This also happens in Bionic minimal images and seems to be a simple race where the daemon is launched when the device is not yet visible.
It seems Fedora had the same or a similar issue: https://bugzilla.redhat.com/show_bug.cgi?id=1195029 >From the conversation in that bug report, my understanding is that this daemon supports features that can be enabled/disabled while the system is live and that the daemon should therefore be launched/stopped dynamically when the /dev/vmbus/hv_kvp device node comes or goes. Since this race condition happening or not happening may depend on host, hypervisor and boot speed, it could pop up also on existing releases and thus should probably be treated with a certain amount of urgency. ** Bug watch added: Red Hat Bugzilla #1195029 https://bugzilla.redhat.com/show_bug.cgi?id=1195029 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1820063 Title: [Hyper-V] KVP daemon fails to start on first boot of disco VM Status in linux package in Ubuntu: Confirmed Bug description: Launching a recent daily image of disco on azure results in a VM in which the hv-kvp-daemon.service fails to start: $ systemctl status -o cat hv-kvp-daemon.service ● hv-kvp-daemon.service - Hyper-V KVP Protocol Daemon Loaded: loaded (/lib/systemd/system/hv-kvp-daemon.service; enabled; vendor pr Active: failed (Result: exit-code) since Thu 2019-03-14 13:07:15 UTC; 11min a Main PID: 219 (code=exited, status=1/FAILURE) Started Hyper-V KVP Protocol Daemon. KVP starting; pid is:219 open /dev/vmbus/hv_kvp failed; error: 2 No such file or directory hv-kvp-daemon.service: Main process exited, code=exited, status=1/FAILURE hv-kvp-daemon.service: Failed with result 'exit-code'. The instance was created with: $ az vm create --resource-group [redacted] --image Canonical:UbuntuServer:19.04-DAILY:19.04.201903130 --size Standard_D2_v2 --name disco-0313 As best as I can tell, the /dev/vmbus/hv_kvp isn't available when the hv-kvp-daemon.service starts, but it is available a few seconds later. Manually starting the daemon once I can ssh in works. --- ProblemType: Bug AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access '/dev/snd/': No such file or directory AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.10-0ubuntu23 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord' CRDA: N/A DistroRelease: Ubuntu 19.04 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' Lsusb: Error: command ['lsusb'] failed with exit code 1: MachineType: Microsoft Corporation Virtual Machine Package: linux (not installed) PciMultimedia: ProcEnviron: TERM=screen-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=C.UTF-8 SHELL=/bin/bash ProcFB: 0 hyperv_fb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-1011-azure root=PARTUUID=11894199-2ca2-4912-9c41-d28128744d57 ro console=tty1 console=ttyS0 panic=-1 ProcVersionSignature: User Name 4.18.0-1011.11-azure 4.18.20 RelatedPackageVersions: linux-restricted-modules-4.18.0-1011-azure N/A linux-backports-modules-4.18.0-1011-azure N/A linux-firmware N/A RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' Tags: disco uec-images Uname: Linux 4.18.0-1011-azure x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm audio cdrom dialout dip floppy netdev plugdev sudo video _MarkForUpload: True dmi.bios.date: 06/02/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 090007 dmi.board.name: Virtual Machine dmi.board.vendor: Microsoft Corporation dmi.board.version: 7.0 dmi.chassis.asset.tag: 7783-7084-3265-9085-8269-3286-77 dmi.chassis.type: 3 dmi.chassis.vendor: Microsoft Corporation dmi.chassis.version: 7.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr090007:bd06/02/2017:svnMicrosoftCorporation:pnVirtualMachine:pvr7.0:rvnMicrosoftCorporation:rnVirtualMachine:rvr7.0:cvnMicrosoftCorporation:ct3:cvr7.0: dmi.product.name: Virtual Machine dmi.product.uuid: 3b0f2160-7fc4-a646-904c-4248f04792d4 dmi.product.version: 7.0 dmi.sys.vendor: Microsoft Corporation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1820063/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
