https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-2317 Lustre <p>Hit this assertion below on the MDS. Was running "/etc/init.d/lustre stop" on the MDS while the OSSs had just been rebooted and going through recovery.</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>LustreError: 32636:0:(ldlm_lockd.c:684:ldlm_handle_ast_error()) ### client (nid 172.20.2.191@o2ib500) returned 0 from blocking AST ns: MGS lock: ffff880fc3ef0080/0x2fff3cc7fa507817 lrc: 1/0,0 mode: --/CR res: 128038972191596/0 rrc: 504 type: PLN flags: 0x200000a0 nid: 172.20.2.191@o2ib500 remote: 0x561a2e8961e1bd9c expref: 7 pid: 32636 timeout 4295211050 LustreError: 32636:0:(ldlm_lockd.c:684:ldlm_handle_ast_error()) ### client (nid 172.20.2.191@o2ib500) returned 0 from blocking AST ns: MGS lock: ffff880fc89f4580/0x2fff3cc7fa507810 lrc: 1/0,0 mode: --/CR res: 128038972191596/0 rrc: 5 type: PLN flags: 0x200000a0 nid: 172.20.2.191@o2ib500 remote: 0x561a2e8961e1b871 expref: 4 pid: 32636 timeout 4295211050 LustreError: 32636:0:(ldlm_lock.c:853:ldlm_lock_decref_and_cancel()) ASSERTION( lock != ((void *)0) ) failed: LustreError: 32636:0:(ldlm_lock.c:853:ldlm_lock_decref_and_cancel()) LBUG </pre> </div></div> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre> crash&gt; bt PID: 32636 TASK: ffff880fd486a080 CPU: 2 COMMAND: "ll_mgs_0006" #0 [ffff880fc2929918] machine_kexec at ffffffff8103216b #1 [ffff880fc2929978] crash_kexec at ffffffff810b8d12 #2 [ffff880fc2929a48] panic at ffffffff814eea99 #3 [ffff880fc2929ac8] lbug_with_loc at ffffffffa05b8fcb [libcfs] #4 [ffff880fc2929ae8] ldlm_lock_decref_and_cancel at ffffffffa08b64ac [ptlrpc] #5 [ffff880fc2929b08] mgs_completion_ast_config at ffffffffa0e171b2 [mgs] #6 [ffff880fc2929b58] ldlm_cli_enqueue_local at ffffffffa08d15c6 [ptlrpc] #7 [ffff880fc2929be8] mgs_revoke_lock at ffffffffa0e16db3 [mgs] #8 [ffff880fc2929c88] mgs_handle_target_reg at ffffffffa0e17a98 [mgs] #9 [ffff880fc2929d08] mgs_handle at ffffffffa0e19d6b [mgs] #10 [ffff880fc2929d98] ptlrpc_server_handle_request at ffffffffa090a8bc [ptlrpc] #11 [ffff880fc2929e98] ptlrpc_main at ffffffffa090beac [ptlrpc] #12 [ffff880fc2929f48] kernel_thread at ffffffff8100c14a </pre> </div></div> LU-2317

Assertion triggered in ldlm_lock_decref_and_cancel

Bug Minor Closed Fixed Alex Zhuravlev Prakash Surya patch Tue, 13 Nov 2012 13:08:24 +0000 Mon, 22 Apr 2013 15:33:19 +0000 Mon, 22 Apr 2013 15:33:19 +0000 Lustre 2.4.0 Lustre 2.4.0 0 5 <p>Alex </p> <p>Can you please triage and assign this one?</p> <p>Thanks</p> <p>Peter</p> <p>Bumped the priority down to "Minor" since use case probably doesn't occur in "normal" usage.</p> <p><a href="http://review.whamcloud.com/4744" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/4744</a></p> <p>Xyratex-bug-id: MRP-792</p> <p>With Change, 4744 landed, can this ticket be closed?</p> <p>Jodi, I haven't hit this in some time so I think it's safe to close with that patch landing.</p> Development Rank 1|hzvc5j: Rank (Obsolete) 5539 Severity