Patent application number | Description | Published |
20120066182 | INODE MANAGEMENT IN REDIRECT-ON-WRITE FILE SYSTEM - Some embodiments of the inventive subject matter allow a redirect-on-write file system to continue processing file transactions while writing a snapshot to persistent storage. Thus, embodiments do not block file transactions while flushing snapshots to persistent storage. To avoid blocking, some embodiments the file system can maintain two snapshot generations. The first snapshot generation is the snapshot being written to persistent storage. The second snapshot generation may reside in main memory, and store data for file transactions occurring after the file system began writing the first snapshot generation. | 03-15-2012 |
20120066278 | DISTRIBUTED FILE HIERARCHY MANAGEMENT IN A CLUSTERED REDIRECT-ON-WRITE FILE SYSTEM - Management of a file hierarchy for a clustered file system can be distributed across nodes of the cluster. A cluster file hierarchy is accessed to determine location of a file in response to a request to write to a file. A first node maintains the cluster file hierarchy. It is determined that management of a fileset object, which represents a fileset that includes the file, has been delegated to a second node based, at least in part, on said accessing the cluster file hierarchy. A node file hierarchy maintained by the second node is accessed responsive to determining the delegation. The cluster file hierarchy represents filesets of the clustered file system and the node hierarchy represents a subset of one or more of the filesets. Location of the file is determined based, at least in part, on said accessing the node file hierarchy. | 03-15-2012 |
20120259818 | System And Method For Hierarchical Recovery Of A Cluster File System - Hierarchical recovery of failed computing nodes to operative computing nodes within a cluster of computing nodes is managed by initiating a recovery leader at an operative node that retrieves management information from the operative nodes and applies the management information to recover filesets of a meta-fileset in a hierarchical filesystem. The use of hierarchical filesets throughout the cluster provides more rapid failover by distributing recovery load across computing nodes and supporting recovery of nodes in parallel. | 10-11-2012 |
20130318086 | DISTRIBUTED FILE HIERARCHY MANAGEMENT IN A CLUSTERED REDIRECT-ON-WRITE FILE SYSTEM - Management of a file hierarchy for a clustered file system can be distributed across nodes of the cluster. A cluster file hierarchy is accessed to determine location of a file in response to a request to write to a file. A first node maintains the cluster file hierarchy. It is determined that management of a fileset object, which represents a fileset that includes the file, has been delegated to a second node based, at least in part, on said accessing the cluster file hierarchy. A node file hierarchy maintained by the second node is accessed responsive to determining the delegation. The cluster file hierarchy represents filesets of the clustered file system and the node hierarchy represents a subset of one or more of the filesets. Location of the file is determined based, at least in part, on said accessing the node file hierarchy. | 11-28-2013 |
20130332648 | MAINTAINING VERSIONS OF DATA IN SOLID STATE MEMORY - Various embodiments are directed to maintaining versions of data within a solid state memory. At least one request to write at least one dataset to a logical page of a solid state memory is received from a file system. At least one physical page in a data block of the solid state memory associated with the logical page is identified. A processor stores the dataset in the at least one physical page. At least one data versioning tag is associated with the at least one dataset in a data structure associated with the logical page. The data versioning tag identifies the at least one dataset as a given version of the logical page. The at least one dataset is maintained as accessible from the at least one physical page irrespective of subsequent write operations to the logical page in response to associating the at least one data versioning tag. | 12-12-2013 |
20130332649 | FILE SYSTEM FOR MAINTAINING DATA VERSIONS IN SOLID STATE MEMORY - One or more embodiments are directed to managing data in a solid state memory supporting data versioning. A file system reserves a plurality of logical pages from a solid state memory. Each logical page in the plurality of logical pages is associated with a plurality of physical pages in the solid state memory. Each logical page in the plurality of logical pages is assigned to one group in a plurality of groups. A request is sent to a flash translation layer for an operation to be performed by the flash translation layer on a group in the plurality of groups. | 12-12-2013 |
20130332650 | FLASH TRANSLATION LAYER SYSTEM FOR MAINTAINING DATA VERSIONS IN SOLID STATE MEMORY - One or more embodiments are directed to managing data in a solid state memory supporting data versioning. At least one request to perform an operation on at least one logical page of a solid state memory is received from a file system. A data structure associated with the at least one logical page is identified. The data structure at least identifies one or more physical pages associated with the at least one logical page, and a version of the at least one logical page represented by a dataset stored in each of the one or more physical pages. The operation is performed on the at least one logical page based on the data structure that has been identified. | 12-12-2013 |
20130332654 | DATA VERSIONING IN SOLID STATE MEMORY - One or more embodiments are directed a solid state storage device for maintaining versions of data. The solid state storage device comprises a processor and a solid state memory communicatively coupled to the processor. A flash translation layer is configured to perform a method comprising creating at least one data structure associated with at least one logical page of the solid state memory. The logical page is associated with at least one physical page in a data block of the solid state memory. A first set of information associated with the logical page is stored in the data structure. A second set of information associated with the physical page is stored in the data structure. The second set of information comprises at least versioning information identifying which version of the logical page is represented by a dataset stored within the physical page. | 12-12-2013 |
20130332655 | MAINTAINING VERSIONS OF DATA IN SOLID STATE MEMORY - One or more embodiments are directed a solid state storage device for maintaining versions of data. The solid state storage device comprises a processor and a solid state memory communicatively coupled to the processor. A flash translation layer receives at least one request from a file system to write at least one dataset to a logical page of the solid state memory. At least one physical page in a data block of the solid state memory associated with the logical page is identified. At least one dataset in the physical page is stored. At least one data versioning tag is associated with the dataset in a data structure associated with the logical page. The data versioning tag identifies the dataset as a given version of the logical page. The dataset is maintained as accessible from the physical page irrespective of subsequent write operations to the logical page. | 12-12-2013 |
20130332656 | FILE SYSTEM FOR MAINTAINING DATA VERSIONS IN SOLID STATE MEMORY - One or more embodiments are directed to managing data in a solid state memory supporting data versioning. A file system residing at an information processing system reserves a plurality of logical pages from a solid state memory. Each logical page in the plurality of logical pages is associated with a plurality of physical pages in the solid state memory. Each logical page in the plurality of logical pages is assigned to one group in a plurality of groups. A request is sent to a flash translation layer for an operation to be performed by the flash translation layer on a group in the plurality of groups. | 12-12-2013 |
20130332657 | FLASH TRANSLATION LAYER SYSTEM FOR MAINTAINING DATA VERSIONS IN SOLID STATE MEMORY - One or more embodiments are directed to maintaining versions of data within a solid state memory. At least one request to perform an operation on at least one logical page of a solid state memory is received from a file system. A data structure associated with the at least one logical page is identified. The data structure at least identifies one or more physical pages associated with the at least one logical page, and a version of the at least one logical page represented by a dataset stored in each of the one or more physical page. The operation is performed on the at least one logical page based on the data structure that has been identified. | 12-12-2013 |
20130332684 | DATA VERSIONING IN SOLID STATE MEMORY - Embodiments are directed to maintaining versions of data within a solid state memory. One or more embodiments create at least one data structure associated with at least one logical page of a solid state memory. The logical page is associated with at least one physical page in a data block of the solid state memory. A first set of information associated with the logical page is stored in the data structure. A second set of information associated with the physical page is stored in the data structure. The second set of information includes at least versioning information identifying which version of the logical page is represented by a dataset is stored within the physical page. | 12-12-2013 |
20140122776 | DYNAMIC TUNING OF INTERNAL PARAMETERS FOR SOLID-STATE DISK BASED ON WORKLOAD ACCESS PATTERNS - A system and method for tuning a solid state disk memory includes computing a metric representing a usage trend of a solid state disk memory. Whether one or more parameters need to be adjusted to provide a change in performance is determined. The parameter is adjusted in accordance with the metric to impact the performance of running workloads. These steps are repeated after an elapsed time interval. | 05-01-2014 |
20140122861 | DYNAMIC TUNING OF INTERNAL PARAMETERS FOR SOLID-STATE DISK BASED ON WORKLOAD ACCESS PATTERNS - A system and method for tuning a solid state disk memory includes computing a metric representing a usage trend of a solid state disk memory. Whether one or more parameters need to be adjusted to provide a change in performance is determined. The parameter is adjusted in accordance with the metric to impact the performance of running workloads. These steps are repeated after an elapsed time interval. | 05-01-2014 |