Live operating system update mechanisms

摘要

Mechanisms are provided for performing a live update of an operating system. The mechanisms receive an update to an operating system and clone a root volume group associated with an operating system instance executing in a first logical partition of the data processing system to generate a cloned root volume group. The mechanisms apply the update to the cloned root volume group to generate an updated and cloned root volume group and boot a second logical partition of the data processing system using the updated and cloned root volume group. Moreover, the mechanisms mirror the original root volume group associated with an operating system instance executing in a first logical partition and import the mirrored root volume group into the second logical partition. The mechanisms migrate application instances to the second logical partition by restarting the application instances in the second logical partition using the mirrored root volume group.

主权项

1. A method, in a data processing system comprising a processor and a memory, for performing a live update of an operating system, the method comprising:
receiving an update to an operating system; cloning an original root volume group associated with an operating system instance executing in a first logical partition of the data processing system to generate a cloned root volume group for booting a second logical partition of the data processing system; mirroring the original root volume group associated with the operating system instance executing in the first logical partition of the data processing system to generate a mirrored root volume group in the first logical partition, wherein modifications to the original root volume group are mirrored to the mirrored root volume group; applying the update to the cloned root volume group to generate an updated and cloned root volume group; booting the second logical partition of the data processing system using the updated and cloned root volume group without shutting down and restarting the data processing system; importing the mirrored root volume group into the booted second logical partition; and migrating application instances to the booted second logical partition by restarting the application instances in the booted second logical partition using the mirrored root volume group.