Abstract: Disclosed aspects relate to operating system update management for a shared pool of configurable computing resources having a plurality of logical partitions (LPARs). An operating system update request may be received. A set of original shared portions and a set of original individualized portions may be classified with respect to a set of original files on a set of original nodes. A set of original overlay links may be created for the set of original files. A set of operating system network traffic may be routed using the set of original overlay links. A set of successor files may be established on a set of surrogate nodes. A set of successor overlay links may be created for the set of successor files. The set of operating system network traffic may be routed using the set of successor overlay links in place of the set of original overlay links.

Abstract: Disclosed aspects relate to upgrade management for a shared pool of configurable computing resources having a set of logical partition (LPAR) nodes which includes a set of established members. Performance of a live kernel update (LKU) operation may be initiated with respect to a first original LPAR node. Generation of a first surrogate LPAR node to succeed the first original LPAR node may be initiated. The first surrogate LPAR node may be identified as a new original LPAR node. The first surrogate LPAR node may be joined with the set of LPAR nodes. In response to the first surrogate LPAR node joining the set of LPAR nodes, the first surrogate LPAR node may be identified as a new surrogate LPAR node. The first surrogate LPAR node may be established as a first established member, thereby removing the first original LPAR node from the set of established members.

Abstract: Disclosed aspects relate to operating system update management for a shared pool of configurable computing resources having a plurality of logical partitions (LPARs). An operating system update request may be received. A set of original shared portions and a set of original individualized portions may be classified with respect to a set of original files on a set of original nodes. A set of original overlay links may be created for the set of original files. A set of operating system network traffic may be routed using the set of original overlay links. A set of successor files may be established on a set of surrogate nodes. A set of successor overlay links may be created for the set of successor files. The set of operating system network traffic may be routed using the set of successor overlay links in place of the set of original overlay links.

Abstract: Disclosed aspects relate to upgrade management for a shared pool of configurable computing resources having a set of logical partition (LPAR) nodes which includes a set of established members. Performance of a live kernel update (LKU) operation may be initiated with respect to a first original LPAR node. Generation of a first surrogate LPAR node to succeed the first original LPAR node may be initiated. The first surrogate LPAR node may be identified as a new original LPAR node. The first surrogate LPAR node may be joined with the set of LPAR nodes. In response to the first surrogate LPAR node joining the set of LPAR nodes, the first surrogate LPAR node may be identified as a new surrogate LPAR node. The first surrogate LPAR node may be established as a first established member, thereby removing the first original LPAR node from the set of established members.

Abstract: Operating system update management for a shared pool of configurable computing resources having a plurality of logical partitions (LPARs). An operating system update request may be received. A set of original shared portions and a set of original individualized portions may be classified with respect to a set of original files on a set of original nodes. A set of original overlay links may be created for the set of original files. A set of operating system network traffic may be routed using the set of original overlay links. A set of successor files may be established on a set of surrogate nodes. A set of successor overlay links may be created for the set of successor files. The set of operating system network traffic may be routed using the set of successor overlay links in place of the set of original overlay links.