I'm trying to set up 5.6/amd64 on a new-from-the-factory 750GB disk
which I've just had installed in a Thinkpad T60. (This Thinkpad had
previously been running 5.5/amd64 using an older/smaller disk, with
no problems).
I want to try having the entire new disk secured with softraid crypto.
So, I booted the Thinkpad (with the new disk installed) from my 5.6/amd64
CD (dmesg below) and dropped into the shell. The dmesg shows that the
bsd.rd kernel detected the new disk as sd0.
To try to set up the new disk, I first did
# fdisk -i sd0
to set up the MBR partitions, then
# disklabel -E sd0
to add a single 'a' partition of type 'RAID' containing all the space
after the first 64 sectors (reserved as per "Disklabel tricks and tips"
in section 14.3 of the OpenBSD FAQ). So far so good:
# fdisk sd0
Disk: sd0 geometry: 91201/255/63 [1465149168 Sectors]
Offset: 0 Signature: 0xAA55
Starting Ending LBA Info:
#: id C H S - C H S [ start: size ]
-------------------------------------------------------------------------------
0: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
1: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
2: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
*3: A6 0 1 2 - 91200 254 63 [ 64: 1465144001 ] OpenBSD
# disklabel sd0
# /dev/rsd0c:
type: SCSI
disk: SCSI disk
label: WDC WD7500BPKX-2
duid: 407d46caba526d90
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 255
sectors/cylinder: 16065
cylinders: 91201
total sectors: 1465149168
boundstart: 64
boundend: 1465144065
drivedata: 0
16 partitions:
# size offset fstype [fsize bsize cpg]
a: 1465144001 64 RAID
c: 1465149168 0 unused
#
Next I tried to follow the instructions in section 14.21 of the FAQ
and zero the first megabyte of the new partition:
# dd if=/dev/zero bs=1m count=1 of=/dev/rsd0a
Now the "strange behavior": Checking the output of fdisk and disklabel
again as a sanity check, I find that the fdisk output is unchanged (as it
should be!), but disklabel now shows that the newly-created 'a' partition
has vanished, and the duid has been zeroed:
# disklabel sd0
# /dev/rsd0c:
type: SCSI
disk: SCSI disk
label: WDC WD7500BPKX-2
duid: 0000000000000000
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 255
sectors/cylinder: 16065
cylinders: 91201
total sectors: 1465149168
boundstart: 64
boundend: 1465144065
drivedata: 0
16 partitions:
# size offset fstype [fsize bsize cpg]
c: 1465149168 0 unused
#
It's as if the 'a' partition I created (which started at offset 64) was
actually overlapping the disklabel metadata!
One other data point: I also saw the same behavior ('a' partition gone,
duid zeroed) when I repeated the same commands but with the (recreated)
'a' partition having the default '4.2BSD' fstype instead of 'RAID'.
Can anyone clue me in as to what's I'm doing wrong?
I thought I understood disk partitioning (and I'm fully aware that
overlapping partitions are doubleplusungood!), but I have the feeling
I'm missing something obvious here....
--- begin dmesg ---
OpenBSD 5.6 (RAMDISK_CD) #303: Fri Aug 8 00:25:26 MDT 2014
dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/RAMDISK_CD
real mem = 3203203072 (3054MB)
avail mem = 3112607744 (2968MB)
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xe0010 (68 entries)
bios0: vendor LENOVO version "7IET23WW (1.04 )" date 12/27/2006
bios0: LENOVO 87424GU
acpi0 at bios0: rev 2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP SSDT ECDT TCPA APIC MCFG HPET SLIC BOOT SSDT SSDT SSDT
SSDT
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz, 1995.33 MHz
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,NXE,LONG,LAHF,PERF
cpu0: 4MB 64b/line 16-way L2 cache
cpu0: apic clock running at 166MHz
cpu at mainbus0: not configured
ioapic0 at mainbus0: apid 1 pa 0xfec00000, version 20, 24 pins
ioapic0: misconfigured as apic 2, remapped to apid 1
acpi0: WARNING EC not initialized
acpi0: WARNING EC not initialized
acpi0: WARNING EC not initialized
acpi0: WARNING EC not initialized
acpi0: WARNING EC not initialized
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 1 (AGP_)
acpiprt2 at acpi0: bus 2 (EXP0)
acpiprt3 at acpi0: bus 3 (EXP1)
acpiprt4 at acpi0: bus 4 (EXP2)
acpiprt5 at acpi0: bus 12 (EXP3)
acpiprt6 at acpi0: bus 21 (PCI1)
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel 82945GM Host" rev 0x03
ppb0 at pci0 dev 1 function 0 "Intel 82945GM PCIE" rev 0x03: msi
pci1 at ppb0 bus 1
vga1 at pci1 dev 0 function 0 "ATI Radeon Mobility X1400" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
"Intel 82801GB HD Audio" rev 0x02 at pci0 dev 27 function 0 not configured
ppb1 at pci0 dev 28 function 0 "Intel 82801GB PCIE" rev 0x02: msi
pci2 at ppb1 bus 2
em0 at pci2 dev 0 function 0 "Intel 82573L" rev 0x00: msi, address
00:16:41:e4:89:7b
ppb2 at pci0 dev 28 function 1 "Intel 82801GB PCIE" rev 0x02: msi
pci3 at ppb2 bus 3
athn0 at pci3 dev 0 function 0 "Atheros AR5418" rev 0x01: apic 1 int 17
athn0: MAC AR5418 rev 2, RF AR5133 (2T3R), ROM rev 3, address 00:19:7e:6d:f9:88
ppb3 at pci0 dev 28 function 2 "Intel 82801GB PCIE" rev 0x02: msi
pci4 at ppb3 bus 4
ppb4 at pci0 dev 28 function 3 "Intel 82801GB PCIE" rev 0x02: msi
pci5 at ppb4 bus 12
uhci0 at pci0 dev 29 function 0 "Intel 82801GB USB" rev 0x02: apic 1 int 16
uhci1 at pci0 dev 29 function 1 "Intel 82801GB USB" rev 0x02: apic 1 int 17
uhci2 at pci0 dev 29 function 2 "Intel 82801GB USB" rev 0x02: apic 1 int 18
uhci3 at pci0 dev 29 function 3 "Intel 82801GB USB" rev 0x02: apic 1 int 19
ehci0 at pci0 dev 29 function 7 "Intel 82801GB USB" rev 0x02: apic 1 int 19
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
ppb5 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0xe2
pci6 at ppb5 bus 21
cbb0 at pci6 dev 0 function 0 "TI PCI1510 CardBus" rev 0x00: apic 1 int 16
cardslot0 at cbb0 slot 0 flags 0
cardbus0 at cardslot0: bus 22 device 0 cacheline 0x8, lattimer 0xb0
pcmcia0 at cardslot0
"Intel 82801GBM LPC" rev 0x02 at pci0 dev 31 function 0 not configured
pciide0 at pci0 dev 31 function 1 "Intel 82801GB IDE" rev 0x02: DMA, channel 0
configured to compatibility, channel 1 configured to compatibility
atapiscsi0 at pciide0 channel 0 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <HL-DT-ST, DVDRAM GSA-4083N, 1.00> ATAPI 5/cdrom
removable
cd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
pciide0: channel 1 ignored (disabled)
ahci0 at pci0 dev 31 function 2 "Intel 82801GBM AHCI" rev 0x02: msi, AHCI 1.1
scsibus1 at ahci0: 32 targets
sd0 at scsibus1 targ 0 lun 0: <ATA, WDC WD7500BPKX-2, 01.0> SCSI3 0/direct
fixed naa.50014ee604d7ebda
sd0: 715404MB, 512 bytes/sector, 1465149168 sectors
"Intel 82801GB SMBus" rev 0x02 at pci0 dev 31 function 3 not configured
usb1 at uhci0: USB revision 1.0
uhub1 at usb1 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb2 at uhci1: USB revision 1.0
uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb3 at uhci2: USB revision 1.0
uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb4 at uhci3: USB revision 1.0
uhub4 at usb4 "Intel UHCI root hub" rev 1.00/1.00 addr 1
isa0 at mainbus0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
softraid0 at root
scsibus2 at softraid0: 256 targets
root on rd0a swap on rd0b dump on rd0b
--- end dmesg ---
thanks,
--
-- "Jonathan Thornburg [remove -animal to reply]"
<jth...@astro.indiana-zebra.edu>
Dept of Astronomy & IUCSS, Indiana University, Bloomington, Indiana, USA
"There was of course no way of knowing whether you were being watched
at any given moment. How often, or on what system, the Thought Police
plugged in on any individual wire was guesswork. It was even conceivable
that they watched everybody all the time." -- George Orwell, "1984"
