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    <div class="moz-cite-prefix">On 06/26/2014 12:42 PM, Bao Nguyen
      wrote:<br>
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cite="mid:CAArUcOLfWPUpiTBdsokZ_gAT08uAyZJTQOss3gvEniMsv1K5hQ@mail.gmail.com"
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        <div>On Precise (12.04) ubuntu cloud image. When spun up on AWS,
          it seemed that cloud-init (or other mysterious process) format
          ephemeral0 (or /dev/xvdb) and mount it. I wasn't able to find
          anything in cloud-init.log that indicate cloud-init did this.</div>
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    </blockquote>
    On AWS, ephemeral0 is pre-formated by AWS. Also, the auto-formating
    is done on a per-cloud basis, which is only Azure and SmartOS at
    this time. We were thinking about putting something in for AWS, but
    never got around to it. <br>
    <br>
    <blockquote
cite="mid:CAArUcOLfWPUpiTBdsokZ_gAT08uAyZJTQOss3gvEniMsv1K5hQ@mail.gmail.com"
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        <div>I was able to disable/overwrite mounting from happen via:</div>
        <div><br>
        </div>
        <div>#cloud-config</div>
        <div>
          <div>mounts:</div>
          <div> - [ ephemeral0, null ]</div>
        </div>
        <div><br>
        </div>
        <div>However I'm having a really hard time preventing auto
          partitioning from happening. I've read that it's propose and
          backport to Precise to do just that [2] and the configuration
          for it [1] is here:</div>
        <div><br>
        </div>
        <div>
          <div>fs_setup:</div>
          <div>   - label: ephemeral0</div>
          <div>     filesystem: 'ext3'</div>
          <div>     device: 'ephemeral0'</div>
          <div>     partition: 'none'</div>
          <div>     overwrite: False</div>
          <div><br>
          </div>
          <div>disk_setup:</div>
          <div>   ephmeral0:</div>
          <div>       type: 'mbr'</div>
          <div>       layout: True</div>
          <div>       overwrite: False</div>
        </div>
        <div><br>
        </div>
        <div>Anyone know how to prevent this from happening
          automatically on the Ubuntu cloud-image?</div>
        <div><br>
        </div>
        <div>[1] <a moz-do-not-send="true"
href="https://github.com/number5/cloud-init/blob/master/doc/examples/cloud-config-disk-setup.txt">https://github.com/number5/cloud-init/blob/master/doc/examples/cloud-config-disk-setup.txt</a></div>
        <div>[2] <a moz-do-not-send="true"
href="https://bugs.launchpad.net/ubuntu/+source/walinuxagent/+bug/1231490">https://bugs.launchpad.net/ubuntu/+source/walinuxagent/+bug/1231490</a></div>
        <div><br>
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        <br clear="all">
        <div>-bn<br>
          0216331C</div>
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    <pre class="moz-signature" cols="72">-- 


Ben Howard
<a class="moz-txt-link-abbreviated" href="mailto:ben.howard@canonical.com">ben.howard@canonical.com</a>
Canonical
GPG ID 0x5406A866


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