Yes, the VMs will be stopped if storage fails. ________________________________ From: Asai <[email protected]> Sent: Friday, March 24, 2017 3:12 PM To: [email protected] Subject: Re: 1 Pod Host Offline, All VMs Shut Down
OK, thanks, Simon. That makes sense, after brushing up on STP again, I configured a root switch where it should be, and hopefully that would have solved the problem. So, in Cloudstack, VMs will just shut down if storage is cut off? On 2017-03-18 4:00 PM, Simon Weller wrote: > 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 >
