Hi,<br><br>Did you get to the bottom of this?<br><br>We are having exactly the same problem with our lustre-1.6.6 (rhel4) file systems. Recently it got worst and MDS crashes quite frequently, when we run e2fsck there are errors that are being fixed. However after some time we still are seeing the same errors in the logs about missing objects and files get corrupted (?-----------) Also clients LBUGs quite frequently with this message (osc_request.c:2904:osc_set_data_with_check()) LBUG<br>
This looks like serious lustre problem but so far I didn't find any clues on that even after long search through lustre bugzilla.<br><br>Our MDSs and OSSs are UPSed, RAID is behaving OK, we don't see any errors in the syslog.<br>
<br>I will be grateful for some hints on this one <br><br>Wojciech<br><br><div class="gmail_quote">2009/8/24 rishi pathak <span dir="ltr"><<a href="mailto:mailmaverick666@gmail.com">mailmaverick666@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi,<br><br>Our lustre fs comprises of 15 OST/OSS and 1 MDS with no failover. Client as well as servers run lustre-1.6 and kernel 2.6.9-18. <br>
<br> Doing a ls -ltr for a directory in lustre fs throws following errors (as got from lustre logs) on client<br>
<br>00000008:00020000:0:1251099455.304622:0:724:0:(osc_request.c:2898:osc_set_data_with_check()) ### inconsistent l_ast_data found ns: scratch-OST0005-osc-ffff81201e8dd800 lock: ffff811f9af04<br>000/0xec0d1c36da6992fd lrc: 3/1,0 mode: PR/PR res: 570622/0 rrc: 2 type: EXT [0->18446744073709551615] (req 0->18446744073709551615) flags: 100000 remote: 0xb79b445e381bc9e6 expref: -99 p<br>
id: 22878<br>00000008:00040000:0:1251099455.337868:0:724:0:(osc_request.c:2904:osc_set_data_with_check()) ASSERTION(old_inode->i_state & I_FREEING) failed:Found existing inode ffff811f2cf693b8/1972725<br>44/1895600178 state 0 in lock: setting data to ffff8118ef8ed5f8/207519777/1771835328<br>
00000000:00040000:0:1251099455.360090:0:724:0:(osc_request.c:2904:osc_set_data_with_check()) LBUG<br><br><br>On scratch-OST0005 OST it shows <br><br>Aug 24 10:22:53 yn266 kernel: LustreError: 3023:0:(ldlm_resource.c:851:ldlm_resource_add()) lvbo_init failed for resour<br>
ce 569204: rc -2<br>Aug 24 10:22:53 yn266 kernel: LustreError: 3023:0:(ldlm_resource.c:851:ldlm_resource_add()) Skipped 19 previous similar<br> messages<br>Aug 24 12:40:43 yn266 kernel: LustreError: 2737:0:(ldlm_resource.c:851:ldlm_resource_add()) lvbo_init failed for resour<br>
ce 569195: rc -2<br>Aug 24 12:44:59 yn266 kernel: LustreError: 2835:0:(ldlm_resource.c:851:ldlm_resource_add()) lvbo_init failed for resour<br>ce 569198: rc -2<br><br>These kind of errors we are getting for many clients.<br>
<br>##History ##<br>Prior to thsese occurences, our MDS showed signs of failure in way that cpu load was shooting above 100 (on a quad core quad socket system) and users were complaining about slow storage performance. We took it offline and did fsck on unmounted MDS and OSTs. fsck on OSTs went fine but it showed some errors which were fixed. For data integrity check, mdsdb and ostdb were built and lfsck was run on a client(client was mounted with abort_recov). <br>
<br>lfsck was run in following order:<br>lfsck with no fix - reported dangling inodes and orphaned objects<br>lfsck with -l (backup orphaned objects) <br>lfsck with -d and -c (delete orphaned objects and create missing OST objects referenced by MDS)<br>
<br>After above operations, on clients we were seeing file in red and blinking. Doing a stat came out with an error stating 'no such file or directory'.<br><br>My question is whether the order in which lfsck was run (should lfsck be run multiple times) and the errors we are getting are related or not. <br>
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<br><br><br clear="all"><br>-- <br>Regards--<br>Rishi Pathak<br>National PARAM Supercomputing Facility<br>Center for Development of Advanced Computing(C-DAC)<br>Pune University Campus,Ganesh Khind Road<br>Pune-Maharastra<br>
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<br></blockquote></div><br><br clear="all"><br>-- <br>--<br>Wojciech Turek<br><br>Assistant System Manager<br><br>High Performance Computing Service<br>University of Cambridge<br>Email: <a href="mailto:wjt27@cam.ac.uk">wjt27@cam.ac.uk</a><br>
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