VFS_SHADOW_COPY - Online Linux Manual PageSection : 8
Updated : 04/11/2016
Source : Samba 3​.6
Note : System Administration tools
NAMEvfs_shadow_copy − Make a Samba share read only for a specified time period
SYNOPSISvfs objects = shadow_copy
DESCRIPTIONThis 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​.
CONFIGURATIONvfs_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: •  YYYY is the 4 digit year •  MM is the 2 digit month •  DD is the 2 digit day •  hh is the 2 digit hour •  mm is the 2 digit minute •  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
EXAMPLESAdd shadow copy support to user home directories: [homes] vfs objects = shadow_copy
CAVEATSThis 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​.
VERSIONThis man page is correct for version 3​.0​.25 of the Samba suite​.
AUTHORThe 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​. 0
Johanes Gumabo
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