[ Andy Whitcroft ] * debian/udev.initramfs-bottom: ignore timeout errors from udevadm we expect (and indeed requested) in certain failure modes. If we do not we will bail out early and not transfer /dev into /root which is always fatal leading to unbootable machines. (LP: #818177) * avoid-exit-deadlock-for-timely-events: avoid deadlock when exiting by continuing to handle events with timeliness requirements. The timeliness requirement will be violated if we ignore them which is highly undesirable. Also these events are typically dependant events and may well block the events we are waiting on leading to boot delays and uninitialised devices. (LP: #842560) * debian/udev.initramfs-bottom: increase the client-side timeout to better cope with potential timeout extension issues in udev. We very much would prefer udev to time itself out and guarantee to have completed than take action ourselves. Very worst case the timeout may be doubled from the default of 60s so increase ours accordingly. Note, we should only ever trip this timeout when we are already in severe trouble. (LP: #818177)