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  1. Lustre
  2. LU-18647

libaio read file from Lustre in DIO mode reports errno 22

Details

    • Bug
    • Resolution: Won't Fix
    • Minor
    • None
    • None
    • None
    • 3
    • 9223372036854775807

    Description

      There is a test util aiocp under lustre/tests directory. If use this util to copy a file from latest Lustre (tag: v2_16_51), in DIO mode , it reports errno 22: Invalid Argument.

      # aiocp -f DIRECT /mnt/lustre/d1/f1 ~/1
read missed bytes at 0 expected 2736 got -22

      Remove the flag -f DIRECT, it succeeds.

      # aiocp  /mnt/lustre/d1/f1 ~/1
# echo $?
0

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-18032 disable unaligned AIO

          • Critical - Crashes, loss of data, severe memory leak.
          • Reopened

          Bug - A problem which impairs or prevents the functions of the product. LU-17993 "ASSERTION( i == pv->ldp_count ) failed" is ll_direct_rw_pages

          • Blocker - Blocks development and/or testing work, production could not run.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. LU-16789 "lfs migrate" to use AIO/DIO or io_uring (kernel 5.1+)

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • In Progress

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              flei Feng Lei
              flei Feng Lei
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                Updated:
                Resolved: