HA is enabled at the pool level. Read this blog post I wrote 9 years ago but still relevant: https://xen-orchestra.com/blog/xenserver-and-vm-high-availability/

Also something to keep in mind: It's not only about NUMA (which is different since 2nd Epyc gen, as they have all memory channels on an IO-Die and only split the caches now), it's also about memory bandwith! So it adds more complexity and depends on the needs of your workload. If it benefits from high memory bandwith, a 2nd socket doubles it (technically)!

I updated XCP-ng to 8.2.1 yesterday. I will write if issue not gone.

@olivierlambert Yes, make sense

There's ongoing effort to avoid opening file descriptors, to avoid this situation. I'll consult whether the current patches avoid this situation in template-export / vm-import https://github.com/xapi-project/xen-api/pull/4877 snwoods opened this pull request in xapi-project/xen-api closed CP-32622: avoid using select and instead use epoll #4877

Thanks for the feedback @nvs Glad to see we fixed those issues!

@fdrcrtl @andSmv @olivierlambert Bump, ty

Hi, "Native" in Xen context doesn't mean anything since the Dom0 is already a VM. So even running Docker in the dom0 won't be "native" RunX is still tech preview yes. It doesn't answer all the question. What do you want to achieve functionally speaking?

Ah thanks for the feedback! That might help others

@Ajmind-0 Well, well, I switched to the snmp connection method and it worked just fine. Um... Thank you for your pointer.

Don't worry, I don't blame you, but the people taking the decision to pay or not

You are welcome! Without PV drivers, it will be slower, but probably enough until you migrate the app to a more recent Windows version Enjoy XCP-ng!

@ravenet This is the /var/log/xensource.log when I test watchdog until VM starts again on the vm ID:1938f572-4951-a77f-48ce-9131c07940d4 Can you understand this process with the log? Can you help me understand? Jan 21 09:11:25 mercurio xenopsd-xc: [debug||5 ||xenops_server] Received an event on managed VM 1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:11:25 mercurio xenopsd-xc: [debug||5 |queue|xenops_server] Queue.push ["VM_check_state","1938f572-4951-a77f-48ce-9131c07940d4"] onto 1938f572-4951-a77f-48ce-9131c07940d4:[ ] Jan 21 09:11:25 mercurio xenopsd-xc: [debug||19 ||xenops_server] Queue.pop returned ["VM_check_state","1938f572-4951-a77f-48ce-9131c07940d4"] Jan 21 09:11:25 mercurio xenopsd-xc: [debug||19 |events|xenops_server] Task 83139 reference events: ["VM_check_state","1938f572-4951-a77f-48ce-9131c07940d4"] Jan 21 09:11:25 mercurio xenopsd-xc: [debug||19 |events|xenops_server] VM 1938f572-4951-a77f-48ce-9131c07940d4 is not requesting any attention Jan 21 09:11:25 mercurio xenopsd-xc: [debug||19 |events|xenops_server] VM_DB.signal 1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:11:25 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] Processing event: ["Vm","1938f572-4951-a77f-48ce-9131c07940d4"] Jan 21 09:11:25 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] xenops event on VM 1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:11:25 mercurio xenopsd-xc: [debug||167488 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops_server] VM.stat 1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:11:25 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] xenopsd event: processing event for VM 1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:11:25 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] xenopsd event: Updating VM 1938f572-4951-a77f-48ce-9131c07940d4 domid 21 guest_agent Jan 21 09:12:23 mercurio xenopsd-xc: [debug||5 ||xenops_server] Received an event on managed VM 1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||5 |queue|xenops_server] Queue.push ["VM_check_state","1938f572-4951-a77f-48ce-9131c07940d4"] onto 1938f572-4951-a77f-48ce-9131c07940d4:[ ] Jan 21 09:12:23 mercurio xenopsd-xc: [debug||13 ||xenops_server] Queue.pop returned ["VM_check_state","1938f572-4951-a77f-48ce-9131c07940d4"] Jan 21 09:12:23 mercurio xenopsd-xc: [debug||13 |events|xenops_server] Task 83143 reference events: ["VM_check_state","1938f572-4951-a77f-48ce-9131c07940d4"] Jan 21 09:12:23 mercurio xenopsd-xc: [debug||7 ||xenstore_watch] xenstore unwatch path=/vm/1938f572-4951-a77f-48ce-9131c07940d4/rtc/timeoffset token=xenopsd-xc:domain-21 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||13 |events|xenops_server] VM.reboot 1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||13 |events|xenops_server] Performing: ["VM_hook_script",["1938f572-4951-a77f-48ce-9131c07940d4","VM_pre_destroy","hard-reboot"]] Jan 21 09:12:23 mercurio xenopsd-xc: [debug||13 |events|xenops_server] Performing: ["Best_effort",["VM_pause","1938f572-4951-a77f-48ce-9131c07940d4"]] Jan 21 09:12:23 mercurio xenopsd-xc: [debug||13 |events|xenops_server] VM.pause 1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||13 |events|xenops_server] VM_DB.signal 1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||13 |events|xenops_server] Performing: ["VM_destroy_device_model","1938f572-4951-a77f-48ce-9131c07940d4"] Jan 21 09:12:23 mercurio xenopsd-xc: [debug||13 |events|xenops_server] VM.destroy_device_model 1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:12:23 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] Processing event: ["Vm","1938f572-4951-a77f-48ce-9131c07940d4"] Jan 21 09:12:23 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] xenops event on VM 1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||13 |events|xenops] About to stop varstored for domain 21 (1938f572-4951-a77f-48ce-9131c07940d4) Jan 21 09:12:23 mercurio xenopsd-xc: [ warn||13 |events|xenops_sandbox] Can't stop varstored for 21 (1938f572-4951-a77f-48ce-9131c07940d4): /var/run/xen/varstored-root-21 does not exist Jan 21 09:12:23 mercurio xenopsd-xc: [debug||167496 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops_server] VM.stat 1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:12:23 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] xenopsd event: ignoring event for VM 1938f572-4951-a77f-48ce-9131c07940d4: metadata has not changed Jan 21 09:12:23 mercurio xenopsd-xc: [debug||13 |events|xenops_server] Performing: ["Parallel",["1938f572-4951-a77f-48ce-9131c07940d4","VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4",[["VBD_unplug",[["1938f572-4951-a77f-48ce-9131c07940d4","xvda"],true]],["VBD_unplug",[["1938f572-4951-a77f-48ce-9131c07940d4","xvdd"],true]]]]] Jan 21 09:12:23 mercurio xenopsd-xc: [debug||13 |events|xenops_server] begin_Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4) Jan 21 09:12:23 mercurio xenopsd-xc: [debug||13 |events|xenops_server] queue_atomics_and_wait: Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4): chunk of 2 atoms Jan 21 09:12:23 mercurio xenopsd-xc: [debug||13 |queue|xenops_server] Queue.push ["Atomic",["VBD_unplug",[["1938f572-4951-a77f-48ce-9131c07940d4","xvda"],true]]] onto Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4).chunk=0.atom=0:[ ] Jan 21 09:12:23 mercurio xenopsd-xc: [debug||13 |queue|xenops_server] Queue.push ["Atomic",["VBD_unplug",[["1938f572-4951-a77f-48ce-9131c07940d4","xvdd"],true]]] onto Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4).chunk=0.atom=1:[ ] Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 ||xenops_server] Queue.pop returned ["Atomic",["VBD_unplug",[["1938f572-4951-a77f-48ce-9131c07940d4","xvda"],true]]] Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 ||xenops_server] Queue.pop returned ["Atomic",["VBD_unplug",[["1938f572-4951-a77f-48ce-9131c07940d4","xvdd"],true]]] Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops_server] Task 83144 reference Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4): ["Atomic",["VBD_unplug",[["1938f572-4951-a77f-48ce-9131c07940d4","xvda"],true]]] Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops_server] Task 83145 reference Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4): ["Atomic",["VBD_unplug",[["1938f572-4951-a77f-48ce-9131c07940d4","xvdd"],true]]] Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops_server] VBD.unplug 1938f572-4951-a77f-48ce-9131c07940d4.xvda Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops_server] VBD.unplug 1938f572-4951-a77f-48ce-9131c07940d4.xvdd Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] adding device cache for domid 21 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] VM = 1938f572-4951-a77f-48ce-9131c07940d4; VBD = xvda; Device is not surprise-removable (ignoring and removing anyway) Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] Device.Generic.hard_shutdown_request frontend (domid=21 | kind=vbd | devid=768); backend (domid=0 | kind=vbd3 | devid=768) Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-write /local/domain/0/backend/vbd3/21/768/online = 0 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] VM = 1938f572-4951-a77f-48ce-9131c07940d4; VBD = xvdd; Device is not surprise-removable (ignoring and removing anyway) Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] Device.Generic.hard_shutdown about to blow away frontend Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] Device.Generic.hard_shutdown_request frontend (domid=21 | kind=vbd | devid=5696); backend (domid=0 | kind=vbd3 | devid=5696) Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /local/domain/21/device/vbd/768 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-write /local/domain/0/backend/vbd3/21/5696/online = 0 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /xenops/domain/21/device/vbd/768 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] Device.Generic.hard_shutdown about to blow away frontend Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /local/domain/21/device/vbd/5696 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /xenops/domain/21/device/vbd/5696 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] Device.Generic.hard_shutdown about to blow away backend and error paths Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] Device.rm_device_state frontend (domid=21 | kind=vbd | devid=768); backend (domid=0 | kind=vbd3 | devid=768) Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /xenops/domain/21/device/vbd/768 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /local/domain/21/device/vbd/768 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /local/domain/0/backend/vbd3/21/768 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /local/domain/0/error/backend/vbd3/21 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /local/domain/21/error/device/vbd/768 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] Device.Vbd.release frontend (domid=21 | kind=vbd | devid=768); backend (domid=0 | kind=vbd3 | devid=768) Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /local/domain/0/backend/vbd3/21/768 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|hotplug] Hotplug.release: frontend (domid=21 | kind=vbd | devid=768); backend (domid=0 | kind=vbd3 | devid=768) Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|hotplug] Hotplug.wait_for_unplug: frontend (domid=21 | kind=vbd | devid=768); backend (domid=0 | kind=vbd3 | devid=768) Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|hotplug] Synchronised ok with hotplug script: frontend (domid=21 | kind=vbd | devid=768); backend (domid=0 | kind=vbd3 | devid=768) Jan 21 09:12:23 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops_utils] TypedTable: Writing extra/1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] Device.Generic.hard_shutdown about to blow away backend and error paths Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] Device.rm_device_state frontend (domid=21 | kind=vbd | devid=5696); backend (domid=0 | kind=vbd3 | devid=5696) Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /xenops/domain/21/device/vbd/5696 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /local/domain/21/device/vbd/5696 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /local/domain/0/backend/vbd3/21/5696 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /local/domain/0/error/backend/vbd3/21 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /local/domain/21/error/device/vbd/5696 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] Device.Vbd.release frontend (domid=21 | kind=vbd | devid=5696); backend (domid=0 | kind=vbd3 | devid=5696) Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] xenstore-rm /local/domain/0/backend/vbd3/21/5696 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|hotplug] Hotplug.release: frontend (domid=21 | kind=vbd | devid=5696); backend (domid=0 | kind=vbd3 | devid=5696) Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|hotplug] Hotplug.wait_for_unplug: frontend (domid=21 | kind=vbd | devid=5696); backend (domid=0 | kind=vbd3 | devid=5696) Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|hotplug] Synchronised ok with hotplug script: frontend (domid=21 | kind=vbd | devid=5696); backend (domid=0 | kind=vbd3 | devid=5696) Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops_utils] TypedTable: Writing extra/1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops_server] VBD_DB.signal 1938f572-4951-a77f-48ce-9131c07940d4.xvdd Jan 21 09:12:23 mercurio xenopsd-xc: [debug||14 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|task_server] Task 83145 completed; duration = 0 Jan 21 09:12:23 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] Processing event: ["Vbd",["1938f572-4951-a77f-48ce-9131c07940d4","xvdd"]] Jan 21 09:12:23 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] xenops event on VBD 1938f572-4951-a77f-48ce-9131c07940d4.xvdd Jan 21 09:12:23 mercurio xenopsd-xc: [debug||167506 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops_server] VBD.stat 1938f572-4951-a77f-48ce-9131c07940d4.xvdd Jan 21 09:12:23 mercurio xenopsd-xc: [debug||167506 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] VM = 1938f572-4951-a77f-48ce-9131c07940d4; domid = 21; Device is not active: kind = vbd3; id = xvdd; active devices = [ None ] Jan 21 09:12:23 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] VM 1938f572-4951-a77f-48ce-9131c07940d4 VBD userdevices = [ 3; 0 ] Jan 21 09:12:23 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] VBD 1938f572-4951-a77f-48ce-9131c07940d4.xvdd matched device 3 Jan 21 09:12:23 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] xenopsd event: Updating VBD 1938f572-4951-a77f-48ce-9131c07940d4.xvdd device <- xvdd; currently_attached <- true Jan 21 09:12:48 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops_server] VBD_DB.signal 1938f572-4951-a77f-48ce-9131c07940d4.xvda Jan 21 09:12:48 mercurio xenopsd-xc: [debug||35 |Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4)|task_server] Task 83144 completed; duration = 25 Jan 21 09:12:48 mercurio xenopsd-xc: [debug||13 ||xenops_server] end_Parallel:task=83143.atoms=2.(VBD.unplug vm=1938f572-4951-a77f-48ce-9131c07940d4) Jan 21 09:12:48 mercurio xenopsd-xc: [debug||13 ||xenops_server] Performing: ["VIF_unplug",[["1938f572-4951-a77f-48ce-9131c07940d4","0"],true]] Jan 21 09:12:48 mercurio xenopsd-xc: [debug||13 ||xenops_server] VIF.unplug 1938f572-4951-a77f-48ce-9131c07940d4.0 Jan 21 09:12:48 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] Processing event: ["Vbd",["1938f572-4951-a77f-48ce-9131c07940d4","xvda"]] Jan 21 09:12:48 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] xenops event on VBD 1938f572-4951-a77f-48ce-9131c07940d4.xvda Jan 21 09:12:48 mercurio xenopsd-xc: [debug||167511 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops_server] VBD.stat 1938f572-4951-a77f-48ce-9131c07940d4.xvda Jan 21 09:12:48 mercurio xenopsd-xc: [debug||167511 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] VM = 1938f572-4951-a77f-48ce-9131c07940d4; domid = 21; Device is not active: kind = vbd3; id = xvda; active devices = [ ] Jan 21 09:12:48 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] VM 1938f572-4951-a77f-48ce-9131c07940d4 VBD userdevices = [ 3; 0 ] Jan 21 09:12:48 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] VBD 1938f572-4951-a77f-48ce-9131c07940d4.xvda matched device 0 Jan 21 09:12:48 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] xenopsd event: Updating VBD 1938f572-4951-a77f-48ce-9131c07940d4.xvda device <- xvda; currently_attached <- true Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops_server] VIF_DB.signal 1938f572-4951-a77f-48ce-9131c07940d4.0 Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops_server] Performing: ["VM_destroy","1938f572-4951-a77f-48ce-9131c07940d4"] Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops_server] VM.destroy 1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops] VM = 1938f572-4951-a77f-48ce-9131c07940d4; domid = 21; will not have domain-level information preserved Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops_utils] TypedTable: Removing extra/1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops_utils] TypedTable: Deleting extra/1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops_utils] DB.delete /var/run/nonpersistent/xenopsd/classic/extra/1938f572-4951-a77f-48ce-9131c07940d4 Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops] VM = 1938f572-4951-a77f-48ce-9131c07940d4; domid = 21; Domain.destroy: all known devices = [ ] Jan 21 09:12:49 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] Processing event: ["Vif",["1938f572-4951-a77f-48ce-9131c07940d4","0"]] Jan 21 09:12:49 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] xenops event on VIF 1938f572-4951-a77f-48ce-9131c07940d4.0 Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops] VM = 1938f572-4951-a77f-48ce-9131c07940d4; domid = 21; Domain.destroy: other domains with the same UUID = [ ] Jan 21 09:12:49 mercurio xenopsd-xc: [debug||167517 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops_server] VIF.stat 1938f572-4951-a77f-48ce-9131c07940d4.0 Jan 21 09:12:49 mercurio xenopsd-xc: [debug||167517 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] VM = 1938f572-4951-a77f-48ce-9131c07940d4; domid = 21; Device is not active: kind = vif; id = 0; active devices = [ ] Jan 21 09:12:49 mercurio xapi: [debug||844 |org.xen.xapi.xenops.classic events D:e4e3a2a5e9df|xenops] xenopsd event: Updating VIF 1938f572-4951-a77f-48ce-9131c07940d4.0 currently_attached <- true Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops] VM = 1938f572-4951-a77f-48ce-9131c07940d4; domid = 21; Domain.destroy calling Xenctrl.domain_destroy Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops] About to stop varstored for domain 21 (1938f572-4951-a77f-48ce-9131c07940d4) Jan 21 09:12:49 mercurio xenopsd-xc: [ warn||13 ||xenops_sandbox] Can't stop varstored for 21 (1938f572-4951-a77f-48ce-9131c07940d4): /var/run/xen/varstored-root-21 does not exist Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops] VM = 1938f572-4951-a77f-48ce-9131c07940d4; domid = 21; xenstore-rm /local/domain/21 Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops] VM = 1938f572-4951-a77f-48ce-9131c07940d4; domid = 21; deleting backends Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops_server] Performing: ["Parallel",["1938f572-4951-a77f-48ce-9131c07940d4","VBD.epoch_end vm=1938f572-4951-a77f-48ce-9131c07940d4",[["VBD_epoch_end",[["1938f572-4951-a77f-48ce-9131c07940d4","xvda"],["VDI","d62b0e6f-e8c4-c0da-3d73-df672a8a8dc3/65192a2d-f8f7-41c4-a6b5-9bfdc5110179"]]]]]] Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops_server] begin_Parallel:task=83143.atoms=1.(VBD.epoch_end vm=1938f572-4951-a77f-48ce-9131c07940d4) Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 ||xenops_server] queue_atomics_and_wait: Parallel:task=83143.atoms=1.(VBD.epoch_end vm=1938f572-4951-a77f-48ce-9131c07940d4): chunk of 1 atoms Jan 21 09:12:49 mercurio xenopsd-xc: [debug||13 |queue|xenops_server] Queue.push ["Atomic",["VBD_epoch_end",[["1938f572-4951-a77f-48ce-9131c07940d4","xvda"],["VDI","d62b0e6f-e8c4-c0da-3d73-df672a8a8dc3/65192a2d-f8f7-41c4-a6b5-9bfdc5110179"]]]] onto Parallel:task=83143.atoms=1.(VBD.epoch_end vm=1938f572-4951-a77f-48ce-9131c07940d4).chunk=0.atom=0:[ ] Jan 21 09:12:49 mercurio xenopsd-xc: [debug||22 ||xenops_server] Queue.pop returned ["Atomic",["VBD_epoch_end",[["1938f572-4951-a77f-48ce-9131c07940d4","xvda"],["VDI","d62b0e6f-e8c4-c0da-3d73-df672a8a8dc3/65192a2d-f8f7-41c4-a6b5-9bfdc5110179"]]]] Jan 21 09:12:49 mercurio xenopsd-xc: [debug||22 |Parallel:task=83143.atoms=1.(VBD.epoch_end vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops_server] Task 83147 reference Parallel:task=83143.atoms=1.(VBD.epoch_end vm=1938f572-4951-a77f-48ce-9131c07940d4): ["Atomic",["VBD_epoch_end",[["1938f572-4951-a77f-48ce-9131c07940d4","xvda"],["VDI","d62b0e6f-e8c4-c0da-3d73-df672a8a8dc3/65192a2d-f8f7-41c4-a6b5-9bfdc5110179"]]]] Jan 21 09:12:49 mercurio xenopsd-xc: [debug||22 |Parallel:task=83143.atoms=1.(VBD.epoch_end vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops_server] VBD.epoch_end ["VDI","d62b0e6f-e8c4-c0da-3d73-df672a8a8dc3/65192a2d-f8f7-41c4-a6b5-9bfdc5110179"] Jan 21 09:12:49 mercurio xenopsd-xc: [ info||22 |Parallel:task=83143.atoms=1.(VBD.epoch_end vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] Processing disk SR=d62b0e6f-e8c4-c0da-3d73-df672a8a8dc3 VDI=65192a2d-f8f7-41c4-a6b5-9bfdc5110179 Jan 21 09:12:49 mercurio xenopsd-xc: [error||22 |Parallel:task=83143.atoms=1.(VBD.epoch_end vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] Failed to read /vm/1938f572-4951-a77f-48ce-9131c07940d4/domains: has this domain already been cleaned up? Jan 21 09:12:49 mercurio xenopsd-xc: [debug||22 |Parallel:task=83143.atoms=1.(VBD.epoch_end vm=1938f572-4951-a77f-48ce-9131c07940d4)|xenops] Invalid domid, could not be converted to int, passing empty string. Jan 21 09:12:49 mercurio xapi: [ info||1293439 ||storage_impl] VDI.epoch_end dbg:Parallel:task=83143.atoms=1.(VBD.epoch_end vm=1938f572-4951-a77f-48ce-9131c07940d4) sr:d62b0e6f-e8c4-c0da-3d73-df672a8a8dc3 vdi:65192a2d-f8f7-41c4-a6b5-9bfdc5110179 vm: Jan 21 09:12:53 mercurio xenopsd-xc: [debug||22 |Parallel:task=83143.atoms=1.(VBD.epoch_end vm=1938f572-4951-a77f-48ce-9131c07940d4)|task_server] Task 83147 completed; duration = 4 Jan 21 09:12:53 mercurio xenopsd-xc: [debug||13 ||xenops_server] end_Parallel:task=83143.atoms=1.(VBD.epoch_end vm=1938f572-4951-a77f-48ce-9131c07940d4) Jan 21 09:12:53 mercurio xenopsd-xc: [debug||13 ||xenops_server] Performing: ["VM_hook_script",["1938f572-4951-a77f-48ce-9131c07940d4","VM_post_destroy","hard-reboot"]] Jan 21 09:12:53 mercurio xenopsd-xc: [error||13 ||xenops] Failed to read /vm/1938f572-4951-a77f-48ce-9131c07940d4/domains: has this domain already been cleaned up? Jan 21 09:12:53 mercurio xenopsd-xc: [debug||13 ||xenops_server] Performing: ["VM_hook_script",["1938f572-4951-a77f-48ce-9131c07940d4","VM_pre_reboot","none"]] Jan 21 09:12:53 mercurio xenopsd-xc: [error||13 ||xenops] Failed to read /vm/1938f572-4951-a77f-48ce-9131c07940d4/domains: has this domain already been cleaned up? Jan 21 09:12:53 mercurio xenopsd-xc: [debug||13 ||xenops_server] Performing: ["VM_hook_script",["1938f572-4951-a77f-48ce-9131c07940d4","VM_pre_start","none"]] Jan 21 09:12:53 mercurio xenopsd-xc: [error||13 ||xenops] Failed to read /vm/1938f572-4951-a77f-48ce-9131c07940d4/domains: has this domain already been cleaned up?

@ajpri1998 please look at: https://xcp-ng.org/forum/topic/5920/apc-smart-ups-with-nic-which-service-to-use-apcupsd-or-nut/8

@olivierlambert Looks possible, since I've clicked forget this particular slave/host in XOA, how would I go around adding it back there? The slave is missing from the masters pool list.

You're trying lie to the VM and tell it that it's running on a system with 24 physical sockets, each with a single core. For reference, 2 sockets is the biggest AMD server that you can buy (these days), and Intel top out at 8. If you want a larger system, you could buy a SuperDome which can manage up to 32 sockets (before hitting other limits of UPI switching). The various historical enumeration schemes can't encode that high, which is why there's a sanity check in XenCenter. You typically want 1 socket, so select 24 cores / socket. ~Andrew

@marclachapelle Hi, sorry for the delay. I had a theory but after tests that theory is wrong. Here are the files about the incident. [image: 1673537536734-crash-dr-2023-01-11-11_15_03-window.png] Log-Extract.txt

@chcnetconsulting Just to mention here that your problem(s) have been addressed in the most recent version of HA-Lizard (2.3.1). Simply upgrading and you are happy again