The guest is running NTP, hosted on server-b for more than 10 days. Its NTP reports:. ntp.drift=-35.387 ppm.
This matches the offset of server-b (32.99 seconds in 10 days, 19h21) very well: -35.33 ppm.
Doing a live migration of the guest from server-b to server-a:
Guest does not hang at all (NTP offset after migration: 0.38s).
So if NTP is not running on the hosts, then there are no issues with the guest, it seems.
Another test with NTP disabled on the servers (but enabled on the guest): 2.1.0-rc2- git-20140721
Still running qemu-git-
server-a:~$ ntpdate -q cl0
stratum 3, offset -29.405612, delay 0.02597
server-b$ ntpdate -q cl0
stratum 3, offset -32.990292, delay 0.02597
The guest is running NTP, hosted on server-b for more than 10 days. Its NTP reports:. ntp.drift=-35.387 ppm.
This matches the offset of server-b (32.99 seconds in 10 days, 19h21) very well: -35.33 ppm.
Doing a live migration of the guest from server-b to server-a:
Guest does not hang at all (NTP offset after migration: 0.38s).
So if NTP is not running on the hosts, then there are no issues with the guest, it seems.