Red Hat Israel, Ltd.

Red Hat, Inc.

Omer Frenkel

Vitaly Elyashev

Maor Lipchuk

Livnat Peer

Mike Kolesnik

Yair Zaslavsky

Miki Kenneth

Michael Stavros Bonnet

A computer system generates snapshot backups of a virtual machine by creating a metadata snapshot and a backup snapshot. The computer system identifies a backup request for a virtual machine operating on a host computing system, initiates a backup snapshot of storage devices in use by the virtual machine, generates a metadata snapshot of a configuration of the virtual machine, and maintains the metadata snapshot in a data store.

Virtual machine backup using snapshots and current configuration

Clients access compute resources in a data center organized in logical clusters. A cluster level quota governs access to the compute resources, regardless of the location of the resources which can be part of multiple computers or part of multiple data centers. The cluster level quota can manage allocation and usage of storage, memory, and CPU resources in multi-tenant data center environments. A user requests a computing resource from a logical compute cluster in a data center of host machines hosting virtual machines. According to permissions associated with the user for the logical compute cluster and a cluster quota, the system grants access to the computing resource to the user in response to the request when the cluster quota permits an expected use of the computing resource according to the request.

Virtual resource allocation and resource and consumption management

Some embodiments of using snapshotting and virtualization to perform tasks in a known and reproducible environment have been presented. A computing device generates a temporary snapshot of a state of a virtual machine. A session of the virtual machine is started on the computing device using the temporary snapshot. The temporary snapshot is automatically destroyed when the session is terminated, wherein any changes made to the state during the session are removed by destroying the temporary snapshot.

Stateless virtual machine

The subject matter of this specification can be implemented in, among other things, a computer-implemented method including sending, from a virtual desktop server manager at a data center and over a network, at least one request to a virtual machine storage domain for virtual machine installation images. The virtual machine storage domain stores the virtual machine installation images separate from the data center. The method further includes receiving, from the virtual machine storage domain over the network, the virtual machine installation images. The method further includes caching the virtual machine installation images in a data storage domain within the data center. The method further includes receiving a request to present a list of the virtual machine installation images. The method further includes in response to receiving the request to present the list, presenting the list of the cached virtual machine installation images.

Virtual machine installation image caching

A computer system generates a clone of a virtual machine from a point-in-time snapshot backup by collapsing metadata snapshots and storage snapshots into a virtual machine image. The computer system identifies a clone request for a virtual machine, the clone request comprising a point-in-time reference, retrieves at least one metadata snapshot and at least one storage snapshot based on the point-in-time reference, combines the at least one metadata snapshot and the at least one storage snapshot into a virtual machine image, and provisions a new virtual machine based on the virtual machine image.

Creating a virtual machine from a snapshot

A host controller or a host detects that a client has disconnected from a virtual machine running on the host. The host controller or host initiates a timer upon detecting that the client has disconnected. When the timer times out, the host controller or host saves the state of the virtual machine. The host controller or host causes the virtual machine to be shut down upon saving the state.

Auto suspense of virtual machine on client disconnection

A host controller is coupled to host computers that host virtual machines. At least one of the virtual machines is a highly available virtual machine. The host controller detects a change in system resources and identifies a highly available virtual machine that failed before the change occurs. The host controller re-runs the highly available virtual machine upon detection of the change of the system resources.

Monitoring of highly available virtual machines

A computing device monitors multiple hosts. A first host that does not have access to a data store is identified. A determination is made as to whether other hosts have access to the data store. When the other hosts do have access to the data store, it is determined that the first host is malfunctioning. A host error notification may then be sent to an administrator.

Virtual machine infrastructure with storage domain monitoring

A host controller migrates live virtual machines from one host to another host to balance the load in the host cluster. In one embodiment, the host controller identifies an overloaded host from the host cluster. The host controller selects a virtual machine from the existing virtual machines that run on the overloaded host based on a percentage value associated with the virtual machine. The percentage value represents CPU usage incurred by the virtual machine on the host. In one embodiment, the selected virtual machine is one that incurs the least amount of load on the host. The host controller then selects a target host from the host cluster as a destination for migrating the selected virtual machine.

Growing community of inventors

Tel Aviv, Israel

Omer Frenkel