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-396 Lustre <p>Failed assertion when running a 32 node, 64 client (2 per node), file per process IOR.</p> <p>The relevant console output from the client node that crashed is below:</p> <p>2011-06-03 15:23:28 LustreError: 5663:0:(osc_io.c:322:osc_io_commit_write()) ASSERTION(to &gt; 0) failed<br/> 2011-06-03 15:23:28 LustreError: 5663:0:(osc_io.c:322:osc_io_commit_write()) LBUG<br/> 2011-06-03 15:23:28 Pid: 5663, comm: IOR<br/> 2011-06-03 15:23:28 Jun 3 15:23:28 <br/> 2011-06-03 15:23:28 zwicky123 kernelCall Trace:<br/> 2011-06-03 15:23:28 : LustreError: 5 <span class="error">&#91;&lt;ffffffffa034d8b5&gt;&#93;</span> libcfs_debug_dumpstack+0x55/0x80 <span class="error">&#91;libcfs&#93;</span><br/> 2011-06-03 15:23:28 663:0:(osc_io.c: <span class="error">&#91;&lt;ffffffffa034def5&gt;&#93;</span> lbug_with_loc+0x75/0xe0 <span class="error">&#91;libcfs&#93;</span><br/> 2011-06-03 15:23:28 322:osc_io_commi <span class="error">&#91;&lt;ffffffffa0358886&gt;&#93;</span> libcfs_assertion_failed+0x66/0x70 <span class="error">&#91;libcfs&#93;</span><br/> 2011-06-03 15:23:28 t_write()) ASSER <span class="error">&#91;&lt;ffffffffa06e6cb0&gt;&#93;</span> osc_io_commit_write+0x190/0x1a0 <span class="error">&#91;osc&#93;</span><br/> 2011-06-03 15:23:28 TION(to &gt; 0) fai <span class="error">&#91;&lt;ffffffffa07446ae&gt;&#93;</span> ? lov_page_stripe+0x3e/0x150 <span class="error">&#91;lov&#93;</span><br/> 2011-06-03 15:23:28 led<br/> 2011-06-03 15:23:28 Jun 3 15:23 <span class="error">&#91;&lt;ffffffffa048df3f&gt;&#93;</span> cl_io_commit_write+0xaf/0x1f0 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 :28 zwicky123 ke <span class="error">&#91;&lt;ffffffffa07475bd&gt;&#93;</span> ? lov_page_subio+0xad/0x260 <span class="error">&#91;lov&#93;</span><br/> 2011-06-03 15:23:28 rnel: LustreErro <span class="error">&#91;&lt;ffffffffa047fa28&gt;&#93;</span> ? cl_page_export+0x58/0x80 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 r: 5663:0:(osc_i <span class="error">&#91;&lt;ffffffffa0747817&gt;&#93;</span> lov_io_commit_write+0xa7/0x1d0 <span class="error">&#91;lov&#93;</span><br/> 2011-06-03 15:23:28 o.c:322:osc_io_c <span class="error">&#91;&lt;ffffffffa047fd7e&gt;&#93;</span> ? cl_page_at+0xe/0x10 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 ommit_write()) L <span class="error">&#91;&lt;ffffffffa048df3f&gt;&#93;</span> cl_io_commit_write+0xaf/0x1f0 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 BUG<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa047e909&gt;&#93;</span> ? cl_env_get+0x29/0x350 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa07b46dd&gt;&#93;</span> ll_commit_write+0xdd/0x2b0 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff814e4bfc&gt;&#93;</span> ? bad_to_user+0x66/0x612<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa07cd030&gt;&#93;</span> ll_write_end+0x30/0x60 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff8110dc74&gt;&#93;</span> generic_file_buffered_write+0x174/0x2a0<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff8106dd17&gt;&#93;</span> ? current_fs_time+0x27/0x30<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff8110f560&gt;&#93;</span> __generic_file_aio_write+0x250/0x480<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff8110f7ff&gt;&#93;</span> generic_file_aio_write+0x6f/0xe0<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa07dec31&gt;&#93;</span> vvp_io_write_start+0xa1/0x270 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa048b4b8&gt;&#93;</span> cl_io_start+0x68/0x170 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa048f2f0&gt;&#93;</span> cl_io_loop+0x110/0x1d0 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa035d422&gt;&#93;</span> ? cfs_hash_lookup+0x82/0xa0 <span class="error">&#91;libcfs&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa07878e3&gt;&#93;</span> ll_file_io_generic+0x3b3/0x4e0 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa035bf54&gt;&#93;</span> ? cfs_hash_dual_bd_unlock+0x34/0x60 <span class="error">&#91;libcfs&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa047e909&gt;&#93;</span> ? cl_env_get+0x29/0x350 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa078c95f&gt;&#93;</span> ll_file_aio_write+0x13f/0x310 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa047ea7e&gt;&#93;</span> ? cl_env_get+0x19e/0x350 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa047cfdf&gt;&#93;</span> ? cl_env_put+0x1af/0x2e0 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa078cca1&gt;&#93;</span> ll_file_write+0x171/0x310 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff811725b8&gt;&#93;</span> vfs_write+0xb8/0x1a0<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff81172ff1&gt;&#93;</span> sys_write+0x51/0x90<br/> 2011-06-03 15:23:28 322:osc_io_commi <span class="error">&#91;&lt;ffffffffa0358886&gt;&#93;</span> libcfs_assertion_failed+0x66/0x70 <span class="error">&#91;libcfs&#93;</span><br/> 2011-06-03 15:23:28 t_write()) ASSER <span class="error">&#91;&lt;ffffffffa06e6cb0&gt;&#93;</span> osc_io_commit_write+0x190/0x1a0 <span class="error">&#91;osc&#93;</span><br/> 2011-06-03 15:23:28 TION(to &gt; 0) fai <span class="error">&#91;&lt;ffffffffa07446ae&gt;&#93;</span> ? lov_page_stripe+0x3e/0x150 <span class="error">&#91;lov&#93;</span><br/> 2011-06-03 15:23:28 led<br/> 2011-06-03 15:23:28 Jun 3 15:23 <span class="error">&#91;&lt;ffffffffa048df3f&gt;&#93;</span> cl_io_commit_write+0xaf/0x1f0 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 :28 zwicky123 ke <span class="error">&#91;&lt;ffffffffa07475bd&gt;&#93;</span> ? lov_page_subio+0xad/0x260 <span class="error">&#91;lov&#93;</span><br/> 2011-06-03 15:23:28 rnel: LustreErro <span class="error">&#91;&lt;ffffffffa047fa28&gt;&#93;</span> ? cl_page_export+0x58/0x80 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 r: 5663:0:(osc_i <span class="error">&#91;&lt;ffffffffa0747817&gt;&#93;</span> lov_io_commit_write+0xa7/0x1d0 <span class="error">&#91;lov&#93;</span><br/> 2011-06-03 15:23:28 o.c:322:osc_io_c <span class="error">&#91;&lt;ffffffffa047fd7e&gt;&#93;</span> ? cl_page_at+0xe/0x10 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 ommit_write()) L <span class="error">&#91;&lt;ffffffffa048df3f&gt;&#93;</span> cl_io_commit_write+0xaf/0x1f0 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 BUG<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa047e909&gt;&#93;</span> ? cl_env_get+0x29/0x350 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa07b46dd&gt;&#93;</span> ll_commit_write+0xdd/0x2b0 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff814e4bfc&gt;&#93;</span> ? bad_to_user+0x66/0x612<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa07cd030&gt;&#93;</span> ll_write_end+0x30/0x60 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff8110dc74&gt;&#93;</span> generic_file_buffered_write+0x174/0x2a0<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff8106dd17&gt;&#93;</span> ? current_fs_time+0x27/0x30<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff8110f560&gt;&#93;</span> __generic_file_aio_write+0x250/0x480<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff8110f7ff&gt;&#93;</span> generic_file_aio_write+0x6f/0xe0<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa07dec31&gt;&#93;</span> vvp_io_write_start+0xa1/0x270 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa048b4b8&gt;&#93;</span> cl_io_start+0x68/0x170 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa048f2f0&gt;&#93;</span> cl_io_loop+0x110/0x1d0 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa035d422&gt;&#93;</span> ? cfs_hash_lookup+0x82/0xa0 <span class="error">&#91;libcfs&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa07878e3&gt;&#93;</span> ll_file_io_generic+0x3b3/0x4e0 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa035bf54&gt;&#93;</span> ? cfs_hash_dual_bd_unlock+0x34/0x60 <span class="error">&#91;libcfs&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa047e909&gt;&#93;</span> ? cl_env_get+0x29/0x350 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa078c95f&gt;&#93;</span> ll_file_aio_write+0x13f/0x310 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa047ea7e&gt;&#93;</span> ? cl_env_get+0x19e/0x350 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa047cfdf&gt;&#93;</span> ? cl_env_put+0x1af/0x2e0 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa078cca1&gt;&#93;</span> ll_file_write+0x171/0x310 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff811725b8&gt;&#93;</span> vfs_write+0xb8/0x1a0<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff81172ff1&gt;&#93;</span> sys_write+0x51/0x90<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff8100b172&gt;&#93;</span> system_call_fastpath+0x16/0x1b<br/> 2011-06-03 15:23:28 <br/> 2011-06-03 15:23:28 Kernel panic - not syncing: LBUG<br/> 2011-06-03 15:23:28 Pid: 5663, comm: IOR Tainted: G ---------------- T 2.6.32-131.0.15.2chaos.ch5.x86_64 #1<br/> 2011-06-03 15:23:28 Call Trace:<br/> 2011-06-03 15:23:28 Jun 3 15:23:28 <span class="error">&#91;&lt;ffffffff814da3fe&gt;&#93;</span> ? panic+0x78/0x143<br/> 2011-06-03 15:23:28 zwicky123 kernel <span class="error">&#91;&lt;ffffffffa034df4b&gt;&#93;</span> ? lbug_with_loc+0xcb/0xe0 <span class="error">&#91;libcfs&#93;</span><br/> 2011-06-03 15:23:28 : Kernel panic - <span class="error">&#91;&lt;ffffffffa0358886&gt;&#93;</span> ? libcfs_assertion_failed+0x66/0x70 <span class="error">&#91;libcfs&#93;</span><br/> 2011-06-03 15:23:28 not syncing: LB <span class="error">&#91;&lt;ffffffffa06e6cb0&gt;&#93;</span> ? osc_io_commit_write+0x190/0x1a0 <span class="error">&#91;osc&#93;</span><br/> 2011-06-03 15:23:28 UG<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa07446ae&gt;&#93;</span> ? lov_page_stripe+0x3e/0x150 <span class="error">&#91;lov&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa048df3f&gt;&#93;</span> ? cl_io_commit_write+0xaf/0x1f0 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa07475bd&gt;&#93;</span> ? lov_page_subio+0xad/0x260 <span class="error">&#91;lov&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa047fa28&gt;&#93;</span> ? cl_page_export+0x58/0x80 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa0747817&gt;&#93;</span> ? lov_io_commit_write+0xa7/0x1d0 <span class="error">&#91;lov&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa047fd7e&gt;&#93;</span> ? cl_page_at+0xe/0x10 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa048df3f&gt;&#93;</span> ? cl_io_commit_write+0xaf/0x1f0 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa047e909&gt;&#93;</span> ? cl_env_get+0x29/0x350 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa07b46dd&gt;&#93;</span> ? ll_commit_write+0xdd/0x2b0 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff814e4bfc&gt;&#93;</span> ? bad_to_user+0x66/0x612<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa07cd030&gt;&#93;</span> ? ll_write_end+0x30/0x60 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff8110dc74&gt;&#93;</span> ? generic_file_buffered_write+0x174/0x2a0<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff8106dd17&gt;&#93;</span> ? current_fs_time+0x27/0x30<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff8110f560&gt;&#93;</span> ? __generic_file_aio_write+0x250/0x480<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff8110f7ff&gt;&#93;</span> ? generic_file_aio_write+0x6f/0xe0<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa07dec31&gt;&#93;</span> ? vvp_io_write_start+0xa1/0x270 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa048b4b8&gt;&#93;</span> ? cl_io_start+0x68/0x170 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa048f2f0&gt;&#93;</span> ? cl_io_loop+0x110/0x1d0 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa035d422&gt;&#93;</span> ? cfs_hash_lookup+0x82/0xa0 <span class="error">&#91;libcfs&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa07878e3&gt;&#93;</span> ? ll_file_io_generic+0x3b3/0x4e0 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa035bf54&gt;&#93;</span> ? cfs_hash_dual_bd_unlock+0x34/0x60 <span class="error">&#91;libcfs&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa047e909&gt;&#93;</span> ? cl_env_get+0x29/0x350 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa078c95f&gt;&#93;</span> ? ll_file_aio_write+0x13f/0x310 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa047ea7e&gt;&#93;</span> ? cl_env_get+0x19e/0x350 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa047cfdf&gt;&#93;</span> ? cl_env_put+0x1af/0x2e0 <span class="error">&#91;obdclass&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffffa078cca1&gt;&#93;</span> ? ll_file_write+0x171/0x310 <span class="error">&#91;lustre&#93;</span><br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff811725b8&gt;&#93;</span> ? vfs_write+0xb8/0x1a0<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff81172ff1&gt;&#93;</span> ? sys_write+0x51/0x90<br/> 2011-06-03 15:23:28 <span class="error">&#91;&lt;ffffffff8100b172&gt;&#93;</span> ? system_call_fastpath+0x16/0x1b</p> Based on the RHEL6/CHAOS5 distro and 2.0.59 lustre tag LU-396

LustreError: 5663:0:(osc_io.c:322:osc_io_commit_write()) ASSERTION(to > 0) failed

Bug Major Closed Duplicate Jinshan Xiong Prakash Surya Mon, 6 Jun 2011 18:45:29 +0000 Tue, 5 Jun 2012 01:48:48 +0000 Tue, 5 Jun 2012 01:48:42 +0000 Lustre 2.1.0 Lustre 2.1.0 0 8 <p>Jinshan, can you please take a look at this?</p> <p>Hi Jinshan, maybe it's associated with new aops write_begin/end, if so, please check 1.8 also. P.S. recently write_begin/end is enabled by default for RHEL5 kernels too.</p> <p>Hi Lai, Thank you for helping, I'll look into this.</p> <p>I can't figure out this issue. If you can reproduce this problem, can you please run it with debug enabled and post lustre log here? Thanks.</p> <p>Sure, I will try to reproduce the issue.</p> <p>How do I ensure that debug in enabled? By issuing 'echo -1 &gt; /proc/sys/lnet/debug'?</p> <p>And the lustre log can be retrieved by 'lctl dk' right?</p> <p>Yes. lctl dk &gt; log.txt, and send me the log.txt</p> <p>He is not going to be able to log in and run lctl after the kernel panics.</p> <p>I would suggest a debugging patch that prints to the console.</p> <p>Oh, yeah, we have --enable-panic_dumplog set in our build, so if we make sure the path for the dump file is persistent storage, we may get logs that way.</p> <p>Where are the logs being dumped to? Can I query lustre or the system to get the path?</p> <p>echo 0 &gt; /proc/sys/lnet/panic_on_lbug</p> <p>to not let the system hang so you can dump the log.</p> <p>/proc/sys/lnet/debug_path</p> <p>LLNL agreed on the weekly 2.1 call that this should be dropped in priority until it reoccurred.</p> <p>Hi, Jingshan</p> <p>Is the LASSERT(to &gt; 0) in osc_io_commit_write() valid? From the kernel code, seems the 'copied' could be zero when something wrong happened during copy data into page cache, that will result in the to == 0 in osc_io_commit_write(). Did I miss anything?</p> <p>It won't come to this function if to is zero and everything else works fine. For example, in ll_commit_write(), it checks</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre> LASSERT(from &lt;= to); if (from != to) /* handle short write case. */ result = cl_io_commit_write(env, io, page, from, to); </pre> </div></div> <p>I think it would be a good start to revise it LASSERTF(to &gt; 0, "to is %d\n", to) and it will be really helpful to print out as much information as possible.</p> <p>This bug should have been fixed in <a href="https://jira.whamcloud.com/browse/LU-683" title="LBUG: (osc_io.c:336:osc_io_commit_write()) ASSERTION(to &gt; 0) failed" class="issue-link" data-issue-key="LU-683"><del>LU-683</del></a>.</p> <p>duplicate to <a href="https://jira.whamcloud.com/browse/LU-683" title="LBUG: (osc_io.c:336:osc_io_commit_write()) ASSERTION(to &gt; 0) failed" class="issue-link" data-issue-key="LU-683"><del>LU-683</del></a></p> Development Rank 1|hzvsl3: Rank (Obsolete) 8535 Severity