[LU-13404] ‘lfs mirror read’ does not write to output file

Tue, 14 Apr 2020 14:27:18 +0000

‘lfs mirror read’ has a -o/--outfile option that you can specify the output file that the contents of the mirror will be saved to. Yet, we get an error when we try to save a mirror to an output file.

# lfs getstripe /mnt/lustre/test-framework.sh
/mnt/lustre/test-framework.sh
  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: 1
      lmm_objects:
      - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x3:0x0] }

    lcme_id:             131073
    lcme_mirror_id:      2
    lcme_flags:          init
    lcme_extent.e_start: 0
    lcme_extent.e_end:   EOF
      lmm_stripe_count:  2
      lmm_stripe_size:   1048576
      lmm_pattern:       raid0
      lmm_layout_gen:    0
      lmm_stripe_offset: 1
      lmm_objects:
      - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x4:0x0] }
      - 1: { l_ost_idx: 0, l_fid: [0x100000000:0x3:0x0] }

[root@trevis-62vm1 tests]# lfs mirror read -N 2 -o /mnt/lustre/mirror-tf /mnt/lustre/test-framework.sh
lfs mirror: cannot stat file '/mnt/lustre/mirror-tf': No such file or directory

Whamcloud Community JIRA

[LU-13404] ‘lfs mirror read’ does not write to output file