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Author Topic: VLR File sizes and BSZ setting  (Read 742 times)

Jim Morton

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VLR File sizes and BSZ setting
« on: January 21, 2022, 10:24:35 AM »
For VLR files I have a note of the following file size limitations.
BSZ values and files sizes for VLR files
0=2GB, 4=8GB, 8=65GB, 12=98GB

Yet we have a VLR file where BSZ=4 and it is 28GB.
Are my notes wrong?
This is what I'm seeing:
 -}end
 -}delete
 -}?prm('MB')
  0
 -}?fin("/facts93/data/GL/GLYJNL","FILE_CREATE")
 KEYED "/facts93/data/GL/GLYJNL",[1:1:2]+[2:1:4]+[3:1:4]+[4:1:4]+[5:1:5],[1:1:2]+[2:1:4]+[6:1:10]+[3:1:4]+[4:1:4]+[5:1:5],[1:1:2]+[2:1:4
 ]+[3:1:4]+[4:1:4]+[9:1:5],[1:1:2]+[2:1:4]+[3:1:4]+[8:1:45]+[4:1:4]+[5:1:5],[1:1:2]+[6:1:10]+[2:1:4]+[3:1:4]+[4:1:4]+[5:1:5],[1:1:2]+[2:
 1:4]+[3:1:4]+[6:1:10]+[4:1:4]+[5:1:5],[1:1:2]+[2:1:4]+[3:1:4]+[4:1:4]+[6:1:10]+[5:1:5],[1:1:2]+[10:1:3]+[11:1:6:"D"]+[2:1:4]+[3:1:4]+[4
 :1:4]+[5:1:5],0,-768,BSZ=4,OPT="0"
 -}

> pwd
> /facts93/data/GL
> ls -l -h GLYJNL
-rw-r--r--. 1 facts facts 28G Dec 14 14:42 GLYJNL

So what gives???  :)

BTW: The online documentation still shows the max file size for Pvx data files as 2GB with a note about the 'MB' param. I believe that limitation was removed some versions back.



jasonc

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Re: VLR File sizes and BSZ setting
« Reply #1 on: January 21, 2022, 02:00:58 PM »
Jim,
Assuming prm('xk')=1...  Limit for your file is 32 GB.
See here:
https://manual.pvxplus.com/PXPLUS/parameters/xk.htm

Jim Morton

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Re: VLR File sizes and BSZ setting
« Reply #2 on: January 21, 2022, 02:30:04 PM »
Aha. I need to update my notes to include the XK parameter.
Thanks for the explanation!

Maybe the online manual under system limits should be updated to include how BSZ and 'XK' parameter affect file size limits...