<div dir="auto"><div><br><div class="gmail_extra"><br><div class="gmail_quote">Il 14/Gen/2017 13:08, "Martin Perina" <<a href="mailto:mperina@redhat.com">mperina@redhat.com</a>> ha scritto:<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Hi,<br><br></div><div class="gmail_extra">engine executes power management (fencing) operation using different host in the same cluster/DC as target host reside. It's an oVirt requirement that each host in the same cluster and data center is able to connect to power management deviced of all other hosts in the same cluster/DC.<div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline">​ <br><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline">Here's simplified flow for defaults (fence proxy may be selected in the same cluster or DC)<br><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">1. Find all existing hosts in the same cluster​ which don't have connection issues (status Up, Maintenance, NonOperational for a reason different than network issues)<br></div></div></div></blockquote></div></div></div><div dir="auto"><br></div><div dir="auto">Ok</div><div dir="auto"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"></div></div></div></blockquote></div></div></div><div dir="auto"><br></div><div dir="auto"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">6.
Select first host in Up (if no host is Up, then pick any other host, if
no host found then fail and exit) and try to execute fence
operation<br></div></div></div></div></blockquote></div></div></div><div dir="auto"><br></div><div dir="auto">Ok.</div><div dir="auto">I presume that from the list of step 6 you exclude the hosts you got from step 1 that are a subset of it.</div><div dir="auto">Otherwise you risk to try fence from an host that already failed three times to do so...</div></div>