[issue43743] BlockingIOError: [Errno 11] Resource temporarily unavailable: on GPFS.

[Pablo Conesa]

Pablo Conesa <p.conesa.mingo at gmail.com> added the comment:

So, is it ok, when the fast copy fails, not to _GiveupOnFastCopy(err)?

I can understand that fast copy might fail, but then the Giveup part should happen and it wasn't.

Additionally, _USE_CP_SENDFILE could be taken, optionally from an environment variable to cancel the fastcopy once we know it will fail?

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<https://bugs.python.org/issue43743>
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