷进行扩容操作,并且能够保证云端数据的准确性。
附图说明
为了更清楚地说明本申请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申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的实施例。
图1为根据本申请一个实施例的云卷扩容的方法的示意性流程图;
图2为根据本申请一个实施例的云卷扩容的装置的示意图;
图3为根据本申请一个实施例的计算机设备的示意图;
图4为根据本申请一个实施例的计算机可读存储介质的示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚明白,以下结合具体实施例,并参照附图,对本申请实施例进一步详细说明。
基于上述目的,本申请的实施例的第一个方面,提出了一种云卷扩容的方法的一个实施例。图1示出的是该方法的示意性流程图。
如图1中所示,该方法可以包括以下步骤:
S1响应于在云备份的过程中接收到云卷扩容的指令,判断云卷中是否有主机的IO请求并确认本次云备份启动的快照。
如果云卷中有主机的IO请求,则需要将主机的IO请求暂停后进行扩容,云备份的过程中会启动两个快照中的一个,需要判断本次的云备份启动了哪个快照。
S2响应于云卷中没有主机的IO请求,对本次云备份启动的快照的快照卷和云卷进行扩容。
如果没有主机的IO请求,则直接对本次云备份启动的快照的快照卷和云卷进行扩容,如果有主机的IO请求,则需要先暂停主机的IO请求,然后对本次云备份启动的快照的快照卷和云卷进行扩容。
S3对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值。
快照卷和云卷扩容完成后,对本次云备份启动的快照的位图进行相应的扩容,并将扩容得到的位图的bit位全部置1。由于快照是基于时间点的数据保护,在创建快照的时候,云卷没有后面新扩充的空间,因此在云卷扩容后,后面这些空间的数据在本次不需要上传到云端,但是在下次需要增量上传到云端,因此需要将这部分空间的位图全部置为1。如果前面暂停了主机的IO请求,则可以将主机的IO请求进行恢复。
S4等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容。
云备份中通常有两个快照和快照卷,当本次云备份任务完成后,对另一个没启动的快照的快照卷进行扩容。
S5对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值。
对另一个没启动的快照的位图进行相应的扩容,并将扩容得到的位图的bit位全部置0。
如果再次启动云备份操作,云卷、快照卷1和快照卷2都是扩容之后的容量了,并且快照1的位图也将新扩容部分的位图标记为1,这样再次启动的这个云备份便会将新扩容的数据认作发生变化的数据,从而会将他们也上传到云端,保证了云端数据的准确性。
通过本申请的技术方案,能够在云备份任务执行过程中对云卷进行扩容操作,并且能够保证云端数据的准确性。
在本申请的一个优选实施例中,还包括:
响应于首次启动云备份,将一个快照的位图全部置1,另一快照以一个快照的位图为基准进行数据拷贝。
在首次执行云备份时,如果要进行扩容操作,可以保证云上数据的准确性。因为扩容操作在首次启动云备份之后且首次完成之前,云上应该保存的是扩容之前的数据的样子。但是在原有逻辑中,首次的云备份是直接按照第一快照的位图进行全量数据上传。当扩容完成后,第一快照的位图也被扩容了,这样就会导致云上多存储了扩容之后云卷的数据。在首次启动时,将第二快照的位图全部置为1,然后根据第二快照的位图进行数据传输。由于第二快照的位图扩容发生在首次云备份完成之后,因此不会影响到首次云备份上传的数据。
在本申请的一个优选实施例中,还包括:
响应于云卷中有主机的IO请求,暂停主机的IO请求并对本次云备份启动的快照的快照卷和云卷进行扩容;
对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值;
恢复主机的IO请求,等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容;
对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩 容得到的位图全部设置为第二预设值。
在本申请的一个优选实施例中,对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值包括:
将扩容得到的位图的bit位全部置1。
在本申请的一个优选实施例中,对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值包括:
将扩容得到的位图的bit位全部置0。
通过本申请的技术方案,能够在云备份任务执行过程中对云卷进行扩容操作,并且能够保证云端数据的准确性。
需要说明的是,本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程,可以通过计算机程序来指令相关硬件来完成,上述的程序可存储于计算机可读取存储介质中,该程序在执行时,可包括如上述各方法的实施例的流程。其中存储介质可为磁碟、光盘、只读存储器(Read-Only Memory,ROM)或随机存取存储器(Random Access Memory,RAM)等。上述计算机程序的实施例,可以达到与之对应的前述任意方法实施例相同或者相类似的效果。
此外,根据本申请实施例公开的方法还可以被实现为由CPU执行的计算机程序,该计算机程序可以存储在计算机可读存储介质中。在该计算机程序被CPU执行时,执行本申请实施例公开的方法中限定的上述功能。
基于上述目的,本申请的实施例的第二个方面,提出了一种云卷扩容的装置,如图2所示,装置200包括:
判断模块,判断模块配置为响应于在云备份的过程中接收到云卷扩容的指令,判断云卷中是否有主机的IO请求并确认本次云备份启动的快照;
第一扩容模块,第一扩容模块配置为响应于云卷中没有主机的IO请求,对本次云备份启动的快照的快照卷和云卷进行扩容;
第二扩容模块,第二扩容模块配置为对本次云备份启动的快照的位图 进行扩容,并将扩容得到的位图全部设置为第一预设值;
第三扩容模块,第三扩容模块配置为等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容;
第四扩容模块,第四扩容模块配置为对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值。
在本申请的一个优选实施例中,还包括启动模块,启动模块配置为:
响应于首次启动云备份,将一个快照的位图全部置1,另一快照以一个快照的位图为基准进行数据拷贝。
在本申请的一个优选实施例中,还包括恢复模块,恢复模块配置为:
响应于云卷中有主机的IO请求,暂停主机的IO请求并对本次云备份启动的快照的快照卷和云卷进行扩容;
对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值;
恢复主机的IO请求,等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容;
对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值。
基于上述目的,本申请实施例的第三个方面,提出了一种计算机设备。图3示出的是本申请提供的计算机设备的实施例的示意图。如图3所示,本申请实施例包括如下装置:至少一个处理器S21;以及存储器S22,存储器S22存储有可在处理器上运行的计算机指令S23,指令由处理器执行时实现以下方法:
响应于在云备份的过程中接收到云卷扩容的指令,判断云卷中是否有主机的IO请求并确认本次云备份启动的快照;
响应于云卷中没有主机的IO请求,对本次云备份启动的快照的快照卷和云卷进行扩容;
对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值;
等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容;
对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值。
在本申请的一个优选实施例中,还包括:
响应于首次启动云备份,将一个快照的位图全部置1,另一快照以一个快照的位图为基准进行数据拷贝。
在本申请的一个优选实施例中,还包括:
响应于云卷中有主机的IO请求,暂停主机的IO请求并对本次云备份启动的快照的快照卷和云卷进行扩容;
对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值;
恢复主机的IO请求,等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容;
对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值。
在本申请的一个优选实施例中,对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值包括:
将扩容得到的位图的bit位全部置1。
在本申请的一个优选实施例中,对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值包括:
将扩容得到的位图的bit位全部置0。
基于上述目的,本申请实施例的第四个方面,提出了一种计算机可读存储介质。图4示出的是本申请提供的计算机可读存储介质的实施例的示 意图。如图4所示,计算机可读存储介质存储S31有被处理器执行时执行如上方法的计算机程序S32。
此外,根据本申请实施例公开的方法还可以被实现为由处理器执行的计算机程序,该计算机程序可以存储在计算机可读存储介质中。在该计算机程序被处理器执行时,执行本申请实施例公开的方法中限定的上述功能。
此外,上述方法步骤以及系统单元也可以利用控制器以及用于存储使得控制器实现上述步骤或单元功能的计算机程序的计算机可读存储介质实现。
本领域技术人员还将明白的是,结合这里的公开所描述的各种示例性逻辑块、模块、电路和算法步骤可以被实现为电子硬件、计算机软件或两者的组合。为了清楚地说明硬件和软件的这种可互换性,已经就各种示意性组件、方块、模块、电路和步骤的功能对其进行了一般性的描述。这种功能是被实现为软件还是被实现为硬件取决于具体应用以及施加给整个系统的设计约束。本领域技术人员可以针对每种具体应用以各种方式来实现的功能,但是这种实现决定不应被解释为导致脱离本申请实施例公开的范围。
在一个或多个示例性设计中,功能可以在硬件、软件、固件或其任意组合中实现。如果在软件中实现,则可以将功能作为一个或多个指令或代码存储在计算机可读介质上或通过计算机可读介质来传送。计算机可读介质包括计算机存储介质和通信介质,该通信介质包括有助于将计算机程序从一个位置传送到另一个位置的任何介质。存储介质可以是能够被通用或专用计算机访问的任何可用介质。作为例子而非限制性的,该计算机可读介质可以包括RAM、ROM、EEPROM、CD-ROM或其它光盘存储设备、磁盘存储设备或其它磁性存储设备,或者是可以用于携带或存储形式为指令或数据结构的所需程序代码并且能够被通用或专用计算机或者通用或专用处理器访问的任何其它介质。此外,任何连接都可以适当地称为计算机可读介质。例如,如果使用同轴线缆、光纤线缆、双绞线、数字用户线路(DSL)或诸如红外线、无线电和微波的无线技术来从网站、服务器或其它 远程源发送软件,则上述同轴线缆、光纤线缆、双绞线、DSL或诸如红外线、无线电和微波的无线技术均包括在介质的定义。如这里所使用的,磁盘和光盘包括压缩盘(CD)、激光盘、光盘、数字多功能盘(DVD)、软盘、蓝光盘,其中磁盘通常磁性地再现数据,而光盘利用激光光学地再现数据。上述内容的组合也应当包括在计算机可读介质的范围内。
以上是本申请公开的示例性实施例,但是应当注意,在不背离权利要求限定的本申请实施例公开的范围的前提下,可以进行多种改变和修改。根据这里描述的公开实施例的方法权利要求的功能、步骤和/或动作不需以任何特定顺序执行。此外,尽管本申请实施例公开的元素可以以个体形式描述或要求,但除非明确限制为单数,也可以理解为多个。
应当理解的是,在本文中使用的,除非上下文清楚地支持例外情况,单数形式“一个”旨在也包括复数形式。还应当理解的是,在本文中使用的“和/或”是指包括一个或者一个以上相关联地列出的项目的任意和所有可能组合。
上述本申请实施例公开实施例序号仅仅为了描述,不代表实施例的优劣。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成,也可以通过程序来指令相关的硬件完成,程序可以存储于一种计算机可读存储介质中,上述提到的存储介质可以是只读存储器,磁盘或光盘等。
所属领域的普通技术人员应当理解:以上任何实施例的讨论仅为示例性的,并非旨在暗示本申请实施例公开的范围(包括权利要求)被限于这些例子;在本申请实施例的思路下,以上实施例或者不同实施例中的技术特征之间也可以进行组合,并存在如上的本申请实施例的不同方面的许多其它变化,为了简明它们没有在细节中提供。因此,凡在本申请实施例的精神和原则之内,所做的任何省略、修改、等同替换、改进等,均应包含在本申请实施例的保护范围之内。

Claims (10)

  1. 一种云卷扩容的方法,其特征在于,包括以下步骤:
    响应于在云备份的过程中接收到云卷扩容的指令,判断所述云卷中是否有主机的IO请求并确认本次云备份启动的快照;
    响应于所述云卷中没有主机的IO请求,对本次云备份启动的快照的快照卷和所述云卷进行扩容;
    对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值;
    等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容;
    对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值。
  2. 根据权利要求1所述的方法,其特征在于,还包括:
    响应于首次启动云备份,将一个快照的位图全部置1,另一快照以所述一个快照的位图为基准进行数据拷贝。
  3. 根据权利要求1所述的方法,其特征在于,还包括:
    响应于所述云卷中有主机的IO请求,暂停主机的IO请求并对本次云备份启动的快照的快照卷和所述云卷进行扩容;
    对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值;
    恢复主机的IO请求,等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容;
    对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值。
  4. 根据权利要求1所述的方法,其特征在于,对本次云备份启动的快照 的位图进行扩容,并将扩容得到的位图全部设置为第一预设值包括:
    将扩容得到的位图的bit位全部置1。
  5. 根据权利要求4所述的方法,其特征在于,对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值包括:
    将扩容得到的位图的bit位全部置0。
  6. 一种云卷扩容的装置,其特征在于,所述装置包括:
    判断模块,所述判断模块配置为响应于在云备份的过程中接收到云卷扩容的指令,判断所述云卷中是否有主机的IO请求并确认本次云备份启动的快照;
    第一扩容模块,所述第一扩容模块配置为响应于所述云卷中没有主机的IO请求,对本次云备份启动的快照的快照卷和所述云卷进行扩容;
    第二扩容模块,所述第二扩容模块配置为对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值;
    第三扩容模块,所述第三扩容模块配置为等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容;
    第四扩容模块,所述第四扩容模块配置为对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值。
  7. 根据权利要求6所述的装置,其特征在于,还包括启动模块,所述启动模块配置为:
    响应于首次启动云备份,将一个快照的位图全部置1,另一快照以所述一个快照的位图为基准进行数据拷贝。
  8. 根据权利要求6所述的装置,其特征在于,还包括恢复模块,所述恢复模块配置为:
    响应于所述云卷中有主机的IO请求,暂停主机的IO请求并对本次云备份启动的快照的快照卷和所述云卷进行扩容;
    对本次云备份启动的快照的位图进行扩容,并将扩容得到的位图全部设置为第一预设值;
    恢复主机的IO请求,等待本次云备份任务完成后对本次云备份的过程中未启动的另一个快照的快照卷进行扩容;
    对本次云备份的过程中未启动的另一个快照的位图进行扩容,并将扩容得到的位图全部设置为第二预设值。
  9. 一种计算机设备,其特征在于,包括:
    至少一个处理器;以及
    存储器,所述存储器存储有可在所述处理器上运行的计算机指令,所述指令由所述处理器执行时实现权利要求1至5任意一项所述方法的步骤。
  10. 一种计算机可读存储介质,所述计算机可读存储介质存储有计算机程序,其特征在于,所述计算机程序被处理器执行时实现权利要求1至5任意一项所述方法的步骤。
PCT/CN2021/127508 2021-07-19 2021-10-29 一种云卷扩容的方法、装置、设备及可读介质 WO2023000535A1 (zh)

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