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guide:lustre [2020/04/30 10:42]
kevin
guide:lustre [2020/05/06 11:55]
kevin
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 ======The Lustre Parallel File System====== ======The Lustre Parallel File System======
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 =====Lustre on Lengau===== =====Lustre on Lengau=====
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 +Lengau has 16 OSSs arranged in pairs. ​ There are 96 OSTs connected to the 8 pairs. ​ Each OST has an approx. capacity of 43GiB giving a total Lustre storage of 4PiB. Each OSS pair connects to 12 OSTs.  Should one OSS in a pair succumb, the other still retains access to all 12 OSTs.
  
  
 =====Lustre tools===== =====Lustre tools=====
  
-The main tool for information on the files and directories of a Lustre file system is ''​lfs''​.+The main tool for displaying ​information on the files and directories of a Lustre file system is ''​lfs''​.
  
 ====Searching==== ====Searching====
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 To change the default striping applied to files in a sub-directory to 2 (and only applied to files larger than 1G) To change the default striping applied to files in a sub-directory to 2 (and only applied to files larger than 1G)
-  lfs setstripe -c 2  -s 1g <​dirname>​+  lfs setstripe -c 2  -s 1G <​dirname>​ 
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 +> Check this ^^^. 
 + 
 +**Note:**  
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 +  *When you change the settings for an existing file, the file will actually only change to the new striping when it is recreated. 
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 +  * The same applies when you change the settings for an existing directory. You will need to rename the directory, create a new directory with the new stripe settings, and then **copy** (not move) the files to the new directory to inherit the new settings. 
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 +See ''​lfs migrate''​ for more. 
  
/var/www/wiki/data/pages/guide/lustre.txt · Last modified: 2020/05/06 11:55 by kevin