vfs_syncops - Ensure meta data operations are performed synchronously.
vfs objects = syncops
System Administration tools VFS_SYNCOPS(8)
NAME
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 part of version 4.13.17 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.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+-----------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+-----------------------+
|Availability | service/network/samba |
+---------------+-----------------------+
|Stability | Volatile |
+---------------+-----------------------+
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from
https://download.samba.org/pub/samba/stable/samba-4.13.17.tar.gz.
Further information about this software can be found on the open source
community website at http://www.samba.org/.
Samba 4.13.17 06/28/2022 VFS_SYNCOPS(8)