I'm in trouble to get some usb(4) devices working here. Devices are attached as ugen(4) and are driven by userspace (libusb) drivers/daemons. As far as I can see what happens is that daemon opens ugen(4) device correctly and starts to poll(2) interrupt endpoint of the device (devices have single interface). The trouble is that poll(2) seems to ignore timeout. It doesn't return until there is data available in the descriptor. Ie I can make poll(2) to return with poking device, but till then it...

HAMMER is going to be a little unstable as I commit the crash recovery code. I'm about half way through it. Meta-data updates to the disk media have now been separated out. I have a few things left to do before crash recovery will actually work: * I have to flush the undo buffers out before the meta-data buffers * Then I have to flush the volume header so mount can see the updated undo info. * Then I have to flush out the meta-data buffers that the UNDO i...