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<p>Gary,</p>
<p>I hope you are doing well. I was trying to understand the logic
in this code when using datastore_regex. It seems even if you set
that parameter and it matches some N datastores, the "free
capacity " being returned by nova-compute is only from a
single/best datastore.</p>
<p>def get_available_datastores(session, cluster=None,
datastore_regex=None):<br>
"""Get the datastore list and choose the first local
storage."""<br>
ds = session._call_method(vutil,<br>
"get_object_property",<br>
cluster,<br>
"datastore")</p>
<p>...<br>
...<br>
</p>
<p> if _is_datastore_valid(propdict, datastore_regex,
allowed_ds_types):<br>
new_ds = ds_obj.Datastore(<br>
ref=obj_content.obj,<br>
name=propdict['summary.name'],<br>
capacity=propdict['summary.capacity'],<br>
freespace=propdict['summary.freeSpace'])<br>
# favor datastores with more free space<br>
if (best_match is None or<br>
new_ds.freespace > best_match.freespace):<br>
best_match = new_ds<br>
<br>
return best_match</p>
<p>The issue we are seeing is a customer has for example 5 x 10 GB
data stores (DS1,..DS5.) For whatever reason , DS1 was filled
more fully and once it hit close to 100% no new instances could
launch as the were blocked by the Nova DiskFilter. I know we can
use the disk_allocation to "fool" this but why is not using to
total cumulative storage as opposed to the one with most free or
first one. I am wondering if there is some configuration issue. If
it is supposed to use best_match, should that dynamically change
among the matched regex Datastore to the one with most free space?
Could it be it is somehow skipping the "best_match" and always
using " first local storage"</p>
<p>I appreciate any suggestions or comments you have.</p>
<p>Keith<br>
</p>
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<p class="MsoNormal"><span
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Berger</span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Arial",sans-serif;background:white">Master
Software Engineer</span><span
style="font-size:9.0pt;font-family:"Arial",sans-serif"><br>
<span style="background:white">SUSE</span></span></p>
<span
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470.237.2012<br>
(M)+1 404.664.9610<br>
<a class="moz-txt-link-abbreviated" href="mailto:keith.berger@suse.com">keith.berger@suse.com</a></span>
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