<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jul 6, 2016 at 5:00 PM, Fernando Frediani <span dir="ltr"><<a href="mailto:fernando.frediani@upx.com.br" target="_blank">fernando.frediani@upx.com.br</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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Hi Yaniv,<br>
<br>
I have already done a fair amount of tunning to run a minimal OS
from a USB stick and it seems to work reasonable well overtime, but
nothing rock solid and of course I wouldn't try it myself in a
production oVirt Node if that's not official.<br></div></blockquote><div><br></div><div>For production I'd use boot from SAN, either via FC or iSCSI (HW adapter needed of course).</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div text="#000000" bgcolor="#FFFFFF">
<br>
Even if it's not running in memory it's just a question to create a
schema to avoid all unnecessary writes to permanent storage. Logs
can be limited to a short period in memory (in another Console) or
sent to a remote syslog server. It doesn't change much for the base
OS to read anything it needs.<br>
I thought I had seen these years ago during the development of the
first versions of oVirt Node, but maybe I misunderstood or it was
not considered for newer versions.<br>
<br>
Perhaps there is something around this on some roadmap. As I
mentioned, this is a significant saving for any platform not having
to use any disks in the Compute Nodes.<br></div></blockquote><div><br></div><div>Yes, would be cool to run it from SD card - but indeed you can't store logs there, as just the write speed alone will slow you down (write speed over time will degrade significantly in SDs, due to garbage collection). </div><div>Writing logs to memory is a bit of a problem - when you'll have issues, they might get lost. A better and more performant solution would be to write them to a remote server (rsyslog or such).</div><div><br></div><div>But really, running off the smallest SSD (64-128GB) is not very expensive (~50$ from ebay/amazon), fast and does not consume a lot of electricity.</div><div>Y.</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div text="#000000" bgcolor="#FFFFFF">
<br>
Regards,<br>
Fernando<div><div class="h5"><br>
<br>
<br>
<div>Em 06/07/2016 10:40, Yaniv Dary
escreveu:<br>
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<div dir="ltr">oVirt node depends on the base OS support of the
feature (Fedora\CentOS).
<div>I have seen people do this online, but nothing official, so
you can try it.</div>
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<pre cols="72"><span style="font-family:arial,helvetica,sans-serif">Yaniv Dary
Technical Product Manager
Red Hat Israel Ltd.
34 Jerusalem Road
Building A, 4th floor
Ra'anana, Israel 4350109
Tel : <a href="tel:%2B972%20%289%29%207692306" value="+97297692306" target="_blank">+972 (9) 7692306</a>
8272306
Email: <a href="mailto:ydary@redhat.com" target="_blank">ydary@redhat.com</a>
IRC : ydary</span></pre>
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<div class="gmail_quote">On Wed, Jul 6, 2016 at 3:23 PM,
Fernando Frediani <span dir="ltr"><<a href="mailto:fernando.frediani@upx.com.br" target="_blank"></a><a href="mailto:fernando.frediani@upx.com.br" target="_blank">fernando.frediani@upx.com.br</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello
there,<br>
<br>
With oVirt 4.0 Release is running oVirt Node in a SD Card or
USB Stick supported where the system boots in memory and
only writes configuration changes to permanent storage
similar to what VMware ESXi does ?<br>
<br>
This is very useful and can save a significant amount on
CAPEX and running costs depending on the size of the
cluster.<br>
<br>
Thanks<br>
Fernando<br>
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