Optimized index usage for data restore
Various systems and methods for restoring data using indexes. For example, one method involves receiving a request that includes a restore criterion. The method involves identifying a storage object in a backup storage device that meets the restore criterion, in response to the request. Detecting the identity of the storage object involves sending a query with the restore criterion to a client computing device that includes an index. The method also involves responding to the request with information identifying the storage object.
1. A method, performed by a plurality of client computing devices, wherein each client computing device performs the steps of:
receiving a copy of a request, wherein
each client computing device comprises a plurality of storage objects and an index associated with the plurality of storage objects,
the copy of the request is received from a backup storage device,
the copy of the request comprises one or more key words,
each of the key words corresponds to a portion of content that is potentially included in at least one storage object among the plurality of storage objects stored on each client computing device, and
the client computing device comprises a processor and a memory coupled to the processor, wherein
the memory is configured to store the plurality of storage objects and the index;
detecting an identity of one or more storage objects in the plurality of storage objects that are responsive to the request (“responsive storage objects”), wherein
each of the responsive storage objects comprises at least one of the one or more key words;
generating a reply, wherein
the reply comprises information indicating the identity of each of the responsive storage objects; and
transmitting the reply to the backup storage device, wherein
the information is configured to enable the backup storage device to identify whether a backup copy of each of the responsive storage objects is stored in the backup storage device.
2. The method of claim 1 , wherein
the portion of content is stored in the memory of at least one of the client computing devices that perform the method of claim 1 .
3. The method of claim 1 , wherein
the index comprises a subject index.
4. The method of claim 1 , wherein
at least one of the client computing devices satisfies a search parameter.
5. The method of claim 1 , wherein
the reply comprises metadata related to each of the responsive storage objects, and
the metadata indicates when a backup copy of each of the responsive storage objects was created.
6. The method of claim 1 , further comprising:
each client computing device sending a participation message indicating that each respective client computing device comprises an index module.
7. A non-transitory computer readable medium comprising instructions executable by one or more processors on a plurality of client computing devices, wherein the instructions are configured to cause each client computing device to performs the steps of:
receive a copy of a request, wherein
each client computing device comprises a plurality of storage objects and an index associated with the plurality of storage objects,
the copy of the request is received from a backup storage device,
the copy of the request comprises one or more key words,
each of the key words corresponds to a portion of content that is potentially included in at least one storage object among the plurality of storage objects stored on each client computing device, and
each client computing device comprises a processor and a memory coupled to the processor, wherein
the memory is configured to store the plurality of storage objects and the index;
detect an identity of one or more storage objects in the plurality of storage objects that are responsive to the request (“responsive storage objects”), wherein
each of the responsive storage objects comprises at least one of the one or more key words;
generate a reply, wherein
the reply comprises information indicating the identity of each of the one responsive storage objects; and
transmit the reply to the backup storage device, wherein
the information is configured to enable the backup storage device to identify whether a backup copy of each of the responsive storage objects is stored in the backup storage device.
8. The non-transitory computer readable medium of claim 7 , wherein
the portion of content is stored in the memory of at least one of the client computing devices that perform the steps of claim 7 .
9. The non-transitory computer readable medium of claim 7 , wherein
at least one of the client computing devices satisfies a search parameter.
10. The non-transitory computer readable medium of claim 7 , wherein
the reply comprises metadata related to each of the responsive storage objects, and
the metadata indicates when a backup copy of each of the responsive storage objects was created.
11. The non-transitory computer readable medium of claim 7 , wherein the instructions are further executable to:
send a participation message indicating that the respective client computing device comprises a index module.
12. A system comprising a plurality of client computing devices, wherein and each client computing device is configured to:
receive a copy of a request, wherein
each client computing device comprises a plurality of storage objects and an index associated with the plurality of storage objects,
the copy of the request is received from a backup storage device,
the copy of the request comprises one or more key words,
each of the key words corresponds to a portion of content that is potentially included in at least one storage object among the plurality of storage objects stored on each client computing device, and
each client computing device comprises a processor and a memory coupled to the processor, wherein
the memory is configured to store the plurality of storage objects and the index;
detect an identity of one or more storage objects in the plurality of storage objects that are responsive to the request (“responsive storage objects”), wherein
each of the responsive storage objects comprises at least one of the one or more key words;
generate a reply, wherein
the reply comprises information indicating the identity of each of the responsive storage objects; and
transmit the reply to the backup storage device, wherein
the information is configured to enable the backup storage device to identify whether a backup copy of each of the responsive storage objects is stored in the backup storage device.
13. The system of claim 12 , wherein
the portion of content is stored in the memory of at least one of the client computing devices.
14. The system of claim 12 , wherein
at least one of the client computing devices satisfies a search parameter.
15. The system of claim 12 , wherein
the reply comprises metadata related to each of the responsive storage objects, and
the metadata indicates when a backup copy of each of the responsive storage objects was created.
16. The system of claim 12 , wherein the each of the client computing devices is further configured to:
send a participation message indicating that each respective client computing device comprises an index module.