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<div class="">Do you have <b class="">flock</b> option in fstab for lustre mount or in command you use to mount lustre on client?</div>
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<div class="">Search for flock on lustre wiki</div>
<div class=""><span class="Apple-tab-span" style="white-space:pre"></span><a href="http://wiki.lustre.org/Mounting_a_Lustre_File_System_on_Client_Nodes" class="">http://wiki.lustre.org/Mounting_a_Lustre_File_System_on_Client_Nodes</a></div>
<div class="">or lustre manual</div>
<div class=""><span class="Apple-tab-span" style="white-space:pre"></span><a href="http://doc.lustre.org/lustre_manual.pdf" class="">http://doc.lustre.org/lustre_manual.pdf</a></div>
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<div class="">Here are links where to start learning about lustre:</div>
<div class="">* <a href="http://lustre.org/getting-started-with-lustre/" class="">
http://lustre.org/getting-started-with-lustre/</a></div>
<div class="">* <a href="http://wiki.lustre.org" class="">http://wiki.lustre.org</a></div>
<div class="">* <a href="https://wiki.hpdd.intel.com" class="">https://wiki.hpdd.intel.com</a></div>
<div class="">* <a href="http://jira.hpdd.intel.com" class="">jira.hpdd.intel.com</a></div>
<div class="">* <a href="http://opensfs.org/lustre/" class="">http://opensfs.org/lustre/</a></div>
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<div class="">Alex.</div>
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<blockquote type="cite" class="">
<div class="">On Feb 15, 2018, at 11:02 AM, Prentice Bisbal <<a href="mailto:pbisbal@pppl.gov" class="">pbisbal@pppl.gov</a>> wrote:</div>
<br class="Apple-interchange-newline">
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<div class="">Hi.<br class="">
<br class="">
I'm an experience HPC system admin, but I know almost nothing about Lustre administration. The system admin who administered our small Lustre filesystem recently retired, and no one has filled that gap yet. A user recently reported they are now getting file-locking
errors from a program they've run repeatedly on Lustre in the past. When the run the same program on an NFS filesystem, the error goes away. I've cut-and-pasted the error messages below.<br class="">
<br class="">
Since I have real experience as a Lustre admin, I turned to google, and it looks like it might be that the file-locking daemon died (if Lustre has a separate file-lock daemon), or somehow file-locking was recently disabled. If that is possible, how do I check
this, and restart or re-enable if necessary? I skimmed the user manual, and could not find anything on either of these issues.<br class="">
<br class="">
Any and all help will be greatly appreciated.<br class="">
<br class="">
Some of the error messages:<br class="">
<br class="">
HDF5-DIAG: Error detected in HDF5 (1.10.0-patch1) MPI-process 9:<br class="">
#000: H5F.c line 579 in H5Fopen(): unable to open file<br class="">
major: File accessibilty<br class="">
minor: Unable to open file<br class="">
#001: H5Fint.c line 1168 in H5F_open(): unable to lock the file or initialize file structure<br class="">
major: File accessibilty<br class="">
minor: Unable to open file<br class="">
#002: H5FD.c line 1821 in H5FD_lock(): driver lock request failed<br class="">
major: Virtual File Layer<br class="">
minor: Can't update object<br class="">
#003: H5FDsec2.c line 939 in H5FD_sec2_lock(): unable to flock file, errno = 38, error message = 'Function not implemented'<br class="">
major: File accessibilty<br class="">
minor: Bad file ID accessed<br class="">
Error: couldn't open file HDF5-DIAG: Error detected in HDF5 (1.10.0-patch1) MPI-process 13:<br class="">
#000: H5F.c line 579 in H5Fopen(): unable to open file<br class="">
major: File accessibilty<br class="">
minor: Unable to open file<br class="">
#001: H5Fint.c line 1168 in H5F_open(): unable to lock the file or initialize file structure<br class="">
major: File accessibilty<br class="">
minor: Unable to open file<br class="">
#002: H5FD.c line 1821 in H5FD_lock(): driver lock request failed<br class="">
major: Virtual File Layer<br class="">
minor: Can't update object<br class="">
#003: H5FDsec2.c line 939 in H5FD_sec2_lock(): unable to flock file, errno = 38, error message = 'Function not implemented'<br class="">
major: File accessibilty<br class="">
minor: Bad file ID accessed<br class="">
<br class="">
-- <br class="">
Prentice<br class="">
<br class="">
_______________________________________________<br class="">
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<a href="mailto:lustre-discuss@lists.lustre.org" class="">lustre-discuss@lists.lustre.org</a><br class="">
http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org<br class="">
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</blockquote>
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