Uploaded image for project: 'Lustre'
  1. Lustre
  2. LU-10911 FLR2: Read only erasure coding
  3. LU-19520

FLR-EC: Don't read parity components on old clients

    XMLWordPrintable

Details

    • Technical task
    • Resolution: Unresolved
    • Medium
    • None
    • None
    • 3
    • 9223372036854775807

    Description

      We need to make sure that older clients do not try to read the parity components. This can probably be handled by setting the layout pattern of the parity components to LOV_PATTERN_PARITY, but this needs to be tested. It may be desirable to exclude the LOV_PATTERN_PARITY components from the layout that is sent to older clients, since 2.15.x does not (yet) have patch https://review.whamcloud.com/51060 ("LU-16837 llite: handle unknown layout component") to handle FLR-EC layouts properly.

      Attachments

        Issue Links

          is related to

          Technical task - A technical task. LU-19481 FLR-EC: Basic do-no-harm lov IO support

          • Medium -
          • Resolved
          is related to

          Technical task - A technical task. LU-12187 FLR-EC: erasure coding layout handling

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

          Improvement - An improvement or enhancement to an existing feature or task. LU-16837 interop: client skip unknown component mirror

          • Major - Major loss of function.
          • Resolved

          Activity

            People

              bobijam Zhenyu Xu
              paf0186 Patrick Farrell
              Votes:
              0 Vote for this issue
              Watchers:
              4 Start watching this issue

              Dates

                Created:
                Updated: