Vmware, Inc.

Thorbjoern Donbaek Jensen

Erik C Cota-Robles

Kanika Nema

Indranil Bhattacharya

Ashutosh Saraswat

The disclosure provides a method for virtual volume snapshot creation by a storage array. The method generally includes receiving a request to generate a snapshot of a virtual volume associated with a virtual machine, in response to receiving the request, preparing a file system of the storage array to generate the snapshot, wherein preparing the file system comprises creating a delta storage structure to receive write input/output (I/O) requests directed for the virtual volume when generating the snapshot of the virtual volume, deactivating the virtual volume, activating the delta storage structure, generating the snapshot of the virtual volume, and during the generation of the snapshot of the virtual volume: receiving a write I/O directed for the virtual volume and committing the write I/O in the delta storage structure.

Stun free snapshots in virtual volume datastores using delta storage structure

A task list can list tasks to be performed on a target host machine. Certain tasks in the task list can be revised to produce a revised task list. Tasks directed to storage devices can be revised depending on whether or not the storage devices are shared by both the target host machine and a reference host machine.

Maintaining storage profile consistency in a cluster having local and shared storage

A per device state is introduced that indicates whether a storage device is shared clusterwide or not. The state may be populated by default based on detected device locality. Devices detected as local and those shared by only a subset of host machines in a cluster of machines may have the state set to 'FALSE.' Devices which are shared by all the machines in a cluster may have the state set to 'TRUE.' Locality of storage devices in a cluster may be modified using such state information. Operations upon other storage device state may be modified depending upon device sharing state.

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Hoejbjerg, Denmark

Thorbjoern Donbaek Jensen