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<p>I'm using CentOS 6, too. <br>
</p>
<pre class="moz-signature" cols="72">Prentice</pre>
<div class="moz-cite-prefix">On 02/15/2018 05:17 PM, E.S. Rosenberg
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CA+K1OzQFRcUrY=QQSnbt4EwV+O8+UdAz65a-pqFsfa=p6vd4Qg@mail.gmail.com">
<div dir="ltr"><br>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri, Feb 16, 2018 at 12:00 AM,
Colin Faber <span dir="ltr"><<a
href="mailto:cfaber@gmail.com" target="_blank"
moz-do-not-send="true">cfaber@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="auto">If the mount on the users clients had the
various options enabled, and those aren't present in
fstab, you'd end up with such behavior. Also 2.8? Can
you upgrade to 2.10 LTS??</div>
</blockquote>
<div>Depending on when they installed their system that may
not be such a 'small' change, our 2.8 is running on CentOS
6.8 so an upgrade to 2.10 requires us to also upgrade the
OS from 6.x to 7.x and though I very much want to do that
that is a more intensive process that so far I have not
had the time for and I can imagine others have the same
issue.<br>
</div>
<div>Regards,<br>
</div>
<div>Eli<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="auto">
<div dir="auto"><br>
</div>
<div dir="auto"><br>
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<div class="HOEnZb">
<div class="h5">
<div class="gmail_extra"><br>
<div class="gmail_quote">On Feb 15, 2018 1:06 PM,
"Prentice Bisbal" <<a
href="mailto:pbisbal@pppl.gov" target="_blank"
moz-do-not-send="true">pbisbal@pppl.gov</a>>
wrote:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0 0
0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<p>No. Several others have asked me the same
thing, so that seems like it might be the
issue. The only problem with that solution
is that the user claimed his program worked
just fine up until a couple of weeks ago, so
if that is the issue, I'll still be
scratching my head trying to figure out
how/what changed</p>
<p><br>
</p>
<pre class="m_-569576501198410965m_-1995677135630938282moz-signature" cols="72">Prentice </pre>
<div
class="m_-569576501198410965m_-1995677135630938282moz-cite-prefix">On
02/15/2018 12:31 PM, Alexander I Kulyavtsev
wrote:<br>
</div>
<blockquote type="cite">
<div>Do you have <b>flock</b> option in
fstab for lustre mount or in command you
use to mount lustre on client?</div>
<div><br>
</div>
<div>Search for flock on lustre wiki</div>
<div><span class="m_-569576501198410965m_-1995677135630938282Apple-tab-span" style="white-space:pre-wrap"></span><a
href="http://wiki.lustre.org/Mounting_a_Lustre_File_System_on_Client_Nodes"
target="_blank" moz-do-not-send="true">http://wiki.lustre.org/Mountin<wbr>g_a_Lustre_File_System_on_<wbr>Client_Nodes</a></div>
<div>or lustre manual</div>
<div><span class="m_-569576501198410965m_-1995677135630938282Apple-tab-span" style="white-space:pre-wrap"></span><a
href="http://doc.lustre.org/lustre_manual.pdf" target="_blank"
moz-do-not-send="true">http://doc.lustre.org/lustre_m<wbr>anual.pdf</a></div>
<div><br>
</div>
<div>Here are links where to start learning
about lustre:</div>
<div>* <a
href="http://lustre.org/getting-started-with-lustre/"
target="_blank" moz-do-not-send="true">
http://lustre.org/getting-star<wbr>ted-with-lustre/</a></div>
<div>* <a href="http://wiki.lustre.org"
target="_blank" moz-do-not-send="true">http://wiki.lustre.org</a></div>
<div>* <a
href="https://wiki.hpdd.intel.com"
target="_blank" moz-do-not-send="true">https://wiki.hpdd.intel.com</a></div>
<div>* <a href="http://jira.hpdd.intel.com"
target="_blank" moz-do-not-send="true">jira.hpdd.intel.com</a></div>
<div>* <a href="http://opensfs.org/lustre/"
target="_blank" moz-do-not-send="true">http://opensfs.org/lustre/</a></div>
<div><br>
</div>
<div>Alex.</div>
<br>
<div>
<blockquote type="cite">
<div>On Feb 15, 2018, at 11:02 AM,
Prentice Bisbal <<a
href="mailto:pbisbal@pppl.gov"
target="_blank"
moz-do-not-send="true">pbisbal@pppl.gov</a>>
wrote:</div>
<br
class="m_-569576501198410965m_-1995677135630938282Apple-interchange-newline">
<div>
<div>Hi.<br>
<br>
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>
<br>
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>
<br>
Any and all help will be greatly
appreciated.<br>
<br>
Some of the error messages:<br>
<br>
HDF5-DIAG: Error detected in HDF5
(1.10.0-patch1) MPI-process 9:<br>
#000: H5F.c line 579 in H5Fopen():
unable to open file<br>
major: File accessibilty<br>
minor: Unable to open file<br>
#001: H5Fint.c line 1168 in
H5F_open(): unable to lock the file
or initialize file structure<br>
major: File accessibilty<br>
minor: Unable to open file<br>
#002: H5FD.c line 1821 in
H5FD_lock(): driver lock request
failed<br>
major: Virtual File Layer<br>
minor: Can't update object<br>
#003: H5FDsec2.c line 939 in
H5FD_sec2_lock(): unable to flock
file, errno = 38, error message =
'Function not implemented'<br>
major: File accessibilty<br>
minor: Bad file ID accessed<br>
Error: couldn't open file HDF5-DIAG:
Error detected in HDF5
(1.10.0-patch1) MPI-process 13:<br>
#000: H5F.c line 579 in H5Fopen():
unable to open file<br>
major: File accessibilty<br>
minor: Unable to open file<br>
#001: H5Fint.c line 1168 in
H5F_open(): unable to lock the file
or initialize file structure<br>
major: File accessibilty<br>
minor: Unable to open file<br>
#002: H5FD.c line 1821 in
H5FD_lock(): driver lock request
failed<br>
major: Virtual File Layer<br>
minor: Can't update object<br>
#003: H5FDsec2.c line 939 in
H5FD_sec2_lock(): unable to flock
file, errno = 38, error message =
'Function not implemented'<br>
major: File accessibilty<br>
minor: Bad file ID accessed<br>
<br>
-- <br>
Prentice<br>
<br>
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