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-5559 Lustre <p>A client reconnected while the server was trying to (re)send it a BL AST:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>Aug 17 23:13:15 lola-10 kernel: Lustre: 5600:0:(client.c:1926:ptlrpc_expire_one_request()) @@@ Request sent has timed out for slow reply: [se nt 1408342388/real 1408342388] req@ffff880583d69800 x1476486655962316/t0(0) o104-&gt;soaked-OST0004@192.168.1.124@o2ib1:15/16 lens 296/224 e 0 to 1 dl 1408342395 ref 1 fl Rpc:X/0/ffffffff rc 0/-1 Aug 17 23:13:15 lola-10 kernel: Lustre: soaked-OST0004: Client c1d7cd54-55f6-0482-0887-cf6de8216f19 (at 192.168.1.124@o2ib1) reconnecting Aug 17 23:13:15 lola-10 kernel: LustreError: 5600:0:(client.c:1097:ptlrpc_import_delay_req()) @@@ req wrong generation: req@ffff880583d69800 x1476486655962316/t0(0) o104-&gt;soaked-OST0004@192.168.1.124@o2ib1:15/16 lens 296/224 e 0 to 1 dl 1408342395 ref 1 fl Rpc:X/0/ffffffff rc 0/-1 Aug 17 23:13:15 lola-10 kernel: LustreError: 5600:0:(ldlm_lockd.c:661:ldlm_handle_ast_error()) ### client (nid 192.168.1.124@o2ib1) returned 0 (rc -5) from blocking AST ns: filter-soaked-OST0004_UUID lock: ffff8805681c20c0/0x4a2dd95cee2a53fc lrc: 1/0,0 mode: --/PR res: [0x7b1a04:0x 0:0x0].0 rrc: 2 type: EXT [0-&gt;18446744073709551615] (req 0-&gt;18446744073709551615) flags: 0x64801000010020 nid: 192.168.1.124@o2ib1 remote: 0x cc587d962f8bc36b expref: 11 pid: 6337 timeout: 4550787123 lvb_type: 1 </pre> </div></div> <p>Although the build has the AST resend patch, the "req wrong generation" error caused the BL AST not to be resent any further. It might not be a good idea to <em>always</em> destroy and recreate the reverse import upon a reconnection.</p> LU-5559

ptlrpc_import_delay_req(): req wrong generation: req@ffff880583d69800 x1476486655962316/t0(0) o104->soaked-OST0004@192.168.1.124@o2ib1:15/16 lens 296/224 e 0 to 1 dl 1408342395 ref 1 fl Rpc:X/0/ffffffff rc 0/-1

Bug Minor Closed Duplicate Li Wei Li Wei Fri, 29 Aug 2014 04:08:34 +0000 Mon, 27 Apr 2015 20:54:59 +0000 Mon, 27 Apr 2015 20:54:59 +0000 Lustre 2.7.0 0 8 <p><a href="http://review.whamcloud.com/11715" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/11715</a> (draft)</p> <p>There is a separate patch <a href="http://review.whamcloud.com/11750" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/11750</a> that is also addressing this same issue.</p> <p>LI Wei, can you test if the 11750 patch resolves the problem that you hit in this bug?</p> <p>Andreas, I have reviewed that patch already. It should be able to fix this problem. However, there are a number of defects and questions there that must be addressed first.</p> Duplicate LU-5569 Development Rank 1|hzwuwv: Rank (Obsolete) 15506 Severity