[Techtalk] Dump constipated and kernel panic

[Conor Daly]

Sorry about the subject line but I couldn't resist :-)

Running RH7.2 kernel 2.4.7-10 ext3 filesystems / on /dev/hda2, 
/home on /dev/hda4 with dump v0.4b29 (upgraded from 0.4b22) and getting 
a kernel panic

command is

dump -0 -B 665600 -f /home/dump.dat -F "dump2CDR" -z9 /

where /home is a seperate filesystem and dump2CDR burns /home/dump.dat to
CDRW via mkisofs.  The dump proceeds to do the first section, builds
/home/dump.dat and hangs.  Sometimes the system hangs hard, bouncing the 
power is the only option, sometimes I get this kernel oops.  I thought 
initially it was related to the CDRW drive (NEC something) but same 
symptoms appear with a different CDRW drive (LG).  
I upgraded dump from 0.4b22 to 0.4b29 (latest on dump.sourceforge.net)
with the same result.  After a hard hang, on reboot, /dev/hda2 fscks and 
returns OK while I haven't done a fsck on /dev/hda4 (init does a "recovering 
journal" instead).  

I seem to remember Linus said something about not using dump with ext3
filesystems and I wonder if it's related.  Haven't tried a kernel upgrade yet.  

Thoughts (answers!) anyone?

Kernel oops below

Oops:	0000
CPU:	0
EIP:	0010:[<co198c26>]
EFLAGS:	00010082
eax: c02dde20	ebx: c02dde60	ecx: 0000000e	edx: 0000000e
esi: c13c9060	edi: 00000286	ebp: c02dde20	esp: c0257f44
ds: 0018	es: 0018	ss: 0018
Process swapper (Pid: 0, stackpage = c0257000)

Stack:	c018cc39 00000008 c02dde60 c0195390 c13db5a0 04000001 0000000e c0257fa8
	c0108228 0000000e c13c9060 c0257fa8 c0257fa8 0000000e c028fac0 c13db5a0
	c01083a8 0000000e c0257fa8 c13db5a0 c0105390 c0256000 c0256000 c0105390

Call Trace:  [<c018cc39>] [<c0195390>] [<0010822a>] [<c01083a8>] [<c0105390>]
[<c0105390>] [<c020f180>] [<c0105390>] [<c0105390>] [<c01053b3>] [<c0105432>]

[<c0105000>]

Code: 24 08 83 fa 04 75 09 89 44 24 04 e9 da fe ff ff 89 44 24 08

<0> Kernel Panic: Aiee, Killing interrupt handler!
    In interrupt handler - not syncing

Conor
-- 
Conor Daly <conor.daly at oceanfree.net>

Domestic Sysadmin :-)
---------------------
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