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    <div>sd 1:0:0:0: reservation conflict<br>
      <br>
      That's the cause of the error in the guest. You'll have to track
      the error<br>
      to ESX's management domain. See the logs.<br>
      <br>
      Does this error come repeatedly? This error is only a problem for
      o2hb<br>
      if it continues for the next 60 secs. Else it can be ignored.<br>
      <br>
      On 12/14/2010 07:20 AM, brad hancock wrote:</div>
    <blockquote
      cite="mid:AANLkTimj-qnVUCGmaDhWUoAVwRExzwC8Qhss3CX-tL4W@mail.gmail.com"
      type="cite">The issue is starting to come up again. Both machines
      are logging the error a couple of minutes apart from each other.
      <div><br>
        <div>sd 1:0:0:0: reservation conflict</div>
        <div>Dec 13 16:40:07 mdcvmsmes01 kernel: [295051.378262] sd
          1:0:0:0: [sdb] Result: hostbyte=DID_OK d</div>
        <div>Dec 13 16:40:07 mdcvmsmes01 kernel: [295051.378347]
          end_request: I/O error, dev sdb, sector 173</div>
        <div>Dec 13 16:40:07 mdcvmsmes01 kernel: [295051.378694]
          (0,1):o2hb_bio_end_io:225 ERROR: IO Error -</div>
        <div>Dec 13 16:40:07 mdcvmsmes01 kernel: [295051.379055]
          (1897,1):o2hb_do_disk_heartbeat:753 ERROR:</div>
      </div>
      <div><br>
      </div>
      <div>Should I open a bug report? Who with, VMware or Oracle?</div>
      <div><br>
      </div>
      <div><br>
      </div>
      <div><br>
        <div class="gmail_quote">On Sun, Dec 12, 2010 at 9:25 AM, brad
          hancock <span dir="ltr">&lt;<a moz-do-not-send="true"
              href="mailto:braddhancock@gmail.com">braddhancock@gmail.com</a>&gt;</span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
            0.8ex; border-left: 1px solid rgb(204, 204, 204);
            padding-left: 1ex;">Kevin,
            <div>I modified the VMFS&nbsp;virtual&nbsp;disk to Independent, and I
              haven't seen the issue since the change Friday morning. I
              noticed this didn't work for you. I will continue to watch
              it and let the list know. The issue I saw after several
              weeks was the data was not in sync. Two nodes saw
              different data on the same OCFS2 drive.&nbsp;</div>
            <div><br>
            </div>
            <div>We have Vsphere 4.1, and HP EVA 3000 SAN. &nbsp;</div>
            <div><br>
            </div>
            <div>Thanks,</div>
            <div>
              <div class="h5">
                <div><br>
                </div>
                <div><br>
                  <br>
                  <div class="gmail_quote">On Sat, Dec 11, 2010 at 10:41
                    AM, <span dir="ltr">&lt;<a moz-do-not-send="true"
                        href="mailto:kevin@utahsysadmin.com"
                        target="_blank">kevin@utahsysadmin.com</a>&gt;</span>
                    wrote:<br>
                    <blockquote class="gmail_quote" style="margin: 0pt
                      0pt 0pt 0.8ex; border-left: 1px solid rgb(204,
                      204, 204); padding-left: 1ex;">
                      <div>On Fri, 10 Dec 2010 06:26:06 -0800, <a
                          moz-do-not-send="true"
                          href="mailto:ocfs2-users-request@oracle.com"
                          target="_blank">ocfs2-users-request@oracle.com</a>
                        wrote:<br>
                        &gt;<br>
                        &gt; My setup has the SCSI controller set to
                        Physical so the guest can be on<br>
                        &gt; different hosts, but I do not have the disk
                        setup as Independent. I am<br>
                        &gt; going<br>
                        &gt; to change that setting in VMware and see if
                        it makes a difference.<br>
                        &gt;<br>
                      </div>
                      <div>&gt; &gt; [2037805.922718] end_request: I/O
                        error, dev sdb, sector 1735<br>
                        &gt; &gt; [2037805.922974]
                        (0,0):o2hb_bio_end_io:225 ERROR: IO Error -5<br>
                        &gt; &gt; [2037805.923370]
                        (27506,0):o2hb_do_disk_heartbeat:753 ERROR:
                        status =<br>
                        -5<br>
                        <br>
                      </div>
                      Brad,<br>
                      <br>
                      I have had the same issue for over a year on ESX
                      3.5 as well as on vSphere<br>
                      4.0. &nbsp;I have not tried yet on 4.1. &nbsp;The error
                      occurs when I put the shared<br>
                      disk on either SATA or FC LUNs on our SAN. &nbsp;It
                      also doesn't matter if the<br>
                      virtual machines are on the same physical host or
                      not (with independent<br>
                      disks). &nbsp;The only problem that has come from it is
                      the occasional reboot of<br>
                      one of the VMs, which for me is tolerable. &nbsp;I keep
                      hoping to upgrade to a<br>
                      new SAN thinking that might fix it. &nbsp;The vSphere
                      4.0 release IOPS<br>
                      capability is higher than the SAN (it's 5 years
                      old) so I didn't think it<br>
                      was VMware's fault. &nbsp;If you have fairly new
                      hardware, maybe there is a real<br>
                      bug somewhere. &nbsp;I don't get I/O errors in any of
                      my other implementations<br>
                      on this SAN. &nbsp;I sent a post like yours to the list
                      when I first built it,<br>
                      but never opened a bug report with either OCFS or
                      VMware. &nbsp;If you create a<br>
                      bug report I could add information from my
                      implementation as well. &nbsp;(I<br>
                      actually have two of these setups and they both
                      have the same errors.)<br>
                      <br>
                      Of course, if you find a solution, please post
                      that as well.<br>
                      <br>
                      Thanks,<br>
                      Kevin<br>
                      <br>
                      <br>
                    </blockquote>
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                  <br>
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          </blockquote>
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        <br>
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      <pre wrap="">
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