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== ShadowCopy ==
 
== ShadowCopy ==
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ShadowCopy takes a snapshot of ibays and user home folders at scheduled intervals and allows network users to restore previous versions of files via the Windows Explorer file properties page.
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==='''Overview'''===
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This works for Windows XP and above.
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This Howto is based on information contained in [[bugzilla:1549]].
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To obtain a client for Windows 2000SP3+ download from [http://technet.microsoft.com/en-gb/windowsserver/bb405951.aspx here].
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ShadowCopy takes a snapshot of ibays and user home folders at scheduled intervals and allows network users to restore previous versions of files via the Windows Explorer file properties page.
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A client is installed by default in Windows XP.
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To obtain a client for Windows 2000SP3+ download from [http://technet.microsoft.com/en-gb/windowsserver/bb405951.aspx here].
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===RPM version requirements===
 
This functionality is included in e-smith-samba since version 1.14.0-20.
 
This functionality is included in e-smith-samba since version 1.14.0-20.
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Please report any bugs to [[bugzilla:1549]].
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==='''Configuration'''===
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====RPM version requirements====
      
To check the installed rpm version
 
To check the installed rpm version
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On a SME Server 7.3 server this gives
 
On a SME Server 7.3 server this gives
 
e-smith-samba-1.14.1-3.el4.sme
 
e-smith-samba-1.14.1-3.el4.sme
so the installed rpm is more recent than that required (e-smith-samba-1.14.0-20)
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so the installed rpm is more recent than that required.
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===Configuration===
    
====Enabling and disabling====
 
====Enabling and disabling====
   
Initially disable ShadowCopy for specific ibays or users you don't wish to take snapshots for
 
Initially disable ShadowCopy for specific ibays or users you don't wish to take snapshots for
 
eg
 
eg
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  db accounts setprop ibay2 ShadowCopy disabled
 
  db accounts setprop ibay2 ShadowCopy disabled
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{{Note box|For the script to work correctly, leave two or more users enabled. This is a bug in the current package and is being looked at in bugzilla.}}
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{{Note box|For the script to work correctly, leave two or more users enabled.}}
 
      
To re-enable any disabled ibays or users do:
 
To re-enable any disabled ibays or users do:
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Then enable and expand templates
 
Then enable and expand templates
 
  config setprop smb ShadowCopy enabled
 
  config setprop smb ShadowCopy enabled
  signal-event ibay-modify Primary
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config setprop smb WideLinks on
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  signal-event ibay-modify
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=====WideLinks=====
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Samba 3.5 changed the default for WideLinks to no, this tightens security to prevent symbolic links seeing outside the directory root. ShadowCopy itself will work without this setting, but will require shell access to restore files..
    
====Adding ibays and users to your server====
 
====Adding ibays and users to your server====
   
Add ibays and users to your sme server in the normal way. If ShadowCopy is enabled, then by default the newly added ibays and users will be included in ShadowCopy behaviour, so you must specifically exclude them from ShadowCopy behaviour using the disable commands mentioned above on a per ibay and user basis.
 
Add ibays and users to your sme server in the normal way. If ShadowCopy is enabled, then by default the newly added ibays and users will be included in ShadowCopy behaviour, so you must specifically exclude them from ShadowCopy behaviour using the disable commands mentioned above on a per ibay and user basis.
       
====Snapshots====
 
====Snapshots====
   
You need to schedule shadow copy to take snapshots.
 
You need to schedule shadow copy to take snapshots.
 
You can do this manually from the command prompt
 
You can do this manually from the command prompt
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At the command prompt do
 
At the command prompt do
 
  /etc/e-smith/events/actions/shadow-copy-rotate
 
  /etc/e-smith/events/actions/shadow-copy-rotate
{{Note box|You will need enough free disk space to take a copy of the entire /home/e-smith/files directory plus any changes that take place.}}
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{{Note box|You will need enough free disk space [and backup capacity] to take a copy of the entire /home/e-smith/files directory plus any changes that take place.}}
 
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A suitable cron job that runs the script every hour from 10am to 5pm on weekdays would contain the following (adjust to suit your requirements):
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====Setup Cron====
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A cron job that runs the script every hour from 10am to 5pm on weekdays would contain the following. Adjust to suit your requirements.
    
Create a file
 
Create a file
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  /etc/init.d/crond restart
 
  /etc/init.d/crond restart
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====Location of ShadowCopy files====
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In Windows access the snapshot files via Windows Explorer file properties page, Previous Versions tab.
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NB. Users recover files with windows explorer.
 
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A Windows client exists in WinXP SP2
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To obtain a client for Windows 2000SP3+ download from [http://technet.microsoft.com/en-gb/windowsserver/bb405951.aspx here].
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====Location of ShadowCopy files====
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ShadowCopy files are located in:
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The ShadowCopy files are located in:
 
  /home/e-smith/files/.shadow/1
 
  /home/e-smith/files/.shadow/1
 
  /home/e-smith/files/.shadow/2
 
  /home/e-smith/files/.shadow/2
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The number of subfolders depends on how many snapshots have been taken.
 
The number of subfolders depends on how many snapshots have been taken.
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The maximum number of snapshots is 64.
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Note that a new snapshot is only taken if files have changed.
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Note that a new snapshot is only taken if files have changed.
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===Bugs===
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If you find a problem report it to the bug tracker at bugs.contribs.org
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Feedback to the bug tracker at
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[[bugzilla:1549]]
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==='''References:'''===
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===References===
    
[[bugzilla:1549]]
 
[[bugzilla:1549]]
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[[bugzilla:6858]] Wide Links
    
[http://forums.contribs.org/index.php?topic=39954.0 Shadow Copy topic in the Contribs forums]
 
[http://forums.contribs.org/index.php?topic=39954.0 Shadow Copy topic in the Contribs forums]
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[[Category:Howto]]
 
[[Category:Howto]]
 
[[Category:Backup]]
 
[[Category:Backup]]
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[[Category:Administration:File and Directory Access]]
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