Difference between revisions of "LSDF Online Storage: Snapshots"

From Lsdf
(Created page with "Snapshots are used to create a point-in-time copy of a file system or file sets. Snapshots can be used to quickly restore files or folders that were unintentionally deleted. S...")
 
 
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Snapshots can be used to quickly restore files or folders that were unintentionally deleted. Snapshots also provide a form of file versioning and the ability to revert to a previous version of a file, depending on the time interval between snapshots.
 
Snapshots can be used to quickly restore files or folders that were unintentionally deleted. Snapshots also provide a form of file versioning and the ability to revert to a previous version of a file, depending on the time interval between snapshots.
   
  +
Snapshots for LSDF storage projects are available in the sub directory ''.snapshots'' in the base directory of you OE (e.g. ''/lsdf/kit/scc/projects/.snapshots''). Snapshots for user home directories are available in the directory ''/lsdf/kit/.snapshots''. On the [[LSDF Online Storage:_Secure_Shell|login machines]] these directories are mapped with two environment variables ''$PROJECTSNAPSHOTS'' and ''$SNAPSHOTS''.
'''LSDF User Snapshots:'''
 
   
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To access the snapshots of the user directories on the login machines:
 
<pre>
 
<pre>
>ssh loginname@os-login.lsdf.kit.edu
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$ ssh loginname@os-login.lsdf.kit.edu
>cd $SNAPSHOTS
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$ cd $SNAPSHOTS
>ls
+
$ ls
 
daily-2018.02.02-03.00.12 monthly-2017.11.30-23.00.12
 
daily-2018.02.02-03.00.12 monthly-2017.11.30-23.00.12
 
daily-2018.02.03-03.00.12 monthly-2017.12.31-23.00.12
 
daily-2018.02.03-03.00.12 monthly-2017.12.31-23.00.12
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</pre>
 
</pre>
   
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To access the snapshots of the project directories on the login machines:
'''LSDF Project Snapshots'''
 
 
<pre>
 
<pre>
>ssh loginname@os-login.lsdf.kit.edu
+
$ ssh loginname@os-login.lsdf.kit.edu
>ls $PROJECTSNAPSHOTS
+
$ ls $PROJECTSNAPSHOTS
 
daily-2018.02.06-05.00.58
 
daily-2018.02.06-05.00.58
 
daily-2018.02.07-05.00.58
 
daily-2018.02.07-05.00.58
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</pre>
 
</pre>
   
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Additional information can be found in the description of the [[LSDF_Online_Storage:_Filesystems|LSDF file system characteristics]].
[[LSDF_Online_Storage_Filesystem|Some of the characteristics of the file systems are shown in Table. ]]
 
<hr>
 
<br>
 
<br>
 
   
 
[[Category:LSDF_Online_Storage|Snapshots]]
 
[[Category:LSDF_Online_Storage|Snapshots]]

Latest revision as of 14:45, 9 August 2019

Snapshots are used to create a point-in-time copy of a file system or file sets. Snapshots can be used to quickly restore files or folders that were unintentionally deleted. Snapshots also provide a form of file versioning and the ability to revert to a previous version of a file, depending on the time interval between snapshots.

Snapshots for LSDF storage projects are available in the sub directory .snapshots in the base directory of you OE (e.g. /lsdf/kit/scc/projects/.snapshots). Snapshots for user home directories are available in the directory /lsdf/kit/.snapshots. On the login machines these directories are mapped with two environment variables $PROJECTSNAPSHOTS and $SNAPSHOTS.

To access the snapshots of the user directories on the login machines:

$ ssh loginname@os-login.lsdf.kit.edu
$ cd $SNAPSHOTS
$ ls
daily-2018.02.02-03.00.12  monthly-2017.11.30-23.00.12
daily-2018.02.03-03.00.12  monthly-2017.12.31-23.00.12
daily-2018.02.04-03.00.12  monthly-2018.01.31-23.00.12
daily-2018.02.05-03.00.12  weekly-2018.01.14-14.30.12
daily-2018.02.06-03.00.12  weekly-2018.01.21-14.30.12
daily-2018.02.07-03.00.12  weekly-2018.01.28-14.30.12
daily-2018.02.08-03.00.12  weekly-2018.02.04-14.30.12

To access the snapshots of the project directories on the login machines:

$ ssh loginname@os-login.lsdf.kit.edu
$ ls $PROJECTSNAPSHOTS
daily-2018.02.06-05.00.58 
daily-2018.02.07-05.00.58
daily-2018.02.08-05.00.58
...

Additional information can be found in the description of the LSDF file system characteristics.