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  1. Lustre
  2. LU-13602

Skip unknown FLR component types

    Details

    • Type: Bug
    • Status: Open
    • Priority: Critical
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: Lustre 2.14.0
    • Labels:
    • Severity:
      3
    • Rank (Obsolete):
      9223372036854775807

      Description

      Currently, in lov_init_composite() will quit with error when reading an unknown LOV pattern:

      			CERROR("%s: unknown composite layout entry type %i\n",
      			       lov2obd(dev->ld_lov)->obd_name,
      			       lsm->lsm_entries[i]->lsme_pattern);
      

      Since FLR will be used for upcoming new features, like PCC-RO, an old client should still be able to read the old format mirrors and ignore the new types of mirrors.

      On the MDS, it should skip mirrors with unknown/foreign component types and mark them stale when selecting which component to use for writes.

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              • Assignee:
                qian_wc Qian Yingjin
                Reporter:
                lixi_wc Li Xi
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                Dates

                • Created:
                  Updated: