In one aspect of tape repositioning management in accordance with the present description, in response to loading a tape in a tape drive, mounting the tape linear tape file system (LTFS) is initiated including reading an index partition on the tape to extract metadata for mounting the tape LTFS, and prior to accessing a data area of the tape in response to any application access request, the tape is repositioned within a data partition to read a vHRTD (virtual High Resolution Tape Directory) recorded in an EOD (End of Data) portion such as an EOD data set, for example, of the data partition. The EOD portion is read to retrieve the vHRTD to facilitate application requested accesses to the tape. In one embodiment, repositioning and stopping the tape at the beginning of the data partition after reading the index partition containing metadata is bypassed.

In one aspect of tape repositioning management in accordance with the present description, in response to loading a tape in a tape drive, mounting the tape linear tape file system (LTFS) is initiated including reading an index partition on the tape to extract metadata for mounting the tape LTFS, and prior to accessing a data area of the tape in response to any application access request, the tape is repositioned within a data partition to read a vHRTD (virtual High Resolution Tape Directory) recorded in an EOD (End of Data) portion such as an EOD data set, for example, of the data partition. The EOD portion is read to retrieve the vHRTD to facilitate application requested accesses to the tape. In one embodiment, repositioning and stopping the tape at the beginning of the data partition after reading the index partition containing metadata is bypassed.

A method for execution by one or more computing devices of a storage network includes obtaining performance impact information regarding a data reconstruction operation associated with a computing device of the one or more computing devices, where the data reconstruction operation is regarding reconstructing data at a first reconstruction rate of a plurality of reconstruction rates, and where the performance impact information includes performance metrics of the storage network affected by the data reconstruction operation. The method further includes determining a second reconstruction rate of the plurality of reconstruction rates to utilize for the data reconstruction operation based on the performance impact information to achieve a first performance metric of the performance metrics. The method further includes executing the data reconstruction operation in accordance with the second reconstruction rate.

A method for execution by one or more computing devices of a storage network includes obtaining performance impact information regarding a data reconstruction operation associated with a computing device of the one or more computing devices, where the data reconstruction operation is regarding reconstructing data at a first reconstruction rate of a plurality of reconstruction rates, and where the performance impact information includes performance metrics of the storage network affected by the data reconstruction operation. The method further includes determining a second reconstruction rate of the plurality of reconstruction rates to utilize for the data reconstruction operation based on the performance impact information to achieve a first performance metric of the performance metrics. The method further includes executing the data reconstruction operation in accordance with the second reconstruction rate.

A storage object is migrated between nodes by a source node automatically verifying that another node is configured to service the storage object and changing ownership of the storage object based on the verifying. A cluster manager for the clustered storage system receives a request and provides the request to the source which owns the storage object. The source verifies that the destination is configured according to a predetermined configuration for servicing the storage object. Based on the verifying, the source offlines the storage object and updates ownership information of the storage object, thereafter allowing the destination to online the storage object. The cluster manager further provides the updated ownership information to all the nodes in the cluster, so an access request intended for the storage object may be received by any node and forwarded to the destination using the updated ownership information to effect a transparent migration.

The present disclosure relates to a communication technique for fusing a 5G communication system for supporting a high data transmission rate after a 4G system with the IoT technology, and a system thereof. The present disclosure can be applied to an intelligent service (e.g., a smart home, a smart building, a smart city, a smart car or connected car, healthcare, digital education, retail business, security and safety related service, etc.) based on the 5G communication technology and the IoT related technology. In accordance with an embodiment of the present disclosure, a method for detecting a malicious code which is injected into the command stream of a widget miming on a web-based OS in a device by a web server in a wireless communication system is provided. The method includes: analyzing the widget in the web server; determining at least one invariant condition constantly maintained and conserved while the widget is running, on the basis of a result of the analyzing; generating a metadata file including data satisfying the at least one invariant condition; associating the metadata file with the widget and providing the widget in a state in which the associated metadata file is included in the widget.

There is provided a file processing apparatus. An identification unit identifies, among a plurality of files stored in a first storage region, two or more files that have different extensions from one another as a file group based on a commonality among predetermined portions of file names. A decision unit decides on new file names of respective files in the file group so that the commonality among the predetermined portions is maintained in the file group. A transfer unit transfers, to a second storage region different from the first storage region, the respective files in the file group as files with the new file names that have been decided on.

A server (or server instance) may receive data during a plurality of sequential blocks of time. The server may store the data received in each block of time in a corresponding separate directory within a data store. The server may determine that a threshold storage capacity of the data store has been reached and, in response to the determining, may clear a directory in which oldest data received in an earliest block of time has been stored.

Systems and methods for checking for region consistency and table integrity problems and automatically repairing a corrupted HBase cluster. The methods and systems operate in a diagnostic mode and a diagnostic and repair mode. The methods include fixing table integrity problems, such as backwards table regions, table region holes, table region overlap, and the like to restore table integrity invariant. Once the table integrity has been restored, each row key resolves to exactly one region. The methods further include fixing region inconsistencies, such as bad region assignment, no region present in the meta table, region information not in the Hadoop Distributed File System (HDFS), and the like to restore region consistency invariant. The information in the HDFS is taken as ground truth and any meta table or assignment problems that are inconsistent with the HDFS is deemed wrong and removed.

In one embodiment, a method includes writing a file into a data partition of a tape medium, writing a pointer of the written file in an index partition and creating a high resolution tape directory (HRTD) including detailed location information of data in a data partition. The method also includes storing the HRTD as part of end of data (EOD) of the index partition in response to a tape cartridge housing the tape medium being unloaded. The storing the HRTD as part of the EOD of the index partition includes requesting movement of the tape medium to the index partition in order to update an index file after changes have occurred to data in the data partition, writing an updated index file into the index partition concurrent to writing an updated HRTD into the EOD of the index partition, and requesting for the tape cartridge to be unloaded.