<div dir="ltr">Idk about a chestnut, but there's this:<div><br></div><div><a href="http://lists.openstack.org/pipermail/openstack-operators/2011-October/000297.html">http://lists.openstack.org/pipermail/openstack-operators/2011-October/000297.html</a><br></div><div><br></div><div>-Clay</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Sep 14, 2015 at 10:18 PM, Chris Friesen <span dir="ltr"><<a href="mailto:chris.friesen@windriver.com" target="_blank">chris.friesen@windriver.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On 09/14/2015 08:59 PM, Mark Kirkwood wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
Sorry if this is a bit of a chestnut, but I notice that<br>
<a href="http://docs.openstack.org/developer/swift/deployment_guide.html" rel="noreferrer" target="_blank">http://docs.openstack.org/developer/swift/deployment_guide.html</a> recommends:<br>
<br>
$ mount -t xfs -o noatime,nodiratime,nobarrier,logbufs=8 /dev/sda1<br>
/srv/node/sda<br>
<br>
in particular the 'nobarrier' is of interest here. It seems to me that<br>
there should be qualifiers mentioning the disk cache setting at least<br>
(i.e disabled) and perhaps the cache+battery settings for any adapter<br>
card that the disk device is plugged into. Otherwise there is a risk of<br>
data loss or corruption on host power loss that could take a long time<br>
for the various updater, auditor processes to pick up let alone fix.<br>
Thoughts?<br>
</blockquote>
<br></span>
I agree, just recommending "nobarrier" without any caveats is asking for trouble.<span class="HOEnZb"><font color="#888888"><br>
<br>
Chris</font></span><div class="HOEnZb"><div class="h5"><br>
<br>
<br>
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