公开(公告)号：US10268408B2

公开(公告)日：2019-04-23

申请号：US15853110

申请日：2017-12-22

Applicant: VMware, Inc.

Inventor： Mansi Shah ,  Eric Knauft ,  Jin Zhang ,  Christian Dickmann ,  Pascal Renauld ,  Radhika Vullikanti ,  Christos Karamanolis

IPC: G06F12/00 ,  G06F3/06 ,  G06F9/455

Abstract: In a storage cluster having nodes, blocks of a logical storage space of a storage object are allocated flexibly by a parent node to component nodes that are backed by physical storage. The method includes maintaining a first allocation map for the parent node, and second and third allocation maps for the first and second component nodes, respectively, executing a first write operation on the first component node and updating the second allocation map to indicate that the first block is a written block, selecting the second component node for executing a second write operation, and executing the second write operation on the second component node. Upon execution of the second write operation, the third allocation map is updated to indicate that the second block is a written block and the first allocation map is updated to indicate that the second block is allocated to the second component node.