when change the C storage to maintance , group normally ,no exception occured.
when stop the NFS on C storage , all vm stoped and some hypervisors rebooted by cloudstack-agent. In C storage ,only one file that for VMC1, there aren’t disk image for other vms , so it stoped all vms to be beyond comprehension. > 在 2017年3月22日，11:39，Tutkowski, Mike <mike.tutkow...@netapp.com> 写道： > > Do you know if your other VMs shut down when you stopped the NFS service or > when you put the primary storage into maintenance mode? > > Putting a primary storage in maintenance mode should only shut down VMs that > have one or more disks running from that primary storage. > > For example, if you had your root disk on primary storage A and a data disk > on primary storage C and you put primary storage C into maintenance mode, > then this VM will be shut down. > > On 3/21/17, 9:12 PM, "Gust" <digitalg...@163.com> wrote: > > Our cloudstack (4.9.1) group have 4 primary storage named as A/B/C/D, > almost all vm disk image in A storage. only one vm (name VMC1) disk image in > C storage. > > yesterday , > we close VMC1 and change the C storage to maintance state, > then stop the NFS service in C storage , > after that , all vm stoped , whatever vm disk image in A or in C, > we were stunned. > > In cloudstack website , we found follow doc , but it descripte stops all > VMs stored on C storage device in my situation, what happenned ? > > Primary Storage Outage and Data Loss¶ > When a primary storage outage occurs the hypervisor immediately stops all > VMs stored ——> on that storage device <—— . Guests that are > marked for HA will be restarted as soon as practical when the primary storage > comes back on line. With NFS, the hypervisor may allow the virtual machines > to continue running depending on the nature of the issue. For example, an NFS > hang will cause the guest VMs to be suspended until storage connectivity is > restored.Primary storage is not designed to be backed up. Individual volumes > in primary storage can be backed up using snapshots. > > > > >
