VFS_SNAPPER(8) System Administration tools VFS_SNAPPER(8)

NAME

vfs_snapper - Expose snapshots managed by snapper as shadow-copies

SYNOPSIS

vfs objects = snapper

DESCRIPTION

This VFS module is part of the samba(8) suite.

The vfs_snapper VFS module exposes snapshots managed by snapper for
use by Samba. This provides the ability for remote SMB clients to
access shadow-copies via Windows Explorer using the "previous
versions" dialog.

Snapshots can also be created and remove remotely, using the File
Server Remote VSS Protocol (FSRVP). Snapshot creation and deletion
requests are forwarded to snapper via DBus.

This module is stackable.

CONFIGURATION

The underlying share path must have a corresponding snapper
configuration file. The snapshot directory tree must allow access for
relevant users.

[share]
vfs objects = snapper


For remote snapshot creation and deletion, Samba's FSRVP server must
be configured in the [global] section:

[global]
registry shares = yes
include = registry

PERMISSIONS

Snapper stores snapshots under a .snapshots subdirectory. This
directory must permit traversal for any users wishing to access
snapshots via the Windows Explorer previous versions dialog. By
default, traversal is forbidden for all non-root users. Additionally,
users must be granted permission to list snapshots managed by
snapper, via snapper's ALLOW_USERS or ALLOW_GROUPS options. Snapper
can grant these users and groups .snapshots traversal access
automatically via the SYNC_ACL option.

Remote snapshot creation and deletion is only permitted by Samba for
Active Directory administrators, backup operators, or users
explicitly granted SeBackupPrivilege. Snapper must also permit
creation and deletion for the appropriate user, via snapper's
ALLOW_USERS or ALLOW_GROUPS options.

The DiskShadow.exe FSRVP client initially authenticates as the Active
Directory computer account. This account must therefore be granted
the same permissions as the user account issuing the snapshot
creation and deletion requests.

VERSION

This man page is part of version 4.18.11 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 4.18.11 03/13/2024 VFS_SNAPPER(8)