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  1. Lustre
  2. LU-10258

lfs mirror command to open fd on component

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: Lustre 2.13.0, Lustre 2.12.3
    • Labels:
    • Rank (Obsolete):
      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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              • Assignee:
                bobijam Zhenyu Xu
                Reporter:
                adilger Andreas Dilger
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                • Created:
                  Updated:
                  Resolved: