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20040529: CRAFT archival

>From: Gerry Creager N5JXS <address@hidden>
>Organization: Texas A&M University -- AATLT
>Keywords:  200405270011.i4R0BjtK010667 LDM Linux RAID JFS

Gerry,

>You may want to look at bigbird.  I'm not seeing any Level II data 
>that's not staying bzip'd.

I switched the pqact action for CRAFT data to filing bzip2 compressed
products directly.  The reason I did this was to see the impact on CPU
use and to see if it would help with the congestion on the RAID.  Also,
the latest GEMPAK distribution 5.2.2p2 (which I loaded on bigbird) can
use the bzip2 compressed images directly.

>If that's the case, I can maintain a lot of 
>CRAFT archive.

Yes, a lot more than if all images were uncompresed.

>In fact, I was thinking of adding a script that'd keep 
>only the last 24 hrs of Level II uncompressed, and then keep perhaps 10 
>days or more of compressed data as an archive.

The current GEMPAK pqact.gempak_craft pattern action file has
the commented-out entry for decoding the CRAFT images.  This could
be turned back on and scouring could be setup to keep about a day
of uncompressed images.

>I'm also not seeing DDPLUS anywhere I can identify.

IDS|DDPLUS data is being received and apparently decoded.  There is
current data in:

/data/ldm/gempak/surface
/data/ldm/gempak/syn
/data/ldm/gempak/upperair
etc.

Where are you looking, or, what am I missing?

>I was going to 
>start looking at making ShapeFiles from watch/warn data but I can't use 
>the info here 'til I can find the DDPLUS stuff.

Are you looking for the raw IDS|DDPLUS data to be written to disk, or
are you looking for the data to be decoded into GEMPAK format?  The
data is being decoded into GEMPAK format, so if something else is
missing, it is because there is no appropriate action(s) in
~ldm/etc/pqact.conf.  If this is the case, you could add the action
running on mesodata and send a HUP signal to the pqact that is
running to process actions in pqact.conf.

>That's not a 
>show-stopper.  I'll nfs-mount from mesodata, but that box is creaking 
>and may need to be forklifted soon.

If you want to have a day's worth of uncompressed CRAFT data online,
let me know and I will turn the decoding back on.

>Later, gerry

Cheers,

Tom
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