Distributed storage network for modification of a data object
View Patent ↗A method includes converting, by a first computing device of a DSN, a user virtual memory address of a data object identified in a data access request into a DSN virtual memory address. The method further includes processing, by at least one of the first computing device and a second computing device of the DSN, the DSN virtual address to determine that a first storage units of the storage units stores first encoded data slices of each set of at least some of the plurality of sets of encoded data slices; and a second storage units of the storage units stores second encoded data slices of each set of the at least some of the plurality of sets of encoded data slices. The method further includes converting, by the first storage unit, DSN virtual addresses of the first encoded data slices into physical addresses within the first storage unit.
1. A method to access data in a dispersed storage network (DSN), the method comprises:
converting, by a first computing device of the DSN, a user virtual memory address of a data object identified in a data access request into a DSN virtual memory address, wherein the data is divided into a plurality of data segments, wherein the plurality of data segments is dispersed storage error encoded into a plurality of sets of encoded data slices that is stored in storage units of the DSN, wherein the converting further comprises identifying a vault associated with a user associated with the data access request, and wherein the vault is a logical storage space that spans the storage units, and wherein data objects are stored in the vault in accordance with operational parameters and, for each data object, includes data segment information and a read threshold value of a minimum number of slices required to reconstruct the data;
processing, by at least one of the first computing device and a second computing device of the DSN, the DSN virtual address to determine that:
a first storage unit of the storage units stores first encoded data slices of each set of at least some of the plurality of sets of encoded data slices; and
a second storage unit of the storage units stores second encoded data slices of each set of the at least some of the plurality of sets of encoded data slices; and
converting, by the first storage unit, DSN virtual addresses of the first encoded data slices into physical addresses within the first storage unit.
2. The method of claim 1 , wherein the processing the DSN virtual address comprises:
identifying a first pillar number associated with the first encoded data slices;
determining a first DSN memory identifier corresponding to the first pillar number; and
identifying the first storage unit based on the first DSN memory identifier.
3. The method of claim 1 further comprises:
when the data access request is a write request of the data object;
accessing vault information associated with a user associated with the data access request to determine operational parameters;
encoding the data object in accordance with the operational parameters to produce the plurality of sets of encoded data slices;
generating a plurality of sets of DSN addresses for the plurality of sets of encoded data slices; and
writing the plurality of sets of encoded data slices to the storage units in accordance with the plurality of sets of DSN addresses.
4. The method of claim 1 further comprises:
storing data object information regarding the data object, wherein the data object information includes one or more of: a data segment size, a data segment number, a segment revision level, a data object size, and a segmentation strategy indication.
5. The method of claim 4 further comprises:
dispersed storage error encoding the data object information to produce a set of encoded information slices; and
storing the set of encoded information slices in at least some of the storage units.
6. A non-transitory computer readable memory device comprises:
a first storage section for storing operational instructions that causes a first computing device of a dispersed storage network (DSN) to:
convert a user virtual memory address of a data object identified in a data access request into a DSN virtual memory address, wherein the data is divided into a plurality of data segments, wherein the plurality of data segments is dispersed storage error encoded into a plurality of sets of encoded data slices that is stored in storage units of the DSN, wherein the converting further comprises identifying a vault associated with a user associated with the data access request, and wherein the vault is a logical storage space that spans the storage units, and wherein data objects are stored in the vault in accordance with operational parameters and, for each data object, includes data segment information and a read threshold value of a minimum number of slices required to reconstruct the data;
a second storage section for storing operational instructions that causes at least one of the first computing device and a second computing device of the DSN to:
process the DSN virtual address to determine that:
a first storage unit of the storage units stores first encoded data slices of each set of at least some of the plurality of sets of encoded data slices; and
a second storage unit of the storage units stores second encoded data slices of each set of the at least some of the plurality of sets of encoded data slices; and
a third storage section for storing operational instructions that causes the first storage unit to:
convert DSN virtual addresses of the first encoded data slices into physical addresses within the first storage unit.
7. The non-transitory computer readable memory device of claim 6 , wherein the processing the DSN virtual address comprises:
identifying a first pillar number associated with the first encoded data slices;
determining a first DSN memory identifier corresponding to the first pillar number; and
identifying the first storage unit based on the first DSN memory identifier.
8. The non-transitory computer readable memory device of claim 6 further comprises:
when the data access request is a write request of the data object;
a fourth storage section for storing operational instructions that causes the at least one of the first computing device and the second computing device to:
access vault information associated with a user associated with the data access request to determine operational parameters;
encode the data object in accordance with the operational parameters to produce the plurality of sets of encoded data slices;
generate a plurality of sets of DSN addresses for the plurality of sets of encoded data slices; and
write the plurality of sets of encoded data slices to the storage units in accordance with the plurality of sets of DSN addresses.
9. The non-transitory computer readable memory device of claim 6 further comprises:
a fourth storage section for storing operational instructions that causes the at least one of the first computing device and the second computing device to:
store data object information regarding the data object, wherein the data object information includes one or more of: a data segment size, a data segment number, a segment revision level, a data object size, and a segmentation strategy indication.
10. The non-transitory computer readable memory device of claim 9 further comprises:
the fourth storage section for storing operational instructions that further cause the at least one of the first computing device and the second computing device to:
dispersed storage error encode the data object information to produce a set of encoded information slices; and
store the set of encoded information slices in at least some of the storage units.