Hi, I was trying to upgrade the hosted-engine environment from v3.6.5 to
Upgrading host01 and host02 is OK. But when I was trying to put host03
(which has the engine VM in it) to maintenance mode, the process stuck -
only the engine VM was migrated, another ordinary VM didn't.
I also noted that a lot of "Moving Host xxx to Maintenance" task was
gradually created but didn't finished.
Here are the log files:
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