Re: [ovirt-users] Ovirt GusterFS assistance

24 Mar 2015

      This is a multi-part message in MIME format.
--------------000909020404040603030705
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit

[+ ovirt-users]
On 03/24/2015 01:28 PM, Jonathan Mathews wrote:
...
Please note you have not been helpful at all as I have tried many 
things and have not been able to solve the issue and please do realize 
I am trying to do it through the ovirt front end.
You can provide the mount options from the ovirt front end, while 
creating the storage domain.
I'm assuming you selected Storage type as "Data/Posix compliant FS" or 
"Data/GlusterFS". There is a "Mount Options" field where you can specify 
"backupvolfile-server=<list of comma separated host names>". These are 
the other nodes on which the volume is replicated. So if the primary 
server is down, it will try to use the other servers to get the volume 
file. This is useful only when the virt server is first trying to mount 
the gluster volume.

Ideally, if your virt hosts are UP,  when one of the gluster servers 
goes down, your storage domain should be UP. (even without the 
backupvolfile-server option)

I'm not very familiar with oVirt Storage Domain ,so someone from the 
oVirt storage team should be able to guide you further.
...
On Tue, Mar 24, 2015 at 9:50 AM, Sahina Bose <sabose@redhat.com 
<mailto:sabose@redhat.com>> wrote:
On 03/24/2015 12:13 PM, Jonathan Mathews wrote:
...
the gluster volume is raid 0 replicated over 3 nodes and yes you
    are correct when one server goes down the volume stays up, but
    the storage domain goes down and that is where I need to find a
    volume identity to mount it by in storage domain.
Aah..ok. Maybe the/"/////backupvolfile-server" mount option would
    help you?
[+ Allon] for storage domain issue.
...
On Mon, Mar 23, 2015 at 12:02 PM, Sahina Bose <sabose@redhat.com
    <mailto:sabose@redhat.com>> wrote:
What is the type of volume that you've created? Is it a
        replicate volume?
# gluster volume info - should give you this information
If you're replicating the volume across 3 nodes, even when
        one of the server goes down, your storage domain should still
        be UP.
thanks
        sahina
On 03/23/2015 02:10 PM, Jonathan Mathews wrote:
...
Hi I am trying to setup an Ovirt, Glusterfs, VM servers. I
        have followed examples on setting up Ovirt and they have
        helped me so far, but not the end point that I am looking for.
        The web sites are:
        http://community.redhat.com/blog/2014/10/up-and-running-with-ovirt-3-5/
        http://community.redhat.com/blog/2014/05/ovirt-3-4-glusterized/
        http://www.linuxplumbersconf.org/2012/wp-content/uploads/2012/09/2012-lpc-vi...
I am running 3 HP micro servers and 2 HP DL360 G5
        The 3 micro servers are my glusterfs storage and have been
        provisioned for virt storage.
        The 2 DL360 are my processing machines.
Now my 3 gluster hosts are in one cluster, the volume is in
        up status and has been provisioned for Virt Storage. But the
        problem is that my mount point is directed to one server, so
        when that server goes down, the volume storage domain goes
        down. I am not sure whether there is a way of mounting it by
        a "volume identity", so when a server goes down the storage
        domain stays up.
With my 2 processing hosts, I have them in one cluster, but
        I have not gotten any where with this, as I want the Virtual
        machines to use the gluster volume as storage but use the
        processing hosts hardware for processing power.
I would appreciate any assistance.
_______________________________________________
        Users mailing list
        Users@ovirt.org  <mailto:Users@ovirt.org>
        http://lists.ovirt.org/mailman/listinfo/users
--------------000909020404040603030705
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: 8bit

<html>
  <head>
    <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
  </head>
  <body bgcolor="#FFFFFF" text="#000000">
    [+ ovirt-users]<br>
    <div class="moz-cite-prefix">On 03/24/2015 01:28 PM, Jonathan
      Mathews wrote:<br>
    </div>
    <blockquote
cite="mid:CAKsKnsxmHbBV30LJG6BWj+f7QXeG3ec7JLc0Sqmq=k1rWq0v_w@mail.gmail.com"
      type="cite">
      <div dir="ltr">Please note you have not been helpful at all as I
        have tried many things and have not been able to solve the issue
        and please do realize I am trying to do it through the ovirt
        front end.<br>
      </div>
    </blockquote>
    <br>
    You can provide the mount options from the ovirt front end, while
    creating the storage domain. <br>
    I'm assuming you selected Storage type as "Data/Posix compliant FS"
    or "Data/GlusterFS". There is a "Mount Options" field where you can
    specify "backupvolfile-server=<list of comma separated host
    names>". These are the other nodes on which the volume is
    replicated. So if the primary server is down, it will try to use the
    other servers to get the volume file. This is useful only when the
    virt server is first trying to mount the gluster volume.<br>
    <br>
    Ideally, if your virt hosts are UP,  when one of the gluster servers
    goes down, your storage domain should be UP. (even without the
    backupvolfile-server option)<br>
    <br>
    I'm not very familiar with oVirt Storage Domain ,so someone from the
    oVirt storage team should be able to guide you further.<br>
    <br>
    <br>
    <blockquote
cite="mid:CAKsKnsxmHbBV30LJG6BWj+f7QXeG3ec7JLc0Sqmq=k1rWq0v_w@mail.gmail.com"
      type="cite">
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Tue, Mar 24, 2015 at 9:50 AM, Sahina
          Bose <span dir="ltr"><<a moz-do-not-send="true"
              href="mailto:sabose@redhat.com" target="_blank">sabose@redhat.com</a>></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"><span class=""> <br>
                <div>On 03/24/2015 12:13 PM, Jonathan Mathews wrote:<br>
                </div>
                <blockquote type="cite">
                  <div dir="ltr">
                    <div>the gluster volume is raid 0 replicated over 3
                      nodes and yes you are correct when one server goes
                      down the volume stays up, but the storage domain
                      goes down and that is where I need to find a
                      volume identity to mount it by in storage domain.<br>
                    </div>
                  </div>
                </blockquote>
                <br>
              </span> Aah..ok. Maybe the<em> "</em><span><em></em><em></em></span>backupvolfile-server"

              mount option would help you?<br>
              <br>
              [+ Allon] for storage domain issue.<span class=""><br>
                <br>
                <br>
                <blockquote type="cite">
                  <div class="gmail_extra"><br>
                    <div class="gmail_quote">On Mon, Mar 23, 2015 at
                      12:02 PM, Sahina Bose <span dir="ltr"><<a
                          moz-do-not-send="true"
                          href="mailto:sabose@redhat.com"
                          target="_blank">sabose@redhat.com</a>></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"> What is
                          the type of volume that you've created? Is it
                          a replicate volume?<br>
                          <br>
                          # gluster volume info - should give you this
                          information<br>
                          <br>
                          If you're replicating the volume across 3
                          nodes, even when one of the server goes down,
                          your storage domain should still be UP.<br>
                          <br>
                          thanks<br>
                          sahina
                          <div>
                            <div><br>
                              <div>On 03/23/2015 02:10 PM, Jonathan
                                Mathews wrote:<br>
                              </div>
                            </div>
                          </div>
                          <blockquote type="cite">
                            <div>
                              <div>
                                <div dir="ltr">
                                  <div>
                                    <div>
                                      <div>
                                        <div>
                                          <div>
                                            <div>
                                              <div>Hi I am trying to
                                                setup an Ovirt,
                                                Glusterfs, VM servers. I
                                                have followed examples
                                                on setting up Ovirt and
                                                they have helped me so
                                                far, but not the end
                                                point that I am looking
                                                for.<br>
                                              </div>
                                              The web sites are:<br>
                                              <a moz-do-not-send="true"
href="http://community.redhat.com/blog/2014/10/up-and-running-with-ovirt-3-5/"
                                                target="_blank">http://community.redhat.com/blog/2014/10/up-and-running-with-ovirt-3-5/</a><br>
                                              <a moz-do-not-send="true"
href="http://community.redhat.com/blog/2014/05/ovirt-3-4-glusterized/"
                                                target="_blank">http://community.redhat.com/blog/2014/05/ovirt-3-4-glusterized/</a><br>
                                              <a moz-do-not-send="true"
href="http://www.linuxplumbersconf.org/2012/wp-content/uploads/2012/09/2012-lpc-vi..."
                                                target="_blank">http://www.linuxplumbersconf.org/2012/wp-content/uploads/2012/09/2012-lpc-virt-storage-virt-kvm-rao.pdf</a><br>
                                              <br>
                                            </div>
                                            I am running 3 HP micro
                                            servers and 2 HP DL360 G5<br>
                                          </div>
                                          The 3 micro servers are my
                                          glusterfs storage and have
                                          been provisioned for virt
                                          storage.<br>
                                        </div>
                                        The 2 DL360 are my processing
                                        machines.<br>
                                        <br>
                                      </div>
                                      Now my 3 gluster hosts are in one
                                      cluster, the volume is in up
                                      status and has been provisioned
                                      for Virt Storage. But the problem
                                      is that my mount point is directed
                                      to one server, so when that server
                                      goes down, the volume storage
                                      domain goes down. I am not sure
                                      whether there is a way of mounting
                                      it by a "volume identity", so when
                                      a server goes down the storage
                                      domain stays up.<br>
                                      <br>
                                    </div>
                                    With my 2 processing hosts, I have
                                    them in one cluster, but I have not
                                    gotten any where with this, as I
                                    want the Virtual machines to use the
                                    gluster volume as storage but use
                                    the processing hosts hardware for
                                    processing power.  <br>
                                    <br>
                                  </div>
                                  I would appreciate any assistance.<br>
                                </div>
                                <br>
                                <fieldset></fieldset>
                                <br>
                              </div>
                            </div>
                            <pre>_______________________________________________
Users mailing list
<a moz-do-not-send="true" href="mailto:Users@ovirt.org" target="_blank">Users@ovirt.org</a>
<a moz-do-not-send="true" href="http://lists.ovirt.org/mailman/listinfo/users" target="_blank">http://lists.ovirt.org/mailman/listinfo/users</a>
</pre>
                          </blockquote>
                          <br>
                        </div>
                      </blockquote>
                    </div>
                    <br>
                  </div>
                </blockquote>
                <br>
              </span></div>
          </blockquote>
        </div>
        <br>
      </div>
    </blockquote>
    <br>
  </body>
</html>

--------------000909020404040603030705--

Sahina Bose

tags

participants (1)