Em 21-12-2013 21:52, Adam Jensen escreveu: > On 12/20/2013 09:05 AM, Giancarlo Razzolini wrote: >> Em 19-12-2013 17:56, Adam Jensen escreveu: >>> I've been using a KVM switch (USB keyboard and mouse) on a couple of >>> machines recently and I noticed that when the Keyboard, Video, and >>> Mouse connections are switched away from the OpenBSD machine, a USB >>> disconnect is reported (as expected). When switched back, the keyboard >>> and mouse are not reconnected (video is displayed, of course). Once >>> the machine is in this state, I can continue to work with it through >>> ssh but if the machine is "shutdown -hp" or "halt -p" it hangs during >>> the "Syncing disks..." stage and stays there indefinitely (or until >>> the power cable is pulled). The file-systems are not cleanly >>> unmounted. This behavior occurs with an i386 machine and with an amd64 >>> machine. >>> >>> It seems like it might be a serious issue if the USB software stack is >>> preventing a disk sync. >>> >> Do you have all patches on http://www.openbsd.org/errata54.html applied? >> Specifically, I had random issues until I've applied this one: >> http://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/003_vnode.patch >> >> Also, try enabling the ddb.panic sysctl flag, it might help debugging >> the issue. A dmesg would help too. >> > > I rebuilt the machines recently and I have not been able to reproduce > the system hang during shutdown. The USB devices still don't reconnect > after being disconnected but both machines have been powering down > without any problems. So on the one hand, huzzah! It works. On the > other hand, wtf? > KVM systems are at best a hack. I do not personally uses them, since they have the tendency to not follow standards and ultimately breaking things. Your dmesg doesn't show anything when you switch back to openbsd?
-- Giancarlo Razzolini GPG: 4096R/77B981BC
