1VFS_SYNCOPS(8)            System Administration tools           VFS_SYNCOPS(8)
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NAME

6       vfs_syncops - Ensure meta data operations are performed synchronously.
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SYNOPSIS

9       vfs objects = syncops
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DESCRIPTION

12       This VFS module is part of the samba(7) suite.
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14       Some filesystems (even some journaled filesystems) require that a
15       fsync() be performed on many meta data operations to ensure that the
16       operation is guaranteed to remain in the filesystem after a power
17       failure. This is particularly important for some cluster filesystems
18       which are participating in a node failover system with clustered Samba.
19       On those filesystems the vfs_syncops VFS module provides a way to
20       perform those operations safely.
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22       This module is stackable.
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CONFIGURATION

25       Most of the performance loss with the vfs_syncops VFS module is in
26       fsync on close(). You can disable that with syncops:onclose = no that
27       can be set either globally or per share.
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29       On certain filesystems that only require the last data written to be
30       fsync()'ed, you can disable the metadata synchronization of this module
31       with syncops:onmeta = no. This option can be set either globally or per
32       share.
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34       The vfs_syncops VFS module can also be disabled completely for a share
35       with syncops:disable = true.
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EXAMPLES

38       Add syncops functionality for [share]:
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40                   [share]
41                path = /data/share
42                vfs objects = syncops
43                syncops:onclose = no
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VERSION

46       This man page is part of version 4.18.9 of the Samba suite.
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AUTHOR

49       The original Samba software and related utilities were created by
50       Andrew Tridgell. Samba is now developed by the Samba Team as an Open
51       Source project similar to the way the Linux kernel is developed.
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55Samba 4.18.9                      11/30/2023                    VFS_SYNCOPS(8)
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