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Date:      Mon, 18 May 1998 11:04:21 +0200
From:      Jos Backus <J.G.E.Backus@urc.tue.nl>
To:        freebsd-questions@FreeBSD.ORG
Subject:   Kernel panic: lockmgr: locking against myself
Message-ID:  <19980518110421.A27018@asterix.urc.tue.nl>

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[I initially this sent to current, which was probably inappropriate. My
 apologies for this and the duplicate!]

  Hello all,

I'm trying to move my FreeBSD partition from sd1 to sd0. While trying to
disklabel /dev/rsd0s4 using sysinstall the system panics, and savecore says:

dumplo = 65536 (128 * 512)
savecore: reboot after panic: lockmgr: locking against myself
savecore: system went down at Fri May 15 23:07:07 1998
savecore: no dump, not enough free space on device

The last message indicates one other issue I am trying to address by the move
(more swap).

More info:
# fdisk sd0
******* Working on device /dev/rsd0 *******
parameters extracted from in-core disklabel are:
cylinders=530 heads=255 sectors/track=63 (16065 blks/cyl)

parameters to be used for BIOS calculations are:
cylinders=530 heads=255 sectors/track=63 (16065 blks/cyl)

Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 5,(Extended DOS)
    start 2056320, size 2265165 (1106 Meg), flag 0
	beg: cyl 128/ sector 1/ head 0;
	end: cyl 268/ sector 63/ head 254
The data for partition 2 is:
sysid 6,(Primary 'big' DOS (> 32MB))
    start 16065, size 2040255 (996 Meg), flag 0
	beg: cyl 1/ sector 1/ head 0;
	end: cyl 127/ sector 63/ head 254
The data for partition 3 is:
sysid 10,(OS/2 Boot Manager or OPUS)
    start 63, size 16002 (7 Meg), flag 80 (active)
	beg: cyl 0/ sector 1/ head 1;
	end: cyl 0/ sector 63/ head 254
The data for partition 4 is:
sysid 165,(FreeBSD/NetBSD/386BSD)
    start 4321485, size 4192965 (2047 Meg), flag 0
	beg: cyl 269/ sector 1/ head 0;
	end: cyl 529/ sector 63/ head 254

This is with
FreeBSD 3.0-CURRENT #5: Wed May 13 23:36:35 CEST 1998
    root@jos.mp-c.com:/usr/src/sys/compile/JOS

ahc0: <Adaptec 2940 Ultra SCSI host adapter> rev 0x01 int a irq 9 on pci0.10.0
ahc0: aic7880 Wide Channel, SCSI Id=7, 16/255 SCBs
scbus0 at ahc0 bus 0
ahc0: target 0 Tagged Queuing Device
sd0 at scbus0 target 0 lun 0
sd0: <WDIGTL ENTERPRISE 1.91> type 0 fixed SCSI 2
sd0: Direct-Access 4157MB (8515173 512 byte sectors)
ahc0: target 1 Tagged Queuing Device
sd1 at scbus0 target 1 lun 0
sd1: <IBM DORS-32160W WA6A> type 0 fixed SCSI 2
sd1: Direct-Access 2063MB (4226725 512 byte sectors)

The Adaptec BIOS version is 1.32 (in case that matters). BIOS translation for
drives > 1GB is turned on.

I tried doing this with the latest boot.flp, with identical results.

Thanks for any info anyone may be able to provide!

Cheers,
-- 
Jos Backus                 _/  _/_/_/        "Modularity is not a hack."
                          _/  _/   _/                -- D. J. Bernstein
                         _/  _/_/_/             
                    _/  _/  _/    _/
jbackus@plex.nl     _/_/   _/_/_/            use Std::Disclaimer;

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