[LU-14592] lfsck errors: Unsupported LOV EA magic 198708176

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.15.0
• Severity: 3
• Assignee: Vitaly Fertman
• Reporter: Vitaly Fertman

Description

lfsck readonly mode reported 262,221 of the following type of errors:

00100000:10000000:25.0:1608214932.724228:0:82239:0:(lfsck_layout.c:351:lfsck_layout_verify_header_v1v3()) Unsupported LOV EA magic 198708176 for the file [0x200095ec5:0x13886:0x0]

The file uses SEL:

walleye-p6:~ # lfs getstripe /lus/kjcf04/disk/ostest.vers/alsorun.20201209124303.2692.walleye-p6/CL_IOR_dom_sel_8s_dirio_wr_4iter_n32x4_8m.1.tK9YyC.1607539408/CL_IOR_dom_sel_8s_dirio_wr_4iter_n32x4_8m/30/IORfile_8m.00000030
/lus/kjcf04/disk/ostest.vers/alsorun.20201209124303.2692.walleye-p6/CL_IOR_dom_sel_8s_dirio_wr_4iter_n32x4_8m.1.tK9YyC.1607539408/CL_IOR_dom_sel_8s_dirio_wr_4iter_n32x4_8m/30/IORfile_8m.00000030
  lcm_layout_gen:    11
  lcm_mirror_count:  1
  lcm_entry_count:   4
    lcme_id:             1
    lcme_mirror_id:      0
    lcme_flags:          init
    lcme_extent.e_start: 0
    lcme_extent.e_end:   524288
      lmm_stripe_count:  0
      lmm_stripe_size:   524288
      lmm_pattern:       mdt
      lmm_layout_gen:    0
      lmm_stripe_offset: 0
      lmm_pool:          disk

    lcme_id:             2
    lcme_mirror_id:      0
    lcme_flags:          init
    lcme_extent.e_start: 524288
    lcme_extent.e_end:   536870912
      lmm_stripe_count:  2
      lmm_stripe_size:   524288
      lmm_pattern:       raid0
      lmm_layout_gen:    0
      lmm_stripe_offset: 3
      lmm_pool:          disk
      lmm_objects:
      - 0: { l_ost_idx: 3, l_fid: [0x100030000:0xb6726877:0x0] }
      - 1: { l_ost_idx: 0, l_fid: [0x100000000:0xbcbf7a77:0x0] }

    lcme_id:             4
    lcme_mirror_id:      0
    lcme_flags:          init
    lcme_extent.e_start: 536870912
    lcme_extent.e_end:   1073741824
      lmm_stripe_count:  2
      lmm_stripe_size:   524288
      lmm_pattern:       raid0
      lmm_layout_gen:    0
      lmm_stripe_offset: 2
      lmm_pool:          disk
      lmm_objects:
      - 0: { l_ost_idx: 2, l_fid: [0x100020000:0xb65a82bf:0x0] }
      - 1: { l_ost_idx: 1, l_fid: [0x100010000:0xbcc07258:0x0] }

    lcme_id:             5
    lcme_mirror_id:      0
    lcme_flags:          extension
    lcme_extent.e_start: 1073741824
    lcme_extent.e_end:   EOF
      lmm_stripe_count:  0
      lmm_extension_size: 268435456
      lmm_pattern:       raid0
      lmm_layout_gen:    0
      lmm_stripe_offset: -1
      lmm_pool:          disk