公开(公告)号：US20220391240A1

公开(公告)日：2022-12-08

申请号：US17463573

申请日：2021-09-01

Applicant: VMWARE, INC.

Inventor： PRASANNA AITHAL ,  PRASAD RAO JANGAM ,  SRINIVASA SHANTHARAM ,  MAHESH HIREGOUDAR ,  ROHAN PASALKAR ,  SRIKANTH MAHABALARAO

IPC: G06F9/455 ,  G06F9/46 ,  G06F16/188 ,  G06F16/13

Abstract: An example method of handling, at a hypervisor on a host in a virtualized computing system, a write input/output (IO) operation to a file on a storage device having a virtual machine file system (VMFS) is described. The method includes: generating logical transactions for the write IO operation having updates to metadata of the VMFS for the file; estimating, for the logical transactions, common space reservations for those of the updates to common fields in the metadata for the file; estimating, for the logical transactions, exclusive space reservations for those of the updates to exclusive fields in the metadata for the file; batching the logical transactions into a physical transaction, which includes a single reservation of space in a journal of the VMFS based on the common space reservations and a reservations of space in the journal for each of the exclusive space reservations, respectively.

公开(公告)号：US20180260405A1

公开(公告)日：2018-09-13

申请号：US15630983

申请日：2017-06-23

Applicant: VMWARE, INC.

Inventor： SRINIVASA SHANTHARAM ,  PRADEEP KRISHNAMURTHY ,  ASIT DESAI ,  PRASANNA AITHAL ,  BRYAN BRANSTETTER ,  PRASAD RAO JANGAM ,  MAHESH S. HIREGOUDAR ,  RAGHAVAN PICHAI ,  VIVEK PATIDAR

IPC: G06F17/30 ,  G06F12/0873

CPC classification number: G06F17/30097 ,  G06F9/45533 ,  G06F12/0873

Abstract: System and method for executing a file system operation for a computer system utilize a computed hash value of a file system object to access a hash block of a file system directory stored in a storage system to locate a hash slot corresponding to the computed hash value. Using at least one of a hash pointer in the hash slot and an allocation block of the file system directory, a dirent slot in a dirent block of the file system directory is located to perform an operational task on the particular dirent slot to execute the file system operation.