Re: [thredds] THREDDS prevents freeing disk space

• To: thredds@xxxxxxxxxxxxxxxx
• Subject: Re: [thredds] THREDDS prevents freeing disk space
• From: John Caron <caron@xxxxxxxxxxxxxxxx>
• Date: Thu, 28 Feb 2013 15:46:08 -0700

Hi Nicolas :

Its likely that the file is in the TDS object cache. You can clear the cache 
without having to restart, from the admin/debug page. You have to set up 
"Remote Management" : 

  
http://www.unidata.ucar.edu/projects/THREDDS/tech/tds4.3/reference/RemoteManagement.html

John

On 1/9/2013 5:27 AM, Nicolas Baldeck wrote:
> Dear
> 
> I'm keeping several days archive on my server.
> Every time a new run is issued, I delete an older one.
> 
> When I do "rm" on the older files, it's no longer shows up with "ls".
> However TDS is keeping the file busy, and disk space is not freed.
> 
> I can see this thanks to "lsof"
> 
> $ lsof
> 
>     java       3436    tomcat7   44r      REG                8,1
>     403204480     393349
>     /home/upload/data/france/2013/01/03/06/rasp-france_2013-01-04_16:00:00.nc
>     <http://00.nc/> (deleted)
>     java       3436    tomcat7   45r      REG                8,1
>     403204480     393313
>     /home/upload/data/france/2013/01/02/06/rasp-france_2013-01-03_11:00:00.nc
>     <http://00.nc/> (deleted)
>     java       3436    tomcat7   46r      REG                8,1
>     403204480     393288
>     /home/upload/data/france/2013/01/01/06/rasp-france_2013-01-02_06:00:00.nc
>     <http://00.nc/> (deleted)
>     java       3436    tomcat7   47r      REG                8,1 40
> 
> 
> 
> To free disk space, I need to restart tomcat.
> 
> So, is there a way to notify THREDDS a dataset will be deleted, so it 
> closes the files before deletion ?
> 
> 
> 
> I'm using TDS 4.3, with tomcat 7, openjdk, over ubuntu 12.04 x64.
> Dataset configuration :
> 
>     <datasetScan name="RASP" ID="rasp" path="rasp"
>     location="/home/upload/data/">
>          <metadata inherited="true">
>            <serviceName>all</serviceName>
>            <dataType>Grid</dataType>
>          </metadata>
>          <filter>
>            <include wildcard="*.nc"/>
>          </filter>
>        </datasetScan>
> 
> can be seen there : http://data2.rasp-france.org/thredds/
> 
> 
> Regards
> 
> 
> -- 
> Nicolas BALDECK
> Prévisions Météo libres et gratuites pour le Vol Libre et le Vol à Voile.
> http://rasp-france.org/
> 
> 
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• References:
  • [thredds] THREDDS prevents freeing disk space
    • From: Nicolas Baldeck