Hello Fabian,
I did some more research, the last working kernel from the Ubuntu Xenial repository is
linux-image-4.10.0-42-generic_4.10.0-42.46~16.04.1_amd64.deb
The next available image linux-image-4.11.0-14-generic_4.11.0-14.20~16.04.1_amd64.deb is not working, I also tried several Ubuntu 4.13 and mainline kernels, none of them is working.
The first working kernel I found is mainline 4.14.1.
I think this commit is the fix for the problem github.com/torvalds/linux/commit/2877cbffb79ed121a6bcc5edbe629d3aba36cd29
Unfortunately the scsi subsystem was heavily refactored from 4.10 to 4.14 so I am unable to isolate a single patch to fix/reproduce the problem.
Are there any plans to upgrade to a newer kernel soon? I am still evaluating the PVE on my lab but need to bring those boxes in production within the next two weeks, so I need to decide weather to go with 5.0, try to patch myself or move to another solution...
Oliver
I'll see about building with that commit included and letting you test. just to confirm, could you test 4.14-rc1 mainline (or was that a typo and this is the one you actually tested?)?