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[Claudiu Belu <cbelu@xxxxxxxxxxxxxxxxxxxxxx>]

** Also affects: nova
   Importance: Undecided
       Status: New

** Tags added: hyper-v liberty-backport-potential

** Changed in: os-win
   Importance: Undecided => High

** Changed in: os-win
     Assignee: (unassigned) => Lucian Petrut (petrutlucian94)

** Changed in: nova
   Importance: Undecided => High

** Changed in: nova
     Assignee: (unassigned) => Lucian Petrut (petrutlucian94)

** Changed in: nova
       Status: New => In Progress

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Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1557498

Title:
  Using logging in the serial console worker blocks Nova

Status in OpenStack Compute (nova):
  In Progress
Status in os-win:
  Fix Released

Bug description:
  The worker used by Nova to log instance serial console output can log
  an exception message.

  The issue is that logging a message from a different thread causes
  Nova to hang. It seems that the logging file handler causes issues
  when greenthreads and multiple native threads are used at the same,
  and the native threads log messages.

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