Scratch purging policy: Difference between revisions

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=How/where to check which files are slated for purging=
=How/where to check which files are slated for purging=
On each cluster go to the paths indicated below, and look for the file with your name.  
On each cluster go to the paths indicated below, and look for a file with your name.  
<pre>
<pre>
cedar:  /scratch/scratch_to_delete/
cedar:  /scratch/scratch_to_delete/
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niagara: /scratch/t/to_delete (link to /scratch/t/todelete/current)
niagara: /scratch/t/to_delete (link to /scratch/t/todelete/current)
</pre>
</pre>
The files will contain a list of filenames with full path, possibly other information about atime, ctime, size, etc
The file will contain a list of filenames with full path, possibly other information about atime, ctime, size, etc. It will be updated only on the 1st and the 12th of each month. If a file with your name is there it means you have candidates slated for purging, otherwise there is nothing to worry about that month.


These files are updated only on the 1st the 12th of each month. If a file with your name is there you have candidates slated for purging. If your name is not there then there is nothing to be purged.
If you access/read/move/delete some of the candidates between the 1st and the 11th, there won't be any changes in the assessment until the 12th.  


If you access/read some of the candidates and reset the atime between the 1st and the 11th, there still won't be any change in the assessment until the 12th.
If you access/read/move/delete some of the candidates after the 12th, then you have to check yourself to confirm your files won't be purged on the 15th (see below)
 
If you access/read some of the candidates and reset the atime after the 12th, then you have to check yourself to confirm your files won't be purged on the 15th. For that you may use the command "ls -lu <filename>" or "ls -lc <filename> "for all files of interest, to verify the atime|ctime has been updated.


= How do I check the age of a file? = <!--T:6-->
= How do I check the age of a file? = <!--T:6-->
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