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Assure multiprocess start method is fork #383

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Sep 17, 2025
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Assure multiprocess start method is fork #383

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4 changes: 4 additions & 0 deletions qubesadmin/backup/restore.py
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,10 @@
from qubesadmin.utils import size_to_human


# Python 3.14 in Fedora 43 changes the default start method away from fork
if multiprocessing.get_start_method(allow_none=True) != "fork":
multiprocessing.set_start_method("fork")

# must be picklable
QUEUE_FINISHED = "!!!FINISHED"
QUEUE_ERROR = "!!!ERROR"
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