LSDF Online Storage: Snapshots: Difference between revisions
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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. |
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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:LSDF_Online_Storage:_Secure_Shelllogin machines|LSDF_Online_Storage:_Secure_Shelllogin machines]] these directories are mapped with two environment variables ''$PROJECTSNAPSHOTS'' and ''$SNAPSHOTS''. |
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'''LSDF User Snapshots:''' |
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To access the snapshots of the user directories on the login machines: |
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<pre> |
<pre> |
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$ ssh loginname@os-login.lsdf.kit.edu |
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$ cd $SNAPSHOTS |
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$ ls |
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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 |
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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: |
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'''LSDF Project Snapshots''' |
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<pre> |
<pre> |
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$ ssh loginname@os-login.lsdf.kit.edu |
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$ ls $PROJECTSNAPSHOTS |
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daily-2018.02.06-05.00.58 |
daily-2018.02.06-05.00.58 |
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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]]. |
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[[LSDF_Online_Storage_Filesystem|Some of the characteristics of the file systems are shown in Table. ]] |
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<hr> |
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<br> |
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<br> |
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[[Category:LSDF_Online_Storage|Snapshots]] |
[[Category:LSDF_Online_Storage|Snapshots]] |
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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 LSDF_Online_Storage:_Secure_Shelllogin 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.
