<html>
  <head>
    <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
  </head>
  <body bgcolor="#FFFFFF" text="#000000">
    <p>Thanks for the clarification Adam.</p>
    <p>That makes total sense.</p>
    <p>Reagrds<br>
      Fernando<br>
    </p>
    <div class="moz-cite-prefix">On 17/04/2017 11:28, Adam Litke wrote:<br>
    </div>
    <blockquote
cite="mid:CAG8F9UE5HVYeY0iwQ+1cJmaMHDx0nLnZywrJayGq8WBdTDV+Ew@mail.gmail.com"
      type="cite">
      <div dir="ltr"><br>
        <div class="gmail_extra"><br>
          <div class="gmail_quote">On Mon, Apr 17, 2017 at 9:12 AM,
            FERNANDO FREDIANI <span dir="ltr">&lt;<a
                moz-do-not-send="true"
                href="mailto:fernando.frediani@upx.com" target="_blank">fernando.frediani@upx.com</a>&gt;</span>
            wrote:<br>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">
              <div bgcolor="#FFFFFF" text="#000000">
                <p>Should I understand then that fecing is not
                  mandatory, just advised and there are no downtimes to
                  the rest of the cluster if a pending manual action has
                  to be done to confirm a host has been rebooted in
                  order to move the SPM to another live host. Perhaps
                  only effect is not be able to add new hosts and
                  connect to storage or something ?</p>
              </div>
            </blockquote>
            <div>A missing SPM will not affect existing VMs.  Running
              VMs (on hosts other than the SPM host) will continue to
              run normally and you can even start existing VMs.  Without
              an SPM you will not be able to manipulate the storage
              (Add/remove domains, add/remove disks, migrate disks,
              etc).<br>
            </div>
            <div><br>
               </div>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">
              <div bgcolor="#FFFFFF" text="#000000"><span class="HOEnZb"><font
                    color="#888888">
                    <p>Fernando<br>
                    </p>
                  </font></span>
                <div>
                  <div class="h5">
                    <div class="m_7118500493255933245moz-cite-prefix">On
                      17/04/2017 10:06, Nir Soffer wrote:<br>
                    </div>
                    <blockquote type="cite">
                      <div dir="ltr">
                        <div class="gmail_quote">
                          <div dir="ltr">On Mon, Apr 17, 2017 at 8:24 AM
                            Konstantin Raskoshnyi &lt;<a
                              moz-do-not-send="true"
                              href="mailto:konrasko@gmail.com"
                              target="_blank">konrasko@gmail.com</a>&gt;
                            wrote:<br>
                          </div>
                          <blockquote class="gmail_quote"
                            style="margin:0 0 0 .8ex;border-left:1px
                            #ccc solid;padding-left:1ex">
                            <div dir="ltr">But actually, it didn't work
                              well. After main SPM host went down I see
                              this
                              <div><img
                                  src="cid:part3.327B103E.0FE862E1@upx.com"
                                  alt="Screen Shot 2017-04-16 at
                                  10.22.00 PM.png"
                                  style="max-width:100%"></div>
                              <div><br>
                                2017-04-17 05:23:15,554Z ERROR
                                [org.ovirt.engine.core.<wbr>vdsbroker.irsbroker.IrsProxy]
                                (DefaultQuartzScheduler5)
                                [4dcc033d-26bf-49bb-bfaa-<wbr>03a970dbbec1]
                                SPM Init: could not find reported vds or
                                not up - pool: 'STG' vds_spm_id: '1'<br>
                              </div>
                              <div>2017-04-17 05:23:15,567Z INFO
                                 [org.ovirt.engine.core.<wbr>vdsbroker.irsbroker.IrsProxy]
                                (DefaultQuartzScheduler5)
                                [4dcc033d-26bf-49bb-bfaa-<wbr>03a970dbbec1]
                                SPM selection - vds seems as spm 'tank5'</div>
                              <div>2017-04-17 05:23:15,567Z WARN
                                 [org.ovirt.engine.core.<wbr>vdsbroker.irsbroker.IrsProxy]
                                (DefaultQuartzScheduler5)
                                [4dcc033d-26bf-49bb-bfaa-<wbr>03a970dbbec1]
                                spm vds is non responsive, stopping spm
                                selection.</div>
                              <div><br>
                              </div>
                              <div>So that means only if BMC is up it's
                                possible to automatically switch  SPM
                                host?</div>
                            </div>
                          </blockquote>
                          <div><br>
                          </div>
                          <div>BMC?</div>
                          <div><br>
                          </div>
                          <div>If your SPM is no responsive, the system
                            will try to fence it. Did you </div>
                          <div>configure power management for all hosts?
                            did you check that it </div>
                          <div>work? How did you simulate non-responsive
                            host? </div>
                          <div><br>
                          </div>
                          <div>If power management is not configured or
                            fail, the system cannot</div>
                          <div>move the spm to another host, unless you
                            manually confirm that the</div>
                          <div>SPM host was rebooted.</div>
                          <div><br>
                          </div>
                          <div>Nir</div>
                          <div> </div>
                          <blockquote class="gmail_quote"
                            style="margin:0 0 0 .8ex;border-left:1px
                            #ccc solid;padding-left:1ex">
                            <div dir="ltr">
                              <div><br>
                              </div>
                              <div>Thanks</div>
                            </div>
                            <div class="gmail_extra"><br>
                              <div class="gmail_quote">On Sun, Apr 16,
                                2017 at 8:29 PM, Konstantin Raskoshnyi <span
                                  dir="ltr">&lt;<a
                                    moz-do-not-send="true"
                                    href="mailto:konrasko@gmail.com"
                                    target="_blank">konrasko@gmail.com</a>&gt;</span>
                                wrote:<br>
                                <blockquote class="gmail_quote"
                                  style="margin:0 0 0
                                  .8ex;border-left:1px #ccc
                                  solid;padding-left:1ex">
                                  <div>Oh, fence agent works fine if I
                                    select ilo4,</div>
                                  <div>Thank you for your help!</div>
                                  <div
                                    class="m_7118500493255933245m_-7049131619673457077HOEnZb">
                                    <div
                                      class="m_7118500493255933245m_-7049131619673457077h5">
                                      <div><br>
                                        <div class="gmail_quote">
                                          <div>On Sun, Apr 16, 2017 at
                                            8:22 PM Dan Yasny &lt;<a
                                              moz-do-not-send="true"
                                              href="mailto:dyasny@gmail.com"
                                              target="_blank">dyasny@gmail.com</a>&gt;
                                            wrote:<br>
                                          </div>
                                          <blockquote
                                            class="gmail_quote"
                                            style="margin:0 0 0
                                            .8ex;border-left:1px #ccc
                                            solid;padding-left:1ex">
                                            <div>
                                              <div class="gmail_extra">
                                                <div class="gmail_quote">On
                                                  Sun, Apr 16, 2017 at
                                                  11:19 PM, Konstantin
                                                  Raskoshnyi <span>&lt;<a
moz-do-not-send="true" href="mailto:konrasko@gmail.com" target="_blank">konrasko@gmail.com</a>&gt;</span>
                                                  wrote:<br>
                                                  <blockquote
                                                    class="gmail_quote"
                                                    style="margin:0 0 0
                                                    .8ex;border-left:1px
                                                    #ccc
                                                    solid;padding-left:1ex">
                                                    <div>Makes sense. </div>
                                                    <div>I was trying to
                                                      set it up, but
                                                      doesn't work with
                                                      our staging
                                                      hardware. </div>
                                                    <div>We have old
                                                      ilo100, I'll try
                                                      again. </div>
                                                    <div>Thanks!
                                                      <div>
                                                        <div
class="m_7118500493255933245m_-7049131619673457077m_-3447473577979970513m_1774108031932592886h5"><br>
                                                        </div>
                                                      </div>
                                                    </div>
                                                  </blockquote>
                                                  <div><br>
                                                  </div>
                                                </div>
                                              </div>
                                            </div>
                                            <div>
                                              <div class="gmail_extra">
                                                <div class="gmail_quote">
                                                  <div>It is absolutely
                                                    necessary for any HA
                                                    to work properly.
                                                    There's of course
                                                    the "confirm host
                                                    has been shutdown"
                                                    option, which serves
                                                    as an override for
                                                    the fence command,
                                                    but it's manual</div>
                                                </div>
                                              </div>
                                            </div>
                                            <div>
                                              <div class="gmail_extra">
                                                <div class="gmail_quote">
                                                  <div> </div>
                                                  <blockquote
                                                    class="gmail_quote"
                                                    style="margin:0 0 0
                                                    .8ex;border-left:1px
                                                    #ccc
                                                    solid;padding-left:1ex">
                                                    <div>
                                                      <div>
                                                        <div
class="m_7118500493255933245m_-7049131619673457077m_-3447473577979970513m_1774108031932592886h5">
                                                          <div
                                                          class="gmail_quote">
                                                          <div>On Sun,
                                                          Apr 16, 2017
                                                          at 8:18 PM Dan
                                                          Yasny &lt;<a
                                                          moz-do-not-send="true"
href="mailto:dyasny@gmail.com" target="_blank">dyasny@gmail.com</a>&gt;
                                                          wrote:<br>
                                                          </div>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>
                                                          <div
                                                          class="gmail_extra">
                                                          <div
                                                          class="gmail_quote">On
                                                          Sun, Apr 16,
                                                          2017 at 11:15
                                                          PM, Konstantin
                                                          Raskoshnyi <span>&lt;<a
moz-do-not-send="true" href="mailto:konrasko@gmail.com" target="_blank">konrasko@gmail.com</a>&gt;</span>
                                                          wrote:<br>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>Fence
                                                          agent under
                                                          each node?</div>
                                                          </blockquote>
                                                          <div><br>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div
                                                          class="gmail_extra">
                                                          <div
                                                          class="gmail_quote">
                                                          <div>When you
                                                          configure a
                                                          host, there's
                                                          the power
                                                          management
                                                          tab, where you
                                                          need to enter
                                                          the bmc
                                                          details for
                                                          the host. If
                                                          you don't have
                                                          fencing
                                                          enabled, how
                                                          do you expect
                                                          the system to
                                                          make sure a
                                                          host running a
                                                          service is
                                                          actually down
                                                          (and it is
                                                          safe to start
                                                          HA services
                                                          elsewhere),
                                                          and not, for
                                                          example, just
                                                          unreachable by
                                                          the engine?
                                                          How do you
                                                          avoid a
                                                          splitbraid
                                                          -&gt; SBA ?</div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div
                                                          class="gmail_extra">
                                                          <div
                                                          class="gmail_quote">
                                                          <div> </div>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div
class="m_7118500493255933245m_-7049131619673457077m_-3447473577979970513m_1774108031932592886m_3846525510791616528m_1120357608056684743HOEnZb">
                                                          <div
class="m_7118500493255933245m_-7049131619673457077m_-3447473577979970513m_1774108031932592886m_3846525510791616528m_1120357608056684743h5">
                                                          <div><br>
                                                          <div
                                                          class="gmail_quote">
                                                          <div>On Sun,
                                                          Apr 16, 2017
                                                          at 8:14 PM Dan
                                                          Yasny &lt;<a
                                                          moz-do-not-send="true"
href="mailto:dyasny@gmail.com" target="_blank">dyasny@gmail.com</a>&gt;
                                                          wrote:<br>
                                                          </div>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>
                                                          <div
                                                          class="gmail_extra">
                                                          <div
                                                          class="gmail_quote">On
                                                          Sun, Apr 16,
                                                          2017 at 11:13
                                                          PM, Konstantin
                                                          Raskoshnyi <span>&lt;<a
moz-do-not-send="true" href="mailto:konrasko@gmail.com" target="_blank">konrasko@gmail.com</a>&gt;</span>
                                                          wrote:<br>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>"Corner
                                                          cases"? </div>
                                                          <div>I tried
                                                          to simulate
                                                          crash of SPM
                                                          server and
                                                          ovirt kept
                                                          trying to
                                                          reistablished
                                                          connection to
                                                          the failed
                                                          node. </div>
                                                          </blockquote>
                                                          <div><br>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div
                                                          class="gmail_extra">
                                                          <div
                                                          class="gmail_quote">
                                                          <div>Did you
                                                          configure
                                                          fencing?</div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div
                                                          class="gmail_extra">
                                                          <div
                                                          class="gmail_quote">
                                                          <div> </div>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div
class="m_7118500493255933245m_-7049131619673457077m_-3447473577979970513m_1774108031932592886m_3846525510791616528m_1120357608056684743m_362375030716496662m_-7954130722235415210HOEnZb">
                                                          <div
class="m_7118500493255933245m_-7049131619673457077m_-3447473577979970513m_1774108031932592886m_3846525510791616528m_1120357608056684743m_362375030716496662m_-7954130722235415210h5">
                                                          <div><br>
                                                          </div>
                                                          <div><br>
                                                          <div
                                                          class="gmail_quote">
                                                          <div>On Sun,
                                                          Apr 16, 2017
                                                          at 8:10 PM Dan
                                                          Yasny &lt;<a
                                                          moz-do-not-send="true"
href="mailto:dyasny@gmail.com" target="_blank">dyasny@gmail.com</a>&gt;
                                                          wrote:<br>
                                                          </div>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>
                                                          <div
                                                          class="gmail_extra">
                                                          <div
                                                          class="gmail_quote">On
                                                          Sun, Apr 16,
                                                          2017 at 7:29
                                                          AM, Nir Soffer
                                                          <span>&lt;<a
                                                          moz-do-not-send="true"
href="mailto:nsoffer@redhat.com" target="_blank">nsoffer@redhat.com</a>&gt;</span>
                                                          wrote:<br>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>
                                                          <div
                                                          class="gmail_quote"><span>
                                                          <div>On Sun,
                                                          Apr 16, 2017
                                                          at 2:05 PM Dan
                                                          Yasny &lt;<a
                                                          moz-do-not-send="true"
href="mailto:dyasny@redhat.com" target="_blank">dyasny@redhat.com</a>&gt;
                                                          wrote:<br>
                                                          </div>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>
                                                          <div><br>
                                                          <div
                                                          class="gmail_extra"><br>
                                                          <div
                                                          class="gmail_quote">On
                                                          Apr 16, 2017
                                                          7:01 AM, "Nir
                                                          Soffer" &lt;<a
moz-do-not-send="true" href="mailto:nsoffer@redhat.com" target="_blank">nsoffer@redhat.com</a>&gt;
                                                          wrote:<br
                                                          type="attribution">
                                                          <blockquote
class="m_7118500493255933245m_-7049131619673457077m_-3447473577979970513m_1774108031932592886m_3846525510791616528m_1120357608056684743m_362375030716496662m_-7954130722235415210m_2173925241577336935m_-6434846878319371191m_5622908635907641408m_8346864507156293354quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>
                                                          <div
                                                          class="gmail_quote">
                                                          <div
class="m_7118500493255933245m_-7049131619673457077m_-3447473577979970513m_1774108031932592886m_3846525510791616528m_1120357608056684743m_362375030716496662m_-7954130722235415210m_2173925241577336935m_-6434846878319371191m_5622908635907641408m_8346864507156293354quoted-text">
                                                          <div>On Sun,
                                                          Apr 16, 2017
                                                          at 4:17 AM Dan
                                                          Yasny &lt;<a
                                                          moz-do-not-send="true"
href="mailto:dyasny@gmail.com" target="_blank">dyasny@gmail.com</a>&gt;
                                                          wrote:<br>
                                                          </div>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>When you
                                                          set up a
                                                          storage
                                                          domain, you
                                                          need to
                                                          specify a host
                                                          to perform the
                                                          initial
                                                          storage
                                                          operations,
                                                          but once the
                                                          SD is defined,
                                                          it's details
                                                          are in the
                                                          engine
                                                          database, and
                                                          all the hosts
                                                          get connected
                                                          to it
                                                          directly. If
                                                          the first host
                                                          you used to
                                                          define the SD
                                                          goes down, all
                                                          other hosts
                                                          will still
                                                          remain
                                                          connected and
                                                          work. SPM is
                                                          an HA service,
                                                          and if the
                                                          current SPM
                                                          host goes
                                                          down, SPM gets
                                                          started on
                                                          another host
                                                          in the DC. In
                                                          short, unless
                                                          your actual
                                                          NFS exporting
                                                          host goes
                                                          down, there is
                                                          no outage. </div>
                                                          </blockquote>
                                                          <div><br>
                                                          </div>
                                                          </div>
                                                          <div>There is
                                                          no storage
                                                          outage, but if
                                                          you shutdown
                                                          the spm host,
                                                          the spm host</div>
                                                          <div>will not
                                                          move to a new
                                                          host until the
                                                          spm host is
                                                          online again,
                                                          or you confirm</div>
                                                          <div>manually
                                                          that the spm
                                                          host was
                                                          rebooted.</div>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          <div><br>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div>In a
                                                          properly
                                                          configured
                                                          setup the SBA
                                                          should take
                                                          care of that.
                                                          That's the
                                                          whole point of
                                                          HA services </div>
                                                          </div>
                                                          </blockquote>
                                                          <div><br>
                                                          </div>
                                                          </span>
                                                          <div>In some
                                                          cases like
                                                          power loss or
                                                          hardware
                                                          failure, there
                                                          is no way to
                                                          start</div>
                                                          <div>the spm
                                                          host, and the
                                                          system cannot
                                                          recover
                                                          automatically.</div>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          <div><br>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div
                                                          class="gmail_extra">
                                                          <div
                                                          class="gmail_quote">
                                                          <div>There are
                                                          always corner
                                                          cases, no
                                                          doubt. But in
                                                          a normal
                                                          situation.
                                                          where an SPM
                                                          host goes down
                                                          because of a
                                                          hardware
                                                          failure, it
                                                          gets fenced,
                                                          other hosts
                                                          contend for
                                                          SPM and start
                                                          it. No
                                                          surprises
                                                          there. </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          <div>
                                                          <div
                                                          class="gmail_extra">
                                                          <div
                                                          class="gmail_quote">
                                                          <div> </div>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>
                                                          <div
                                                          class="gmail_quote"><span
class="m_7118500493255933245m_-7049131619673457077m_-3447473577979970513m_1774108031932592886m_3846525510791616528m_1120357608056684743m_362375030716496662m_-7954130722235415210m_2173925241577336935m_-6434846878319371191HOEnZb"><font
color="#888888">
                                                          <div><br>
                                                          </div>
                                                          <div>Nir</div>
                                                          </font></span>
                                                          <div>
                                                          <div
class="m_7118500493255933245m_-7049131619673457077m_-3447473577979970513m_1774108031932592886m_3846525510791616528m_1120357608056684743m_362375030716496662m_-7954130722235415210m_2173925241577336935m_-6434846878319371191h5">
                                                          <div> </div>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>
                                                          <div><br>
                                                          </div>
                                                          <div>
                                                          <div
                                                          class="gmail_extra">
                                                          <div
                                                          class="gmail_quote">
                                                          <blockquote
class="m_7118500493255933245m_-7049131619673457077m_-3447473577979970513m_1774108031932592886m_3846525510791616528m_1120357608056684743m_362375030716496662m_-7954130722235415210m_2173925241577336935m_-6434846878319371191m_5622908635907641408m_8346864507156293354quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>
                                                          <div
                                                          class="gmail_quote"><font
color="#888888">
                                                          <div><br>
                                                          </div>
                                                          <div>Nir</div>
                                                          </font>
                                                          <div
class="m_7118500493255933245m_-7049131619673457077m_-3447473577979970513m_1774108031932592886m_3846525510791616528m_1120357608056684743m_362375030716496662m_-7954130722235415210m_2173925241577336935m_-6434846878319371191m_5622908635907641408m_8346864507156293354elided-text">
                                                          <div> </div>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div
                                                          class="gmail_extra"><br>
                                                          <div
                                                          class="gmail_quote">On
                                                          Sat, Apr 15,
                                                          2017 at 1:53
                                                          PM, Konstantin
                                                          Raskoshnyi <span>&lt;<a
moz-do-not-send="true" href="mailto:konrasko@gmail.com" target="_blank">konrasko@gmail.com</a>&gt;</span>
                                                          wrote:<br>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>Hi
                                                          Fernando,</div>
                                                          <div>I see
                                                          each host has
                                                          direct
                                                          connection nfs
                                                          mount, but
                                                          yes, if main
                                                          host to which
                                                          I connected
                                                          nfs storage
                                                          going down the
                                                          storage
                                                          becomes
                                                          unavailable
                                                          and all vms
                                                          are down</div>
                                                          <div
class="m_7118500493255933245m_-7049131619673457077m_-3447473577979970513m_1774108031932592886m_3846525510791616528m_1120357608056684743m_362375030716496662m_-7954130722235415210m_2173925241577336935m_-6434846878319371191m_5622908635907641408m_8346864507156293354m_6867735599077560094m_2305649857973554660HOEnZb">
                                                          <div
class="m_7118500493255933245m_-7049131619673457077m_-3447473577979970513m_1774108031932592886m_3846525510791616528m_1120357608056684743m_362375030716496662m_-7954130722235415210m_2173925241577336935m_-6434846878319371191m_5622908635907641408m_8346864507156293354m_6867735599077560094m_2305649857973554660h5">
                                                          <div><br>
                                                          </div>
                                                          <div><br>
                                                          <div
                                                          class="gmail_quote">
                                                          <div>On Sat,
                                                          Apr 15, 2017
                                                          at 10:37 AM
                                                          FERNANDO
                                                          FREDIANI &lt;<a
moz-do-not-send="true" href="mailto:fernando.frediani@upx.com"
                                                          target="_blank">fernando.frediani@upx.com</a>&gt;
                                                          wrote:<br>
                                                          </div>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>
                                                          <div>
                                                          <div>
                                                          <div>Hello
                                                          Konstantin.<br>
                                                          <br>
                                                          </div>
                                                          That doesn`t
                                                          make much
                                                          sense make a
                                                          whole cluster
                                                          depend on a
                                                          single host.
                                                          From what I
                                                          know any host
                                                          talk directly
                                                          to NFS Storage
                                                          Array or
                                                          whatever other
                                                          Shared Storage
                                                          you have.<br>
                                                          </div>
                                                          Have you
                                                          tested that
                                                          host going
                                                          down if that
                                                          affects the
                                                          other with the
                                                          NFS mounted
                                                          directlly in a
                                                          NFS Storage
                                                          array ?<br>
                                                          <br>
                                                          </div>
                                                          </div>
                                                          <div>Fernando<br>
                                                          </div>
                                                          <div
                                                          class="gmail_extra"><br>
                                                          <div
                                                          class="gmail_quote">2017-04-15
                                                          12:42
                                                          GMT-03:00
                                                          Konstantin
                                                          Raskoshnyi <span>&lt;<a
moz-do-not-send="true" href="mailto:konrasko@gmail.com" target="_blank">konrasko@gmail.com</a>&gt;</span>:<br>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>In ovirt
                                                          you have to
                                                          attach storage
                                                          through
                                                          specific
                                                          host. </div>
                                                          <div>If host
                                                          goes down
                                                          storage is not
                                                          available. </div>
                                                          <div><br>
                                                          <div
                                                          class="gmail_quote">
                                                          <div>On Sat,
                                                          Apr 15, 2017
                                                          at 7:31 AM
                                                          FERNANDO
                                                          FREDIANI &lt;<a
moz-do-not-send="true" href="mailto:fernando.frediani@upx.com"
                                                          target="_blank">fernando.frediani@upx.com</a>&gt;
                                                          wrote:<br>
                                                          </div>
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>
                                                          <div>
                                                          <div>Well,
                                                          make it not go
                                                          through host1
                                                          and dedicate a
                                                          storage server
                                                          for running
                                                          NFS and make
                                                          both hosts
                                                          connect to it.<br>
                                                          </div>
                                                          In my view NFS
                                                          is much easier
                                                          to manage than
                                                          any other type
                                                          of storage,
                                                          specially FC
                                                          and iSCSI and
                                                          performance is
                                                          pretty much
                                                          the same, so
                                                          you won`t get
                                                          better results
                                                          other than
                                                          management
                                                          going to other
                                                          type.<br>
                                                          <br>
                                                          </div>
                                                          Fernando<br>
                                                          </div>
                                                          <div
                                                          class="gmail_extra"><br>
                                                          </div>
                                                          <div
                                                          class="gmail_extra">
                                                          <div
                                                          class="gmail_quote">2017-04-15
                                                          5:25 GMT-03:00
                                                          Konstantin
                                                          Raskoshnyi <span>&lt;<a
moz-do-not-send="true" href="mailto:konrasko@gmail.com" target="_blank">konrasko@gmail.com</a>&gt;</span>:<br>
                                                          </div>
                                                          </div>
                                                          <div
                                                          class="gmail_extra">
                                                          <div
                                                          class="gmail_quote">
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                                          <div>Hi guys,
                                                          <div>I have
                                                          one
                                                          nfs storage,</div>
                                                          <div>it's
                                                          connected
                                                          through host1.</div>
                                                          <div>host2
                                                          also has
                                                          access to it,
                                                          I can easily
                                                          migrate
                                                          vms between
                                                          them.</div>
                                                          <div><br>
                                                          </div>
                                                          <div>The
                                                          question is -
                                                          if host1 is
                                                          down - all
                                                          infrastructure
                                                          is down, since
                                                          all traffic
                                                          goes through
                                                          host1,</div>
                                                          <div>is there
                                                          any way in
                                                          oVirt to use
                                                          redundant
                                                          storage?</div>
                                                          <div><br>
                                                          </div>
                                                          <div>Only
                                                          glusterfs?</div>
                                                          <div><br>
                                                          </div>
                                                          <div>Thanks</div>
                                                          <div><br>
                                                          </div>
                                                          </div>
                                                          <br>
                                                          </blockquote>
                                                          </div>
                                                          </div>
                                                          <div
                                                          class="gmail_extra">
                                                          <div
                                                          class="gmail_quote">
                                                          <blockquote
                                                          class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">______________________________<wbr>_________________<br>
                                                          Users mailing
                                                          list<br>
                                                          <a
                                                          moz-do-not-send="true"
href="mailto:Users@ovirt.org" target="_blank">Users@ovirt.org</a><br>
                                                          <a
                                                          moz-do-not-send="true"
href="http://lists.ovirt.org/mailman/listinfo/users" rel="noreferrer"
                                                          target="_blank">http://lists.ovirt.org/<wbr>mailman/listinfo/users</a><br>
                                                          <br>
                                                          </blockquote>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                          <br>
                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          <br>
______________________________<wbr>_________________<br>
                                                          Users mailing
                                                          list<br>
                                                          <a
                                                          moz-do-not-send="true"
href="mailto:Users@ovirt.org" target="_blank">Users@ovirt.org</a><br>
                                                          <a
                                                          moz-do-not-send="true"
href="http://lists.ovirt.org/mailman/listinfo/users" rel="noreferrer"
                                                          target="_blank">http://lists.ovirt.org/<wbr>mailman/listinfo/users</a><br>
                                                          <br>
                                                          </blockquote>
                                                          </div>
                                                          <br>
                                                          </div>
______________________________<wbr>_________________<br>
                                                          Users mailing
                                                          list<br>
                                                          <a
                                                          moz-do-not-send="true"
href="mailto:Users@ovirt.org" target="_blank">Users@ovirt.org</a><br>
                                                          <a
                                                          moz-do-not-send="true"
href="http://lists.ovirt.org/mailman/listinfo/users" rel="noreferrer"
                                                          target="_blank">http://lists.ovirt.org/<wbr>mailman/listinfo/users</a><br>
                                                          </blockquote>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          <br>
______________________________<wbr>_________________<br>
                                                          Users mailing
                                                          list<br>
                                                          <a
                                                          moz-do-not-send="true"
href="mailto:Users@ovirt.org" target="_blank">Users@ovirt.org</a><br>
                                                          <a
                                                          moz-do-not-send="true"
href="http://lists.ovirt.org/mailman/listinfo/users" rel="noreferrer"
                                                          target="_blank">http://lists.ovirt.org/<wbr>mailman/listinfo/users</a><br>
                                                          <br>
                                                          </blockquote>
                                                          </div>
                                                          <br>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                        </div>
                                                      </div>
                                                    </div>
                                                  </blockquote>
                                                </div>
                                              </div>
                                            </div>
                                          </blockquote>
                                        </div>
                                      </div>
                                    </div>
                                  </div>
                                </blockquote>
                              </div>
                              <br>
                            </div>
                          </blockquote>
                        </div>
                      </div>
                    </blockquote>
                    <br>
                  </div>
                </div>
              </div>
              <br>
              ______________________________<wbr>_________________<br>
              Users mailing list<br>
              <a moz-do-not-send="true" href="mailto:Users@ovirt.org">Users@ovirt.org</a><br>
              <a moz-do-not-send="true"
                href="http://lists.ovirt.org/mailman/listinfo/users"
                rel="noreferrer" target="_blank">http://lists.ovirt.org/<wbr>mailman/listinfo/users</a><br>
              <br>
            </blockquote>
          </div>
          <br>
          <br clear="all">
          <br>
          -- <br>
          <div class="gmail_signature" data-smartmail="gmail_signature">
            <div dir="ltr">Adam Litke</div>
          </div>
        </div>
      </div>
    </blockquote>
    <br>
  </body>
</html>