Uploaded image for project: 'Lustre'
  1. Lustre
  2. LU-16603

OBD_BRW_COMPRESSED flag

    XMLWordPrintable

Details

    • Improvement
    • Resolution: Fixed
    • Minor
    • Lustre 2.16.0
    • None
    • None
    • 9223372036854775807

    Description

      Add an OBD_BRW_COMPRESSED flag to OST_WRITE to hint server data is compressed. This allows the block allocator (mballoc in ldiskfs) to avoid keeping holes in the on-disk block allocation when it gets "sparse" writes from the client due to compressed niobufs being sent.

      Attachments

        Issue Links

          is related to

          Improvement - An improvement or enhancement to an existing feature or task. LU-16920 CSDC_v2: store and report compression flag on OST and MDT objects

          • Major - Major loss of function.
          • Open

          Activity

            People

              bzzz Alex Zhuravlev
              bzzz Alex Zhuravlev
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: