<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>great, thanks very much<br></div><div><br></div><div data-marker="__SIG_PRE__"><div>cordialement, regards,</div><div><br data-mce-bogus="1"></div><table style="margin: 0px; table-layout: fixed; border: none; width: 345pt; padding: 0px;" data-mce-style="margin: 0px; table-layout: fixed; border: none; width: 345pt; padding: 0px;" width="460" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="margin: 0; font-size: 11px; font-family: Arial,sans-serif; color: #2b3c7a; line-height: 16px; width: 86.25pt; text-align: left;" data-mce-style="margin: 0; font-size: 11px; font-family: Arial,sans-serif; color: #2b3c7a; line-height: 16px; width: 86.25pt; text-align: left;" width="115" valign="top"><a href="https://www.lyra-network.com/" style="border: none; text-decoration: none; width: 100%; display: block; clear: both;" data-mce-href="https://www.lyra-network.com/" data-mce-style="border: none; 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font-family: Arial,sans-serif; color: #2b3c7a; line-height: 18px; font-weight: bold;">Nelson LAMEIRAS</td></tr><tr><td style="font-family: Arial,sans-serif; color: #2b3c7a; font-size: 11px; line-height: 16px;" data-mce-style="font-family: Arial,sans-serif; color: #2b3c7a; font-size: 11px; line-height: 16px;">Ingénieur Systèmes et Réseaux<span style="font-family: Arial,sans-serif; color: #337ab7; font-size: 11px;" data-mce-style="font-family: Arial,sans-serif; color: #337ab7; font-size: 11px;"> / Systems and Networks engineer</span></td></tr><tr><td style="line-height: 16px; font-family: 'Arial',sans-serif; color: #2b3c7a; font-size: 11px;" data-mce-style="line-height: 16px; font-family: 'Arial',sans-serif; color: #2b3c7a; font-size: 11px;"><span style="font-family: Arial,sans-serif; color: #2b3c7a; font-size: 11px;" data-mce-style="font-family: Arial,sans-serif; color: #2b3c7a; font-size: 11px;">Tel: +33 5 32 09 09 70</span></td></tr><tr><td style="line-height: 16px; font-family: 'Arial',sans-serif; 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That option controls the presence of the virtio-balloon device which is not hotpluggable <div><br><blockquote><div><div style="font-family:arial,helvetica,sans-serif;font-size:12pt;color:#000000"><br><div>But when activating/deactivating memory balloning on Cluster (plus MoM Sync on host) I do not really understand what happens "under the hood"<br></div></div></div></blockquote><br>This controls the actual behavior, inflating and deflating of those balloons. That can be done in runtime as it is external to the VM, managed by MOM demon. </div><div><br><blockquote><div><div style="font-family:arial,helvetica,sans-serif;font-size:12pt;color:#000000"><br><div>- Is there a mechanism on host which controls "memory balloning" globally?<br></div><div>- Is it able to change it's behaviour "on the fly" with "MoM Sync" ?</div></div></div></blockquote><br>Yes. You can change the policy/behavior. </div><br><div>HTH,</div><div>michal</div><div><br><blockquote><div><div style="font-family:arial,helvetica,sans-serif;font-size:12pt;color:#000000"><br><div><div>If you have any information, it would be greatly appreciated</div><br><div>cordialement, regards,</div><br><table style="margin:0px;table-layout:fixed;border:none;width:345pt;padding:0px" width="460" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="margin:0;font-size:11px;font-family:Arial,sans-serif;color:#2b3c7a;line-height:16px;width:86.25pt;text-align:left" width="115" valign="top"><a href="https://www.lyra-network.com/" style="border:none;text-decoration:none;width:100%;display:block;clear:both" target="_blank"><element-signature_logo_lyra_115x94.jpg></a><br></td><td style="margin:0;font-size:11px;font-family:Arial,sans-serif;color:#2b3c7a;line-height:16px;width:258.75pt" width="345" valign="top"><table style="margin:0;width:258.75pt;table-layout:fixed;border:none" width="345" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="font-size:16px;font-family:Arial,sans-serif;color:#2b3c7a;line-height:18px;font-weight:bold">Nelson LAMEIRAS</td></tr><tr><td style="font-family:Arial,sans-serif;color:#2b3c7a;font-size:11px;line-height:16px">Ingénieur Systèmes et Réseaux<span style="font-family:Arial,sans-serif;color:#337ab7;font-size:11px"> / Systems and Networks engineer</span></td></tr><tr><td style="line-height:16px;font-family:'Arial',sans-serif;color:#2b3c7a;font-size:11px"><span style="font-family:Arial,sans-serif;color:#2b3c7a;font-size:11px">Tel: +33 5 32 09 09 70</span></td></tr><tr><td style="line-height:16px;font-family:'Arial',sans-serif;color:#2b3c7a;font-size:11px"><a href="mailto:nelson.lameiras@lyra-network.com" style="font-size:11px;font-family:Arial,sans-serif;line-height:16px;text-decoration:none" target="_blank">nelson.lameiras@lyra-network.com</a><br></td></tr><tr><td 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