[lttng-dev] [EXTERNAL] Re: LTTng: block device enumeration is not supported by kernel

John O'Sullivan John.OSullivan at BlackBox.com
Wed Sep 5 05:02:57 EDT 2018


Hi Micheal,

I am using 4.9.0-xilinx-v2017.2 (https://github.com/Xilinx/linux-xlnx/releases/tag/xilinx-v2017.2) , built using buildroot-2017.02.4 running on a Xilinx MPSoc.
LTTNG_TOOLS_VERSION = 2.9.3
Using the control view I created a session, right clicked on UST Global, selected Add Context, however this morning I keep getting a failure to add a context so I am not sure exactly what set of contexts caused the error yesterday.
I am going to abandon the control view in Compass for now and go back to scripting stuff to see if I can recreate the error.

regards
John
________________________________________
From: Michael Jeanson <mjeanson at efficios.com>
Sent: 04 September 2018 22:55
To: John O'Sullivan
Cc: lttng-dev at lists.lttng.org
Subject: [EXTERNAL] Re: [lttng-dev] LTTng: block device enumeration is not supported by kernel

Hi John,

Which distribution and kernel version are you running? If it's a patched kernel, are the
patches / source tree publicly available? Which version of lttng? Distro packages or
custom built?

I would also need all the commands required to reproduced the problem.

Regards,

Michael

----- On Sep 4, 2018, at 12:10 PM, John O'Sullivan John.OSullivan at BlackBox.com wrote:

> Hi,
>
> When I try to add context to a session on my arm based target I get the
> following:
>
> LTTng: block device enumeration is not supported by kernel
>
> After which the board locks up.
>
> Any insight as to the issue?
>
>
> John O’Sullivan


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