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vfs_syncops(8) [centos man page]

VFS_SYNCOPS(8)						    System Administration tools 					    VFS_SYNCOPS(8)

vfs_syncops - Ensure meta data operations are performed synchronously. SYNOPSIS
vfs objects = syncops DESCRIPTION
This VFS module is part of the samba(7) suite. Some filesystems (even some journaled filesystems) require that a fsync() be performed on many meta data operations to ensure that the operation is guaranteed to remain in the filesystem after a power failure. This is particularly important for some cluster filesystems which are participating in a node failover system with clustered Samba. On those filesystems the vfs_syncops VFS module provides a way to perform those operations safely. This module is stackable. CONFIGURATION
Most of the performance loss with the vfs_syncops VFS module is in fsync on close(). You can disable that with syncops:onclose = no that can be set either globally or per share. On certain filesystems that only require the last data written to be fsync()'ed, you can disable the metadata synchronization of this module with syncops:onmeta = no. This option can be set either globally or per share. The vfs_syncops VFS module can also be disabled completely for a share with syncops:disable = true. EXAMPLES
Add syncops functionality for [share]: [share] path = /data/share vfs objects = syncops syncops:onclose = no VERSION
This man page is correct for version 4.1.0 of the Samba suite. AUTHOR
The original Samba software and related utilities were created by Andrew Tridgell. Samba is now developed by the Samba Team as an Open Source project similar to the way the Linux kernel is developed. Samba 4.1 06/17/2014 VFS_SYNCOPS(8)

Check Out this Related Man Page

VFS_PREALLOC(8) 					    System Administration tools 					   VFS_PREALLOC(8)

vfs_prealloc - preallocate matching files to a predetermined size SYNOPSIS
vfs objects = prealloc DESCRIPTION
This VFS module is part of the samba(7) suite. The vfs_prealloc VFS module preallocates files to a specified size each time a new file is created. This is useful in environments where files are of a predetermined size will be written to a disk subsystem where extending file allocations is expensive. This module is stackable. OPTIONS
prealloc:EXT = BYTES Preallocate all files with the extension EXT to the size specified by BYTES. The following suffixes may be applied to BYTES: o K - BYTES is a number of kilobytes o M - BYTES is a number of megabytes o G - BYTES is a number of gigabytes EXAMPLES
A process writes TIFF files to a Samba share, and the is known these files will almost always be around 4 megabytes (4194304 bytes): [frames] path = /data/frames vfs objects = prealloc prealloc:tiff = 4M CAVEATS
vfs_prealloc is not supported on all platforms and filesystems. Currently only XFS filesystems on Linux and IRIX are supported. VERSION
This man page is correct for version 3.0.25 of the Samba suite. AUTHOR
The original Samba software and related utilities were created by Andrew Tridgell. Samba is now developed by the Samba Team as an Open Source project similar to the way the Linux kernel is developed. Samba 4.0 06/17/2014 VFS_PREALLOC(8)
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