Public bug reported:
$ dpkg -l | grep ltt
ii liblttng-ctl0:amd64 2.11.1-1
amd64 LTTng control and utility library
ii liblttng-ust-ctl4:amd64 2.11.0-1
amd64 LTTng 2.0 Userspace Tracer (trace control library)
ii lttng-modules-dkms 2.10.8-1ubuntu2
all Linux Trace Toolkit (LTTng) kernel modules (DKMS)
ii lttng-tools 2.11.1-1
amd64 LTTng control and utility programs
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu Focal Fossa (development branch)
Release: 20.04
Codename: focal
How to reproduce:
$ sudo lttng create foobar
Session foobar created.
Traces will be output to /root/lttng-traces/foobar-20200212-123955
$ sudo lttng enable-event --kernel sched_switch
Kernel event sched_switch created in channel channel0
$ sudo lttng start
Tracing started for session foobar
$ dd if=/dev/zero bs=4096 count=100000 | cat | cat | cat | dd bs=4096 >
/dev/null
100000+0 records in
100000+0 records out
409600000 bytes (410 MB, 391 MiB) copied, 0.664467 s, 616 MB/s
100000+0 records in
100000+0 records out
409600000 bytes (410 MB, 391 MiB) copied, 0.664758 s, 616 MB/s
$ sudo lttng stop
Waiting for data availability.
Tracing stopped for session foobar
$ sudo lttng destroy
Error: Rotation feature not supported by the kernel tracer. during the
destruction of session "foobar"
** Affects: ltt-control (Ubuntu)
Importance: Undecided
Status: New
** Affects: ltt-control (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: ltt-control (Ubuntu Focal)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1862936
Title:
Error: Rotation feature not supported by the kernel tracer.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ltt-control/+bug/1862936/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
