Memory allocation for block rebuilding in a storage network
A method begins by identifying a plurality of encoded data slices requiring rebuilding. The method continues by determining an amount of memory required for rebuilding the plurality of encoded data slices and allocating memory in one or more storage units for the rebuilding the plurality of encoded data slices as reserve memory. The method continues by obtaining a plurality of rebuilt encoded data slices associated with the plurality of encoded data slices requiring rebuilding and storing the plurality of rebuilt encoded data slices in the reserve memory.
1. A method for execution by one or more processing modules of one or more computing devices of a storage network, the method comprises:
identifying a plurality of encoded data slices requiring rebuilding;
in response to the identifying, determining an amount of memory required for rebuilding the plurality of encoded data slices;
allocating memory in one or more storage units for the rebuilding the plurality of encoded data slices as reserve memory;
obtaining a plurality of rebuilt encoded data slices, wherein the plurality of rebuilt encoded data slices are associated with the plurality of encoded data slices requiring rebuilding; and
storing the plurality of rebuilt encoded data slices in the reserve memory.
2. The method of claim 1 , further comprising:
accessing memory utilization information to identify unallocated memory associated with the one or more storage units.
3. The method of claim 2 , wherein the information sufficient to identify unallocated memory includes an amount of memory used for stored encoded data slices, an amount of memory that is unused.
4. The method of claim 1 , wherein the amount of memory required for rebuilding the plurality of encoded data slices is more than an amount of memory required for storing the plurality of encoded data slices.
5. The method of claim 1 further comprising:
designating all utilized and reserve memory as utilized.
6. The method of claim 1 , wherein identifying the plurality of encoded data slices includes at least one of:
receiving a request to rebuild a portion of a virtual memory block;
detecting a missing encoded data slice;
detecting a corrupted encoded data slice; and
monitoring downloads to memory meeting minimum read/write (R/W) threshold numbers of encoded data slices but not including a full pillar width of encoded data slices.
7. The method of claim 1 , wherein identifying the plurality of encoded data slices further comprises querying vaults related to the plurality of encoded data slices to determine one or more missing or corrupted encoded data slices.
8. The method of claim 1 , further comprising:
modifying memory utilization information to include the plurality of rebuilt encoded data slices.
9. The method of claim 8 , further comprising sending modified memory utilization information to one or more of:
a storage unit of the storage network;
a managing unit of the storage network; and
a user device.
10. The method of claim 1 , further comprising obtaining the plurality of rebuilt encoded data slices by at least one of: receiving the rebuilt encoded data slices, generating the rebuilt encoded data slices and accessing one or more other computing devices of the storage network.
11. A computing device of a group of computing devices of a storage network, the computing device comprises:
an interface;
a local memory; and
a processing module operably coupled to the interface and the local memory, wherein the processing module is configured to:
identify a plurality of encoded data slices requiring rebuilding;
in response to an identification of a plurality of encoded data slices requiring rebuilding, determine an amount of memory required for rebuilding the plurality of encoded data slices;
allocate memory in one or more storage units for the rebuilding the plurality of encoded data slices as reserve memory;
obtain a plurality of rebuilt encoded data slices, wherein the plurality of rebuilt encoded data slices are associated with the plurality of encoded data slices requiring rebuilding; and
store the plurality of rebuilt encoded data slices in the reserve memory.
12. The computing device of claim 11 , wherein the processing module is further configured to:
access memory utilization information to identify unallocated memory associated with the one or more storage units.
13. The computing device of claim 12 , wherein the information sufficient to identify unallocated memory includes an amount of memory used for stored encoded data slices, an amount of memory that is unused.
14. The computing device of claim 11 , wherein the amount of memory required for rebuilding the plurality of encoded data slices is more than an amount of memory required for storing the plurality of encoded data slices.
15. The computing device of claim 11 , wherein the processing module is further configured to:
designate all utilized and reserve memory as utilized.
16. The computing device of claim 11 , wherein the plurality of encoded data slices are identified by at least one of:
receiving a request to rebuild a portion of a virtual memory block;
detecting a missing encoded data slice;
detecting a corrupted encoded data slice; and
monitoring downloads to memory meeting minimum read/write (R/W) threshold numbers of encoded data slices but not including a full pillar width of encoded data slices.
17. The computing device of claim 11 , wherein the plurality of encoded data slices are identified by querying vaults related to the plurality of encoded data slices to determine one or more missing or corrupted encoded data slices.
18. The computing device of claim 11 , wherein the processing module is further configured to:
modify memory utilization information to include the plurality of rebuilt encoded data slices.
19. The computing device of claim 11 , wherein the processing module is further configured to:
send updated memory utilization information to one or more of:
a storage unit of the storage network;
a managing unit of the storage network; and
a user device.
20. The computing device of claim 11 , wherein the processing module is further configured to:
obtain the plurality of rebuilt encoded data slices by at least one of: receiving the rebuilt encoded data slices, generating the rebuilt encoded data slices and accessing one or more other computing devices of the storage network.