Hi,
we have 3 Windows Server 2019 VMs running on xcp-ng 8.2.1 since a couple of months. We are using a local ZFS Storage (I think the storage is probably not the problem). While Ubuntu/FreeBSD VMs run without issue, the Windows VMs do random restarts approx. every 4-6 weeks - apart from that, they run fine otherwise. I have the impression, that restarts occur more frequently, when there is cpu load (but that could be wrong). There is no error or kernel dump in the windows event logs. I did install the citrix-vm-tools 9.2.3 package, Windows Update is enabled. When the error occurs xl dmesg shows:
(XEN) [2116059.042574] d60v4 Triple fault - invoking HVM shutdown action 3
(XEN) [2116059.042576] *** Dumping Dom60 vcpu#4 state: ***
(XEN) [2116059.042579] ----[ Xen-4.13.4-9.27.1 x86_64 debug=n Not tainted ]----
(XEN) [2116059.042579] CPU: 42
(XEN) [2116059.042580] RIP: 0033:[<00007ffae7ed9aa0>]
(XEN) [2116059.042581] RFLAGS: 0000000000000287 CONTEXT: hvm guest (d60v4)
(XEN) [2116059.042582] rax: 000001d375b62dd0 rbx: 000001d375b62e00 rcx: 000001d375b62dc0
(XEN) [2116059.042583] rdx: 000001d375b62e00 rsi: 0000000000000000 rdi: 000001d375b64000
(XEN) [2116059.042584] rbp: 0000006e841fedf0 rsp: 0000006e841fece0 r8: ba7dc7ea4e7a3d2c
(XEN) [2116059.042584] r9: bbb5ec78748d7131 r10: 41be9084b28bde26 r11: 08c1d1fe828bde7b
(XEN) [2116059.042585] r12: 0000000000000000 r13: 000000000000fdff r14: 000001d39f1e8000
(XEN) [2116059.042585] r15: 0000000000000001 cr0: 0000000080050033 cr4: 00000000001506f8
(XEN) [2116059.042586] cr3: 0000002f78779000 cr2: 0000000000000000
(XEN) [2116059.042586] fsb: 0000000000000000 gsb: 0000006efbfe8000 gss: ffffd080b289d000
(XEN) [2116059.042587] ds: 002b es: 002b fs: 0053 gs: 002b ss: 002b cs: 0033
I would be very grateful, if anyone could point me into the right direction how to solve this issue. Could this be a Guest related driver issue? Is there a way to get a memory dump from that vm when the crash occurs to use windbg and find the driver?
Thanks to all xcp-ng people for their contributions!
Regards,
phipra