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  1. Lustre
  2. LU-10258

lfs mirror command to read/write specific mirror copy

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    • 9223372036854775807

    Description

      It would be useful to add an "lfs open [--ifcomp=<component_id>] [--ofcomp=<component_id>] <command>" that opens the stdin and/or stdout with the specified component ID values, so that e.g. "dd" could be used as a resync tool for stale components, or other arbitrary commands (e.g. MPI file utils for parallel resync, HSM tools for archive handling, etc).

      Also useful would be to open a specific mirror number for whole-file access, instead of just a single component. That would be something like "--ifrepl=" and "--ofrepl=" options.

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          is related to

          Technical task - A technical task. LU-10177 DoM: manual migration MDT-OST

          • Major - Major loss of function.
          • Resolved

          Technical task - A technical task. LU-11421 DoM: manual migration OST-MDT, MDT-MDT

          • Major - Major loss of function.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. LU-13831 lfs mirror command to open a specific mirror copy

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

          Bug - A problem which impairs or prevents the functions of the product. LU-5170 lfs usability

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

          New Feature - A new feature of the product, which has yet to be developed. LU-9771 FLR1: Landing tickets for File Level Redundancy Phase 1

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

          Improvement - An improvement or enhancement to an existing feature or task. LU-11245 add 'lfs mirror dump' to dump a mirror content

          • Major - Major loss of function.
          • Resolved
          mentioned in

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          Activity

            [LU-10258] lfs mirror command to read/write specific mirror copy
            adilger Andreas Dilger made changes -
            Link New: This issue is related to EX-5364 [ EX-5364 ]
            adilger Andreas Dilger made changes -
            Link New: This issue is related to LU-13831 [ LU-13831 ]
            adilger Andreas Dilger made changes -
            Summary Original: lfs mirror command to open fd on component New: lfs mirror command to read/write specific mirror copy
            pjones Peter Jones made changes -
            Issue Type Original: New Feature [ 2 ] New: Improvement [ 4 ]
            pjones Peter Jones made changes -
            Fix Version/s New: Lustre 2.12.3 [ 14418 ]
            pjones Peter Jones made changes -
            Fix Version/s New: Lustre 2.13.0 [ 14290 ]
            Resolution New: Fixed [ 1 ]
            Status Original: In Progress [ 3 ] New: Resolved [ 5 ]
            jamesanunez James Nunez (Inactive) made changes -
            Remote Link New: This issue links to "Page (Whamcloud Community Wiki)" [ 23580 ]
            adilger Andreas Dilger made changes -
            Link New: This issue is related to LU-11421 [ LU-11421 ]
            yujian Jian Yu made changes -
            Assignee Original: Jian Yu [ yujian ] New: Zhenyu Xu [ bobijam ]
            adilger Andreas Dilger made changes -
            Link New: This issue is related to LU-11245 [ LU-11245 ]

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              bobijam Zhenyu Xu
              adilger Andreas Dilger
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              Dates

                Created:
                Updated:
                Resolved: