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-6296 Lustre <p>This issue was created by maloo for wangdi &lt;di.wang@intel.com&gt;</p> <p>This issue relates to the following test suite run: <a href="https://testing.hpdd.intel.com/test_sets/4636a65e-bd3a-11e4-8d85-5254006e85c2" class="external-link" target="_blank" rel="nofollow noopener">https://testing.hpdd.intel.com/test_sets/4636a65e-bd3a-11e4-8d85-5254006e85c2</a>.</p> <p>The sub-test test_1 failed with the following error:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>test failed to respond and timed out 19:56:07:Lustre: Evicted from MGS (at 10.1.6.12@tcp) after server handle changed from 0xbe3c45f237bd6bdf to 0xbe3c45f237bd760b 19:56:07:LustreError: 19415:0:(ldlm_lib.c:1963:check_for_recovery_ready()) ASSERTION( clnts &lt;= obd-&gt;obd_max_recoverable_clients ) failed: 19:56:07:LustreError: 19415:0:(ldlm_lib.c:1963:check_for_recovery_ready()) LBUG 19:56:07:Pid: 19415, comm: tgt_recov 19:56:07: 19:56:07:Call Trace: 19:56:07: [&lt;ffffffffa0491895&gt;] libcfs_debug_dumpstack+0x55/0x80 [libcfs] 19:56:07: [&lt;ffffffffa0491e97&gt;] lbug_with_loc+0x47/0xb0 [libcfs] 19:56:07: [&lt;ffffffffa07cf9de&gt;] check_for_recovery_ready+0x17e/0x180 [ptlrpc] 19:56:07: [&lt;ffffffffa07cf860&gt;] ? check_for_recovery_ready+0x0/0x180 [ptlrpc] 19:56:07: [&lt;ffffffffa07d0f16&gt;] target_recovery_overseer+0xd6/0x320 [ptlrpc] 19:56:07: [&lt;ffffffffa07cf4b0&gt;] ? exp_connect_healthy+0x0/0x20 [ptlrpc] 19:56:07: [&lt;ffffffff8109eb00&gt;] ? autoremove_wake_function+0x0/0x40 19:56:07: [&lt;ffffffffa07d8274&gt;] target_recovery_thread+0x5b4/0x1ad0 [ptlrpc] 19:56:07: [&lt;ffffffff81064ba2&gt;] ? default_wake_function+0x12/0x20 19:56:07: [&lt;ffffffffa07d7cc0&gt;] ? target_recovery_thread+0x0/0x1ad0 [ptlrpc] 19:56:07: [&lt;ffffffff8109e66e&gt;] kthread+0x9e/0xc0 19:56:07: [&lt;ffffffff8100c20a&gt;] child_rip+0xa/0x20 19:56:07: [&lt;ffffffff8109e5d0&gt;] ? kthread+0x0/0xc0 19:56:07: [&lt;ffffffff8100c200&gt;] ? child_rip+0x0/0x20 19:56:07: 19:56:07:Kernel panic - not syncing: LBUG </pre> </div></div> <p>Please provide additional information about the failure here.</p> <p>Info required for matching: insanity 1</p> LU-6296

insanity test_1: check_for_recovery_ready()) ASSERTION( clnts <= obd->obd_max_recoverable_clients )

Bug Minor Resolved Fixed Di Wang Maloo dne2 Thu, 26 Feb 2015 00:29:19 +0000 Fri, 9 Sep 2016 20:14:53 +0000 Fri, 27 Feb 2015 05:07:04 +0000 Lustre 2.8.0 Lustre 2.8.0 0 2 <p>It seems obd_max_recoverable_clients should be updated when new MDS-MDS exports are created. This patch should fix the problem</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>diff --git a/lustre/ldlm/ldlm_lib.c b/lustre/ldlm/ldlm_lib.c index f1b8faf..7388e6c 100644 --- a/lustre/ldlm/ldlm_lib.c +++ b/lustre/ldlm/ldlm_lib.c @@ -1172,8 +1172,7 @@ dont_check_exports: &amp;export-&gt;exp_nid_hash); } - if (target-&gt;obd_recovering &amp;&amp; !export-&gt;exp_in_recovery &amp;&amp; !lw_client &amp;&amp; - !new_mds_mds_conn) { + if (target-&gt;obd_recovering &amp;&amp; !export-&gt;exp_in_recovery &amp;&amp; !lw_client) { int has_transno; __u64 transno = data-&gt;ocd_transno; @@ -1206,6 +1205,14 @@ dont_check_exports: atomic_inc(&amp;target-&gt;obd_req_replay_clients); atomic_inc(&amp;target-&gt;obd_lock_replay_clients); + /* Note: MDS-MDS connection is allowed to be connected during + * recovery, no matter if the exports needs to be recoveried. + * Because we need retrieve updates logs from all other MDTs. + * So if the MDS-MDS export is new, obd_max_recoverable_clients + * also needs to be increased to match other recovery checking + * condition. */ + if (new_mds_mds_conn) + target-&gt;obd_max_recoverable_clients++; if (atomic_inc_return(&amp;target-&gt;obd_connected_clients) == target-&gt;obd_max_recoverable_clients) wake_up(&amp;target-&gt;obd_next_transno_waitq); </pre> </div></div> <p>I will add this patch to <a href="http://review.whamcloud.com/#/c/11737/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/#/c/11737/</a></p> Related LU-3534 Development Rank 1|hzx75r: Rank (Obsolete) 17630 Severity