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Date:      Tue, 25 Feb 1997 19:48:58 -0500 (EST)
From:      Thomas David Rivers <ponds!rivers@dg-rtp.dg.com>
To:        ponds!freefall.cdrom.com!freebsd-hackers, ponds!nemeton.com.au!giles
Subject:   Re: dup alloc panic
Message-ID:  <199702260048.TAA19064@lakes.water.net>

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Giles Lean writes:
> 
> On Mon, 17 Feb 1997 19:44:08 -0500 (EST)  Thomas David Rivers wrote:
> 
> > 	1) Trash inode # 7680.
> > 	2) newfs the file system
> 
> I ran this in a loop for 24 hours, checking after each newfs for
> damage.  No dice.
> 
> I'll try it again later with 'make world' or similar running on the
> same disk to provide some load.
> 
> Can you send me a dumpfs output for the filesystem?  I'd like to see
> the geometry.
> 
> Regards,
> 
> Giles
> 

 I've got the dumpfs output - I'm cc'ing to hackers so this will
go in the archives...

 I don't see anything particular that "pops out" - but I'm no file
system hacker.

 This is the output of:

	dumpfs /dev/rsd0a

 immediately after doing:

	newfs -b 8192 -f 1024 /dev/rsd0a

[The time stamp is wrong because the machine's internal clock is confused,
but I just a minute ago did this...]

 Recall - it's inode #7680 that's causing my problems...

 Let me know if there's anything I can do... 

	- Dave Rivers -

p.s. Giles - a high of 56-degrees F today in comfortable North Carolina :-)


Magic	11954	time	Sun Feb  9 00:25:05 1997
cylgrp	dynamic	inodes	4.4BSD
nbfree	12308	ndir	1	nifree	30717	nffree	14
ncg	4	ncyl	50	size	102400	blocks	98479
bsize	8192	shift	13	mask	0xffffe000
fsize	1024	shift	10	mask	0xfffffc00
frag	8	shift	3	fsbtodb	1
cpg	16	bpg	4096	fpg	32768	ipg	7680
minfree	8%	optim	time	maxcontig 7	maxbpg	2048
rotdelay 0ms	headswitch 0us	trackseek 0us	rps	60
ntrak	1	nsect	4096	npsect	4096	spc	4096
symlinklen 60	trackskew 0	interleave 1	contigsumsize 7
nindir	2048	inopb	64	nspf	2
sblkno	16	cblkno	24	iblkno	32	dblkno	992
sbsize	2048	cgsize	6144	cgoffset 2048	cgmask	0xffffffff
csaddr	992	cssize	1024	shift	9	mask	0xfffffe00
cgrotor	0	fmod	0	ronly	0	clean	1
(no rotational position table)

cs[].cs_(nbfree,ndir,nifree,nffree):
	(3970,1,7677,14) (3974,0,7680,0) (3974,0,7680,0) (390,0,7680,0) 
cylinders in last group 2
blocks in last group 512


cg 0:
magic	90255	tell	6000	time	Sun Feb  9 00:25:05 1997
cgx	0	ncyl	16	niblk	7680	ndblk	32768
nbfree	3970	ndir	1	nifree	7677	nffree	14
rotor	0	irotor	0	frotor	0
frsum	0	0	0	0	0	0	2
sum of frsum: 14
clusters 1-6:	0	0	0	0	0	0
clusters size 7 and over: 1
clusters free:	126-4095
iused:	0-2
free:	993-999, 1001-32767
b:
   c0:	(130)	 130
   c1:	(256)	 256
   c2:	(256)	 256
   c3:	(256)	 256
   c4:	(256)	 256
   c5:	(256)	 256
   c6:	(256)	 256
   c7:	(256)	 256
   c8:	(256)	 256
   c9:	(256)	 256
   c10:	(256)	 256
   c11:	(256)	 256
   c12:	(256)	 256
   c13:	(256)	 256
   c14:	(256)	 256
   c15:	(256)	 256

cg 1:
magic	90255	tell	2006000	time	Sun Feb  9 00:25:05 1997
cgx	1	ncyl	16	niblk	7680	ndblk	32768
nbfree	3974	ndir	0	nifree	7680	nffree	0
rotor	0	irotor	0	frotor	0
frsum	0	0	0	0	0	0	0
sum of frsum: 0
clusters 1-6:	0	1	0	0	0	0
clusters size 7 and over: 1
clusters free:	0-1, 124-4095
iused:	
free:	0-15, 992-32767
b:
   c0:	(134)	 134
   c1:	(256)	 256
   c2:	(256)	 256
   c3:	(256)	 256
   c4:	(256)	 256
   c5:	(256)	 256
   c6:	(256)	 256
   c7:	(256)	 256
   c8:	(256)	 256
   c9:	(256)	 256
   c10:	(256)	 256
   c11:	(256)	 256
   c12:	(256)	 256
   c13:	(256)	 256
   c14:	(256)	 256
   c15:	(256)	 256

cg 2:
magic	90255	tell	4006000	time	Sun Feb  9 00:25:05 1997
cgx	2	ncyl	16	niblk	7680	ndblk	32768
nbfree	3974	ndir	0	nifree	7680	nffree	0
rotor	0	irotor	0	frotor	0
frsum	0	0	0	0	0	0	0
sum of frsum: 0
clusters 1-6:	0	1	0	0	0	0
clusters size 7 and over: 1
clusters free:	0-1, 124-4095
iused:	
free:	0-15, 992-32767
b:
   c0:	(134)	 134
   c1:	(256)	 256
   c2:	(256)	 256
   c3:	(256)	 256
   c4:	(256)	 256
   c5:	(256)	 256
   c6:	(256)	 256
   c7:	(256)	 256
   c8:	(256)	 256
   c9:	(256)	 256
   c10:	(256)	 256
   c11:	(256)	 256
   c12:	(256)	 256
   c13:	(256)	 256
   c14:	(256)	 256
   c15:	(256)	 256

cg 3:
magic	90255	tell	6006000	time	Sun Feb  9 00:25:05 1997
cgx	3	ncyl	2	niblk	7680	ndblk	4096
nbfree	390	ndir	0	nifree	7680	nffree	0
rotor	0	irotor	0	frotor	0
frsum	0	0	0	0	0	0	0
sum of frsum: 0
clusters 1-6:	0	1	0	0	0	0
clusters size 7 and over: 1
clusters free:	0-1, 124-511
iused:	
free:	0-15, 992-4095
b:
   c0:	(134)	 134
   c1:	(256)	 256



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