Suggestion - hibernate/suspeng VMs during restart

[akurzawa]

Suggestion - hibernate/suspeng VMs during restart - instead of shutting down them

[maxcuttins]

@akurzawa said in Suggestion - hibernate/suspeng VMs during restart:

Suggestion - hibernate/suspeng VMs during restart - instead of shutting down them

restart of the host?

[akurzawa]

@maxcuttins yes

[maxcuttins]

@akurzawa said in Suggestion - hibernate/suspeng VMs during restart:

@maxcuttins yes

It's probably a not so good idea.

Admins restart a host only when there is some kind of manteinance to do.
This means 2 things:

1. long time before it come up again
2. the host'll restart with different feature than before
   (increased due to a new feature, reduced due to a regression or a security fix)

Having VMs suspended or hybernated for so long and having them to restart with a different host could be not such a good idea. Even if probably this is not so different than move them to a updated Host.

[olivierlambert]

Google is always a great friend: https://xen-orchestra.com/blog/xenserver-emergency-shutdown/

edit: screenshots are outdated, but the feature is still here (emergency shutdown)

[akurzawa]

if you don't ask, you won't find out

[olivierlambert]

To be fair, it's not in the XO doc. We'll correct that!

[maxcuttins]

This will suspend and hybernate all the VMs.
But not during a reboot.
Instead allow you to halt all hosts

[xisco]

@akurzawa hi, I've done it when installing patches before rebooting no problem so far, but as said here maybe is not a good practice.

[akurzawa]

@xisco is this XCP thing? or citrix?

about pausing VM - this is default behavior in Hyper-V server and is work flawless - restarting server prior to some MS patching - all vm are going nicely to sleep and after boot resumes accordingly.