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While running an Ubuntu kernel (not a mainline or third-party kernel)
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apport-collect 1891224
and then change the status of the bug to 'Confirmed'.
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This change has been made by an automated script, maintained by the
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** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1891224
Title:
[Hyper-V] VSS and File Copy daemons intermittently fails to start
Status in linux package in Ubuntu:
Incomplete
Bug description:
We have most reliably reproduced this on a Standard_B1s in Azure in
the North Europe region (>80% of the time). Tests in other regions/VM
types do not show this failure as often (<1%). We have reproduced this
in Xenial, Bionic, Focal, and Groovy. We saw an increase of test
failures around a month ago.
From the journal :
Aug 11 09:55:28 ubuntu systemd[1]:
sys-devices-virtual-misc-vmbus\x21hv_vss.device: Job
sys-devices-virtual-misc-vmbus\x21hv_vss.device/start tim>
Aug 11 09:55:28 ubuntu systemd[1]: Timed out waiting for device
sys-devices-virtual-misc-vmbus\x21hv_vss.device.
Aug 11 09:55:28 ubuntu systemd[1]: Dependency failed for Hyper-V VSS Protocol
Daemon.
Aug 11 09:55:28 ubuntu systemd[1]: hv-vss-daemon.service: Job
hv-vss-daemon.service/start failed with result 'dependency'.
Aug 11 09:55:28 ubuntu systemd[1]:
sys-devices-virtual-misc-vmbus\x21hv_vss.device: Job
sys-devices-virtual-misc-vmbus\x21hv_vss.device/start fai>
Aug 11 09:55:28 ubuntu systemd[1]:
sys-devices-virtual-misc-vmbus\x21hv_fcopy.device: Job
sys-devices-virtual-misc-vmbus\x21hv_fcopy.device/start>
Aug 11 09:55:28 ubuntu systemd[1]: Timed out waiting for device
sys-devices-virtual-misc-vmbus\x21hv_fcopy.device.
Aug 11 09:55:28 ubuntu systemd[1]: Dependency failed for Hyper-V File Copy
Protocol Daemon.
We've seen problems in the past with KVP daemons that looked very similar :
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1820063
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