On Sun, Oct 06, 2002 at 08:26:03PM -0400, Robert Watson wrote:
> 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 :-).
I believe you were addressing the originator of this thread but I will
go ahead and show my trace/ps:
db> trace 1
mi_switch(c0f014e0,cd33dca8,1,80202,c0f018f0) at mi_switch+0x1b3
ithread_schedule(c25e6b00,1) at ithread_schedule+0x10d
sched_ithd(1) at sched_ithd+0x37
Xintr1() at Xintr1+0x67
--- interrupt, eip = 0xc025b5b0, esp = 0xcd33dcfc, ebp = 0xcd33dd04 ---
cpu_unpend(cd33dd14,c018478d,cd33d3c,c019a750,2800) at cpu_unpend+0x28
cpu_critical_exit(cd33dd3c,c019a750,2800,1,73e) at cpu_critical_exit+0x12
critical_exit(2800,1,73e,0,c0f05c40) at critical_exit+0x21
ast(cd33dd48) at ast+0x39c
doreti_ast() at doreti_ast+0x1a
db> ps
33 c25dd528 cddbf000 0 0 0 0000204 norm[SLPQ psleep c02dc580][SLP]
bufdaemon
9 c25dd6e0 cddc0000 0 0 0 000020c norm[RUNQ] pagezero
8 c25dd898 cddc1000 0 0 0 0000204 norm[SLPQ psleep c02df91c][SLP]
vmdaemon
7 c25dda50 cddc2000 0 0 0 0000204 norm[SLPQ psleep c02c9b18][SLP]
pagedaemon
6 c25ddc08 cddc3000 0 0 0 0000204 norm[SLPQ g_down c02b1a58][SLP] g_down
5 c25dddc0 cddc4000 0 0 0 0000204 norm[SLPQ g_up c02b1a54][SLP] g_up
4 c2615000 d1ddf000 0 0 0 0000204 norm[SLPQ g_events c02b1a4c][SLP]
g_event
32 c26151b8 d1de0000 0 0 0 0000204 new [IWAIT] irq8: rtc
31 c2615370 d1de1000 0 0 0 0000204 new [IWAIT] irq0: clk
30 c2615528 d1de2000 0 0 0 0000204 norm[IWAIT] irq6: fdc0
29 c26156e0 d1de3000 0 0 0 0000204 new [IWAIT] irq3: sio1
28 c2615898 d1de4000 0 0 0 0000204 new [IWAIT] irq4: sio0
27 c0f071b8 cd395000 0 0 0 0000204 new [IWAIT] swi0: tty:sio
26 c0f07370 cd396000 0 0 0 0000204 new [IWAIT] irq12: psm0
25 c0f07528 cd397000 0 0 0 0000204 norm[CPU 0] irq1: atkbd0
24 c0f076e0 cd398000 0 0 0 0000204 norm[RUNQ] irq5: pcm0
23 c0f07898 cd399000 0 0 0 0000204 norm[IWAIT] irq15: ata1
22 c0f07a50 cd39a000 0 0 0 0000204 norm[IWAIT] irq14: ata0
3 c0f07c08 cd39b000 0 0 0 0000204 norm[CVQ cbb cv c25e074c][SLP] cbb1
2 c0f07dc0 cd39c000 0 0 0 0000204 norm[CVQ cbb cv c25e014c][SLP] cbb0
21 c25dd000 cdd7e000 0 0 0 0000204 new [IWAIT] irq11: cbb0 cbb1+
20 c25dd1b8 cdd84000 0 0 0 0000204 norm[SLPQ nothing c042473c][SLP]
acpi_thermal
19 c25dd370 cdd85000 0 0 0 0000204 norm[IWAIT] irq9: acpi0
18 c0f00000 cd319000 0 0 0 0000204 new [IWAIT] irq13:
17 c0f001b8 cd38c000 0 0 0 0000204 new [IWAIT] swi5: task queue
16 c0f00370 cd38d000 0 0 0 0000204 norm[IWAIT] swi5: acpitaskq
15 c0f00528 cd38e000 0 0 0 0000204 norm[SLPQ sleep c03e1aa0][SLP] random
14 c0f006e0 cd38f000 0 0 0 0000204 new [IWAIT] swi1: net
13 c0f00898 cd390000 0 0 0 0000204 new [IWAIT] swi4: vm
12 c0f00a50 cd391000 0 0 0 000020c norm[IWAIT] swi6: tty:sio clock
11 c0f00c08 cd392000 0 0 0 000020c norm[Can run] idle
1 c0f00dc0 cd393000 0 0 0 0004200 norm[RUNQ] init
10 c0f07000 cd394000 0 0 0 0000204 norm[CVQ ktrace c02d7c44][SLP] ktrace
0 c02b2780 c0453000 0 0 0 0000200 norm[SLPQ sched c02b2780][SLP] swapper
--
Carl Schmidt
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