Some more considerations: How much free CPU, memory resources are available on your remaining hypervisors ? If your XenServer pool resource usages are near to their maximum limits, putting one hypervisor into maintenance could very well push the usage over the limits for remaining hypervisors/pool. Check global settings cluster.cpu.allocated.capacity.disablethreshold and cluster.memory.allocated.capacity.disablethreshold. I think their default value is 0.75 or 75% of total. You can increase these limits, or shutdown some non-critical instances running on your remaining hypervisors to see if you can migrate more instances off the hypervisor you are patching.
As a last resort, you could just shutdown the remaining instances and reboot the hypervisor and restart stopped instances once the hypervisor is back ! Yiping On 10/30/15, 6:06 AM, "Jeremy Peterson" <jpeter...@acentek.net> wrote: >I was able to move a couple servers back to Flex-Xen1 and those VM's are >running fine. > >I am tailing /var/log/SMlog I will try to migrate another VM from Xen2 to Xen1 >and see what shows up in the logs. > >Jeremy > > >-----Original Message----- >From: Abhinandan Prateek [mailto:abhinandan.prat...@shapeblue.com] >Sent: Friday, October 30, 2015 12:05 AM >To: users@cloudstack.apache.org >Subject: Re: Unable to put host into maintenance mode. Unable to migrate VM > >The errors are originating on XenServer Flex-Xen1, check the SMlog for clues. >Also check if the VMs on that host are running fine. > > >> On 30-Oct-2015, at 2:11 AM, Jeremy Peterson <jpeter...@acentek.net> wrote: >> >> http://pastebin.com/jpPbsJb4 >> >> I put a host in maintenance mode to apply XenServer patches and it gets all >> but 5 vm's migrated and now if I cancel maintenance mode and try to manually >> move from Flex-Xen1 to Flex-Xen2 I get these errors. >> >> XenServer 6.5 SP1 >> CloudStack 4.5.0 >> >> Advanced Networking >> >> iSCSI storage LUN's w/4 multipaths for primary FreeNAS NFS for >> secondary Jeremy Peterson >> >> > >Find out more about ShapeBlue and our range of CloudStack related services > >IaaS Cloud Design & Build<http://shapeblue.com/iaas-cloud-design-and-build//> >CSForge – rapid IaaS deployment framework<http://shapeblue.com/csforge/> >CloudStack Consulting<http://shapeblue.com/cloudstack-consultancy/> >CloudStack Software >Engineering<http://shapeblue.com/cloudstack-software-engineering/> >CloudStack Infrastructure >Support<http://shapeblue.com/cloudstack-infrastructure-support/> >CloudStack Bootcamp Training Courses<http://shapeblue.com/cloudstack-training/> > >This email and any attachments to it may be confidential and are intended >solely for the use of the individual to whom it is addressed. Any views or >opinions expressed are solely those of the author and do not necessarily >represent those of Shape Blue Ltd or related companies. If you are not the >intended recipient of this email, you must neither take any action based upon >its contents, nor copy or show it to anyone. Please contact the sender if you >believe you have received this email in error. Shape Blue Ltd is a company >incorporated in England & Wales. ShapeBlue Services India LLP is a company >incorporated in India and is operated under license from Shape Blue Ltd. Shape >Blue Brasil Consultoria Ltda is a company incorporated in Brasil and is >operated under license from Shape Blue Ltd. ShapeBlue SA Pty Ltd is a company >registered by The Republic of South Africa and is traded under license from >Shape Blue Ltd. ShapeBlue is a registered trademark.
