<div dir="ltr">Thanks for the quick reponse,<br><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Sep 9, 2014 at 10:55 AM, Peter Robinson <span dir="ltr"><<a href="mailto:pbrobinson@gmail.com" target="_blank">pbrobinson@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Hi Martin,<br>
<span class=""><br>
> I am have been building a Fedora 20 image for the XO4, and I am seeing<br>
> memory corruption problems while running yum in these images (please check<br>
> the logs [1,2]).<br>
<br>
</span>The logs don't mean anything to me. What device are you running it on,<br>
how much memory, do you have swap enabled?<br></blockquote><div><br></div><div>It is running on a XO4, with 999MB ram and no swap. Maybe James can explain better what other specs are for the XO4. </div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<span class=""><br>
> To give you some context, we are using olpc-os-builder (master [3]) with<br>
> fc20 repositories plus a few hand-crafted packages such as the kernel,<br>
> systemd and xorg, taken from previous Daniel Narvaez efforts [4,5].<br>
><br>
> These crashes happens randomly when yum is running, by calling yum update or<br>
> when olpc-os-build is installing system packages.<br>
<br>
</span>Yum isn't the most memory friendly, and some of the post update<br>
scripts aren't either, you need to make sure there's enough<br>
memory/swap.<br></blockquote><div><br></div><div>I am not so sure this is related to memory usage really, as it happens even when I am installing just a few packages (located in FS) via "yum update /packages/*.rpm". </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<span class=""><br>
> James Cameron, who spent some time researching about this issue, speculates<br>
> that this problem could be caused by: (a) using older kernel that was<br>
> compiled (possibly) with different options compared to f20's, or (b) a<br>
> faulty glibc library.<br>
><br>
> I was wondering if this could be related to something else, something more<br>
> specific to yum or python arm binaries (?).<br>
<br>
</span>Unlikely, I've not seen issues elsewhere. But I need more details.<br></blockquote><div><br></div><div>What kind of details would you need? I can try reproducing and send what you need.</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<span class=""><br>
> I would sincerely appreciate any guidance you can provide to start<br>
> discarding possibilities and try to debug this issue.<br>
><br>
> Thanks in advance for any help you can provide!<br>
<br>
</span>What version of OOB are you using, and what config files? I can try<br>
and recreate the problem here on other devices.<br></blockquote><div><br></div><div>This problem occurs in all f20 images for the XO4 that we or others have created.</div><div><br></div><div>The latest images were created using:</div><div> </div><div>* OLPC's OOB masterbranch: <a href="git://dev.laptop.org/projects/olpc-os-builder" style="color:black;text-decoration:none;font-family:sans-serif;font-size:12px;white-space:nowrap">git://dev.laptop.org/projects/olpc-os-builder</a></div><div>* OLPC's .ini file: <a href="http://dev.laptop.org/git/projects/olpc-os-builder/tree/examples/olpc-os-14.1.0-xo4.ini">http://dev.laptop.org/git/projects/olpc-os-builder/tree/examples/olpc-os-14.1.0-xo4.ini</a></div><div><br></div><div>In case you have a XO4 with you, and have the time to try this out, you can download an image from <a href="http://system.one-education.org/au2a/images/testing/40002au4/">http://system.one-education.org/au2a/images/testing/40002au4/</a></div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<span class=""><font color="#888888"><br>
Peter<br>
</font></span></blockquote></div><br></div></div>