Abstract: Methods, computing systems and computer program products implement embodiments of the present invention that include collecting, from a software-defined storage system including one or more computing nodes that are configured to provide a storage service, performance metrics for each of the computing nodes, and detecting, based on the performance metrics, a performance bottleneck in the software-defined storage system. In embodiments of the present invention, each of the computing nodes includes one or more software modules and one or more hardware components, and the performance bottleneck is either a given software module or a given hardware component. In some embodiments, detecting the performance bottleneck includes predicting the performance bottleneck. Upon detecting the performance bottleneck, a solution for the performance bottleneck can be determined, and the performance bottleneck and the solution can be presented to a user on a display.

Abstract: Methods, computing systems and computer program products implement embodiments of the present invention that include initializing multiple computing nodes to execute one or more software applications that provide a computing service, each of the computing nodes having a respective set of configuration data. Examples of the services include storage services, computational services and web service. Subsequent to deploying the multiple computing nodes as a software defined computing (SDC) cluster, an additional computing node is initialized using a given set of configuration data, and the additional computing node is added to the SDC cluster. In some embodiments, the additional node can be initialized and added to the SDC cluster in response to detecting a condition in the SDC cluster. In alternative embodiments, the additional node can be initialized and added to the SDC cluster in response to receiving a request to add an additional service to the SDC cluster.

Abstract: Methods, computing systems and computer program products implement embodiments of the present invention that include initializing, by a processor executing a file system in communication with a block manager managing multiple storage regions on a storage device, a file system write cache to have a default cache size, the default cache size corresponding to a first storage capacity of a default number of the storage regions. Upon detecting that a current number of the storage regions that are not in use by the block manager is less than the default number, the file system write cache is resized to a reduced cache size that corresponds to a second storage capacity of the current number of the storage regions. While the file system write cache has the reduced cache size, the file system write cache can be resized back to the default cache size as unused storage regions become available.

Abstract: Methods, computing systems and computer program products implement embodiments of the present invention that include initializing, by a processor executing a file system in communication with a block manager managing multiple storage regions on a storage device, a file system write cache to have a default cache size, the default cache size corresponding to a first storage capacity of a default number of the storage regions. Upon detecting that a current number of the storage regions that are not in use by the block manager is less than the default number, the file system write cache is resized to a reduced cache size that corresponds to a second storage capacity of the current number of the storage regions. While the file system write cache has the reduced cache size, the file system write cache can be resized back to the default cache size as unused storage regions become available.

Abstract: Methods, computing systems and computer program products implement embodiments of the present invention that include defining multiple group names, and identifying multiple system objects in a computer system such as a storage system. Examples of system objects include physical objects such as storage devices, network objects such as IP addresses, and logical objects such as logical volumes. Each of the system devices is tagged with a given group name, and upon receiving a query including a condition and an operation, one or more of the system devices matching the condition are identified, and the operation is performed on the one or more identified system objects. In some embodiments, the operation may include retrieving a parameter associated with the one or more identified system objects, and presenting a result of the query. In alternative embodiments, the operation may include updating a parameter associated with the one or more identified system objects.

Abstract: A method and a utility to assist configuration of high complexity hierarchically and deeply channelized telecommunication systems using a network language configuration application program interface. The invented method and utility removes major complexity from the process of configuring such devices and systems by accepting a minimal high level description of the required configuration, including an input language used for defining rules and requirements.