1 .\" Title: vfs_shadow_copy2
2 .\" Author: [see the "AUTHOR" section]
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5 .\" Manual: System Administration tools
9 .TH "VFS_SHADOW_COPY2" "8" "09/30/2009" "Samba 3\&.4" "System Administration tools"
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170 vfs_shadow_copy2 \- Expose snapshots to Windows clients as shadow copies\&.
174 \FCvfs objects = shadow_copy2\F[]
178 This VFS module is part of the
183 \FCvfs_shadow_copy2\F[]
184 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\&.
186 This is a 2nd implementation of a shadow copy module\&. This version has the following features:
196 You don\'t need to populate your shares with symlinks to the snapshots\&. This can be very important when you have thousands of shares, or use [homes]\&.
207 The inode number of the files is altered so it is different from the original\&. This allows the \'restore\' button to work without a sharing violation\&.
212 This module is stackable\&.
215 \FCvfs_shadow_copy2\F[]
216 relies on a filesystem snapshot implementation\&. Many common filesystems have native support for this\&.
218 Filesystem snapshots must be mounted on specially named directories in order to be recognized by
219 \FCvfs_shadow_copy2\F[]\&. The snapshot mount points must be immediate children of a the directory being shared\&.
221 The snapshot naming convention is @GMT\-YYYY\&.MM\&.DD\-hh\&.mm\&.ss, where:
280 is the 2 digit minute
292 is the 2 digit second\&.
297 \FCvfs_shadow_copy2\F[]
298 snapshot naming convention can be produced with the following
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314 TZ=GMT date +@GMT\-%Y\&.%m\&.%d\-%H\&.%M\&.%S
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328 shadow:snapdir = SNAPDIR
330 Path to the directory where snapshots are kept\&.
333 shadow:basedir = BASEDIR
335 Path to the base directory that snapshots are from\&.
338 shadow:fixinodes = yes/no
341 \FCshadow:fixinodes \F[]
342 then this module will modify the apparent inode number of files in the snapshot directories using a hash of the files path\&. This is needed for snapshot systems where the snapshots have the same device:inode number as the original files (such as happens with GPFS snapshots)\&. If you don\'t set this option then the \'restore\' button in the shadow copy UI will fail with a sharing violation\&.
346 Add shadow copy support to user home directories:
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361 \m[blue]\fBvfs objects = shadow_copy2\fR\m[]
362 \m[blue]\fBshadow:snapdir = /data/snaphots\fR\m[]
363 \m[blue]\fBshadow:basedir = /data/home\fR\m[]
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376 This is not a backup, archival, or version control solution\&.
378 With Samba or Windows servers,
379 \FCvfs_shadow_copy2\F[]
380 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\&.
383 This man page is correct for version 3\&.2\&.7 of the Samba suite\&.
386 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\&.