Efficient live-mount of a backed up virtual machine in a storage management system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G06F-009/445
G06F-011/14
G06F-009/455
출원번호
US-0493244
(2014-09-22)
등록번호
US-9436555
(2016-09-06)
발명자
/ 주소
Dornemann, Henry Wallace
Pawar, Rahul S.
Kumarasamy, Paramasivam
Kilaru, Satish Chandra
Venkatesha, Ananda
출원인 / 주소
COMMVAULT SYSTEMS, INC.
대리인 / 주소
Knobbe, Martens, Olson & Bear LLP
인용정보
피인용 횟수 :
45인용 특허 :
181
초록▼
Systems and methods enable a virtual machine, including any applications executing thereon, to quickly start executing and servicing users based on pre-staged data blocks supplied from a backup copy in secondary storage. An enhanced media agent may pre-stage certain backed up data blocks which may b
Systems and methods enable a virtual machine, including any applications executing thereon, to quickly start executing and servicing users based on pre-staged data blocks supplied from a backup copy in secondary storage. An enhanced media agent may pre-stage certain backed up data blocks which may be needed to launch the virtual machine, based on predictive analysis pertaining to the virtual machine's operational profile. The enhanced media agent may also pre-stage backed up data blocks for a virtual-machine-file-relocation operation, based on the operation's relocation scheme. Servicing read requests to the virtual machine may take priority over ongoing pre-staging of backed up data. Read requests may be tracked so that the media agent may properly maintain the contents of an associated read cache. Some embodiments of the illustrative storage management system may lack, or may simply not require, the relocation operation, and may operate in a “live mount” configuration.
대표청구항▼
1. A method for executing a backed up virtual machine on a host computing device without restoring an entire backup copy of the virtual machine, based on pre-staging certain backed up data blocks to a media agent component of a storage management system, the method comprising: prior to execution of
1. A method for executing a backed up virtual machine on a host computing device without restoring an entire backup copy of the virtual machine, based on pre-staging certain backed up data blocks to a media agent component of a storage management system, the method comprising: prior to execution of the virtual machine, receiving, by the media agent from a data agent component of the storage management system, a profile of the virtual machine, wherein the media agent resides on a secondary storage computing device;determining, by the media agent, based on the profile of the virtual machine, a first set of data blocks to be copied from a backup copy of data associated with the virtual machine, wherein the backup copy is stored on a secondary storage device in communication with the media agent, and wherein the backup copy comprises at least one of a configuration file and a virtual disk associated with the virtual machine;copying the first set of data blocks, by the media agent from the backup copy to a read-cache associated with the media agent on the secondary storage computing device; andlaunching execution of the virtual machine on the host computing device, based on the first set of data blocks, which set of blocks is served by the media agent from the read-cache without restoring the entire backup copy of the virtual machine;wherein continuing execution of the virtual machine on the host computing device is based on the media agent serving further read requests without restoring the entire backup copy of the virtual machine; andwherein the profile of the virtual machine comprises at least one indication of a file associated with the virtual machine, which file is selected by a user via a file manager application, and wherein the backup copy also comprises a representation of the file selected by the user. 2. The method of claim 1 further comprising: during execution of the virtual machine on the host computing device, serving, by the media agent to the virtual machine, a read request for a data block, wherein serving the read request comprises: (i) copying the requested data block from the backup copy to the read-cache if the requested data block is not found in the read-cache, and(ii) transmitting the requested data block from the read-cache, via a recovery point associated with the virtual machine, in response to the read request. 3. A system for executing a backed up virtual machine on a host computing device in a live-mount configuration without restoring an entire backup copy of the virtual machine, based on pre-staging certain backed up data blocks to a media agent, the system comprising: the host computing device configured to execute the virtual machine based on a recovery point, wherein the host computing device comprises at least one central processing unit and corresponding computer memory;a secondary storage computing device in communication with the host computing device, wherein the secondary storage computing device comprises the media agent, a read-cache, and a shared file system that is configured as the recovery point for the virtual machine, wherein the secondary storage computing device comprises at least one central processing unit and corresponding computer memory;a secondary storage device in communication with the secondary storage computing device, wherein the secondary storage device comprises a backup copy of data associated with the virtual machine, wherein the backup copy comprises at least one of a configuration file and a virtual disk;a virtualization-client computing device in communication with the secondary storage computing device, wherein the virtualization-client computing device comprises a data agent, wherein the virtualization-client computing device comprises at least one central processing unit and corresponding computer memory; andwherein the media agent is configured to: receive the profile of the virtual machine from the data agent,determine a first set of data blocks to be copied from the backup copy, based on the profile of the virtual machine received from the data agent, andpre-stage the first set of data blocks by copying the first set of data blocks from the backup copy to the read-cache, andserve the pre-staged first set of data blocks to the host computing device via the recovery point when execution of the virtual machine is launched; andresulting in the virtual machine operating in a live-mount configuration on the host computing device and executing from the pre-staged first set of data blocks without the entire backup copy of data associated with the virtual machine being restored to a primary storage device serving the host computing device; andwherein continuing execution of the virtual machine in the live-mount configuration on the host computing device is based on the media agent serving further data blocks copied from the backup copy without restoring the entire backup copy of the virtual machine. 4. The system of claim 3 wherein the profile of the virtual machine comprises at least one indication of a file associated with the virtual machine, as selected by a user via a file manager application, and wherein the backup copy also comprises a representation of the file selected by the user, wherein the pre-staged first set of data blocks comprises backed up data blocks from the indicated file. 5. The system of claim 3 wherein the media agent is further configured to, during execution of the virtual machine on the host computing device: serve a read request for a data block to the virtual machine by: (i) copying the requested data block from the backup copy to the read-cache if the requested data block is not found in the read-cache, and (ii) transmitting the requested data block from the read-cache, via the recovery point, in response to the read request. 6. A system for executing a backed up virtual machine on a host computing device, based on pre-staging certain backed up data blocks to a media agent without fully restoring a backup copy of the virtual machine, the system comprising: the host computing device, which comprises at least one central processing unit and corresponding computer memory, and which is configured to, in response to a request for access to the virtual machine, execute the virtual machine based on a recovery point configured as the data source for the virtual machine;a secondary storage computing device, which comprises at least one central processing unit and corresponding computer memory, and which is in communication with the host computing device, wherein the secondary storage computing device comprises the media agent, a read-cache, and a shared file system that is configured as the recovery point for the virtual machine;a secondary storage device in communication with the secondary storage computing device, wherein the secondary storage device comprises a backup copy of data associated with the virtual machine, wherein the backup copy comprises at least one of a configuration file and a virtual disk;wherein the media agent is configured to: copy a first set of data blocks from the backup copy of data associated with the virtual machine to the read-cache, wherein the first set of data blocks is based on a profile of the virtual machine, and wherein the first set of data blocks is sufficient to respond to the request for access to the virtual machine,wherein a launch of execution of the virtual machine on the host computing device is based on the first set of data blocks served by the media agent via the recovery point; andwherein the media agent is further configured to, during execution of the virtual machine on the host computing device: serve a read request for a data block to the virtual machine by:(i) copying the requested data block from the backup copy to the read-cache if the requested data block is not found in the read-cache, and(ii) transmitting the requested data block from the read-cache, via the recovery point, in response to the read request, and (iii) without the entire backup copy of data associated with the virtual machine being restored to a primary storage device serving the host computing device;wherein continuing execution of the virtual machine on the host computing device is based on the media agent transmitting further data blocks copied from the backup copy without restoring the entire backup copy of the virtual machine. 7. The system of claim 6 wherein the media agent is further configured to identify the first set of data blocks to be copied from the backup copy to the read-cache, based on the profile of the virtual machine. 8. The system of claim 6 wherein the media agent is further configured to determine the first set of data blocks to be copied from the backup copy to the read-cache, based on the profile of the virtual machine, and wherein the profile of the virtual machine comprises at least one indication of a file associated with the virtual machine, as selected by a user in the request for access to the virtual machine provided via a file manager application, and wherein the backup copy also comprises a representation of the file selected by the user. 9. The system of claim 6 further comprising: a virtualization-client computing device, which comprises at least one central processing unit and corresponding computer memory, and which is in communication with the secondary storage computing device, wherein the virtualization-client computing device comprises a data agent; andwherein the media agent is further configured to: determine the first set of data blocks to be copied from the backup copy to the read-cache, based on the profile of the virtual machine as received from the data agent. 10. The system of claim 6 wherein the media agent is further configured to, after execution of the virtual machine has completed, de-associate the secondary storage device from the virtual machine.
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