yarprun --log broken

[giuliavezzani]

yarpmanager cannot launch modules on different machines (for instance: if you are working on the icub21, it cannot launch modules on icub22 and icub-cuda) if the Log is enabled on those machines.
I managed to launch the modules on icub22 and icub-cuda, disabling the their Log from the icub-cluster.py.

[randaz81]

Some recent changes to yarprun have broken the --log option.

@giuliavezzani :

• on icub22 yarprun does not work because on that machine the new version of yarprun is running.
• on icub21 yarprun works because an old version of yarprun is running (ps aux shows that it has been not restarted since Apr 06th)

@drdanz
Maybe https://github.com/robotology/yarp/commit/3c1882dfb8a217b4e3a83962b49aeba417c9aee1 ?

[randaz81]

The error message displayed by yarprun:

ABORTED: server=/icub22 alias=test cmd=stdout
Can't execute stdout because Operation not supported

In the previous version, yarprun was displaying the name of the executable to run instead of stdout

[Tobias-Fischer]

Hi,
Do you already have an update on this? We were just running into this issue. Anything I can help with to resolve this?

Best, Tobias

[claudiofantacci]

Hi @Tobias-Fischer, afaik there is not a fix yet, but is on the go 😄
Thanks for the patience!

[drdanz]

After some debugging, I think there was some change on debian/ubuntu that break it

my test was:

yarp server

```bash
yarprun --server /foo --log

```bash
yarprun --on /foo --as bar --cmd /bin/true

Result:

• Works on windows 10
• Broken on 2 different debian testing (one recently updated and one updated a few weeks ago)
• Broken on ubuntu xenial
• Works on ubuntu trusty

I bisected it and apparently the first broken commit was the one where the --log option was added

Can anyone test it on more (or even the same) operating systems?

[francesco-romano]

macOS 10.12.4

makas-pro:build makaveli$ yarprun --server /foo --log
STARTED: server=/foo alias=bar cmd=stdout pid=65483
ABORTED: server=/foo alias=bar cmd=stdout
Can't execute stdout because Operation not supported
ABORTED: server=/foo alias=bar cmd=stdout
Can't execute stdout because Operation not supported
ABORTED: server=/foo alias=bar cmd=/bin/true
Can't execute command because No such file or directory

makas-pro:build makaveli$ yarprun --on /foo --as bar --cmd /bin/true
yarp: Port /tmp/port/1 active at tcp://10.255.36.7:10003/
yarp: Sending output from /tmp/port/1 to /foo using tcp
yarp: Removing output from /tmp/port/1 to /foo
RESPONSE:
=========
-1
ABORTED: server=/foo alias=bar cmd=stdout
Can't execute stdout because Operation not supported
ABORTED: server=/foo alias=bar cmd=/bin/true
Can't execute command because No such file or directory

(/bin/true does not exist on macOS, but even with an existing command the result is the same)

[pattacini]

Great debugging @drdanz 👍
However, I can certainly tell that the --log option was running ok on xenial in the past, just because we have introduced xenial in our system since quite long by now.

[francesco-romano]

If I may add, on macOS using master branch everything works perfectly.

makas-pro:build makaveli$ yarprun --server /foo --log
STARTED: server=/foo alias=bar cmd=stdout pid=67235
STARTED: server=/foo alias=bar cmd=/bin/ls pid=67236

yarprun --on /foo --as bar --cmd /bin/ls
yarp: Port /tmp/port/1 active at tcp://10.255.36.7:10003/
yarp: Sending output from /tmp/port/1 to /foo using tcp
yarp: Removing output from /tmp/port/1 to /foo
RESPONSE:
=========
67236
STARTED: server=/foo alias=bar cmd=/bin/ls pid=67236

[claudiofantacci]

It is broken also on Linux 4.6.0-1-amd64 #1 SMP Debian 4.6.4-1 (2016-07-18) x86_64 GNU/Linux running on my laptop.

[drdanz]

Ok, found the problem, I couldn't find it on my systems since for some reason I was building with SKIP_ACE on both of them, and I had issues with the PATH variable...
Anyway, it should be fixed now...

[drdanz]

Please everyone test and report...

[francesco-romano]

@drdanz tested on macOS and the issue is solved.

[traversaro]

@gabrielenava is testing it now on iCubGenova04 , I will update this issue.

[amaroyo]

@drdanz Updated and tested on iCubGenova03. Everything running smoothly :) Thanks!