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  1. Lustre
  2. LU-14510

FIEMAP does not work on DoM files

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    • Icon: Bug Bug
    • Resolution: Fixed
    • Icon: Minor Minor
    • Lustre 2.17.0
    • Lustre 2.14.0, Lustre 2.12.6, Lustre 2.15.0
    • 3
    • 9223372036854775807

      Creating a DoM PFL file and then running "filefrag -v" on it (ioctl(FIEMAP)) does not work:

      # lfs setstripe -E 1M -L mdt -E 16m -c 4 -E eof -c -1 /mnt/testfs/dom-pfl
# dd if=/dev/zero of=/mnt/testfs/dom-pfl2 bs=1M count=1
# filefrag -v /mnt/testfs/dom-pfl2
Filesystem type is: bd00bd0
File size of /mnt/testfs/dom-pfl2 is 1048576 (1024 blocks of 1024 bytes)
/mnt/testfs/dom-pfl2: FIBMAP unsupported

      The "FIBMAP unsupported" message is a bit misleading, since it tries FIEMAP first, but falls back to FIBMAP if that doesn't work.

            tappro Mikhail Pershin
            adilger Andreas Dilger
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              Created:
              Updated:
              Resolved: