<html><header></header><body><div style="font-family: Tahoma; font-size: 14px; color: #000000;">Thanks to all your suggestions, I now have the systems with stonith configured on ipmi.</div>
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<div style="font-family: Tahoma; font-size: 14px; color: #000000;">Two questions:</div>
<div style="font-family: Tahoma; font-size: 14px; color: #000000;">- how can I simulate a stonith situation to check that everything is ok?<br />- considering that I have both nodes with stonith against the other node, once the two nodes can communicate, how can I be sure the two nodes will not try to stonith each other?</div>
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<div style="font-family: Tahoma; font-size: 14px; color: #000000;">:)<br />Thanks!<br />Gabriele<br /><br />
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<div><span style="font-size: 14px; font-family: Helvetica;"><strong>Sonicle S.r.l. </strong>: <a href="http://www.sonicle.com/" target="_new">http://www.sonicle.com</a></span></div>
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<br /><hr /><br /><br /><span style="font-family: Arial, Helvetica, sans-serif; font-size: small;"><strong>Da:</strong> Gabriele Bulfon <gbulfon@sonicle.com><br /><strong>A:</strong> Cluster Labs - All topics related to open-source clustering welcomed <users@clusterlabs.org><br /><strong>Data:</strong> 29 luglio 2020 14.22.42 CEST<br /><strong>Oggetto:</strong> Re: [ClusterLabs] Antw: [EXT] Stonith failing<br /></span><br /><br />
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<div style="font-family: Tahoma; font-size: 14px; color: #000000;">It is a ZFS based illumos system.</div>
<div style="font-family: Tahoma; font-size: 14px; color: #000000;">I don't think SBD is an option.</div>
<div style="font-family: Tahoma; font-size: 14px; color: #000000;">Is there a reliable ZFS based stonith?</div>
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<div style="font-family: Tahoma; font-size: 14px; color: #000000;">Gabriele<br /><br />
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<div><span style="font-size: 14px; font-family: Helvetica;"><strong>Sonicle S.r.l. </strong>: <a href="http://www.sonicle.com/" target="_new">http://www.sonicle.com</a></span></div>
<div><span style="font-size: 14px; font-family: Helvetica;"><strong>Music: </strong><a href="http://www.gabrielebulfon.com/" target="_new">http://www.gabrielebulfon.com</a></span></div>
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<br /><hr /><br /><br /><span style="font-family: Arial, Helvetica, sans-serif; font-size: small;"><strong>Da:</strong> Andrei Borzenkov <arvidjaar@gmail.com><br /><strong>A:</strong> Cluster Labs - All topics related to open-source clustering welcomed <users@clusterlabs.org><br /><strong>Data:</strong> 29 luglio 2020 9.46.09 CEST<br /><strong>Oggetto:</strong> Re: [ClusterLabs] Antw: [EXT] Stonith failing<br /></span><br /><br />
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<div class="gmail_attr" dir="ltr">On Wed, Jul 29, 2020 at 9:01 AM Gabriele Bulfon <<a href="mailto:gbulfon@sonicle.com">gbulfon@sonicle.com</a>> wrote:</div>
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<div style="font-family: Tahoma; font-size: 14px; color: #000000;">That one was taken from a specific implementation on Solaris 11.</div>
<div style="font-family: Tahoma; font-size: 14px; color: #000000;">The situation is a dual node server with shared storage controller: both nodes see the same disks concurrently.</div>
<div style="font-family: Tahoma; font-size: 14px; color: #000000;">Here we must be sure that the two nodes are not going to import/mount the same zpool at the same time, or we will encounter data corruption:</div>
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<div class="gmail_default" style="font-family: arial,sans-serif;">ssh based "stonith" cannot guarantee it.</div>
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<div style="font-family: Tahoma; font-size: 14px; color: #000000;">node 1 will be perferred for pool 1, node 2 for pool 2, only in case one of the node goes down or is taken offline the resources should be first free by the leaving node and taken by the other node.</div>
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<div style="font-family: Tahoma; font-size: 14px; color: #000000;">Would you suggest one of the available stonith in this case?</div>
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<div class="gmail_default" style="font-family: arial,sans-serif;">IPMI, managed PDU, SBD ...</div>
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<div class="gmail_default" style="font-family: arial,sans-serif;">In practice, the only stonith method that works in case of complete node outage including any power supply is SBD.</div>
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