Uploaded image for project: 'Lustre'
  1. Lustre
  2. LU-14459

DNE3: directory auto split during create

XMLWordPrintable

    • Icon: Improvement Improvement
    • Resolution: Unresolved
    • Icon: Major Major
    • None
    • None
    • 9223372036854775807

      Directory auto-split should be done when the dir_split_count is hit during file creation to minimize the number of entries that need to be moved, rather than afterward. Otherwise, the entries are being created on a single MDT first, and only being migrated on a later directory access. This is sub-optimal for two reasons:

      • the initial file creation will be limited to a single MDT and not distribute the load across multiple MDTs, so just entry migration will still leave all the inodes on the original MDT
      • the post-creation migration will need to move many more files/entries to the other MDTs than if the files are created on the correct MDT to start with

            wc-triage WC Triage
            adilger Andreas Dilger
            Votes:
            0 Vote for this issue
            Watchers:
            9 Start watching this issue

              Created:
              Updated: