US 11,755,435 B2
Cluster availability management
William Joseph Armstrong, Rochester, MN (US); Michael Howard Hartung, Tucson, AZ (US); Yu-Cheng Hsu, Tucson, AZ (US); and Glenn Rowan Wightwick, Sydney (AU)
Assigned to INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Jun. 18, 2019, as Appl. No. 16/445,084.
Application 16/445,084 is a continuation of application No. 13/072,307, filed on Mar. 25, 2011, granted, now 10,394,672.
Application 13/072,307 is a continuation of application No. 11/168,973, filed on Jun. 28, 2005, granted, now 7,937,616, issued on May 3, 2011.
Prior Publication US 2019/0303255 A1, Oct. 3, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 11/00 (2006.01); G06F 11/20 (2006.01)
CPC G06F 11/2046 (2013.01) [G06F 11/2033 (2013.01); G06F 11/2028 (2013.01)] 36 Claims
OG exemplary drawing
 
1. A method, comprising:
operating a first logical partition in a first physical processing complex of a server cluster in an active mode and a second logical partition in the same first physical processing complex in a standby mode, wherein the first physical processing complex includes partition resources transferrable within the first physical processing complex and reallocatable to one of the first and second logical partitions of the first physical processing complex by a hypervisor, which partition resources include at least one of processing and memory partition resources, wherein said standby mode operating has reduced transferrable partition resources allocated by the hypervisor for a logical partition operating in a standby mode as compared to said active mode operating for a logical partition operating in an active mode, wherein said active mode operating includes providing access to a shared resource for a logical partition operating in an active mode and wherein said standby mode operating includes denying access to said shared resource for a logical partition operating in a standby mode;
detecting a failure of a third logical partition in a second physical processing complex of the server cluster different from the first physical processing complex; and
in response to said failure detection, activating the standby logical partition in the first physical processing complex to operate in an active mode.