A manager file system (MFS), implemented using an OS process, exposes a path in the native file system as the root of its file system (e.g., mount point). The MFS informs the OS kernel that any file system operation whose path contains the mount point as its prefix, should be handed over to the process by invoking an appropriate interface method that the process implements as part of its file system implementation. The MFS manages one or more applications and leverages the authentication mechanism of the OS to provide fined-grained access control of MFS managed applications.

An embodiment may involve persistent storage including a parent filesystem and a pre-configured amount of free space within the parent filesystem that is dedicated for shared use. The embodiment may also involve one or more processors configured to, for each of a plurality of child filesystems: create a sparse file with an apparent size equivalent to the pre-configured amount of free space; create a virtual mapped device associated with the sparse file; establish one or more cryptographic keys for the virtual mapped device; create an encrypted virtual filesystem for the virtual mapped device and within the sparse file, wherein the encrypted virtual filesystem uses the cryptographic keys for application-transparent encryption and decryption of data stored by way of the encrypted virtual filesystem; and mount the encrypted virtual filesystem within the parent filesystem as one of the child filesystems.

A computer-implemented method according to one embodiment includes receiving a request to create a container; retrieving a manifest for a container image of the container; and mounting a file system for the container, utilizing the manifest.

A method, system, and computer program product are provided for virtualizing specific values in a guest configuration based on the underlying host symbol substitution values. A symbolic link located in a traditional file system in a virtual guest is opened. Each symbol is extracted from a symbol-based file located in a symbol-based file system. The symbol-based file is accessed through a symbolic link from the traditional file system. The virtual guest issues a privileged instruction to a hypervisor for each symbol in the symbol-based file to retrieve a substitution value from a symbol table that is stored in hypervisor storage. The substitution value for each symbol is returned to the virtual guest, and it replaces the symbol in the symbol-based file. In response to a file read request for the traditional file, the substitution value is retrieved from the symbol-based file using the symbolic link from the traditional file.

A storage controller is implemented for controlling a storage system. The storage controller may be implemented using a distributed computer system and may include components for servicing client data requests based on the characteristics of the distributed computer system, the client, or the data requests. The storage controller is scalable independently of the storage system it controls. All components of the storage controller, as well as the client, may be virtual or hardware-based instances of a distributed computer system.

A content management system interface at a local computer device configured to receive user file commands from a file manager and translate the user file commands into content management commands for sending to the remote content management system via a network interface. The content management system interface is further configured to receive remote file information from the remote content management system via the network interface and translate the remote file information into user file information for the file manager.

A computing system that includes one or more server computing devices including one or more processors configured to execute instructions for a domain extensibility module that provides software development tools for building domain extensions for a database platform, and a data ingestion module that provides software development tools for defining a metadata schema for extracting metadata from data files. The one or more processors are configured to receive a set of data from a user computing device, define a target metadata schema that includes one or more metadata fields that will be populated during a data ingestion process, define a target domain extension that defines one or more data types for storing the received set of data after performing the data ingestion process, and ingest the received set of data using a metadata extraction pipeline to generate metadata files based on the target metadata schema.

An illustrative pseudo-file-system driver uses deduplication functionality and resources in a storage management system to provide an application and/or a virtual machine with access to a locally-stored file system. From the perspective of the application/virtual machine, the file system appears to be of virtually unlimited capacity. The pseudo-file-system driver instantiates the file system in primary storage, e.g., configured on a local disk. The application/virtual machine requires no configured settings or limits for the file system's storage capacity and may thus treat the file system as “infinite.” The pseudo-file-system driver intercepts write requests and may use the deduplication infrastructure in the storage management system to offload excess data from local primary storage to deduplicated secondary storage, based on a deduplication database. The pseudo-file-system driver also intercepts read requests and in response may restore data from deduplicated secondary storage to primary storage, also based on the deduplication database.

Systems, methods and computer program products for high-performance, low latency start-up of large shared media files. A method for low latency startup with low defect playback commences upon identifying a first media file having a first format to be converted to a second media file having a second format. A scheduler divides the first media file into multiple partitions separated by partition boundaries. The method continues by converting the partitions into respective converted partitions that comport with the second format. Determinations as to the position of the partition boundaries is made based on measurable conditions present at a particular moment in time. Different formats receive different treatment based on the combination of characteristics of the first format, characteristics of the second format, as well as on characteristics of measurable conditions present at the moment in time just before conversion of a segment.

The techniques disclosed herein enable systems to centralize access to various digital items irrespective of the location of those digital items. To achieve this, items that are stored at their original location, e.g., within a cloud storage platform, can be selected by a user for storage at a centralized location such as a favorites section. These items are selected using an interface control which can be an operating system component of an item keeping system that is accessible in any context or application. The item keeping system can generate an item alias for selected items which is then stored in the centralized location. In addition, item aliases can be moved to various destinations by the user to enable customized item storage for items of varying types, origin, and location. In addition, functionality of the interface control can be modified to suite selected items.