https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231117
--- Comment #11 from Kristian K. Christensen <k...@duckpond.dk> --- (In reply to Allan Jude from comment #10) I'll give it a shot, but expect it to take a little while to get the output. Let me quickly explain: Currently, the only thing that stops doing io is our bhyve instances running anything 11.2 or newer. (11.1 rarely ever have issues, though it *does* happen, see Niels' comment on how it differs). However, it's the entire instance that stops doing io. The zvol simply receives no updates from here on out. Regretably, on 11.2+, it's mostly on production vms we can effectively reproduce it often enough to debug on it, so we tend to roll them back after testing. I can reproduce on test vms, but they crash more infrequently and thus it could be a long wait. Furthermore, ALL writes stop and any process that wants to write to anything, stalls. This easily gives me a pid to debug with, but very little access to run commands on the vm. The only fix is to kill the bhyve pid and start it up again. We can run 11.2+ on the hypervisor, it's only running 11.2+ inside the VM that causes the hang. VMs running UFS do not hang. I'm going to leave a couple of sessions logged in and run procstat and ps fairly often, to keep them in memory, but I suspect it can take me a little bit to get the required output. I'll get back to you, I'm going to assume zfskern is the most interesting pid to get output from, but if any random that can't write will do, let me know. -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ freebsd-virtualization@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization To unsubscribe, send any mail to "freebsd-virtualization-unsubscr...@freebsd.org"
