Restore in cascaded copy environment

摘要

In one aspect of the present description, handling multiple backup processes comprises detecting that a defined storage volume is present in a first cascade of storage volumes; detecting that the defined storage volume is present in a second cascade of storage volumes; receiving a data write for a last storage volume in the first cascade of storage volumes; and performing a cleaning data write on the defined storage volume in the second cascade of storage volumes, wherein the cleaning data write corresponds to the received data write. Other aspects may be utilized, depending upon the particular application.

主权项

1. A computer program product for managing multiple backup processes, the computer program product comprising a non-transitory computer readable storage medium having computer readable program code embodied therein that executes to cause a source server to perform operations, the operations comprising:
detecting that a defined storage volume is present in a first cascade of storage volumes; performing a restore operation to the defined storage volume in a second cascade of storage volumes, from a restoration operation source storage volume in the first cascade of storage volumes; receiving a data write for an oldest storage volume in the second cascade of storage volumes; and performing a cleaning data write from the restoration operation source storage volume in the first cascade of storage volumes to a next storage volume in the first cascade of storage volumes, wherein the cleaning data write corresponds to the received data write and comprises copying data from the restoration operation source storage volume in the first cascade of storage volumes to the next downstream storage volume in the first cascade of storage volumes.