US 11,836,155 B2
File system operation handling during cutover and steady state
Akhil Kaushik, Bangalore (IN); and Balaji Ramani, Bangalore (IN)
Assigned to NetApp, Inc., San Jose, CA (US)
Filed by NetApp Inc., Sunnyvale, CA (US)
Filed on Apr. 2, 2021, as Appl. No. 17/221,043.
Application 17/221,043 is a continuation of application No. 16/191,582, filed on Nov. 15, 2018, granted, now 10,970,310.
Claims priority of application No. 201841029051 (IN), filed on Aug. 2, 2018.
Prior Publication US 2021/0224293 A1, Jul. 22, 2021
Int. Cl. G06F 16/00 (2019.01); G06F 16/27 (2019.01); G06F 16/11 (2019.01); G06F 11/14 (2006.01); G06F 16/176 (2019.01)
CPC G06F 16/275 (2019.01) [G06F 11/1464 (2013.01); G06F 11/1466 (2013.01); G06F 16/119 (2019.01); G06F 16/128 (2019.01); G06F 16/1774 (2019.01); G06F 2201/825 (2013.01); G06F 2201/835 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
asynchronously replicating incremental changes of data within a volume of a storage virtual machine at a first node to a replicated volume at a second node utilizing asynchronous incremental transfers;
in response to completing the asynchronous incremental transfers, synchronously replicating operations, targeting the volume, as replicated operations targeting the replicated volume, wherein:
in response to a timestamp of an inode for a storage object of the volume targeted by an operation being different than a timestamp of a replicated storage object of the replicated volume targeted by a replicated operation executed out of order, refraining from modifying the timestamp of the inode based upon the timestamp of the inode being larger than a timestamp of a current operation being executed; and
in response to reaching a steady state of synchronous replication, migrating the storage virtual machine at the first node to the second node as a replicated storage virtual machine.