[LU-19641] lfs getstripe should not give lhm_pattern: hsm for foreign component

• Type: Bug
• Resolution: Fixed
• Priority: Medium
• Fix Version/s: Lustre 2.17.0
• Severity: 3
• Assignee: Aurélien Cedeyn
• Reporter: Aurélien Cedeyn

Description

Here is an output example of a foreign component for PCC :

$ lfs getstripe /lustre/PCC
/lustre/exafs/client/HSM
  lcm_layout_gen:    2
  lcm_mirror_count:  2
  lcm_entry_count:   2
    lcme_id:             65537
    lcme_mirror_id:      1
    lcme_flags:          init
    lcme_extent.e_start: 0
    lcme_extent.e_end:   EOF
      lmm_stripe_count:  1
      lmm_stripe_size:   1048576
      lmm_pattern:       raid0
      lmm_layout_gen:    0
      lmm_stripe_offset: 3
      lmm_objects:
      - 0: \{ l_ost_idx: 3, l_fid: [0x300000401:0xc3:0x0] }

    lcme_id:             131074
    lcme_mirror_id:      2
    lcme_flags:          init
    lcme_extent.e_start: 0
    lcme_extent.e_end:   EOF
      lhm_magic:         0x0BD70BD0
      lhm_pattern:       hsm
      lhm_length:        56
      lhm_type:          0x00000003 (pccro)
      lhm_flags:         exists,archived,pccro,0x109
      lhm_archive_id:    0
      lhm_archive_ver:   0
      lhm_archive_uuid:  ''

Foreign component are used for S3 PCC and POSIX but not HSM.

Since hsm mechanisms are not using foreign component yet, we should have :
lhm_pattern:       foreign