Date: Sun, 13 Jul 2003 18:50:20 -0700 (PDT) From: "KAREN THODE" <thode12@msn.com> To: freebsd-i386@FreeBSD.org Subject: Re: i386/53620: Kernel panics / reboots during install of 5.1 to 40GB disk on 44 Message-ID: <200307140150.h6E1oKWq036480@freefall.freebsd.org>
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The following reply was made to PR i386/53620; it has been noted by GNATS.
From: "KAREN THODE" <thode12@msn.com>
To: "Nick Triantos" <nick@triantos.com>,
<freebsd-gnats-submit@freebsd.org>
Cc:
Subject: Re: i386/53620: Kernel panics / reboots during install of 5.1 to 40GB disk on 44
Date: Sun, 13 Jul 2003 20:43:06 -0500
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See if you can rebuild the system, but change the rw to ro for the entry =
in /etc/fstab for the root filesystem on ad0. Also, try not installing p=
ackages.
----- Original Message -----
From: Nick Triantos
Sent: Sunday, July 13, 2003 1:47 PM
To: 'KAREN THODE'; freebsd-gnats-submit@freebsd.org
Subject: RE: i386/53620: Kernel panics / reboots during install of 5.1 to=
40GB disk on 44
Yes, thanks for checking. The problem, I think, is that sysinstall tries=
to install to ad0, though I'm not sure.
This time I did not get a panic, instead, I just got the install overwrit=
ing my live system.
regards,
-Nick
-----Original Message-----
From: KAREN THODE [mailto:thode12@msn.com] =20
Sent: Sunday, July 13, 2003 11:13 AM
To: Nick Triantos; freebsd-gnats-submit@freebsd.org
Subject: Re: i386/53620: Kernel panics / reboots during install of 5.1 to=
40GB disk on 44
Did you add the dumpdev line to /etc/rc.conf?
----- Original Message -----
From: Nick Triantos
Sent: Saturday, July 12, 2003 11:58 PM
To: 'KAREN THODE'; freebsd-gnats-submit@freebsd.org
Subject: RE: i386/53620: Kernel panics / reboots during install of 5.1 to=
40GB disk on 44
(re-sending, my mail server is having problems, not sure if it made it th=
rough)
Hi, this did not work as expected.
I built/installed a debug kernel, but when I ran /stand/sysinstall after =
booting with that kernel (from the 20GB disk), it seemed to only know how=
to install to /dev/ad0, which is the 20GB disk. It overwrote part of my=
working installation before I could cancel it. fdisk/disklabel worked o=
k to /dev/ad1, but the install of packages seemed to want to force itself=
onto the live filesystem.
(1) Is there something I could / should do to build a custom install CD w=
ith the debug kernel?
(1a) I could install yet another hard disk in the machine that the CD cou=
ld use as swap space
(2) Or maybe I can somehow mount all of my working disk as a read-only mo=
unt?
(3) It seems I should be able to get sysinstall to forcibly write to /dev=
/ad1 only, but from reading over all the docs I can find, I could not see=
a way to do that.
(4) I could also use null-model to debug this, if it's reasonably easy to=
set up. The only compilication is that my other PCs all run WinXP, so I=
'd have to install a gdb client for windows, and probably cygwin.
regards, and thanks for all the help.
-Nick
-----Original Message-----
From: KAREN THODE [mailto:thode12@msn.com] =20
Sent: Tuesday, July 08, 2003 4:02 PM
To: Nick Triantos; freebsd-gnats-submit@freebsd.org
Subject: Re: i386/53620: Kernel panics / reboots during install of 5.1 to=
40GB disk on 44
Boot off of the 20 GB hard drive. Now, you need to make a copy of /usr/s=
rc/sys/i386/conf/GENERIC into a new directory called /usr/dbgkern. Now o=
pen up /usr/dbgkern/GENERIC in a text editor. Look for a line that says =
"#makeoptions DEBUG=3D-g" and remove the pound sign from the beginning.=
Now change "ident GENERIC" to "ident DBGKERN". Save this file as DBG=
KERN. Exit the editor. Now, type these commands (without the outer set =
of quotes) into the console while logged in as root.
"cd /usr/dbgkern"
"rm GENERIC"
"cd /usr/src"
"make buildkernel KERNCONF=3D"/usr/dbgkern/DBGKERN""
"make installkernel KERNCONF=3D"/usr/dbgkern/DBGKERN""
Now, reboot the machine.
As for the second question, you can perform kernel debugging without a se=
rial cable. You have to type the command "gdb -k [-c name-of-core-dump-f=
ile]" into the shell while logged in as root, replacing name-of-core-dump=
-file with the name of the kernel core dump. Once gdb displays the (kgdb=
) prompt, you can use hbreak {[file:]function|address} to set a breakpoin=
t (maximum 4), bt to perform a backtrace of the stack, c to continue runn=
ing the kernel, next to step over function calls, step to step into funct=
ion calls, print expr to print the value of expr on the terminal screen, =
and quit to quit gdb.
Lucas
----- Original Message -----
From: Nick Triantos
Sent: Monday, July 07, 2003 11:57 AM
To: 'KAREN THODE'
Subject: RE: i386/53620: Kernel panics / reboots during install of 5.1 to=
40GB disk on 44
Hello,
Is there a link somewhere on the freebsd.org web site as to how to do tha=
t? Since I'm booting from the CD image, I'm not sure how I can get it to=
execute from a different kernel. I suppose I can build a special CD ima=
ge, is that what you'd suggest? I've also never done kernel-level debugg=
ing of bsd, I assume it's done via serial interface?
cheers,
-Nick
-----Original Message-----
From: KAREN THODE [mailto:thode12@msn.com] =20
Sent: Sunday, July 06, 2003 2:07 PM
To: freebsd-gnats-submit@FreeBSD.org; nick@triantos.com
Subject: Re: i386/53620: Kernel panics / reboots during install of 5.1 to=
40GB disk on 44
Do you think that you could build a debugging kernel with crashdumps enab=
led and then replicate the kernel panic? If you can, post a panic messag=
e and gdb backtrace as a follow-up.
Lucas
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<HTML><BODY STYLE=3D"font:10pt verdana; border:none;"><DIV>See if you can=
rebuild the system, but change the rw to ro for the entry in /etc/fstab =
for the root filesystem on ad0. Also, try not installing packages.<=
/DIV> <DIV> </DIV> <BLOCKQUOTE style=3D"PADDING-RIGHT: 0px; PADDING-=
LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT=
: 0px"> <DIV style=3D"FONT: 10pt Arial">----- Original Message -----</DIV=
> <DIV style=3D"BACKGROUND: #e4e4e4; FONT: 10pt Arial; COLOR: black"><B>F=
rom:</B> Nick Triantos</DIV> <DIV style=3D"FONT: 10pt Arial"><B>Sent:</B>=
Sunday, July 13, 2003 1:47 PM</DIV> <DIV style=3D"FONT: 10pt Arial"><B>T=
o:</B> 'KAREN THODE'; freebsd-gnats-submit@freebsd.org</DIV> <DIV style=3D=
"FONT: 10pt Arial"><B>Subject:</B> RE: i386/53620: Kernel panics / reboot=
s during install of 5.1 to 40GB disk on 44</DIV> <DIV> </DIV> <META =
content=3D"MSHTML 6.00.2800.1170" name=3DGENERATOR> <DIV><SPAN class=3D90=
6394518-13072003><FONT face=3Dverdana>Yes, thanks for checking. The=
problem, I think, is that sysinstall tries to install to ad0, though I'm=
not sure.</FONT></SPAN></DIV> <DIV><SPAN class=3D906394518-13072003><FON=
T face=3Dverdana></FONT></SPAN> </DIV> <DIV><SPAN class=3D906394518-=
13072003><FONT face=3Dverdana>This time I did not get a panic, instead, I=
just got the install overwriting my live system.</FONT></SPAN></DIV> <DI=
V><SPAN class=3D906394518-13072003></SPAN> </DIV> <DIV><SPAN class=3D=
906394518-13072003><FONT face=3Dverdana>regards,</FONT></SPAN></DIV> <DIV=
><SPAN class=3D906394518-13072003>-Nick</SPAN></DIV> <BLOCKQUOTE dir=3Dlt=
r style=3D"MARGIN-RIGHT: 0px"> <DIV></DIV> <DIV class=3DOutlookMessageHea=
der lang=3Den-us dir=3Dltr align=3Dleft><FONT face=3DTahoma>-----Original=
Message-----<BR><B>From:</B> KAREN THODE [mailto:thode12@msn.com] <BR><B=
>Sent:</B> Sunday, July 13, 2003 11:13 AM<BR><B>To:</B> Nick Triantos; fr=
eebsd-gnats-submit@freebsd.org<BR><B>Subject:</B> Re: i386/53620: Kernel =
panics / reboots during install of 5.1 to 40GB disk on 44<BR><BR></FONT><=
/DIV> <DIV>Did you add the dumpdev line to /etc/rc.conf?</DIV> <DIV> =
;</DIV> <BLOCKQUOTE style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGI=
N-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV sty=
le=3D"FONT: 10pt Arial">----- Original Message -----</DIV> <DIV style=3D"=
BACKGROUND: #e4e4e4; FONT: 10pt Arial; COLOR: black"><B>From:</B> Nick Tr=
iantos</DIV> <DIV style=3D"FONT: 10pt Arial"><B>Sent:</B> Saturday, July =
12, 2003 11:58 PM</DIV> <DIV style=3D"FONT: 10pt Arial"><B>To:</B> 'KAREN=
THODE'; freebsd-gnats-submit@freebsd.org</DIV> <DIV style=3D"FONT: 10pt =
Arial"><B>Subject:</B> RE: i386/53620: Kernel panics / reboots during ins=
tall of 5.1 to 40GB disk on 44</DIV> <DIV> </DIV> <META content=3D"M=
SHTML 6.00.2800.1170" name=3DGENERATOR> <DIV><SPAN class=3D562292904-1407=
2003><FONT face=3Dverdana>(re-sending, my mail server is having problems,=
not sure if it made it through)</FONT></SPAN></DIV> <DIV><SPAN class=3D5=
62292904-14072003><FONT face=3Dverdana></FONT></SPAN> </DIV> <DIV><S=
PAN class=3D562292904-14072003><FONT face=3Dverdana>Hi, this did not work=
as expected.</FONT></SPAN></DIV> <DIV><SPAN class=3D562292904-14072003><=
/SPAN> </DIV> <DIV><SPAN class=3D562292904-14072003><FONT face=3Dver=
dana>I built/installed a debug kernel, but when I ran /stand/sysinstall a=
fter booting with that kernel (from the 20GB disk), it seemed to only kno=
w how to install to /dev/ad0, which is the 20GB disk. It overwrote =
part of my working installation before I could cancel it. =
fdisk/disklabel worked ok to /dev/ad1, but the install of packages seeme=
d to want to force itself onto the live filesystem.</FONT></SPAN></DIV> <=
DIV><SPAN class=3D562292904-14072003><FONT face=3Dverdana></FONT></SPAN>&=
nbsp;</DIV> <DIV><SPAN class=3D562292904-14072003><FONT face=3Dverdana>(1=
) Is there something I could / should do to build a custom install CD wit=
h the debug kernel?</FONT></SPAN></DIV> <DIV><SPAN class=3D562292904-1407=
2003>(1a) I could install yet another hard disk in the machine that the C=
D could use as swap space</SPAN></DIV> <DIV><SPAN class=3D562292904-14072=
003><FONT face=3Dverdana></FONT></SPAN> </DIV> <DIV><SPAN class=3D56=
2292904-14072003><FONT face=3Dverdana>(2) Or maybe I can somehow mount al=
l of my working disk as a read-only mount?</FONT></SPAN></DIV> <DIV><SPAN=
class=3D562292904-14072003><FONT face=3Dverdana></FONT></SPAN> </DI=
V> <DIV><SPAN class=3D562292904-14072003><FONT face=3Dverdana>(3) It seem=
s I should be able to get sysinstall to forcibly write to /dev/ad1 only, =
but from reading over all the docs I can find, I could not see a way to d=
o that.</FONT></SPAN></DIV> <DIV><SPAN class=3D562292904-14072003><FONT f=
ace=3Dverdana></FONT></SPAN> </DIV> <DIV><SPAN class=3D562292904-140=
72003><FONT face=3Dverdana>(4) I could also use null-model to debug this,=
if it's reasonably easy to set up. The only compilication is that =
my other PCs all run WinXP, so I'd have to install a gdb client for windo=
ws, and probably cygwin.</FONT></SPAN></DIV> <DIV><SPAN class=3D562292904=
-14072003><FONT face=3Dverdana></FONT></SPAN> </DIV> <DIV><SPAN clas=
s=3D562292904-14072003><FONT face=3Dverdana>regards, and thanks for all t=
he help.</FONT></SPAN></DIV> <DIV><SPAN class=3D562292904-14072003></SPAN=
> </DIV> <DIV><SPAN class=3D562292904-14072003>-Nick</SPAN></DIV> <B=
LOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px"> <DIV></DIV> <DIV class=3D=
OutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft><FONT face=3DTah=
oma>-----Original Message-----<BR><B>From:</B> KAREN THODE [mailto:thode1=
2@msn.com] <BR><B>Sent:</B> Tuesday, July 08, 2003 4:02 PM<BR><B>To:</B> =
Nick Triantos; freebsd-gnats-submit@freebsd.org<BR><B>Subject:</B> Re: i3=
86/53620: Kernel panics / reboots during install of 5.1 to 40GB disk on 4=
4<BR><BR></FONT></DIV> <DIV> </DIV> <DIV>Boot off of the 20 GB hard =
drive. Now, you need to make a copy of <FONT face=3D"Verdana, Genev=
a, Arial, Sans-serif">/usr/src/sys/i386/conf/GENERIC</FONT> into a new di=
rectory called /usr/dbgkern. Now open up /usr/dbgkern/GENERIC in a =
text editor. Look for a line that says "#makeoptions DE=
BUG=3D-g" and remove the pound sign from the beginning. Now change =
"ident GENERIC" to "ident DBGKERN". Save this file=
as DBGKERN. Exit the editor. Now, type these commands (witho=
ut the outer set of quotes) into the console while logged in as root=
.</DIV> <DIV>"cd /usr/dbgkern"</DIV> <DIV>"rm GENERIC"</DIV> <DIV>"cd /us=
r/src"</DIV> <DIV>"make buildkernel KERNCONF=3D"/usr/dbgkern/DBGKERN""</D=
IV> <DIV>"make installkernel KERNCONF=3D"/usr/dbgkern/DBGKERN""</DIV> <DI=
V>Now, reboot the machine.</DIV> <DIV> </DIV> <DIV>As for the second=
question, you can perform kernel debugging without a serial cable. =
You have to type the command<FONT face=3DArial><EM> "</EM><FONT face=3D"=
Verdana, Geneva, Arial, Sans-serif">gdb -k [-c name-of-core-dump-file]</F=
ONT>"</FONT><FONT face=3D"Verdana, Geneva, Arial, Sans-serif"> into the s=
hell while logged in as root, replacing name-of-core-dump-file with the n=
ame of the kernel core dump. Once gdb displays the (kgdb) prompt, y=
ou can use hbreak {[file:]function|address} to set a breakpoint (maximum =
4), bt to perform a backtrace of the stack, c to continue running the ker=
nel, next to step over function calls, step to step into function calls, =
print expr to print the value of expr on the terminal screen, and quit to=
quit gdb.</FONT></DIV> <DIV> </DIV> <DIV>Lucas</DIV> <DIV>----- Ori=
ginal Message -----</DIV> <BLOCKQUOTE style=3D"PADDING-RIGHT: 0px; PADDIN=
G-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIG=
HT: 0px"> <DIV style=3D"BACKGROUND: #e4e4e4; FONT: 10pt Arial; COLOR: bla=
ck"><B>From:</B> Nick Triantos</DIV> <DIV style=3D"FONT: 10pt Arial"><B>S=
ent:</B> Monday, July 07, 2003 11:57 AM</DIV> <DIV style=3D"FONT: 10pt Ar=
ial"><B>To:</B> 'KAREN THODE'</DIV> <DIV style=3D"FONT: 10pt Arial"><B>Su=
bject:</B> RE: i386/53620: Kernel panics / reboots during install of 5.1 =
to 40GB disk on 44</DIV> <DIV> </DIV> <META content=3D"MSHTML 6.00.2=
800.1170" name=3DGENERATOR> <DIV><SPAN class=3D101265516-07072003><FONT f=
ace=3Dverdana>Hello,</FONT></SPAN></DIV> <DIV><SPAN class=3D101265516-070=
72003></SPAN> </DIV> <DIV><SPAN class=3D101265516-07072003><FONT fac=
e=3Dverdana>Is there a link somewhere on the freebsd.org web site as to h=
ow to do that? Since I'm booting from the CD image, I'm not sure ho=
w I can get it to execute from a different kernel. I suppose I can =
build a special CD image, is that what you'd suggest? I've also nev=
er done kernel-level debugging of bsd, I assume it's done via serial inte=
rface?</FONT></SPAN></DIV> <DIV><SPAN class=3D101265516-07072003></SPAN>&=
nbsp;</DIV> <DIV><SPAN class=3D101265516-07072003><FONT face=3Dverdana>ch=
eers,</FONT></SPAN></DIV> <DIV><SPAN class=3D101265516-07072003>-Nick</SP=
AN></DIV> <BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px"> <DIV></DIV> =
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft><FO=
NT face=3DTahoma>-----Original Message-----<BR><B>From:</B> KAREN THODE [=
mailto:thode12@msn.com] <BR><B>Sent:</B> Sunday, July 06, 2003 2:07 PM<BR=
><B>To:</B> freebsd-gnats-submit@FreeBSD.org; nick@triantos.com<BR><B>Sub=
ject:</B> Re: i386/53620: Kernel panics / reboots during install of 5.1 t=
o 40GB disk on 44<BR><BR></FONT></DIV> <DIV>Do you think that you could b=
uild a debugging kernel with crashdumps enabled and then replicate t=
he kernel panic? If you can, post a panic message and gdb backtrace=
as a follow-up.</DIV> <DIV> </DIV> <DIV>Lucas<BR><BR></DIV></BLOCKQ=
UOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></B=
ODY></HTML>
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