On Sun, 6 Oct 2002, Carl Schmidt wrote:

> > Mounting root from ufs:/dev/ad0s1a
> > 
> > and hangs -- only a physical reset works.  However, breaking into the
> > debugger, and running a trace, I get (hand-copied):

Hmm.  I actually ran into this problem on some diskless booting boxes, but
it went away so I assumed it was a local nit since I was messing with VFS
substantially on the boxes in question.  Apparently not.  (This was a
month or two ago, and quite pre-GEOM as default). 

Here's my first suggestion: the root file system is mounted by the init
process--your trace shows the stack of the current interrupt thread for
keyboard I/O, since that's the foreground thread when you break to the
debugger.  Try using 'trace 1' to trace init instead; also, if you could
provide the output from the ddb ps command, that would be very useful. 
BTW, you really want to be using a serial console for this sort of thing
-- copying stuff out by hand is (a) a pain, and (b) very error prone :-).

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
[EMAIL PROTECTED]      Network Associates Laboratories



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