Data management at Niagara: Difference between revisions

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Data management at Niagara (view source)

Revision as of 18:34, 27 September 2018

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'''NOTE:''' Preparing these assessments takes several hours. If you change the access/modification time of a file in the interim, that will not be detected until the next cycle. A way for you to get immediate feedback is to use the ''''ls -lu'''' command on the file to verify the ctime and ''''ls -lc'''' for the mtime. If the file atime/ctime has been updated in the meantime, coming the purging date on the 15th it will no longer be deleted.
'''NOTE:''' Preparing these assessments takes several hours. If you change the access/modification time of a file in the interim, that will not be detected until the next cycle. A way for you to get immediate feedback is to use the ''''ls -lu'''' command on the file to verify the ctime and ''''ls -lc'''' for the mtime. If the file atime/ctime has been updated in the meantime, coming the purging date on the 15th it will no longer be deleted.
==How much Disk Space Do I have left?== <!--T:151-->
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The <tt>'''/scinet/niagara/bin/diskUsage'''</tt> command, available on the login nodes and datamovers, provides information in a number of ways on the home, scratch, project and archive file systems. For instance, how much disk space is being used by yourself and your group (with the -a option), or how much your usage has changed over a certain period ("delta information") or you may generate plots of your usage over time. Please see the usage help below for more details.
<pre>
Usage: diskUsage [-h|-?| [-a] [-u <user>]
      -h|-?: help
      -a: list usages of all members on the group
      -u <user>: as another user on your group
</pre>
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Did you know that you can check which of your directories have more than 1000 files with the <tt>'''/scinet/niagara/bin/topUserDirOver1000list'''</tt> command and which have more than 1GB of material with the <tt>'''/scinet/niagara/bin/topUserDirOver1GBlist'''</tt> command?
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Note:
* information on usage and quota is only updated every 3 hours!
Pinto
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