Abstract: A task may be executed using a domain specific language (DSL) debugger, the task including one or more modules. A module debugger associated with a module of the one or more modules of the task may be identified. Task debugging data associated with the execution of the task using the DSL debugger may be transmitted to the identified module debugger. Module debugging data may be received from the identified module debugger. Multi-level debugging data including the task debugging data and the received module debugging data may be generated.

Abstract: Deployment state based configuration generation is disclosed. For example, a first node is in a first deployment state, with a state daemon executing on the first node. A configuration generator may be associated with one or more processors. The state daemon records a first configuration instruction associated with a first modification to the first deployment state, where the first node is in a second deployment state after the first modification. The configuration generator generates a first configuration based on the second deployment state including the first configuration instruction. The first configuration is stored to a configuration repository, where the first configuration is deployed to a second node converting the second node to the second deployment state.

Abstract: A system includes a memory and a processor in communication with the memory. The processor builds a preliminary history list of a plurality of commits including intermediary commits and a target commit, instantiates a target file list of files modified by the target commit, and instantiates an intermediary file list for each intermediary commit. Additionally, the processor classifies each intermediary commit as an intersecting commit or an empty commit. Responsive to classifying a respective intermediary commit as an empty commit, the processor removes the respective intermediary commit from the preliminary history list to create a candidate history list. Responsive to classifying a respective intermediary commit as an intersecting commit, the processor retains the respective intermediary commit in the candidate history list. Additionally, the processor joins the respective intermediary file list with the target file list and creates a finalized history list.

Abstract: A method performed by a physical computing system includes, with a first virtual entity manager of a first host machine, detecting an Address Resolution Protocol (ARP) request from a first virtual entity supported by the first virtual entity manager to a second virtual entity having a first logical address within a fan network. The method further includes, with the first virtual entity manager, translating the first logical address to a second logical address and transmitting the ARP request to a second host machine using a physical address resolved from the second logical address, the second host machine supporting the second virtual entity. The method further includes receiving a response to the ARP request, the response including a virtualized physical address of the second virtual entity. The method further includes with the first virtual entity manager, forwarding a data packet from the first virtual entity to the virtualized physical address.

Abstract: According to one example, a method performed by a physical computing system includes, with a hypervisor, detecting that a guest system running on a virtual machine has executed a halt instruction for a virtual processor of the virtual machine. The method further includes, with a physical processor, switching from a context of the virtual machine to a context of the hypervisor. The method further includes re-entering the context of the virtual machine in response to determining that there are no tasks pending for processes outside the context of the virtual machine, the processes being for execution by the physical processor.

Abstract: Implementations of the disclosure describe manageable external wake of virtual machines. In one implementation, a method of the disclosure includes receiving, by a processor of a computer system, a message generated by a hardware device of the computer system while a virtual machine that is hosted by the computer system is asleep. The method further includes determining, by the processor, whether to wake the virtual machine in view of a hardware event of the hardware device that generated the message.

Abstract: A system and method for efficient virtual machine memory monitoring with hyper-threading includes executing, by a hypervisor executing on a plurality of physical processors, a virtual central processor unit (VCPU) of a virtual machine on a first hyper-thread. The plurality of physical processors include a first physical processor having the first hyper-thread and a second hyper-thread. The virtual machine executes on the first hyper-thread. Then, the second hyper-thread executes a memory monitoring instruction on a designated range of a shared memory to cause the second hyper-thread to stop executing. Then, a guest in the virtual machine updates the designated range of the shared memory by storing a first request in the designated range of the shared memory to wake up the second hyper-thread.

Abstract: An apparatus includes a storage device of a host computing device. The storage device is to store a virtualization manager. The apparatus also includes a processing device of the host computing device and operatively coupled to the storage device. The processing device is to determine that a first instance of a virtual machine on a first host computing device is paused based on an error associated with a connection to a storage device of the first host computing device, determine whether the second host computing device has access to the storage device of the first host computing device, instantiate a second instance of the virtual machine on the second host computing device when the second host computing device is determined to have access to the storage device of the first host computing device, and to stop the first instance of the virtual machine on the first host computing device.

Abstract: Aspects of the disclosure provide for mechanisms for securing virtual machines in a computer system. A method of the disclosure includes: receiving a first resource request initiated by an application running on a virtual machine during initialization of the application; allocating, by a hypervisor, a resource to the application in view of the first resource; and in response to receiving a message indicating completion of the initialization of the application, blocking, by the hypervisor, at least one hypercall initiated by the virtual machine. The completion of the initialization of the application may correspond to initiation of execution of the application using the allocated resource.

Abstract: Systems and methods for discovering and provisioning computing devices within a computing environment. An example method may comprise: loading a first kernel from a removable storage, wherein the first kernel identifies device information of the computing device when executed; transmitting a provisioning request comprising the device information to a provisioning device over a network; receiving provisioning data and a second kernel over a network, the second kernel comprising an operating system installer; and overwriting the first kernel with the second kernel.

Abstract: A mechanism for managing virtual machines in a virtualization system is disclosed. A method of implementation of the disclosure includes a virtual manager determining that there is a requirement to provide direct communicative coupling between a virtual machine executed by a first host system and one of a plurality of host systems. A second host system from the plurality of host systems is selected responsive to configuration information for the second host system at least partially matching configuration information for the first host system and a network entity associated with the second host system being free of network traffic for a threshold period of time. The virtualization manager provides direct communicative coupling between the second host system and the virtual machine via the network entity.

Abstract: Systems and methods for enhancing storage recollection in a shared storage system by enabling the recollection procedure to differentiate between open and abandoned transaction. An example method comprises: detecting, by a processing device, a transaction marker of a storage system, the transaction marker being stored on shared storage and indicating a modification of the shared storage is incomplete; determining, in view of a locking data structure on the shared storage, whether the transaction marker is associated with an abandoned modification; in response to the transaction marker being associated with an abandoned modification, releasing a portion of the shared storage associated with the abandoned modification; and destroying the transaction marker.

Abstract: A network switch may be debugged by creating a virtual instance of the switch. Configuration data of the network switch may be retrieved, the configuration data including lists of the rules and groups configured on the switch. An isolated virtual environment may be created, and a virtual switch may be provisioned on the isolated virtual environment. The virtual switch may be configured with the configuration data of the network switch, including the rules and groups configured thereon. Diagnostic data corresponding to the switch may be obtained from the virtual switch.

Abstract: A host system executing multiple virtual machines that is associated with multiple storage domains may be identified. Storage domain data may be received that includes utilization of each of the multiple storage domains by the multiple virtual machines. It may be determined that the utilization of a first storage domain of the multiple storage domains by the virtual machines satisfies a threshold utilization. In response to determining that the utilization of the first storage domain satisfies the threshold utilization, a second storage domain may be identified in view of a storage domain rank. An instruction may be provided to cause a storage migration of a virtual machine from the first storage domain to the identified second storage domain.

Abstract: Systems and methods for identifying memory devices for swapping virtual machine memory pages. An example method may comprise: identifying, by a processing device, a workload type associated with a workload being executed by a computer system; identifying a memory device associated with the workload type; evaluating a memory pressure metric reflecting a period of time during which an application being executed by the computer system has been blocked by a memory allocation operation; and responsive to determining that the memory pressure metric exceeds a threshold value, allocating a memory block on the identified memory device.

Abstract: A method of predicting a format of a file includes calculating a quotient vector storing a list of values in slots. Each slot of the quotient vector and binary vector correspond to a character of a set of distinct characters based on an order. Each value in the quotient vector indicates a frequency with which the corresponding distinct character is found relative to the set of distinct characters found in a file. The method also includes calculating, based on comparing each value in the quotient vector to a threshold, a binary vector storing a list of values in slots. The method further includes predicting, based on the binary vector, a format of the file.

Abstract: Systems and methods for implementing guest-initiated announcement of virtual machine migration. An example method may comprise: receiving, by an origin hypervisor running on an origin computer system, a migration announcement of a virtual machine; copying at least a part of a state of the virtual machine to a destination computer system; and responsive to stopping the virtual machine on the origin computer system, causing a destination hypervisor running on the destination computer system to broadcast the migration announcement over a network associated with the destination computer system.

Abstract: An apparatus includes a memory of a host computing device. The memory is to store at least one hypervisor. The apparatus also includes a processing device of the host computing device and operatively coupled to the memory. The processing device is to receive a request to connect the hypervisor to a virtual network, and to determine whether the hypervisor is connectable to the virtual network utilizing at least one connectivity check service. The at least one connectivity check service indicates whether one or more connectivity requirements are satisfied. The processing device is to further connect the hypervisor to the virtual network when the one or more connectivity requirements are indicated as being satisfied, and to perform a periodic connectivity check of the connection between the hypervisor and the virtual network.

Abstract: A system and method of translation bypass includes a hypervisor reserving a range of host virtual addresses. The hypervisor detects that a guest address is unmapped. The hypervisor determines a host virtual address. Determining the host virtual address includes adding the guest address to a host virtual address base offset. The host virtual address is within the range of host virtual addresses. The hypervisor maps the guest address to the host virtual address.

Abstract: Methods, systems, and computer program products are included for the intelligent garbage collection of containers. An example method includes providing a garbage collection data structure, the garbage collection data structure including metadata and one or more resource consumption parameters corresponding to the container. The one or more resource consumption parameters are analyzed by a machine-learning function. Based on the analyzing, the container is classified into one or more classes, the one or more classes including at least one of a suspicious container class, a malicious container class, or a normal container class. Based on the classifying, one or more garbage collection actions are performed on the container, including at least one of generating an alert corresponding to the container or reducing the resource consumption of the container.