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    <div class="moz-cite-prefix">Dear Sir;<br>
      <br>
      I have did the same and the same error message still exists<br>
      <br>
      Did you check the logs attached in my previous message?<br>
      <br>
      Fawzy Ibrahim<br>
      Redhat Certified Engineer<br>
      Palestine<br>
      <br>
      <br>
      On 02/10/2016 11:47 PM, Raz Tamir wrote:<br>
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cite="mid:CAJ9Ngn9EpHXO9eqHjYq4UVMf9fE74oPtncQufyWWddBmZhhiQg@mail.gmail.com"
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        <div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small;color:#000000">Hi
          Fawzy,</div>
        <div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small;color:#000000">After
          you rebooted your 3 hosts you need to make sure you are
          confirming the hosts are actually rebooted.</div>
        <div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small;color:#000000">You
          can do it by right clicking on each host and select "confirm
          host has been rebooted"</div>
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                            <div dir="ltr"><font face="arial, helvetica,
                                sans-serif" size="2" color="#000000">Thanks,</font>
                              <div><font face="arial, helvetica,
                                  sans-serif" size="2" color="#000000">Raz
                                  Tamir</font></div>
                              <div><font face="arial, helvetica,
                                  sans-serif" size="2" color="#000000">Red
                                  Hat Israel</font></div>
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        <div class="gmail_quote">On Wed, Feb 10, 2016 at 8:50 PM, Fawzy
          Ibrahim <span dir="ltr">&lt;<a moz-do-not-send="true"
              href="mailto:fawzy_ibrhim@yahoo.com" target="_blank">fawzy_ibrhim@yahoo.com</a>&gt;</span>
          wrote:<br>
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            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div class="HOEnZb">
              <div class="h5">Dear All;<br>
                <br>
                I have oVirt Engine Version: 3.5.6.2-1.el6 with three
                nodesrunning<br>
                standard Centos 6.7 64bit.<br>
                <br>
                The main data storage storage is on OpenFiler iScsi
                volume.<br>
                <br>
                After rebooting the three nodes; the main data storage
                domain is down<br>
                and all the three hosts are marked as "Non Operational"<br>
                <br>
                When I try to activate any host; I get the below error
                message:-<br>
                <br>
                    "Host XXXXX cannot access the Storage Domain(s)
                &lt;UNKNOWN&gt; attached<br>
                    to the Data Center Default. Setting Host state to
                Non-Operational."<br>
                <br>
                <br>
                I have attached the engine and vdsm log.<br>
                <br>
                Best Regards<br>
                Fawzy Ibrahim<br>
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            <br>
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              href="http://lists.ovirt.org/mailman/listinfo/users"
              rel="noreferrer" target="_blank">http://lists.ovirt.org/mailman/listinfo/users</a><br>
            <br>
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