freebsd stable - Apr 2006 - GEOM_RAID3: Device datos is broken, too few valid components

Hello list,

 Last night one disk of my desktop machine dead causing a hard lock of the
computer. It was a component of a mirror volume so it wasn't as serious as 
it initially looked. 

 Unfortunately, the metadata structure of my data partition (a geom raid3 
array with tree components	) seems to be corrupted by this hard lock, 
the following message is scrolled constantly on the screen:

GEOM_RAID3: Device datos created (id=3217021940).
GEOM_RAID3: Device datos: provider ad6s2 detected.
GEOM_RAID3: Device datos: provider ad5s2 detected.
GEOM_RAID3: Device datos: provider ad4s2 detected.
GEOM_RAID3: Component ad6s2 (device datos) broken, skipping.
GEOM_RAID3: Component ad4s2 (device datos) broken, skipping.
GEOM_RAID3: Device datos is broken, too few valid components.
GEOM_RAID3: Device datos destroyed.

Checking the search engine results it isn't a very usual problem, the advice
in the returned hits is rerunning "graid label -h datos ad4s2 ad5s2
ad6s2",
but before of erasing all my data I would like to ask to list members. 

How dangerous is running the mentioned command in this context?

Thank you.

Copyright (c) 1992-2006 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
	The Regents of the University of California. All rights reserved.
FreeBSD 6.1-PRERELEASE #2: Fri Mar 24 01:46:58 CET 2006
    root@:/usr/local/obj/usr/local/src/sys/HOME
ACPI APIC Table: <Nvidia AWRDACPI>
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Athlon(tm) XP 2800+ (2079.56-MHz 686-class CPU)
  Origin = "AuthenticAMD"  Id = 0x6a0  Stepping = 0
 
Features=0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
  AMD Features=0xc0400800<SYSCALL,MMX+,3DNow+,3DNow>
real memory  = 536805376 (511 MB)
avail memory = 515940352 (492 MB)
ioapic0 <Version 1.1> irqs 0-23 on motherboard
bktr_mem: memory holder loaded
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <Nvidia AWRDACPI> on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1008-0x100b on acpi0
cpu0: <ACPI CPU> on acpi0
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff,0xcf0-0xcf3 on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <NVIDIA nForce2 AGP Controller> mem 0xe0000000-0xe3ffffff at device
0.0 on pci0
pci0: <memory, RAM> at device 0.1 (no driver attached)
pci0: <memory, RAM> at device 0.2 (no driver attached)
pci0: <memory, RAM> at device 0.3 (no driver attached)
pci0: <memory, RAM> at device 0.4 (no driver attached)
pci0: <memory, RAM> at device 0.5 (no driver attached)
isab0: <PCI-ISA bridge> at device 1.0 on pci0
isa0: <ISA bus> on isab0
pci0: <serial bus, SMBus> at device 1.1 (no driver attached)
ohci0: <OHCI (generic) USB controller> mem 0xec003000-0xec003fff irq 20 at
device 2.0 on pci0
ohci0: [GIANT-LOCKED]
usb0: OHCI version 1.0, legacy support
usb0: <OHCI (generic) USB controller> on ohci0
usb0: USB revision 1.0
uhub0: nVidia OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 3 ports with 3 removable, self powered
ohci1: <OHCI (generic) USB controller> mem 0xec004000-0xec004fff irq 21 at
device 2.1 on pci0
ohci1: [GIANT-LOCKED]
usb1: OHCI version 1.0, legacy support
usb1: <OHCI (generic) USB controller> on ohci1
usb1: USB revision 1.0
uhub1: nVidia OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 3 ports with 3 removable, self powered
ehci0: <NVIDIA nForce2 USB 2.0 controller> mem 0xec005000-0xec0050ff irq
22 at device 2.2 on pci0
ehci0: [GIANT-LOCKED]
usb2: EHCI version 1.0
usb2: companion controllers, 4 ports each: usb0 usb1
usb2: <NVIDIA nForce2 USB 2.0 controller> on ehci0
usb2: USB revision 2.0
uhub2: nVidia EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub2: 6 ports with 6 removable, self powered
pci0: <multimedia, audio> at device 6.0 (no driver attached)
pcib1: <ACPI PCI-PCI bridge> at device 8.0 on pci0
pci1: <ACPI PCI bus> on pcib1
re0: <RealTek 8169S Single-chip Gigabit Ethernet> port 0x9000-0x90ff mem
0xeb006000-0xeb0060ff irq 16 at device 11.0 on pci1
miibus0: <MII bus> on re0
rgephy0: <RTL8169S/8110S media interface> on miibus0
rgephy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX,
1000baseTX-FDX, auto
re0: Ethernet address: 00:0d:61:78:cf:2f
atapci0: <ITE IT8212F UDMA133 controller> port
0x9410-0x9417,0x9800-0x9803,0x9c10-0x9c17,0xa000-0xa003,0xa400-0xa40f irq 17 at
device 12.0 on pci1
ata2: <ATA channel 0> on atapci0
ata3: <ATA channel 1> on atapci0
pci1: <serial bus, FireWire> at device 14.0 (no driver attached)
atapci1: <nVidia nForce2 UDMA133 controller> port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xf000-0xf00f at device 9.0 on pci0
ata0: <ATA channel 0> on atapci1
ata1: <ATA channel 1> on atapci1
pcib2: <ACPI PCI-PCI bridge> at device 30.0 on pci0
pci2: <ACPI PCI bus> on pcib2
drm0: <ATI Rage 128 Pro PF (AGP)> port 0xc000-0xc0ff mem
0xe4000000-0xe7ffffff,0xe9000000-0xe9003fff irq 19 at device 0.0 on pci2
info: [drm] AGP at 0xe0000000 64MB
info: [drm] Initialized r128 2.5.0 20030725
speaker0: <PC speaker> port 0x61 on acpi0
fdc0: <floppy drive controller> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on
acpi0
fdc0: [FAST]
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on
acpi0
sio0: type 16550A
sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
ppc0: <Standard parallel printer port> port 0x378-0x37f irq 7 on acpi0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
ppbus0: <Parallel port bus> on ppc0
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model MouseMan+, device ID 0
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem 0xc0000-0xcbfff,0xcc000-0xcd7ff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounter "TSC" frequency 2079563677 Hz quality 800
Timecounters tick every 1.000 msec
ad0: 38166MB <Seagate ST340823A 3.32> at ata0-master UDMA100
acd0: DVDROM <TOSHIBA DVD-ROM SD-M1612/1004> at ata0-slave UDMA33
acd1: DVDR <HL-DT-ST DVDRAM GSA-4081B/A100> at ata1-slave UDMA33
ad4: 152627MB <Seagate ST3160021A 8.01> at ata2-master UDMA100
ad5: 152627MB <Seagate ST3160021A 8.01> at ata2-slave UDMA100
ad6: 152627MB <Seagate ST3160021A 8.01> at ata3-master UDMA100
cd1 at ata1 bus 0 target 1 lun 0
cd1: <HL-DT-ST DVDRAM GSA-4081B A100> Removable CD-ROM SCSI-0 device 
cd1: 33.000MB/s transfers
cd1: cd present [1 x 2048 byte records]
cd0 at ata0 bus 0 target 1 lun 0
cd0: <TOSHIBA DVD-ROM SD-M1612 1004> Removable CD-ROM SCSI-0 device 
cd0: 33.000MB/s transfers
cd0: Attempt to query device size failed: NOT READY, Medium not present
GEOM_RAID3: Device datos created (id=3217021940).
GEOM_RAID3: Device datos: provider ad4s2 detected.
GEOM_RAID3: Device datos: provider ad5s2 detected.
GEOM_RAID3: Device datos: provider ad6s2 detected.
GEOM_RAID3: Component ad6s2 (device datos) broken, skipping.
GEOM_RAID3: Component ad4s2 (device datos) broken, skipping.
GEOM_RAID3: Device datos is broken, too few valid components.
GEOM_RAID3: Device datos destroyed.
GEOM_MIRROR: Device home created (id=1272328468).
GEOM_MIRROR: Device home: provider ad0s4d detected.
GEOM_MIRROR: Device local created (id=3856788567).
GEOM_MIRROR: Device local: provider ad0s4e detected.
Root mount waiting for: GMIRROR GMIRROR
Root mount waiting for: GMIRROR GMIRROR
Root mount waiting for: GMIRROR GMIRROR
Root mount waiting for: GMIRROR GMIRROR
GEOM_MIRROR: Force device home start due to timeout.
GEOM_MIRROR: Device home: provider ad0s4d activated.
GEOM_MIRROR: Device home: provider mirror/home launched.
WARNING: Expected rawoffset 0, found 13446405
Root mount waiting for: GMIRROR
GEOM_MIRROR: Force device local start due to timeout.
GEOM_MIRROR: Device local: provider ad0s4e activated.
GEOM_MIRROR: Device local: provider mirror/local launched.
Trying to mount root from ufs:/dev/ad0s2a

-- 
-----BEGIN GEEK CODE BLOCK-----
Version: 3.1
GCS/IT d- s+:+() a32 C+++ UBL+++$ P+ L+++ E--- W++ N+ o++ K- w---
O+ M+ V- PS+ PE+ Y++ PGP+>+++ t+ 5 X+$ R- tv-- b+++ DI D++>+++
G++ e- h+(++) !r !z
------END GEEK CODE BLOCK------

On Wed, Apr 05, 2006 at 04:58:51PM +0200, Jos? M. Fandi?o wrote:
+> Hello list,
+> 
+>  Last night one disk of my desktop machine dead causing a hard lock of the
+> computer. It was a component of a mirror volume so it wasn't as
serious as
+> it initially looked. 
+> 
+>  Unfortunately, the metadata structure of my data partition (a geom raid3 
+> array with tree components	) seems to be corrupted by this hard lock, 
+> the following message is scrolled constantly on the screen:
+> 
+> GEOM_RAID3: Device datos created (id=3217021940).
+> GEOM_RAID3: Device datos: provider ad6s2 detected.
+> GEOM_RAID3: Device datos: provider ad5s2 detected.
+> GEOM_RAID3: Device datos: provider ad4s2 detected.
+> GEOM_RAID3: Component ad6s2 (device datos) broken, skipping.
+> GEOM_RAID3: Component ad4s2 (device datos) broken, skipping.
+> GEOM_RAID3: Device datos is broken, too few valid components.
+> GEOM_RAID3: Device datos destroyed.
+> 
+> Checking the search engine results it isn't a very usual problem, the
advice
+> in the returned hits is rerunning "graid label -h datos ad4s2 ad5s2
ad6s2",
+> but before of erasing all my data I would like to ask to list members. 
+> 
+> How dangerous is running the mentioned command in this context?

You should be safe as long as the order of slices you give here is the
same as it was when device was initially labeled.
Of course (as I understand) one of those broken components was really
broken, right? If yes, you should 'graid3 rebuild' it immediatelly after
'label' command. If no, you should still rebuild one of them after
labeling it.

-- 
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd@FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!
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