[Lustre-discuss] lustre 1.6.7.1 checksum_type setting verification

jan julian julian at arsc.edu
Thu Apr 30 11:43:06 PDT 2009


We have compiled lustre with --disable checksum as a performance  
enhancement on 1.6.7.1  and would like to verify that this is actually  
in affect.  Reviewing /proc/fs/lustre/osc/*/checksum_type we see two  
responses across all of the test system nodes

mtg[1-2],mtn1sm,mtt[1-2]
----------------
  crc32 [adler]
  crc32 [adler]
  crc32 [adler]
  crc32 [adler]
  crc32 [adler]
  crc32 [adler]
----------------
mtmds1
----------------
  [crc32]
  [crc32]
  [crc32]
  [crc32]
  [crc32]
  [crc32]

Is this an indication that the checksum is running?    Is there a way  
to verify directly that checksum is disabled or not?





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