Hi, After receiving a number of alerts for VMs hosted on server "jack", I investigated and found the server largely unresponsive. Unfortunately I had no option but to forcibly reboot it, which I did at about 06:47Z It's now 07:01Z and monitoring says everything is back up, except for two customer VMs which are waiting for a LUKS passphrase on their console. This problem was the same as what was experienced with some of the other servers a few months ago. With the months-long gap I had hoped it was some undiagnosed kernel issue which we had got past, but apparently not, as "jack" is on the latest available kernel package. I'm pursuing some ideas about a config change that may help, and I managed to put that into place before "jack" was rebooted - it does require a reboot so if it does help it won't be able to take effect on the others until next reboot. On the other hand it doesn't hurt either, so I've made the same change elsewhere also. If that doesn't fix things then the next line of investigation will be an upgrade of the hypervisor to latest stable release, though that is a rather major undertaking. Apologies for the disruption. It is challenging to debug a problem that can take several months to occur, with no reliable way of triggering it. :( Thanks, Andy -- https://bitfolk.com/ -- No-nonsense VPS hosting