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    Hi,<br>
    <br>
    Great! Nice to hear that the problem area is found. Can I download
    the updated source? Or can you provide me with the patch on the
    source file? Then I'm able to test it.<br>
    <br>
    Regards,<br>
    Rob van der Wal<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 6/12/19 3:43 PM, Lars Ellenberg
      wrote:<br>
    </div>
    <blockquote type="cite" cite="mid:20190612134331.GU5803@soda.linbit">
      <pre class="moz-quote-pre" wrap="">On Wed, Jun 12, 2019 at 10:39:14AM +0200, Joel Colledge wrote:
</pre>
      <blockquote type="cite">
        <pre class="moz-quote-pre" wrap="">Hi Rob,

This message indicates that mounting with DAX is failing here:
<a class="moz-txt-link-freetext" href="https://github.com/openSUSE/kernel/blob/SLE12-SP4/drivers/dax/super.c#L131">https://github.com/openSUSE/kernel/blob/SLE12-SP4/drivers/dax/super.c#L131</a>

But DRBD performs the corresponding check here:
<a class="moz-txt-link-freetext" href="https://github.com/LINBIT/drbd-9.0/blob/drbd-9.0.18-1/drbd/drbd_dax_pmem.c#L57">https://github.com/LINBIT/drbd-9.0/blob/drbd-9.0.18-1/drbd/drbd_dax_pmem.c#L57</a>
</pre>
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      <pre class="moz-quote-pre" wrap="">
Hm.
Unfortunately ((unsigned long)-ENOTSUP &lt; 1) is false,
we simply did not notice error returns :-(
Fixed now.

Still, a block device claiming to support it,
but then returning "sorry, not supported"
once you actually try to use it, is ... not very friendly either.

</pre>
      <blockquote type="cite">
        <blockquote type="cite">
          <pre class="moz-quote-pre" wrap="">[525370.955135] dm-16: error: dax access failed (-95)
</pre>
        </blockquote>
      </blockquote>
      <pre class="moz-quote-pre" wrap="">
</pre>
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    <br>
    <div class="moz-signature">-- <br>
      <div><font face="Arial">Rob van der Wal</font></div>
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