{"id":19721,"date":"2021-11-24T16:26:35","date_gmt":"2021-11-24T15:26:35","guid":{"rendered":"https:\/\/info.gwdg.de\/news\/en\/?p=19721"},"modified":"2021-12-01T12:38:20","modified_gmt":"2021-12-01T11:38:20","slug":"malfunction-network-interruptions-of-some-vmware-vms","status":"publish","type":"post","link":"https:\/\/info.gwdg.de\/news\/malfunction-network-interruptions-of-some-vmware-vms\/","title":{"rendered":"Malfunction: Network Interruptions of some VMware VMs"},"content":{"rendered":"<p><strong>Message-Id<\/strong>: 202111241624<br \/>\n<strong>Period<\/strong>: 23.11.2021, starting 1:30 PM<br \/>\n<strong>Betroffen<\/strong>: Individual VMs<br \/>\n<strong>Auswirkung<\/strong>: Network interruptions of some VMware VMs<\/p>\n<p>Since 1:30PM yesterday 23.11. a few VMs are subject to network interruptions. This is seen<br \/>\nas either repetitive short interrupts or as<br \/>\ncomplete network outage by the VM. From Linux the interrupts are logged by the kernel as<br \/>\n&#8222;tx hang&#8220;. We can provide a workaround for<br \/>\nindividual VM network failures but we can not guarantee the success of this workaround.<\/p>\n<p>As of now we can not single out the root cause of this error but are busy trying to find<br \/>\nit. Due to the nature of the error there is<br \/>\ncurrently no way neither from the VMware environment nor from dedicated VMs in the<br \/>\nnetworks to detect, reproduce or diagnose the error properly.<\/p>\n<p><strong>Update:<\/strong> We suspect the reason to be a bug in the firmware of the network cards. To test this we updated the firmware on some network cards to see if this fixes the issue.<\/p>\n<p><strong>Update<\/strong>:<br \/>\nCurrently the interrupts seemed to have stopped, unfortunately we still haven&#8217;t found the<br \/>\ncause.<br \/>\nTogether with VMware we are working on the analysis of the failures.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Message-Id: 202111241624 Period: 23.11.2021, starting 1:30 PM Betroffen: Individual VMs Auswirkung: Network interruptions of some VMware VMs Since 1:30PM yesterday 23.11. a few VMs are subject to network interruptions. This is seen as either repetitive short interrupts or as complete network outage by the VM. From Linux the interrupts are logged by the kernel as &#8230; <a title=\"Malfunction: Network Interruptions of some VMware VMs\" class=\"read-more\" href=\"https:\/\/info.gwdg.de\/news\/malfunction-network-interruptions-of-some-vmware-vms\/\" aria-label=\"Mehr Informationen \u00fcber Malfunction: Network Interruptions of some VMware VMs\">Weiterlesen<\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,2,9],"tags":[],"class_list":["post-19721","post","type-post","status-publish","format-standard","hentry","category-all","category-betriebsmeldungen","category-operating-news"],"_links":{"self":[{"href":"https:\/\/info.gwdg.de\/news\/wp-json\/wp\/v2\/posts\/19721","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/info.gwdg.de\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/info.gwdg.de\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/info.gwdg.de\/news\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/info.gwdg.de\/news\/wp-json\/wp\/v2\/comments?post=19721"}],"version-history":[{"count":4,"href":"https:\/\/info.gwdg.de\/news\/wp-json\/wp\/v2\/posts\/19721\/revisions"}],"predecessor-version":[{"id":19792,"href":"https:\/\/info.gwdg.de\/news\/wp-json\/wp\/v2\/posts\/19721\/revisions\/19792"}],"wp:attachment":[{"href":"https:\/\/info.gwdg.de\/news\/wp-json\/wp\/v2\/media?parent=19721"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/info.gwdg.de\/news\/wp-json\/wp\/v2\/categories?post=19721"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/info.gwdg.de\/news\/wp-json\/wp\/v2\/tags?post=19721"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}