Safe Hibernation

[Alemiz]

Hi,
Im writing simple script what to do after power will be lost and server will run on UPS.
My plan is:
- hibernate all VM
- hibernate node
Or just hibernate node ?
Is it safe ? Wont I loss any data ?

Thanks!

 

[bfwdd]

Hi,
it depends - where is your data stored?
We have similar problems:
We have a 15node cluster using ceph, so it is important to stop all VMs on all hosts, before the storage can be stopped.
Proxmox will shut down all VMs on a single host and then shuts down this host.
So it is possible that some hosts without VMs but with CEPH-OSDs are going down early and hosts with many or slow VMs cant reach their data anymore, which is bad....

 

[Alemiz]

Hi,
it depends - where is your data stored?
We have similar problems:
We have a 15node cluster using ceph, so it is important to stop all VMs on all hosts, before the storage can be stopped.
Proxmox will shut down all VMs on a single host and then shuts down this host.
So it is possible that some hosts without VMs but with CEPH-OSDs are going down early and hosts with many or slow VMs cant reach their data anymore, which is bad....

HI, I have currently no cluster. And data are stored on nodes RAID 1. What do you recommend me ?

 

[bfwdd]

Proxmox will shut down all VMs on a single host so - just shutdown the host.