Public bug reported:
Hello,
On Ubuntu Server 17.04 daily from Febr 14th we see that the KVP daemon
although it is enabled in systemd, it fails to start at system boot.
This is shown by error: "KVP: read failed; error:9 Bad file descriptor"
I then manually ran the kvp binary, it returned the KVP data, and it's also
automatically loading at boot. However, this is of course not the normal
behavior.
17.04 daily from Febr 14th is the first build we covered, so I cannot say if
this is a regression introduced only at some point in 17.04 dailies.
In syslog these are the only messages for KVP:
Feb 14 08:01:22 ubuntu systemd[1]: Started Hyper-V KVP Protocol Daemon.
Feb 14 08:01:22 ubuntu KVP: KVP starting; pid is:1837
Feb 14 08:01:22 ubuntu KVP: KVP LIC Version: 3.1
Feb 14 08:02:31 ubuntu KVP: read failed; error:9 Bad file descriptor
systemd status:
root@ubuntu:~# systemctl status hv-kvp-daemon.service
● hv-kvp-daemon.service - Hyper-V KVP Protocol Daemon
Loaded: loaded (/lib/systemd/system/hv-kvp-daemon.service; enabled; vendor
preset: enabled)
Active: failed (Result: exit-code) since Tue 2017-02-14 08:02:31 PST; 1min
41s ago
Main PID: 1837 (code=exited, status=1/FAILURE)
CPU: 4ms
Feb 14 08:01:22 ubuntu systemd[1]: Started Hyper-V KVP Protocol Daemon.
Feb 14 08:01:22 ubuntu KVP[1837]: KVP starting; pid is:1837
Feb 14 08:01:22 ubuntu KVP[1837]: KVP LIC Version: 3.1
Feb 14 08:02:31 ubuntu systemd[1]: hv-kvp-daemon.service: Main process exited,
code=exited, status=1/FAILURE
Feb 14 08:02:31 ubuntu systemd[1]: hv-kvp-daemon.service: Unit entered failed
state.
Feb 14 08:02:31 ubuntu systemd[1]: hv-kvp-daemon.service: Failed with result
'exit-code'.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: hyper-v
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https://bugs.launchpad.net/bugs/1664663
Title:
[Hyper-V] kvp daemon start failure on Zesty
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