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  1. Lustre
  2. LU-11518

lock_count is exceeding lru_size

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • Lustre 2.14.0
    • Client:
      2.11.53_197_g0f2d3f5
      Server:
      2.11.53_197_g0f2d3f5
    • 3
    • 9223372036854775807

    Description

      Mitsuhiro reported lock_count is exceeding lru_size ( disabled lru resize) on DDN es3.x branch before, and when we tested with master, found the same problem can also be seen on upstream.

       
       

      # for i in `seq -w 10001 20000`; do dd if=/dev/zero of=/mnt/lustre/1KB_file-${i} bs=1K count=1 > /dev/null 2>&1 ; echo ${i} ; done
      
      # lctl get_param ldlm.namespaces.*.lru_size
      ldlm.namespaces.lustre-MDT0000-mdc-ffff8d0afcc55000.lru_size=800
      ldlm.namespaces.lustre-OST0000-osc-ffff8d0afcc55000.lru_size=800
      ldlm.namespaces.lustre-OST0001-osc-ffff8d0afcc55000.lru_size=800
      
      # lctl get_param ldlm.namespaces.*.lock_count
      ldlm.namespaces.lustre-MDT0000-mdc-ffff8d0afcc55000.lock_count=800
      ldlm.namespaces.lustre-OST0000-osc-ffff8d0afcc55000.lock_count=4090 ldlm.namespaces.lustre-OST0001-osc-ffff8d0afcc55000.lock_count=4096
       
      

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              guzheng Gu Zheng (Inactive)
              guzheng Gu Zheng (Inactive)
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                Created:
                Updated:
                Resolved: