I've checked again and the toolkit doesn't link to liblttng-ust, it just
dlopens it when UC_METRICS_LOGGING=lttng is set. We don't see
libumlttng.so in the maps so that means UC_METRICS_LOGGING is not set in
the dekko case.
That said, I've seen that libubuntu-app-launch (at least) links to
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lttng shouldn't be enabled out of the box/ incompatible with snappy
Status in ubuntu-ui-toolkit package in Ubuntu:
As I understand it, lttng shouldn't be used out of the box - I'm seeing
apparmor complaining about it, though. The other aspect of it is the fact that
it's using a folder apparmor won't allow under snap confinement.
I realize this is a hybrid bug, but I don't know exactly what to expect for
either of these, I'm really filing it based on the symptoms for now.
$ snap install dekko --edge --devmode
$ snappy-debug.security scanlog &
Log: apparmor="ALLOWED" operation="open" profile="snap.dekko.dekko"
name="/dev/shm/lttng-ust-wait-6-1000" pid=3230 comm="QQmlThread"
requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
Dekko doesn't link to lttng:
$ ldd /snap/dekko/current/usr/bin/dekko | grep lttng
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