qubes large volume inter-vm file copy fails

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rohan kumbhar

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Dec 1, 2016, 1:35:38 PM12/1/16
to qubes-users
Hi,

Context for said subject:
task : automation
src vm : work
target vm : win7-64
operation : file-copy
File-Copy src : /home/user/files
File-Copy target : /user/Documents/QubesIncoming/win7-64

the 2 vm's mentioned above are connected to different firewalls.
hence, there are 2 isolated networks.

work vm fetches *.* into the files folder using a python-script-1. the same script further issues qvm-copy-to-vm command on every file fetched to win7-64 vm.

inside win7-64 vm another python-script-2 resides. it processes the received files.

Issue:
While python-script-1 dumps files, if python-script-2 accesses the File-Copy target, then python-script-1 in work vm starts displaying "connect: connection refused."

How to interpret whats wrong?
Is it that the qrexec-agent lost the handle to directory?
There was a race-condition?
Virtual channel closed? if yes, why?

Marek Marczykowski-Górecki

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Dec 1, 2016, 5:38:19 PM12/1/16
to rohan kumbhar, qubes-users
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Check logs of qrexec-agent running in work VM, for example using:

sudo journalctl -b -u qubes-qrexec-agent.service

"connect: connection refused." suggests problem on connecting to it -
maybe it's dead?

- --
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
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rohan kumbhar

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Dec 1, 2016, 11:58:09 PM12/1/16
to qubes-users

checked sudo journalctl -b -u qubes-qrexec-agent.service
nothing found there.

how to debug this connect: Connection refused

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