Hi,
V st, 14. 01. 2009 v 14:49, Quaker Fang p??e:
> Kacheong Poon wrote:
> > Quaker Fang wrote:
> >
> >>> My main concern was and is on the freeze. Also this time, as the
> >>> beep started, I could still write and post the message. But no more
> >>> 'ps'. I could close the terminals, but could not open any other; but
> >>> still navigate with the mouse to other applications, and even open a
> >>> gedit ('Text Editor'). Around 10 minutes later name resolution
> >>> stopped, though I could still mouse-click to other windows. Finally
> >>> a few more minutes into the scenario, mouse clicks also would not
> >>> work, the keyboard would be dead. Another hard reset was on the order.
> >>>
> >>> There *is* a serious problem with a driver that reproducibly brings
> >>> down a system. plug-unplug/plumb-unplumb or not.
> >> Wrong, these "freezing" has nothing related with driver, you can try
> >> without rum driver, only "rge0", you will encounter same problem.
> >> This phenomenon is a well known issue, you can go to
> >> "networking-discuss at opensolaris.org" for more information, there are
> >> more experts.
> >
> >
> > Could you elaborate the "well known" issue? For example,
> > unplumbing an interface should not freeze the system.
> > In fact, if unplumb does not return for a reasonable
> > time frame, it is a bug somewhere.
> I mean a lot of people experience while network is not reachable
> occasionally (such as un-plug),
> some commands can't execute like freezing, for example "ifconfig rum1 drop".
> I don't say unplumb an interface.
>
Which makes sense because there is DNS resolving going through UDP
packet, which is lost, because it is routed to NIC with no link. Which
is expeted behaviour I think. Then naming will timeout after while.
If you unplug cable from NIC, then you need to ifconfig down the
interface manually. Or daemon (like nwamd) can take care about it.
But what is the reason for beep?
For Uwe case I think the most issues are based on routing problems with
switching between 2 interfaces on the same subnet. But I do not
understand all Uwe's issues and root causes of them.
Best regards,
Milan
