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vfs_shadow_copy(8) [suse man page]

VFS_SHADOW_COPY(8)					    System Administration tools 					VFS_SHADOW_COPY(8)

NAME

       vfs_shadow_copy - Make a Samba share read only for a specified time period

SYNOPSIS

       vfs objects = shadow_copy

DESCRIPTION

       This VFS module is part of the samba(7) suite.

       The vfs_shadow_copy VFS module functionality that is similar to Microsoft Shadow Copy services. When setup properly, this module allows
       Microsoft Shadow Copy clients to browse "shadow copies" on Samba shares.

       This module is stackable.

CONFIGURATION

       vfs_shadow_copy relies on a filesystem snapshot implementation. Many common filesystems have native support for this.

       Filesystem snapshots must be mounted on specially named directories in order to be recognized by vfs_shadow_copy. The snapshot mount points
       must be immediate children of a the directory being shared.

       The snapshot naming convention is @GMT-YYYY.MM.DD-hh.mm.ss, where:

       o   YYYY is the 4 digit year

       o   MM is the 2 digit month

       o   DD is the 2 digit day

       o   hh is the 2 digit hour

       o   mm is the 2 digit minute

       o   ss is the 2 digit second.

       The vfs_shadow_copy snapshot naming convention can be produced with the following date(1) command:

		TZ=GMT date +@GMT-%Y.%m.%d-%H.%M.%S

EXAMPLES

       Add shadow copy support to user home directories:

		   [homes]
		vfs objects = shadow_copy

CAVEATS

       This is not a backup, archival, or version control solution.

       With Samba or Windows servers, vfs_shadow_copy is designed to be an end-user tool only. It does not replace or enhance your backup and
       archival solutions and should in no way be considered as such. Additionally, if you need version control, implement a version control
       system.

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 3.5							    06/18/2010							VFS_SHADOW_COPY(8)

Check Out this Related Man Page

VFS_READAHEAD(8)					    System Administration tools 					  VFS_READAHEAD(8)

NAME

       vfs_readahead - pre-load the kernel buffer cache

SYNOPSIS

       vfs objects = readahead

DESCRIPTION

       This VFS module is part of the samba(7) suite.

       This vfs_readahead VFS module detects read requests at multiples of a given offset (hex 0x80000 by default) and then tells the kernel via
       either the readahead system call (on Linux) or the posix_fadvise system call to pre-fetch this data into the buffer cache.

       This module is useful for Windows Vista clients reading data using the Windows Explorer program, which asynchronously does multiple file
       read requests at offset boundaries of 0x80000 bytes.

       The offset multiple used is given by the readahead:offset option, which defaults to 0x80000.

       The size of the disk read operations performed by vfs_readahead is determined by the readahead:length option. By default this is set to the
       same value as the readahead:offset option and if not set explicitly will use the current value of readahead:offset.

       This module is stackable.

OPTIONS

       readahead:offset = BYTES
	   The offset multiple that causes readahead to be requested of the kernel buffer cache.

       readahead:length = BYTES
	   The number of bytes requested to be read into the kernel buffer cache on each readahead call.

       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

		[hypothetical]
		vfs objects = readahead

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_READAHEAD(8)
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