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  1. Lustre
  2. LU-3602

make utility functions availalbe to user space

Details

    • Improvement
    • Resolution: Won't Do
    • Minor
    • None
    • None
    • 9143

    Description

      In LU-2973 we decided that user-space callers of lgetxattr() should be responsible for swabbing the value of "lustre.lov" as needed. This issue is to discuss how best to make utility functions (for swabbing, comparing, etc. of data structures like lov_user_md and lu_fid) available to both kernel and user space.

      The swabbing functions are implemented in ptlrpc/pack_generic.c with extern declarations in lustre_idl.h. While these are compiled in a user-space library if liblustre is enabled, it would be nice to make them available in a generic way for liblustreapi (i.e. for LU-2182). That is, liblustre should not be a dependency for liblustreapi. Perhaps such utility functions can be refactored into a generic library that can be linked to from kernel and user code.

      Attachments

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-2182 Add llapi_file_get_layout() function in liblustreapi

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

          Bug - A problem which impairs or prevents the functions of the product. LU-2973 lov_mds_md not swabbed in ll_getxattr

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

          Improvement - An improvement or enhancement to an existing feature or task. LU-5969 Create an LGPL version of liblustreapi

          • Major - Major loss of function.
          • Resolved

          Activity

            [LU-3602] make utility functions availalbe to user space
            adilger Andreas Dilger made changes -
            Resolution New: Won't Do [ 10200 ]
            Status Original: In Progress [ 3 ] New: Resolved [ 5 ]
            simmonsja James A Simmons added a comment -

            Is this still needed?

            simmonsja James A Simmons added a comment - Is this still needed?
            adilger Andreas Dilger made changes -
            Labels Original: llnl New: llapi llnl usability
            pjones Peter Jones made changes -
            End date New: 10/Aug/15
            Start date New: 17/Jul/13
            pjones Peter Jones made changes -
            Fix Version/s Original: Lustre 2.8.0 [ 11113 ]
            adilger Andreas Dilger added a comment -

            This should be considered for LU-5969.

            adilger Andreas Dilger added a comment - This should be considered for LU-5969 .
            adilger Andreas Dilger made changes -
            Link New: This issue is related to LU-5969 [ LU-5969 ]
            jlevi Jodi Levi (Inactive) made changes -
            Fix Version/s New: Lustre 2.8.0 [ 11113 ]
            Fix Version/s Original: Lustre 2.7.0 [ 10631 ]
            morrone Christopher Morrone (Inactive) made changes -
            Labels New: llnl
            jlevi Jodi Levi (Inactive) made changes -
            Fix Version/s New: Lustre 2.7.0 [ 10631 ]
            Fix Version/s Original: Lustre 2.6.0 [ 10595 ]

            People

              laisiyao Lai Siyao
              nedbass Ned Bass (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: