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  1. Lustre
  2. LU-2170

osc_extent_merge()) ASSERTION( cur->oe_osclock == victim->oe_osclock) while running racer

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Details

    • Bug
    • Resolution: Fixed
    • Blocker
    • Lustre 2.4.0, Lustre 2.1.4
    • Lustre 2.4.0
    • None
    • 3
    • 5202

    Description

      Hit this assertion running racer in a loop in a single node setup:

      [ 8788.630974] LustreError: 4352:0:(vvp_io.c:1038:vvp_io_commit_write()) Skipped 833 previous similar messages
      [ 8834.780249] LustreError: 22605:0:(osc_cache.c:506:osc_extent_merge()) ASSERTION( cur->oe_osclock == victim->oe_osclock ) failed: 
      [ 8834.780830] LustreError: 22605:0:(osc_cache.c:506:osc_extent_merge()) LBUG
      [ 8834.781139] Pid: 22605, comm: cat
      [ 8834.781364] 
      [ 8834.781364] Call Trace:
      [ 8834.781773]  [<ffffffffa0c9e915>] libcfs_debug_dumpstack+0x55/0x80 [libcfs]
      [ 8834.782075]  [<ffffffffa0c9ef27>] lbug_with_loc+0x47/0xb0 [libcfs]
      [ 8834.782366]  [<ffffffffa04ce847>] osc_extent_merge+0x697/0x6a0 [osc]
      [ 8834.782657]  [<ffffffff81112df1>] ? generic_file_buffered_write+0x1f1/0x300
      [ 8834.782947]  [<ffffffff8106fea7>] ? current_fs_time+0x27/0x30
      [ 8834.783209]  [<ffffffff81051f73>] ? __wake_up+0x53/0x70
      [ 8834.783474]  [<ffffffffa04d601c>] osc_extent_release+0xfc/0x3e0 [osc]
      [ 8834.783782]  [<ffffffffa059a610>] ? lov_io_end_wrapper+0x0/0x100 [lov]
      [ 8834.784070]  [<ffffffffa04c7ddf>] osc_io_end+0x1f/0x30 [osc]
      [ 8834.784371]  [<ffffffffa11dd7a0>] cl_io_end+0x60/0x150 [obdclass]
      [ 8834.784661]  [<ffffffffa059a701>] lov_io_end_wrapper+0xf1/0x100 [lov]
      [ 8834.785159]  [<ffffffffa059a1ae>] lov_io_call+0x8e/0x130 [lov]
      [ 8834.785465]  [<ffffffffa059bdec>] lov_io_end+0x4c/0x110 [lov]
      [ 8834.785758]  [<ffffffffa11dd7a0>] cl_io_end+0x60/0x150 [obdclass]
      [ 8834.786013]  [<ffffffffa11e28d2>] cl_io_loop+0xc2/0x1b0 [obdclass]
      [ 8834.786353]  [<ffffffffa0a7822b>] ll_file_io_generic+0x42b/0x550 [lustre]
      [ 8834.786644]  [<ffffffffa0a7911c>] ll_file_aio_write+0x13c/0x2c0 [lustre]
      [ 8834.811295] Call Trace:
      [ 8834.811521]  [<ffffffff814f75e4>] ? panic+0xa0/0x168
      [ 8834.811788]  [<ffffffffa0c9ef7b>] ? lbug_with_loc+0x9b/0xb0 [libcfs]
      [ 8834.812079]  [<ffffffffa04ce847>] ? osc_extent_merge+0x697/0x6a0 [osc]
      [ 8834.812364]  [<ffffffff81112df1>] ? generic_file_buffered_write+0x1f1/0x300
      [ 8834.812605]  [<ffffffff8106fea7>] ? current_fs_time+0x27/0x30
      [ 8834.812928]  [<ffffffff81051f73>] ? __wake_up+0x53/0x70
      [ 8834.813301]  [<ffffffffa04d601c>] ? osc_extent_release+0xfc/0x3e0 [osc]
      [ 8834.813615]  [<ffffffffa059a610>] ? lov_io_end_wrapper+0x0/0x100 [lov]
      [ 8834.813903]  [<ffffffffa04c7ddf>] ? osc_io_end+0x1f/0x30 [osc]
      [ 8834.814164]  [<ffffffffa11dd7a0>] ? cl_io_end+0x60/0x150 [obdclass]
      [ 8834.816218]  [<ffffffffa059a701>] ? lov_io_end_wrapper+0xf1/0x100 [lov]
      [ 8834.816513]  [<ffffffffa059a1ae>] ? lov_io_call+0x8e/0x130 [lov]
      [ 8834.816814]  [<ffffffffa059bdec>] ? lov_io_end+0x4c/0x110 [lov]
      [ 8834.817184]  [<ffffffffa11dd7a0>] ? cl_io_end+0x60/0x150 [obdclass]
      [ 8834.817462]  [<ffffffffa11e28d2>] ? cl_io_loop+0xc2/0x1b0 [obdclass]
      [ 8834.817769]  [<ffffffffa0a7822b>] ? ll_file_io_generic+0x42b/0x550 [lustre]
      [ 8834.818078]  [<ffffffffa0a7911c>] ? ll_file_aio_write+0x13c/0x2c0 [lustre]
      [ 8834.818385]  [<ffffffffa0a79409>] ? ll_file_write+0x169/0x2a0 [lustre]
      [ 8834.818676]  [<ffffffff8117b2e8>] ? vfs_write+0xb8/0x1a0
      [ 8834.818903]  [<ffffffff810d5192>] ? audit_syscall_entry+0x272/0x2a0
      [ 8834.819185]  [<ffffffff8117bbb1>] ? sys_write+0x51/0x90
      [ 8834.819425]  [<ffffffff8100b0f2>] ? system_call_fastpath+0x16/0x1b
      

      I have a crashdump for this one

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            jay Jinshan Xiong (Inactive)
            green Oleg Drokin
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              Created:
              Updated:
              Resolved: