Facilitating write requests in a storage network
A processing system of a storage network operates by receiving a write request associated with a data object; identifying dispersed storage error encoding parameters; and determining a number of available storage units. When the number of available storage units is determined to exceed a first number, the processing system operates by: determining a first write threshold number in accordance with the dispersed storage error encoding parameters; dispersed error encoding the data object to produce a first write threshold number of encoded data slices; and writing, to available storage units, the first write threshold number of encoded data slices. When the number of available storage units is determined to not exceed the first number, the processing system operates by: determining a second write threshold number in accordance with the dispersed storage error encoding parameters associated, wherein the second write threshold number is less than the first write threshold number; dispersed error encoding the data object to produce a second write threshold number of encoded data slices; and writing, to the available storage units, the second write threshold number of encoded data slices.
1. A method for execution by a processing system of a storage network that includes a processor, the method comprises:
receiving, via the processing system, a write request associated with a data object;
identifying, via the processing system, dispersed storage error encoding parameters;
determining, via the processing system, a number of available storage units;
determining a write threshold number that is based on the number of available storage units by:
when the number of available storage units is determined to exceed a first number:
determining, via the processing system, the write threshold number to be equal to a first write threshold number in accordance with the dispersed storage error encoding parameters;
dispersed error encoding the data object to produce a first write threshold number of encoded data slices; and
writing, to available storage units, the first write threshold number of encoded data slices;
when the number of available storage units is determined to not exceed the first number:
determining, via the processing system, the write threshold number to be equal to a second write threshold number in accordance with the dispersed storage error encoding parameters associated, wherein the second write threshold number is less than the first write threshold number;
dispersed error encoding the data object to produce a second write threshold number of encoded data slices; and
writing, to the available storage units, the second write threshold number of encoded data slices.
2. The method of claim 1 , wherein identifying the dispersed storage error encoding parameters includes an information dispersal algorithm (IDA) width and a decode threshold number.
3. The method of claim 2 , wherein identifying the IDA width and the decode threshold number includes at least one of: interpreting a portion of a system registry information, receiving the IDA width and decode threshold number, determining the IDA width and the decode threshold number.
4. The method of claim 1 , wherein determining the number of available storage units includes initiating a query and interpreting a query response.
5. The method of claim 1 , wherein determining the number of available storage units includes at least one of: performing a test, interpreting an error message, performing a lookup, or generating an estimate.
6. The method of claim 1 , wherein the dispersed storage error encoding parameters includes a decode threshold number.
7. The method of claim 6 , wherein the first write threshold number is greater than the decode threshold number and less than the number of available storage units.
8. The method of claim 6 , wherein the first write threshold number is greater than the decode threshold number and equal to the number of available storage units.
9. The method of claim 6 , wherein the second write threshold number is equal to the decode threshold number and equal to the number of available storage units.
10. The method of claim 6 , wherein the second write threshold number is equal to the decode threshold number and less than the number of available storage units.
11. A processing system of a storage network comprises:
at least one processor;
a memory that stores operational instructions, that when executed by the at least one processor cause the processing system to perform operations including:
receiving a write request associated with a data object;
identifying dispersed storage error encoding parameters;
determining a number of available storage units;
determining a write threshold number that is based on the number of available storage units by:
when the number of available storage units is determined to exceed a first number:
determining the write threshold number to be equal to a first write threshold number in accordance with the dispersed storage error encoding parameters;
dispersed error encoding the data object to produce a first write threshold number of encoded data slices; and
writing, to available storage units, the first write threshold number of encoded data slices;
when the number of available storage units is determined to not exceed the first number:
determining the write threshold number to be equal to a second write threshold number in accordance with the dispersed storage error encoding parameters associated, wherein the second write threshold number is less than the first write threshold number;
dispersed error encoding the data object to produce a second write threshold number of encoded data slices; and
writing, to the available storage units, the second write threshold number of encoded data slices.
12. The processing system of claim 11 , wherein identifying the dispersed storage error encoding parameters includes an information dispersal algorithm (IDA) width and a decode threshold number.
13. The processing system of claim 12 , wherein identifying the IDA width and the decode threshold number includes at least one of: interpreting a portion of a system registry information, receiving the IDA width and decode threshold number, determining the IDA width and the decode threshold number.
14. The processing system of claim 11 , wherein determining the number of available storage units includes initiating a query and interpreting a query response.
15. The processing system of claim 11 , wherein determining the number of available storage units includes at least one of: performing a test, interpreting an error message, performing a lookup, or generating an estimate.
16. The processing system of claim 11 , wherein the dispersed storage error encoding parameters includes a decode threshold number.
17. The processing system of claim 16 , wherein the first write threshold number is greater than the decode threshold number and less than the number of available storage units.
18. The processing system of claim 16 , wherein the first write threshold number is greater than the decode threshold number and equal to the number of available storage units.
19. The processing system of claim 16 , wherein the second write threshold number is equal to the decode threshold number and equal to the number of available storage units.
20. The processing system of claim 16 , wherein the second write threshold number is equal to the decode threshold number and less than the number of available storage units.