On Thu, 2007-04-26 at 22:50 +0300, ext Daniel Stone wrote: > On Thu, Apr 26, 2007 at 06:56:40PM +0300, ext Eero Tamminen wrote: > > Hi, > > > > > I still think this watchdog thing is another legacy we have from Nokia > > > as a phone company. It makes perfect sense for dumb phone. It makes less > > > sense for computer. Yes when device locks up you need a way to reset > > > it. That is why you have reset button on computer and also reset hole on > > > every PDA. I know it is internet tablet not computer or PDA but also > > > Nokia should know that *this is not a phone* ;-) > > Anything with a radio (of which has the N800 has two) gets a watchdog. > Honestly, I don't think this is particularly insane. > > > > With reset hole one can reset device when (s)he wants. Watchdog may not > > > make things worse when device locks up solid (i.e. kernel bug or > > > feature) but rebooting device when some process dies of when things take > > > too long can make more damage than benefit. I know this is hard to > > > detect so my solution is to provide reset hole and do not try to guess. > > > User probably can notice this situation and act accordingly. > > > > This is improved a bit in latest release. Most things are restartable > > and device is rebooted only if restarting them fails too many times in > > a row (Desktop, window manager etc). > > > > However, without X server or D-BUS you cannot use the device at all > > and all your UI processes exit automatically, so it doesn't make sense > > to try to "keep the device up" if those exit/crash. > > The sensible solution is to pull the desktop down and restart it along > with the X server, instead of panicking and rebooting the device. > Unfortunately, our init system (osso-af-init) is so horribly designed > that it's almost impossible to do[0] without just blowing away our init > system and starting again _from scratch_. Which is arguably what we > should do, anyway.
The desktop (Home) is nowadays restartable, so we would still need to restart other X clients. It should be possible to move X clients' startup scripts from /etc/osso-af-init to some other directory where they could be run again to restart the stuff in case the X server crashed. (At least clipboard, sapwood, matchbox, osso-connectivity-ui, and hildon-input-methods.) I don't see any big remaining problem here... BR, Kimmo > > Cheers, > Daniel > > [0]: I had an ndm for exactly this internally, but due to the init > scripts being so incredibly broken both by horrible design and > awful implementation, the init scripts always returned failure, > even if they succeeded. Go figure. > _______________________________________________ > maemo-developers mailing list > maemo-developers@maemo.org > https://maemo.org/mailman/listinfo/maemo-developers _______________________________________________ maemo-developers mailing list maemo-developers@maemo.org https://maemo.org/mailman/listinfo/maemo-developers
