Mirrored disaggregated memory in a clustered environment

A system comprising:

• a memory comprising computer readable instructions;
• and
• a processing device for executing the computer readable instructions, the computer readable instructions controlling the processing device to perform operations for mirroring memory in a disaggregated memory clustered environment, the operations comprising:
• assigning, by a hypervisor, a disaggregated memory to a virtual machine comprising a remote disaggregated memory, the virtual machine being one node of a cluster of the disaggregated memory clustered environment;
• allocating, by a disaggregated memory manager, a mirrored memory for the remote disaggregated memory to mirror the remote disaggregated memory on an alternate node of the cluster of the disaggregated memory clustered environment;
• responsive to a memory access occurring, maintaining, by the disaggregated memory manager, the mirrored memory;
• responsive to detecting a memory allocation adjustment, modifying, by the disaggregated memory manager, memory usage across the cluster;
• and
• responsive to detecting a failure resulting in loss of access to the remote disaggregated memory, implementing a corrective action.

A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to perform operations for mirroring memory in a disaggregated memory clustered environment, the operations comprising:

• assigning, by a hypervisor, a disaggregated memory to a virtual machine comprising a remote disaggregated memory, the virtual machine being one node of a cluster of the disaggregated memory clustered environment;
• allocating, by a disaggregated memory manager, a mirrored memory for the remote disaggregated memory to mirror the remote disaggregated memory on an alternate node of the cluster of the disaggregated memory clustered environment;
• responsive to a memory access occurring, maintaining, by the disaggregated memory manager, the mirrored memory;
• responsive to detecting a memory allocation adjustment, modifying, by the disaggregated memory manager, memory usage across the cluster;
• and
• responsive to detecting a failure resulting in loss of access to the remote disaggregated memory, implementing a corrective action.

A computer-implemented method for mirroring memory in a disaggregated memory clustered environment, the computer-implemented method comprising:

• assigning, by a hypervisor, a disaggregated memory to a virtual machine of a cluster;
• allocating, by a disaggregated memory manager, a mirrored memory for remote disaggregated memory allocations;
• maintaining, by the disaggregated memory manager, the mirrored memory as memory accesses occur;
• responsive to memory allocation adjustments, adjusting, by the disaggregated memory manager, the allocations to maintain mirroring;
• responsive to changes to the cluster, determining, by the disaggregated memory manager, whether allocation changes are to be made for improved performance and resiliency and adjusting the allocations accordingly;
• determining that a failure occurs in a primary node of the disaggregated memory;
• and
• responsive to determining that the failure occurred in the primary node, switching to using a secondary node as a primary memory source and re-establishing an alternate secondary node for the mirrored memory.

A system comprising:

• a memory comprising computer readable instructions;
• and
• a processing device for executing the computer readable instructions, the computer readable instructions controlling the processing device to perform operations for mirroring memory in a disaggregated memory clustered environment, the operations comprising:
• assigning, by a hypervisor, a disaggregated memory to a virtual machine of a cluster;
• allocating, by a disaggregated memory manager, a mirrored memory for remote disaggregated memory allocations;
• maintaining, by the disaggregated memory manager, the mirrored memory as memory accesses occur;
• responsive to memory allocation adjustments, adjusting, by the disaggregated memory manager, the allocations to maintain mirroring;
• responsive to changes to the cluster, determining, by the disaggregated memory manager, whether allocation changes are to be made for improved performance and resiliency and adjusting the allocations accordingly;
• determining that a failure occurs in a primary node of the disaggregated memory;
• and
• responsive to determining that the failure occurred in the primary node, switching to using a secondary node as a primary memory source and re-establishing an alternate secondary node for the mirrored memory.