What I'm saying is that if your root bridge changed, it would cause all ports (potentially on both switches) to go into blocking and then learning mode. If that happened, it would have killed all of your storage.
________________________________ From: Asai <[email protected]> Sent: Saturday, March 18, 2017 10:53 AM To: [email protected] Subject: RE: 1 Pod Host Offline, All VMs Shut Down Thanks, Simon. But I still don't understand why the VMs that are on host 1 and connected to PS 1 would be affected by a disconnect of another host and storage that they're not dependent on. Will setting up the root switch for STP handle that issue? On March 17, 2017 6:10:05 PM MST, Simon Weller <[email protected]> wrote: >If no network storage path was available, more than likely fencing >would occur. > > >Simon Weller/615-312-6068 > >-----Original Message----- >From: Asai [[email protected]] >Received: Friday, 17 Mar 2017, 7:40PM >To: [email protected] [[email protected]] >Subject: RE: 1 Pod Host Offline, All VMs Shut Down > >Ok, but why would all the VMs shut down? Is that an expected behavior? > >On March 17, 2017 5:15:46 PM MST, Simon Weller <[email protected]> wrote: >>So check your switch logs. It's possible all your switch ports went >>into blocking mode when you lost the interswitch fiber patch. >> >>Simon Weller/615-312-6068 >> >>-----Original Message----- >>From: Asai [[email protected]] >>Received: Friday, 17 Mar 2017, 6:56PM >>To: [email protected] [[email protected]] >>Subject: RE: 1 Pod Host Offline, All VMs Shut Down >> >>Haven't configured that... [facepalm] >> >>On March 17, 2017 4:46:24 PM MST, Simon Weller <[email protected]> >wrote: >>>Which switch is root bridge for spanning tree? >>> >>>Simon Weller/615-312-6068 >>> >>>-----Original Message----- >>>From: Asai [[email protected]] >>>Received: Friday, 17 Mar 2017, 6:29PM >>>To: [email protected] [[email protected]] >>>Subject: Re: 1 Pod Host Offline, All VMs Shut Down >>> >>>Yes, the cable was a fiber cable connecting two switches, one which >>>connects host 1 and PS 1 (NFS share running on host 1), and the other >>>switch connects host 2 and PS 2 (NFS share running on host 2). >>> >>> >>>On 2017-03-17 4:04 PM, Simon Weller wrote: >>>> So was this cable connecting a couple of switches together? I'm >>>confused when you say a single cable was connecting 4 devices, unless >>>there is a switch or multiple switches involved. Is the primary >>storage >>>NFS? >>>> >>>> Simon Weller/615-312-6068 >>>> >>>> -----Original Message----- >>>> From: Asai [[email protected]] >>>> Received: Friday, 17 Mar 2017, 6:00PM >>>> To: [email protected] [[email protected]] >>>> Subject: Re: 1 Pod Host Offline, All VMs Shut Down >>>> >>>> KVM, and the damaged cable connected host 2 and PS 2 back to the >>host >>>1 >>>> and PS 1. Does that give you enough info to work with? >>>> >>>> >>>> On 2017-03-17 3:55 PM, Simon Weller wrote: >>>>> What hypervisor are you using and what did the damaged cable >>>connect? >>>>> >>>>> Simon Weller/615-312-6068 >>>>> >>>>> -----Original Message----- >>>>> From: Asai [[email protected]] >>>>> Received: Friday, 17 Mar 2017, 5:45PM >>>>> To: [email protected] [[email protected]] >>>>> Subject: 1 Pod Host Offline, All VMs Shut Down >>>>> >>>>> Greetings, >>>>> >>>>> I have 2 hosts in a pod, and 3 primary storage shares. I just ran >>>into >>>>> an issue where a cable accidentally got damaged which took host 2 >>>>> offline and primary storage 2 offline, but ALL of my VMs shut down >>>>> spontaneously. Weird, because only half of my VMs are running on >>>host 2 >>>>> and primary storage 2. Even the VMs on host 1 and primary storage >>1 >>>>> shut down. Can anyone shed light on why this would have happened >>>and >>>>> how I can avoid this in the future? >>>>> >>>>> Much thanks, >>>>> Asai >>>>> >>>>> >>>> >> >>-- >>Asai > >-- >Asai -- Asai
