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-5656 Lustre <p>Lately I seem to be having ocasional unmount hangs after running racer.<br/> The umount is stuck trying to clean inode in cl_inode_fini()-&gt;cl_object_put_last() where there is an infinite while(1) loop:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[46320.673601] umount D 0000000000000001 2528 6615 6608 0x00000000 [46320.673601] ffff880043e8bc88 0000000000000086 0000000000000000 ffffffff00000 00e [46320.673601] 0000000000000000 ffff88000000000e 0000000000000000 ffff880043e95fb8 [46320.673601] ffff88008adeaa78 ffff880043e8bfd8 000000000000fbe8 ffff88008adeaa78 [46320.673601] Call Trace: [46320.673601] [&lt;ffffffffa0c55e01&gt;] cl_inode_fini+0x1f1/0x270 [lustre] [46320.673601] [&lt;ffffffff8105de00&gt;] ? default_wake_function+0x0/0x20 [46320.673601] [&lt;ffffffffa0c18ad7&gt;] ll_clear_inode+0x247/0x970 [lustre] [46320.673601] [&lt;ffffffff811a648a&gt;] clear_inode+0xca/0x160 [46320.673601] [&lt;ffffffff811a6558&gt;] dispose_list+0x38/0x120 [46320.673601] [&lt;ffffffff811a6a0e&gt;] invalidate_inodes+0xee/0x180 [46320.673601] [&lt;ffffffff8118bafc&gt;] generic_shutdown_super+0x4c/0xe0 [46320.673601] [&lt;ffffffff8118bbf6&gt;] kill_anon_super+0x16/0x60 [46320.673601] [&lt;ffffffffa0e0684a&gt;] lustre_kill_super+0x4a/0x60 [obdclass] [46320.673601] [&lt;ffffffff8118c397&gt;] deactivate_super+0x57/0x80 [46320.673601] [&lt;ffffffff811ab40f&gt;] mntput_no_expire+0xbf/0x110 [46320.673601] [&lt;ffffffff811abf7b&gt;] sys_umount+0x7b/0x3a0 [46320.673601] [&lt;ffffffff8108820d&gt;] ? sigprocmask+0x8d/0x110 [46320.673601] [&lt;ffffffff8100b0b2&gt;] system_call_fastpath+0x16/0x1b </pre> </div></div> LU-5656

umount hang after racer

Bug Major Resolved Fixed Bruno Faccini Oleg Drokin Wed, 24 Sep 2014 13:56:43 +0000 Thu, 4 Feb 2016 13:00:15 +0000 Wed, 1 Oct 2014 16:03:19 +0000 Lustre 2.7.0 Lustre 2.7.0 0 3 <p>Fixed by reverting patch 5c4f68be5772b200ee2b728fd121c62ea099d684 from <a href="http://review.whamcloud.com/11716" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/11716</a></p> <p>Just got the same hang upon Client umount, this was during auto-tests when running replay-single/test_0c for Gerrit-change #12456 patch-set #7. But I have checked and this has occured even with the reversion of #11716 (commit 150246e73c925d628ce9cbbd8184c0b0eefc9a16) by commit 5c4f68be5772b200ee2b728fd121c62ea099d684 ...<br/> Auto-test failure can be found at <a href="https://testing.hpdd.intel.com/test_sets/04d38dcc-8418-11e4-8915-5254006e85c2" class="external-link" target="_blank" rel="nofollow noopener">https://testing.hpdd.intel.com/test_sets/04d38dcc-8418-11e4-8915-5254006e85c2</a>.</p> Development Rank 1|hzwwzr: Rank (Obsolete) 15854 Severity