Tony Cappellini added the comment:
Using Python 3.7.4, I'm calling subprocess.run() with the following arguments.
.run() still hangs even though a timeout is being passed in.
subprocess.run(cmd_list,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
shell=False, timeout=timeout_val,
check=True,
universal_newlines=True)
cmd_list contains the name of the bash script below, which is
./rescan.sh
--
#!/usr/bin/bash
echo Rescanning system for PCIe devices
echo "Rescan device"
echo 1 > /sys/bus/pci/rescan
sleep 5
if [ `lspci | grep -ic "Non-Volatile memory controller"` -gt 0 ]
then
echo "Device Detected after Rescan"
else
echo "Device NOT detected after Rescan"
exit 1
fi
echo Rescan Done
This script is scanning for NVME SSDs, so duplicating the issue is not as
straightforward as submitting a python script.
The OS is CentOS 7.
uname -a shows
3.10.0-693.el7.x86_64 #1 SMP Tue Aug 22 21:09:27 UTC 2017 x86_64 x86_64 x86_64
GNU/Linux
I know the Kernel is old, but we have a restriction against updating it.
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<https://bugs.python.org/issue37424>
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