On Monday 23 January 2012, Matt Behrens wrote:
> Been playing with 5.1-beta (Jan. 21 build) in the interests of seeing
> what I need to get together to set up my next system. I was hoping to
> do it with three drives, booting from a softraid RAID 5 volume.
>From bioctl(8):
CAVEATS
Use of the CRYPTO & RAID 4/5 disciplines are currently considered
experimental.
(I probably should remove CRYPTO from that list though, since it is now pretty
stable :)
> When installed and rebooted, all works OK. What I've been running into
> are panics when trying to run the softraid volume in degraded mode,
> i.e. if I disconnect a drive and start the system.
>
> I've seen similar issues with a RAID 5 volume mounted on just /home
> instead of on /. RAID 1 appears to work fine, though.
>
> Here's one example. Though the panic traces vary, they're all very easy
> to reproduce--just set up a three-drive RAID 5 array, then bring up the
> system with one drive missing.
That particular trace suggests that your file system is hosed. However, RAID 5
is not ready for prime-time yet - as far as I know it will work correctly
until you lose a disk, at which point it will support read-only access (e.g.
you should be able to keep your data), however any attempts to write will
result in a panic. Also, there is no support for scrubbing or rebuilding,
which makes it non-ideal for production.
> >> OpenBSD/i386 BOOT 3.17
>
> boot>
> booting hd0a:/bsd: 8230716+1088904 [61+369072+354699]=0x9941dc
> entry point at 0x200120
>
> [ using 724248 bytes of bsd ELF symbol table ]
> Copyright (c) 1982, 1986, 1989, 1991, 1993
> The Regents of the University of California. All rights reserved.
> Copyright (c) 1995-2012 OpenBSD. All rights reserved.
> http://www.OpenBSD.org
>
> OpenBSD 5.1-beta (GENERIC) #140: Sat Jan 21 00:40:23 MST 2012
> dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC
> cpu0: Intel(R) Pentium(R) 4 CPU 2.80GHz ("GenuineIntel" 686-class) 2.79 GHz
> cpu0:
> FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CF
> LUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,CNXT-ID
> real mem = 1341124608 (1278MB)
> avail mem = 1309093888 (1248MB)
> mainbus0 at root
> bios0 at mainbus0: AT/286+ BIOS, date 10/22/02, BIOS32 rev. 0 @ 0xffe90,
> SMBIOS rev. 2.3 @ 0xf0450 (90 entries)
> bios0: vendor Dell Computer Corporation version "A01" date 10/22/2002
> bios0: Dell Computer Corporation Precision WorkStation 350
> acpi0 at bios0: rev 0
> acpi0: sleep states S0 S1 S3 S4 S5
> acpi0: tables DSDT FACP SSDT APIC BOOT ASF!
> acpi0: wakeup devices VBTN(S4) PCI0(S5) PCI1(S5) USB0(S3) USB1(S3) USB2(S3)
> USB3 (S3) KBD_(S3)
> acpitimer0 at acpi0: 3579545 Hz, 24 bits
> acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
> cpu0 at mainbus0: apid 0 (boot processor)
> cpu0: apic clock running at 132MHz
> ioapic0 at mainbus0: apid 1 pa 0xfec00000, version 20, 24 pins
> ioapic0: misconfigured as apic 0, remapped to apid 1
> acpiprt0 at acpi0: bus 0 (PCI0)
> acpiprt1 at acpi0: bus 2 (PCI1)
> acpicpu0 at acpi0
> acpibtn0 at acpi0: VBTN
> bios0: ROM list: 0xc0000/0xa800 0xca800/0x1800
> pci0 at mainbus0 bus 0: configuration mode 1 (bios)
> pchb0 at pci0 dev 0 function 0 "Intel 82850 Host" rev 0x04
> intelagp0 at pchb0
> agp0 at intelagp0: aperture at 0xf0000000, size 0x8000000
> ppb0 at pci0 dev 1 function 0 "Intel 82850/82860 AGP" rev 0x04
> pci1 at ppb0 bus 1
> vga1 at pci1 dev 0 function 0 "NVIDIA Vanta" rev 0x15
> wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
> wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
> ppb1 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0x04
> pci2 at ppb1 bus 2
> uhci0 at pci2 dev 1 function 0 "VIA VT83C572 USB" rev 0x50: apic 1 int 19
> uhci1 at pci2 dev 1 function 1 "VIA VT83C572 USB" rev 0x50: apic 1 int 18
> ehci0 at pci2 dev 1 function 2 "VIA VT6202 USB" rev 0x51: apic 1 int 16
> usb0 at ehci0: USB revision 2.0
> uhub0 at usb0 "VIA EHCI root hub" rev 2.00/1.00 addr 1
> uhci2 at pci2 dev 2 function 0 "VIA VT83C572 USB" rev 0x50: apic 1 int 18
> uhci3 at pci2 dev 2 function 1 "VIA VT83C572 USB" rev 0x50: apic 1 int 17
> ehci1 at pci2 dev 2 function 2 "VIA VT6202 USB" rev 0x51: apic 1 int 19
> usb1 at ehci1: USB revision 2.0
> uhub1 at usb1 "VIA EHCI root hub" rev 2.00/1.00 addr 1
> dc0 at pci2 dev 9 function 0 "ADMtek AN983" rev 0x11: apic 1 int 18,
> address 00:06:25:08:1c:04 ukphy0 at dc0 phy 1: Generic IEEE 802.3u media
> interface, rev. 1: OUI 0x000749, model 0x0001 dc1 at pci2 dev 10 function 0
> "ADMtek AN983" rev 0x11: apic 1 int 19, address 00:04:5a:7e:34:56 ukphy1 at
> dc1 phy 1: Generic IEEE 802.3u media interface, rev. 1: OUI 0x000749, model
> 0x0001 em0 at pci2 dev 12 function 0 "Intel PRO/1000MT (82540EM)" rev 0x02:
> apic 1 int 18, address 00:07:e9:85:5d:be usb2 at uhci0: USB revision 1.0
> uhub2 at usb2 "VIA UHCI root hub" rev 1.00/1.00 addr 1
> usb3 at uhci1: USB revision 1.0
> uhub3 at usb3 "VIA UHCI root hub" rev 1.00/1.00 addr 1usb4 at uhci2: USB
> revision 1.0 uhub4 at usb4 "VIA UHCI root hub" rev 1.00/1.00 addr 1
> usb5 at uhci3: USB revision 1.0
> uhub5 at usb5 "VIA UHCI root hub" rev 1.00/1.00 addr 1
> ichpcib0 at pci0 dev 31 function 0 "Intel 82801BA LPC" rev 0x04
> pciide0 at pci0 dev 31 function 1 "Intel 82801BA IDE" rev 0x04: DMA,
> channel 0 wired to compatibility, channel 1 wired to compatibility wd0 at
> pciide0 channel 0 drive 0: <WDC WD400BB-75DEA0>
> wd0: 16-sector PIO, LBA, 38146MB, 78125000 sectors
> wd1 at pciide0 channel 0 drive 1: <IC35L060AVER07-0>
> wd1: 16-sector PIO, LBA, 58644MB, 120103200 sectors
> wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5
> wd1(pciide0:0:1): using PIO mode 4, Ultra-DMA mode 5
> pciide0: channel 1 ignored (disabled)
> ichiic0 at pci0 dev 31 function 3 "Intel 82801BA SMBus" rev 0x04: apic 1
> int 17 iic0 at ichiic0
> iic0: addr 0x2d 1e=00 1f=00 20=c0 21=7c 22=c3 23=c3 24=be 25=bf 26=1e 27=23
> 2b=cd 2c=b3 2d=8a 2e=61 2f=cd 30=b3 31=cd 32=b3 33=d8 34=a8 35=cd 36=b3
> 37=7f 38=80 39=7f 3a=80 3e=55 3f=20 40=09 41=00 42=00 47=60 49=80 4a=00
> 4b=12 4c=00 4d=00 4f=48 50=c4 51=c2 52=28 54=cd 55=b3 56=cd 57=b3 58=5f
> 59=80 5a=00 5b=00 words 00=ffff 01=ffff 02=ffff 03=ffff 04=ffff 05=ffff
> 06=ffff 07=ffff auich0 at pci0 dev 31 function 5 "Intel 82801BA AC97" rev
> 0x04: apic 1 int 17, ICH2 AC97 ac97: codec id 0x41445372 (Analog Devices
> AD1981A)
> ac97: codec features headphone, 20 bit DAC, No 3D Stereo
> audio0 at auich0
> isa0 at ichpcib0
> isadma0 at isa0
> com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
> com0: console
> com1 at isa0 port 0x2f8/8 irq 3: 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
> pcppi0 at isa0 port 0x61
> spkr0 at pcppi0
> lpt0 at isa0 port 0x378/4 irq 7
> npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
> fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
> fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
> mtrr: Pentium Pro MTRR support
> vscsi0 at root
> scsibus0 at vscsi0: 256 targets
> softraid0 at root
> scsibus1 at softraid0: 256 targets
> softraid0: not all chunks were provided; attempting to bring volume 0
> online softraid0: trying to bring up sd0 degraded
> sd0 at scsibus1 targ 1 lun 0: <OPENBSD, SR RAID 5, 005> SCSI2 0/direct
> fixed sd0: 58392MB, 512 bytes/sector, 119586816 sectors
> softraid0: roaming device wd2d -> wd1d
> root on sd0a (4c0f335c11b2f718.a) swap on sd0b dump on sd0b
> Disk 1 offline, regenerating buffer
> Disk 1 offline, regenerating buffer
> Disk 1 offline, regenerating buffer
> Disk 1 offline, regenerating buffer
> First bad
> /: bad dir ino 2 at offset 0: mangled entry
> panic: bad dir
> Stopped at Debugger+0x4: popl %ebp
> RUN AT LEAST 'trace' AND 'ps' AND INCLUDE OUTPUT WHEN REPORTING THIS PANIC!
> DO NOT EVEN BOTHER REPORTING THIS WITHOUT INCLUDING THAT INFORMATION!
> ddb> trace
> Debugger(d08d6478,dcac9d08,d08cb68e,dcac9d08,d09bcd14) at Debugger+0x4
> panic(d08cb68e,d24294b8,2,0,d08cb6d9) at panic+0x5d
> ufs_dirbad(d75a9000,0,d08cb6d9,0,dcac9db8) at ufs_dirbad+0x53
> ufs_lookup(dcac9de0,0,0,d75b0d68,dcac9ed8) at ufs_lookup+0x851
> VOP_LOOKUP(d75b0d68,dcac9ed8,dcac9eec,dcac9ed8,20) at VOP_LOOKUP+0x2f
> vfs_lookup(dcac9ec4,d75a6000,400,dcac9ee0,d0ae09b4) at vfs_lookup+0x27b
> namei(dcac9ec4,0,dcac9edc,d03e5057,d08b2a9d) at namei+0x221
> check_console(d75b6000,20,d08b2aaa,0,0) at check_console+0x3a
> start_init(d75b6000) at start_init+0x58
> Bad frame pointer: 0xd0b96ea8
> ddb> ps
> PID PPID PGRP UID S FLAGS WAIT COMMAND
> 15 0 0 0 3 0x100200 aiodoned aiodoned
> 14 0 0 0 3 0x100200 syncer update
> 13 0 0 0 3 0x100200 cleaner cleaner
> 12 0 0 0 3 0x100200 reaper reaper
> 11 0 0 0 3 0x100200 pgdaemon pagedaemon
> 10 0 0 0 3 0x100200 bored srdis
> 9 0 0 0 3 0x100200 bored crypto
> 8 0 0 0 3 0x100200 pftm pfpurge
> 7 0 0 0 3 0x100200 usbtsk usbtask
> 6 0 0 0 3 0x100200 usbatsk usbatsk
> 5 0 0 0 3 0x100200 acpi0 acpi0
> 4 0 0 0 3 0x100200 bored syswq
> 3 0 0 0 3 0x40100200 idle0
> 2 0 0 0 3 0x100200 kmalloc kmthread
> * 1 0 0 0 7 0 swapper
> 0 -1 0 0 3 0x200 scheduler swapper
--
"Reason is not automatic. Those who deny it cannot be conquered by it.
Do not count on them. Leave them alone." -- Ayn Rand
