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  1. Lustre
  2. LU-12926

lfs mkdir -c can cause repeated MDT indexes

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    • Icon: Bug Bug
    • Resolution: Cannot Reproduce
    • Icon: Major Major
    • None
    • Lustre 2.13.0, Lustre 2.12.3
    • 3
    • 9223372036854775807

      For a large (e.g. 5) number of MDTs, doing the following:

      lfs mkdir -c 5 dir/

      Can yield an MDT distribution of: 4, 0, 4, 1, 2 or other distributions with repeated and missing mdt indexes.

      Manually specifying mdts via -i works as expected.

      I believe this is due to the "auto_distributed" logic in lustre/utils/lfs.c::lfs_setdirstripe()

            laisiyao Lai Siyao
            utopiabound Nathaniel Clark
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              Created:
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