Hi everyone, I'd like to allow VDSM to change the verbosity of its loggers at runtime, without restarting the daemon. Doing so, we could make the default silent, and we'll also offer a convenient way for users to enable/disable debug log. When something has to be debugged or better understood, one can temporarily increase verbosiness, and then restore the normal level, with minimal service disruption (= no vdsmd restart). Currently vdsm uses the standard 'logging' module, which, to best of my knowledge, allows to tune levels at runtime since forever. So, the main concern is the interface. I see these options, from the one I like the most to the one I like the least: 1. add a inotify helper/trigger, just reload the config file when changed. Seems safe and convenient, but will lead to a "complex" patch. 2. just add a new verb to be used by Engine/vdsClient/whatever. Tuning log levels is not more dangerous than a truckload of verbs we already expose 3. build on the manhole integration (https://gerrit.ovirt.org/#/c/32147/). 4. use signals (SIGUSR? SIGHUP?) Thoughts welcome -- Francesco Romani RedHat Engineering Virtualization R & D Phone: 8261328 IRC: fromani