Hello,
I know this one sounds very specific but bear with me :)
Initially tracked here (DMC-1285).
When calling gfal-copy
(with ProgressBar) against a TLS XRootd Storage, the XRootD client will enter a loop, caused by the XrdClForkHandler
. The ProgressBar, which spawns a Python thread of its own, is a necessary step to trigger this.
It might be the additional thread puts the XrdClForkHandler
in a bad state, causing the loop.
How to reproduce:
$ XRD_RUNFORKHANDLER=1 gfal-copy /tmp/file root://osggridftp01.slac.stanford.edu:2094/<path>
From XRootd v5.2.0, the XrdClForkHandler
is enabled by default
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