Problems with "snaps" between 03:51 and 06:41 today

Hi, Around 04:00Z I received alerts that host "snaps" had unexpectedly rebooted. Upon investigating it had indeed reset itself for reasons unknown starting at about 03:51Z. It wasn't a full power cycle nor a graceful shutdown, it just reset itself with no useful log output. Whilst all VPSes did seem to boot up okay, unfortunately it soon became clear that "snaps" had booted into an earlier version of the hypervisor - one without the recent Spectre/Meltdown (and other) security fixes that were deployed last week. At this point customer VPSes on "snaps" were operating normally again but things could not be left in that insecure state, so after some time spent investigating things, between 06:17Z and 06:37Z I did a clean shut down and booted into the correct version of the hypervisor again. I have since established why the incorrect boot entry was automatically chosen¹ and have fixed that problem. I have not worked out what caused "snaps" to reset itself. We have been having some stability issues with "snaps" over the last 6 months and I think we are going to have to decommission it. I will come up with a plan and contact customers on "snaps" directly later today, but in the mean time if your VPS is on "snaps" and you wish for it to be moved to another server as a priority please contact support(a)bitfolk.com and we'll get that done. It will involve shutting your VPS down and booting it a few seconds later on the target server. None of the details of your VPS will change. Please indicate what sort of time of day would be best for that to happen. Apologies for the disruption this will have caused you. Cheers, Andy ¹ The newer hypervisor package ships an override to make sure that the server boots into the hypervisor by default at the next boot. This is meant to make it easier for people, but all it did was override my actual intentionally-set default boot option with one that wasn't suitable. This was not noticed in testing because the testing machines had no other versions of the hypervisor present. -- https://bitfolk.com/ -- No-nonsense VPS hosting