[lustre-discuss] FLR mirroring on 2.12.1-1

John Doe ace629426 at gmail.com
Sun May 19 13:27:27 PDT 2019


After mirroring a file , when one mirror is down, any reads from a client
just hangs. Both server and client are running latest 2.12.1-1. Client
waits for ost idx 1 to come back online.  I am only unmounting ost idx1 not
ost idx 7.

Has anyone tried this feature?

Thanks,
John.

lfs getstripe mirror10
mirror10
  lcm_layout_gen:    5
  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_pool:          01
      lmm_objects:
      - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x280a8:0x0] }

    lcme_id:             131074
    lcme_mirror_id:      2
    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: 7
      lmm_pool:          02
      lmm_objects:
      - 0: { l_ost_idx: 7, l_fid: [0x100070000:0x28066:0x0] }
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