On Sun, Oct 17, 2010 at 06:57:14AM -0400, Jonathan Thornburg wrote:
> Summary
> -------
> My primary laptop ("nitrogen") died, so I moved its disk to a backup
> laptop ("oxygen"). That laptop then died. :( I have now moved the
> former-nitrogen-disk to an external enclosure so that I can access my
> files via USB from still another laptop ("silver").
>
> When I connect the USB cable to silver I see the usual dmesg lines.
> But the former-nitrogen-disk contents are "wierd":
> * fdisk and disklabel look fine, but
> * if I mount any one of the partitions,
> * 'df -i' looks fine (shows lots of space & inodes used)
> * but 'ls -a' and 'echo *' say there are no files present
>
> If I try to fsck any of the partitions, I get the following error
> # fsck -p /dev/rsd1a
> CANNOT READ: BLK 128
> /dev/rsd1a: UNEXPECTED INCONSISTENCY; RUN fsck_ffs MANUALLY.
> # fsck -n /dev/rsd1a
> ** /dev/rsd1a (NO WRITE)
>
> CANNOT READ: BLK 128
> CONTINUE? yes
>
> THE FOLLOWING DISK SECTORS COULD NOT BE READ: 128, 129, 130, 131, 132, 133,
> 134, 135, 136, 137, 138, 139, 140, 141, 142, 143,
>
> LOOK FOR ALTERNATE SUPERBLOCKS? no
>
> #
> What's suspicious is that I get this identical message (including the
> exact same sector numbers) for *any* partition. While I could certainly
> imagine that whatever broke nitrogen and oxygen managed to corrupt the
> disk contents, it seems implausible that it would garble the exact same
> list of sectors on each of several different FFS partitions.
The sector numbers are relative to the start of the partitition. So
it's no surprise the numbers are the same.
It looks like large parts of your disk cannot be read anymore. Try
scanning for alernate superblocks, that might help in reconstructing
yor metadata. But it looks pretty hopeless (unless the USB enclosure
is your problem).
-Otto
>
> Instead, my symptoms look more like a disk-addressing mixup between
> oxygen/nitrogen and the external enclosure.
>
> Can anyone suggest (in more detail) what's going on here, and/or what
> I can do to fix it (i.e., access the former-nitrogen-disk filesystems
> from another laptop)? I'd at least like to understand the problem a
> bit before I go blindly poking around with fsck...
>
>
> Further details
> ---------------
> * oxygen and nitrogen are both Thinkpad T42 laptops, and were running
> 4.6-stable/i386; dmesg below
> * silver is an HP Pavillion dv4, freshly installed with 4.7-release/i386
> from the CD set
> * I know silver's USB system & the USB cable are ok, because I just used
> them (including the same USB cable) to recover a week-old backup copy
> of my home directory from an (another) external USB disk
> * the former-nitrogen-disk is a Hitachi HTS541616J9AT00 160GB 2.5" PATA
> disk. The external enclosure is labelled "Rocketfish RF-PHD25 2.5"
> Enclosure kit for hard drives"; it (and the disk within) is powered
> via the USB connection.
>
> The dmesg when connecting the USB cable to the external enclosure is:
> > sd1 at scsibus2 targ 1 lun 0: <Hitachi, HTS541616J9AT00, 0 0> SCSI0
> > 0/direct fixed
> > sd1: 152627MB, 512 bytes/sec, 312581808 sec total
> The size and sector count matches those reported in nitrogen's dmesg
> (given below) back when it was working properly.
>
> Here are the fdisk and disklabel output:
> # fdisk sd1
> Disk: sd1 geometry: 19457/255/63 [312581808 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 1 - 19456 239 63 [ 63: 312575697 ] OpenBSD
>
> # disklabel sd1
> # /dev/rsd1c:
> type: ESDI
> disk: ESDI/IDE disk
> label: Hitachi HTS54161
> flags:
> bytes/sector: 512
> sectors/track: 63
> tracks/cylinder: 240
> sectors/cylinder: 15120
> cylinders: 20673
> total sectors: 312581808
> rpm: 3600
> interleave: 1
> boundstart: 63
> boundend: 312575760
> drivedata: 0
>
> 16 partitions:
> # size offset fstype [fsize bsize cpg]
> a: 1058337 63 4.2BSD 2048 16384 1
> b: 4203360 1058400 swap
> c: 312581808 0 unused
> d: 1058400 5261760 4.2BSD 2048 16384 1
> e: 1058400 6320160 4.2BSD 2048 16384 1
> f: 1058400 7378560 4.2BSD 2048 16384 1
> g: 15739920 8436960 4.2BSD 2048 16384 1
> h: 15739920 24176880 4.2BSD 2048 16384 1
> j: 272658960 39916800 4.2BSD 2048 16384 1
> #
>
> Here is what mounting a partition looked like (before I noticed the
> fsck anomolies):
> # mount -r /dev/sd1a /mnt
> # cd /mnt
> # df -hi .
> Filesystem Size Used Avail Capacity iused ifree %iused Mounted on
> /dev/sd1a 507M 177M 304M 37% 5388 77170 7% /mnt
> # ls -lFgd .
> drwxr-xr-x 21 root wheel 1024 Oct 15 16:01 ./
> # ls -la
> # echo *
> echo: No match.
> #
>
> This partition (the "a" one) should be an FFS filesystem containing
> nitrogen's root partition.
>
> nitrogen's dmesg:
> --- begin dmesg ---
> Date: Wed, 28 Oct 2009 11:39:34 -0400 (EDT)
> From: Jonathan Thornburg <[email protected]>
> To: [email protected]
> Subject: IBM/Lenovo Thinkpad T42 laptop, X works fine
>
> OpenBSD 4.6 (GENERIC) #58: Thu Jul 9 21:24:42 MDT 2009
> [email protected]:/usr/src/sys/arch/i386/compile/GENERIC
> cpu0: Intel(R) Pentium(R) M processor 1.80GHz ("GenuineIntel" 686-class) 1.80
> GHz
> cpu0:
> FPU,V86,DE,PSE,TSC,MSR,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,TM,SBF,EST,TM2
> real mem = 2146398208 (2046MB)
> avail mem = 2066685952 (1970MB)
> mainbus0 at root
> bios0 at mainbus0: AT/286+ BIOS, date 06/18/04, BIOS32 rev. 0 @ 0xfd750,
> SMBIOS rev. 2.33 @ 0xe0010 (61 entries)
> bios0: vendor IBM version "1RETCDWW (3.06f)" date 06/18/2004
> bios0: IBM 23738ZU
> apm0 at bios0: Power Management spec V1.2
> apm0: battery life expectancy 97%
> apm0: AC on, battery charge high
> acpi at bios0 function 0x0 not configured
> pcibios0 at bios0: rev 2.1 @ 0xfd6e0/0x920
> pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdea0/272 (15 entries)
> pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82371FB ISA" rev 0x00)
> pcibios0: PCI bus #6 is the last bus
> bios0: ROM list: 0xc0000/0x10000 0xe0000/0x10000
> cpu0 at mainbus0: (uniprocessor)
> cpu0: Enhanced SpeedStep 1799 MHz: speeds: 1800, 1600, 1400, 1200, 1000, 800,
> 600 MHz
> pci0 at mainbus0 bus 0: configuration mode 1 (bios)
> io address conflict 0x5800/0x8
> io address conflict 0x5808/0x4
> io address conflict 0x5810/0x8
> io address conflict 0x580c/0x4
> pchb0 at pci0 dev 0 function 0 "Intel 82855PM Host" rev 0x03
> intelagp0 at pchb0
> agp0 at intelagp0: aperture at 0xd0000000, size 0x10000000
> ppb0 at pci0 dev 1 function 0 "Intel 82855PM AGP" rev 0x03
> pci1 at ppb0 bus 1
> vga1 at pci1 dev 0 function 0 "ATI Radeon Mobility M10" rev 0x00
> wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
> wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
> radeondrm0 at vga1: irq 11
> drm0 at radeondrm0
> uhci0 at pci0 dev 29 function 0 "Intel 82801DB USB" rev 0x01: irq 11
> uhci1 at pci0 dev 29 function 1 "Intel 82801DB USB" rev 0x01: irq 11
> uhci2 at pci0 dev 29 function 2 "Intel 82801DB USB" rev 0x01: irq 11
> ehci0 at pci0 dev 29 function 7 "Intel 82801DB USB" rev 0x01: irq 11
> usb0 at ehci0: USB revision 2.0
> uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
> ppb1 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0x81
> pci2 at ppb1 bus 2
> mem address conflict 0xb0000000/0x1000
> mem address conflict 0xb1000000/0x1000
> cbb0 at pci2 dev 0 function 0 "TI PCI4520 CardBus" rev 0x01: irq 11
> cbb1 at pci2 dev 0 function 1 "TI PCI4520 CardBus" rev 0x01: irq 11
> em0 at pci2 dev 1 function 0 "Intel PRO/1000MT (82540EP)" rev 0x03: irq 11,
> address 00:0d:60:fc:eb:f8
> ath0 at pci2 dev 2 function 0 "Atheros AR5212 (IBM MiniPCI)" rev 0x01: irq 11
> ath0: AR5213 5.6 phy 4.1 rf5111 1.7 rf2111 2.3, WOR1W, address
> 00:05:4e:4b:1a:8f
> cardslot0 at cbb0 slot 0 flags 0
> cardbus0 at cardslot0: bus 3 device 0 cacheline 0x8, lattimer 0xb0
> pcmcia0 at cardslot0
> cardslot1 at cbb1 slot 1 flags 0
> cardbus1 at cardslot1: bus 6 device 0 cacheline 0x8, lattimer 0xb0
> pcmcia1 at cardslot1
> ichpcib0 at pci0 dev 31 function 0 "Intel 82801DBM LPC" rev 0x01: 24-bit
> timer at 3579545Hz
> pciide0 at pci0 dev 31 function 1 "Intel 82801DBM IDE" rev 0x01: DMA, channel
> 0 configured to compatibility, channel 1 configured to compatibility
> wd0 at pciide0 channel 0 drive 0: <Hitachi HTS541616J9AT00>
> wd0: 16-sector PIO, LBA48, 152627MB, 312581808 sectors
> wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5
> atapiscsi0 at pciide0 channel 1 drive 0
> scsibus0 at atapiscsi0: 2 targets
> cd0 at scsibus0 targ 0 lun 0: <HL-DT-ST, RW/DVD GCC-4242N, 0201> ATAPI
> 5/cdrom removable
> cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
> ichiic0 at pci0 dev 31 function 3 "Intel 82801DB SMBus" rev 0x01: irq 11
> iic0 at ichiic0
> spdmem0 at iic0 addr 0x50: 1GB DDR SDRAM non-parity PC2700CL2.5
> spdmem1 at iic0 addr 0x51: 1GB DDR SDRAM non-parity PC2700CL2.5
> auich0 at pci0 dev 31 function 5 "Intel 82801DB AC97" rev 0x01: irq 11, ICH4
> AC97
> ac97: codec id 0x41445374 (Analog Devices AD1981B)
> ac97: codec features headphone, 20 bit DAC, No 3D Stereo
> audio0 at auich0
> "Intel 82801DB Modem" rev 0x01 at pci0 dev 31 function 6 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
> isa0 at ichpcib0
> isadma0 at isa0
> com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
> 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
> pms0 at pckbc0 (aux slot)
> pckbc0: using irq 12 for aux slot
> wsmouse0 at pms0 mux 0
> pcppi0 at isa0 port 0x61
> midi0 at pcppi0: <PC speaker>
> spkr0 at pcppi0
> lpt2 at isa0 port 0x3bc/4: polled
> aps0 at isa0 port 0x1600/31
> npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
> biomask efed netmask efed ttymask ffff
> mtrr: Pentium Pro MTRR support
> softraid0 at root
> root on wd0a swap on wd0b dump on wd0b
> --- end dmesg ---
>
> --
> -- "Jonathan Thornburg [remove -animal to reply]"
> <[email protected]>
> Dept of Astronomy, Indiana University, Bloomington, Indiana, USA
> "Washing one's hands of the conflict between the powerful and the
> powerless means to side with the powerful, not to be neutral."
> -- quote by Freire / poster by Oxfam
