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/LUDOC-225 Lustre Documentation <p>It looks like we may have a deadlock in the statahead client code. Running lustre 2.4.0-19chaos (see <a href="http://github.com/chaos/lustre" class="external-link" target="_blank" rel="nofollow noopener">http://github.com/chaos/lustre</a>) we have some clients hanging on close() like so:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>PID: 67983 TASK: ffff8804448d0080 CPU: 10 COMMAND: "java" #0 [ffff88041b969d08] schedule at ffffffff815109b2 #1 [ffff88041b969dd0] cfs_waitq_wait+0xe at ffffffffa043577e [libcfs] #2 [ffff88041b969de0] ll_stop_statahead+0x1b8 at ffffffffa0aad1b8 [lustre] #3 [ffff88041b969e60] ll_file_release+0x2d8 at ffffffffa0a6b698 [lustre] #4 [ffff88041b969ea0] ll_dir_release+0xdb at ffffffffa0a52d5b [lustre] #5 [ffff88041b969ec0] __fput+0x108 at ffffffff81183898 #6 [ffff88041b969f10] fput+0x25 at ffffffff811839e5 #7 [ffff88041b969f20] filp_close+0x5d at ffffffff8117eddd #8 [ffff88041b969f50] sys_close+0xa5 at ffffffff8117eeb5 #9 [ffff88041b969f80] system_call_fastpath+0x16 at ffffffff8100b0b2 RIP: 00002aaaaacdb5ad RSP: 00002aaab505f3f8 RFLAGS: 00010206 RAX: 0000000000000003 RBX: ffffffff8100b0b2 RCX: 000000000000003a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000131 RBP: 0000000000000131 R8: 00002aaaab586580 R9: 00002aaaab33a780 R10: 0000000000000131 R11: 0000000000000293 R12: 0000000000000002 R13: 00002aaabc013df0 R14: 00002aaabc107700 R15: 00002aaabc013df0 ORIG_RAX: 0000000000000003 CS: 0033 SS: 002b PID: 67984 TASK: ffff880639bcb500 CPU: 10 COMMAND: "ll_sa_66672" #0 [ffff88065abc9d40] schedule at ffffffff815109b2 #1 [ffff88065abc9e08] cfs_waitq_wait+0xe at ffffffffa043577e [libcfs] #2 [ffff88065abc9e18] ll_statahead_thread+0x59e at ffffffffa0ab288e [lustre] #3 [ffff88065abc9f48] child_rip+0xa at ffffffff8100c10a PID: 67985 TASK: ffff880d2faba080 CPU: 11 COMMAND: "ll_agl_66672" #0 [ffff8809d06fddc0] schedule at ffffffff815109b2 #1 [ffff8809d06fde88] cfs_waitq_wait+0xe at ffffffffa043577e [libcfs] #2 [ffff8809d06fde98] ll_agl_thread+0x44a at ffffffffa0aadbba [lustre] #3 [ffff8809d06fdf48] child_rip+0xa at ffffffff8100c10a </pre> </div></div> LUDOC-225

Possible ll_stop_statahead deadlock

Bug Major Resolved Not a Bug Jodi Levi Christopher Morrone Thu, 13 Feb 2014 00:10:36 +0000 Fri, 14 Feb 2014 12:45:53 +0000 Fri, 14 Feb 2014 12:45:53 +0000 0 2 <p>Whoops, wrong project. You can close this, I'll open the LU ticket.</p> <p>ok Chris. In future if this happens then let us know and I can move tickets between projects.</p> Development Rank 1|hzwf0f: Rank (Obsolete) 12652 Severity