<div dir="ltr">Hi Phil,<div><br></div><div>I think you may want to call lctl set_param with the -P argument to permanently set it.</div><div><br></div><div>-cf</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Jun 18, 2016 at 3:36 AM, Dilger, Andreas <span dir="ltr"><<a href="mailto:andreas.dilger@intel.com" target="_blank">andreas.dilger@intel.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">You can use "lctl set_param llite.*.create_no_open_optimization=0" so<br>
that it doesn't matter what "hex_number" is.<br>
<br>
Cheers, Andreas<br>
--<br>
Andreas Dilger<br>
<br>
Lustre Principal Architect<br>
Intel High Performance Data Division<br>
<span class=""><br>
On 2016/06/17, 03:08, "lustre-discuss on behalf of Phill Harvey-Smith" <<a href="mailto:lustre-discuss-bounces@lists.lustre.org">lustre-discuss-bounces@lists.lustre.org</a> on behalf of <a href="mailto:p.harvey-smith@warwick.ac.uk">p.harvey-smith@warwick.ac.uk</a>> wrote:<br>
<br>
Hi all,<br>
<br>
After working through the "Odd behavior with matlab" theread and<br>
applying the patch I can do :<br>
<br>
lctl set_param llite.home-<hex_number>.create_no_open_optimization=0<br>
<br>
Which will allow matlab to run.<br>
<br>
The problem is that this setting needs to be set every time the system<br>
is booted, and also the <hex_number> bit seems to change on every<br>
re-boot too.<br>
<br>
So couple of questions....<br>
<br>
1) Is it possible to make the create_no_open_optimization=0 permanent<br>
for the home filesystem?<br>
<br>
2) Failing that is there a way to run a simple script that will manually<br>
do the lctl set_param on every boot after the lustre filesystem is<br>
mounted (I have a script that will extract the correct<br>
home- bit from /proc/fs/lustre/llite).<br>
<br>
If it helps the system is Ubuntu 16.04 LTS, which is fully systemd.<br>
<br>
Cheers.<br>
<br>
Phill.<br>
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