Re: port-i386/41706: disk subsystem unresponsive after (recovered) disk failure

To: port-i386-maintainer%netbsd.org@localhost,gnats-admin%netbsd.org@localhost,netbsd-bugs%netbsd.org@localhost,bad%bsd.de@localhost
Subject: Re: port-i386/41706: disk subsystem unresponsive after (recovered) disk failure
From: Christoph Badura <bad%bsd.de@localhost>
Date: Sat, 18 Jul 2009 17:10:05 +0000 (UTC)
The following reply was made to PR port-i386/41706; it has been noted by GNATS.

From: Christoph Badura <bad%bsd.de@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: port-i386/41706: disk subsystem unresponsive after (recovered) 
disk failure
Date: Sat, 18 Jul 2009 18:37:11 +0200

 I was "lucky" and the replacement disk for the previous one failed too
 causing the system to "lock up" with the exact same symptoms.
 
 This is what I find on the console:
 
 Pending list:
   3 SCB_CONTROL[0x60]
 SCB_SCSIID[0x17] SCB_LUN[0x0]
 Kernel Free SCB list: ... (everything but 3)
 
 <<< Dump Card State Ends >>>
 sg[0] - Addr 0x7c854ba0 : Length 512
 ahc0:Queuing a BDR SCB
 ahc0:Bus Device Reset Message Sent
 sd1(ahc0:0:1:0): ahc0: no loner in timeout, status = 0
 ahc0: Bus Device Reset on A:1. 1 SCBs aborted
 
 *hang*
 
 I've transcribed the following from DDB:
 
 db> dmesg
 ...
 wsdisplay0: screen 4 added (80x25, vt100 emulation)
 sd1(ahc0:0:1:0):  Check Condition on CDB: 0x2a 00 00 29 56 3f 00 00 10 00
     SENSE KEY:  Hardware Error
    INFO FIELD:  2709055
      ASC/ASCQ:  No Seek Complete
          SKSV:  Actual Retry Count: 1
 
 raid0: IO Error.  Marking /dev/sd1a as failed.
 ahc0:SCB 0x3 - timed out
 >>> Dump Card State Begins <<<
 ahc0: Dumping Card State while idle, at SEQADDR 0x9
 Card was paused
 ACCUM = 0x0, SINDEX = 0x9, DINDEX = 0xe4, ARG_2 = 0x0
 HCNT = 0x0 SCBPTR = 0x11
 SCSIPHASE[0x0] SCSISIGI[0x0] ERROR[0x0] SCSIBUSL[0x0]
 LASTPHASE[0x1] SCSISEQ[0x12] SBLKCTL[0xa] SCSIRATE[0x0]
 SEQCTL[0x10] SEQ_FLAGS[0xc0] SSTAT0[0x0] SSTAT1[0x8]
 SSTAT2[0x0] SSTAT3[0x0] SIMODE0[0x8] SIMODE1[0xa4]
 SXFRCTL0[0x80] DFCNTRL[0x0] DFSTATUS[0x89]
 STACK: 0x0 0x16b 0x111 0x3
 SCB count = 32
 Kernel NEXTQSCB = 5
 Card NEXTQSCB = 5
 QINFIFO entries:
 Waiting Queue entries:
 Disconnected Queue entries: 1:3
 QOUTFIFO entries:
 Sequencer Free SCB List: 17 11 8 5 2 22 6 16 12 21 10 15 20 7 19 9 14 4 18 13 
3 0
  23 24 25 26 27 28 29 30 31
 Sequencer SCB Info:
   0 SCB_CONTROL[0xe0]
 SCB_SCSIID[0x17] SCB_LUN[0x0] SCB_TAG[0xff]
   1 SCB_CONTROL[0x64]
 SCB_SCSIID[0x17] SCB_LUN[0x0] SCB_TAG[0x3]
   2 SCB_CONTROL[0xe0]
 SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0xff]
 ...
  15 SCB_CONTROL[0xe0]
 SCB_SCSIID[0x17] SCB_LUN[0x0] SCB_TAG[0xff]
  16 SCB_CONTROL[0xe0]
 SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0xff]
 ...
  23 SCB_CONTROL[0x0]
 SCB_SCSIID[0xff] SCB_LUN[0x0] SCB_TAG[0xff]
 ...
  31 SCB_CONTROL[0x0]
 SCB_SCSIID[0xff] SCB_LUN[0x0] SCB_TAG[0xff]
 Pending list:
   3 SCB_CONTROL[0x60]
 SCB_SCSIID[0x17] SCB_LUN[0x0]
 Kernel Free SCB list: 9 6 11 23 29 28 27 7 13 2 1 8 30 15 12 4 26 0 31 24 14 
25 1
 0 22 21 20 19 18 17 16
 
 <<< Dump Card State Ends >>>
 sg[0] - Addr 0x7c854ba0 : Length 512
 ahc0:Queuing a BDR SCB
 ahc0:Bus Device Reset Message Sent
 sd1(ahc0:0:1:0): ahc0: no loner in timeout, status = 0
 ahc0: Bus Device Reset on A:1. 1 SCBs aborted
 
 db> ps/nw
 lots of cron hanging in tstile
 some in flt_noram5
 167 syslogd in biolock
 9291 postdrop in biowait
 
 db> tr/a cd7fba40 (cron)
 sleepq_block()
 turnstile_block()
 rw_vector_enter()
 vlockmgr()
 ffs_lock()
 VOP_LOCK()
 vn_lock()
 vget()
 ufs_ihashget()
 ffs_vget()
 ufs_root()
 lookup()
 namei()
 unp_connect()
 uipc_usrreq()
 soconnect()
 do_sys_connect()
 sys_connect()
 syscall()
 
 db> tr/a cd7ea020 (cron)
 [same]
 
 db> tr/a cd75d000 (cron)
 [same]
 
 db> tr/a cd445500 (cron)
 [same]
 
 db> tr/a cc2dad00 (postdrop)
 sleepq_block()
 cv_wait()
 bio_wait()
 genfs_do_io()
 genfs_gop_write()
 genfs_do_putpages()
 genfs_putpages()
 VOP_PUTPAGES()
 ffs_full_fsync()
 ffs_fsync()
 VOP_FSYNC()
 sys_fsync()
 syscall()
 
 db> tr/a cd1f6ae0 (sshd)
 sleepq_block()
 turnstile_block()
 rw_vector_enter()
 vlockmgr()
 ...
 ufs_root()
 lookup()
 namei()
 do_sys_stat()
 sys___stat30()
 syscall()
 
 db> tr/a cd1f6d60 (sshd)
 [same]
 
 db> tr/a cd1e40c0 (sshd)
 [same]
 
 db> tr/a cc2dad00 (postdrop, biowait)
 sleepq_block()
 cv_wait()
 biowait()
 genfs_do_io()
 genfs_gop_write()
 genfs_do_putpages()
 genfs_putpages()
 VOP_PUTPAGES
 ffs_full_fsync()
 ffs_fsync()
 VOP_FSYNC()
 sys_fsync()
 syscall()
 
 db> tr/a cbe09340 (syslogd, biolock)
 sleepq_block()
 cv_timedwait()
 bbusy()
 getblk()
 bio_doread()
 bread()
 ffs_realloccg()
 ffs_balloc_ufs1()
 ffs_balloc()
 ufs_gop_alloc()
 ufs_balloc_range()
 ffs_write()
 VOP_WRITE()
 vn_write()
 do_filewritev()
 sys_writev()
 syscall()
 
 Full dmesg output from the system:
 
 Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
     2006, 2007, 2008
     The NetBSD Foundation, Inc.  All rights reserved.
 Copyright (c) 1982, 1986, 1989, 1991, 1993
     The Regents of the University of California.  All rights reserved.
 
 NetBSD 5.0_STABLE (pe1400-dom0) #0: Sun Jul 12 16:44:17 UTC 2009
        bad@arbitrary:/m/src/sys/arch/i386/compile/pe1400-dom0
 total memory = 128 MB
 avail memory = 114 MB
 timecounter: Timecounters tick every 10.000 msec
 mainbus0 (root)
 mainbus0: scanning 0x9e800 to 0x9ebf0 for MP signature
 mainbus0: scanning 0x9e400 to 0x9e7f0 for MP signature
 mainbus0: scanning 0xf0000 to 0xffff0 for MP signature
 mainbus0: MP floating pointer found in bios at 0xfe710
 mainbus0: MP config table at 0xf0000, 432 bytes long
 cpu0 at mainbus0 apid 0: (boot processor)
 ioapic0 at mainbus0 apid 1: pa 0xfec00000, virtual wire mode, version 11, 16 
pins
 ioapic1 at mainbus0 apid 2: pa 0xfec01000, virtual wire mode, version 11, 16 
pins
 hypervisor0 at mainbus0: Xen version 3.1
 vcpu0 at hypervisor0: Intel 686-class, 860MHz, id 0x686
 debug virtual interrupt using event channel 1
 xenbus0 at hypervisor0: Xen Virtual Bus Interface
 xencons0 at hypervisor0: Xen Virtual Console Driver
 npx0 at hypervisor0: using exception 16
 acpi0 at hypervisor0: Intel ACPICA 20080321
 acpi0: X/RSDT: OemId <DELL  ,PE1400  ,00000002>, AslId <MSFT,0100000a>
 mpacpi: found root PCI bus 0 at level 1
 mpacpi: found root PCI bus 1 at level 1
 mpacpi: 2 PCI busses
 mpacpi: configuring PCI bus 0 int routing
 LUSB: ACPI: Found matching pin for 0.15.INTA at func 2: 10
 mpacpi: configuring PCI bus 1 int routing
 ioapic0: pin 0 attached to isa0 irq 0 (type 0<type=0> flags 0<pol=0,trig=0>)
 ioapic0: pin 1 attached to isa0 irq 1 (type 0<type=0> flags 0<pol=0,trig=0>)
 ioapic0: pin 3 attached to isa0 irq 3 (type 0<type=0> flags 0<pol=0,trig=0>)
 ioapic0: pin 4 attached to isa0 irq 4 (type 0<type=0> flags 0<pol=0,trig=0>)
 ioapic0: pin 5 attached to isa0 irq 5 (type 0<type=0> flags 0<pol=0,trig=0>)
 ioapic0: pin 6 attached to isa0 irq 6 (type 0<type=0> flags 0<pol=0,trig=0>)
 ioapic0: pin 7 attached to isa0 irq 7 (type 0<type=0> flags 0<pol=0,trig=0>)
 ioapic0: pin 8 attached to isa0 irq 8 (type 0<type=0> flags 0<pol=0,trig=0>)
 ioapic0: pin 9 attached to isa0 irq 9 (type 0<type=0> flags 0<pol=0,trig=0>)
 ioapic0: pin 10 attached to isa0 irq 10 (type 0<type=0> flags 0<pol=0,trig=0>)
 ioapic0: pin 11 attached to isa0 irq 11 (type 0<type=0> flags 0<pol=0,trig=0>)
 ioapic0: pin 12 attached to isa0 irq 12 (type 0<type=0> flags 0<pol=0,trig=0>)
 ioapic0: pin 13 attached to isa0 irq 13 (type 0<type=0> flags 0<pol=0,trig=0>)
 ioapic0: pin 14 attached to isa0 irq 14 (type 0<type=0> flags 0<pol=0,trig=0>)
 ioapic0: pin 15 attached to isa0 irq 15 (type 0<type=0> flags 0<pol=0,trig=0>)
 local apic: pin 1 attached to NMI (type 1<type=1=NMI> flags 0<pol=0,trig=0>)
 local apic: pin 1 attached to NMI (type 1<type=1=NMI> flags 0<pol=0,trig=0>)
 linkdev LUSB attached to pci0 device 15 INT_A (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 9 attached to pci0 device 4 INT_A (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 10 attached to pci0 device 4 INT_B (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 11 attached to pci0 device 4 INT_C (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 12 attached to pci0 device 4 INT_D (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 12 attached to pci0 device 6 INT_A (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 11 attached to pci0 device 6 INT_B (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 10 attached to pci0 device 6 INT_C (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 9 attached to pci0 device 6 INT_D (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 0 attached to pci0 device 2 INT_A (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 14 attached to pci1 device 2 INT_A (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 15 attached to pci1 device 2 INT_B (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 1 attached to pci1 device 4 INT_A (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 2 attached to pci1 device 4 INT_B (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 3 attached to pci1 device 4 INT_C (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 4 attached to pci1 device 4 INT_D (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 4 attached to pci1 device 6 INT_A (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 3 attached to pci1 device 6 INT_B (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 2 attached to pci1 device 6 INT_C (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 1 attached to pci1 device 6 INT_D (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 5 attached to pci1 device 8 INT_A (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 6 attached to pci1 device 8 INT_B (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 7 attached to pci1 device 8 INT_C (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 8 attached to pci1 device 8 INT_D (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 8 attached to pci1 device 10 INT_A (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 7 attached to pci1 device 10 INT_B (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 6 attached to pci1 device 10 INT_C (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic1: pin 5 attached to pci1 device 10 INT_D (type 0<type=0> flags 
f<pol=3=Act Lo,trig=3=Level>)
 ioapic0: int9 1a9a8<vector=a8,delmode=1,logical,actlo,level,masked,dest=0> 
1000000<target=1>
 acpi0: SCI interrupting at int 9
 acpi0: fixed-feature power button present
 timecounter: Timecounter "ACPI-Safe" frequency 3579545 Hz quality 900
 ACPI-Safe 32-bit timer
 FPU (PNP0C04) [Math Coprocessor] at acpi0 not configured
 SPK (PNP0800) [AT-style speaker sound] at acpi0 not configured
 TMR (PNP0100) [AT Timer] at acpi0 not configured
 FDC (PNP0700) [PC standard floppy disk controller] at acpi0 not configured
 KBD (PNP0303) [IBM Enhanced (101/102-key, PS/2 mouse support)] at acpi0 not 
configured
 MOU (PNP0F13) [PS/2 Port for PS/2-style Mice] at acpi0 not configured
 COMA (PNP0501) [16550A-compatible COM port] at acpi0 not configured
 COMB (PNP0501) [16550A-compatible COM port] at acpi0 not configured
 PRT (PNP0401) [ECP printer port] at acpi0 not configured
 pci0 at hypervisor0 bus 0: configuration mode 1
 hypervisor0: added to list as bus 0
 pci0: i/o space, memory space enabled
 pchb0 at pci0 dev 0 function 0
 pchb0: ServerWorks CNB20-HE PCI/AGP bridge (rev. 0x06)
 pchb1 at pci0 dev 0 function 1
 pchb1: ServerWorks CNB20-HE PCI/AGP bridge (rev. 0x06)
 pci1 at pchb1 bus 1
 pchb1: added to list as bus 1
 pci1: i/o space, memory space enabled
 ahc0 at pci1 dev 2 function 0: Adaptec aic7899 Ultra160 SCSI adapter
 ioapic1: int14 1a9b0<vector=b0,delmode=1,logical,actlo,level,masked,dest=0> 
1000000<target=1>
 ahc0: interrupting at ioapic1 pin 14, event channel 3
 ahc0: aic7899: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
 scsibus0 at ahc0: 16 targets, 8 luns per target
 ahc1 at pci1 dev 2 function 1: Adaptec aic7899 Ultra160 SCSI adapter
 ioapic1: int15 1a9b8<vector=b8,delmode=1,logical,actlo,level,masked,dest=0> 
1000000<target=1>
 ahc1: interrupting at ioapic1 pin 15, event channel 4
 ahc1: aic7899: Ultra160 Wide Channel B, SCSI Id=7, 32/253 SCBs
 scsibus1 at ahc1: 16 targets, 8 luns per target
 fxp0 at pci0 dev 2 function 0: i82559 Ethernet, rev 8
 ioapic1: int0 1a9c0<vector=c0,delmode=1,logical,actlo,level,masked,dest=0> 
1000000<target=1>
 fxp0: interrupting at ioapic1 pin 0, event channel 5
 fxp0: May need receiver lock-up workaround
 fxp0: Ethernet address 00:b0:d0:aa:f3:3c
 inphy0 at fxp0 phy 1: i82555 10/100 media interface, rev. 4
 inphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
 vga0 at pci0 dev 14 function 0: ATI Technologies Rage XL (rev. 0x27)
 wsdisplay0 at vga0 kbdmux 1: console (80x25, vt100 emulation)
 wsmux1: connecting to wsdisplay0
 wsdisplay0: screen 1-3 added (80x25, vt100 emulation)
 drm at vga0 not configured
 pcib0 at pci0 dev 15 function 0
 pcib0: ServerWorks OSB4 southbridge (rev. 0x50)
 rccide0 at pci0 dev 15 function 1
 rccide0: ServerWorks OSB4 IDE Controller (rev. 0x00)
 rccide0: bus-master DMA support present
 rccide0: primary channel configured to compatibility mode
 ioapic0: int14 9c8<vector=c8,delmode=1,logical,dest=0> 1000000<target=1>
 rccide0: primary channel interrupting at ioapic0 pin 14, event channel 6
 atabus0 at rccide0 channel 0
 rccide0: secondary channel configured to compatibility mode
 ioapic0: int15 9d0<vector=d0,delmode=1,logical,dest=0> 1000000<target=1>
 rccide0: secondary channel interrupting at ioapic0 pin 15, event channel 7
 atabus1 at rccide0 channel 1
 ohci0 at pci0 dev 15 function 2: ServerWorks OSB4/CSB5 USB Host Controller 
(rev. 0x04)
 linkdev LUSB returned ACPI global irq 10, line 10
 ioapic0: int10 1a9d8<vector=d8,delmode=1,logical,actlo,level,masked,dest=0> 
1000000<target=1>
 ohci0: interrupting at ioapic0 pin 10, event channel 8
 ohci0: OHCI version 1.0, legacy support
 usb0 at ohci0: USB revision 1.0
 isa0 at pcib0
 lpt0 at isa0 port 0x378-0x37b irq 7
 ioapic0: int7 921<vector=21,delmode=1,logical,dest=0> 1000000<target=1>
 com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
 ioapic0: int3 929<vector=29,delmode=1,logical,dest=0> 1000000<target=1>
 pckbc0 at isa0 port 0x60-0x64
 pckbd0 at pckbc0 (kbd slot)
 ioapic0: int1 931<vector=31,delmode=1,logical,dest=0> 1000000<target=1>
 pckbc0: using irq 1 for kbd slot
 wskbd0 at pckbd0: console keyboard, using wsdisplay0
 pmsprobe: reset error 5
 Link Device LUSB:
 Index  IRQ  Rtd  Ref  IRQs
     0   10   Y     1  3 4 5 6 7 10 11 12 14 polarity 1 trigger 0
 
 timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
 Xen clock: using event channel 12
 timecounter: Timecounter "xen_system_time" frequency 1000000000 Hz quality 
10000
 xenbus0: using event channel 13
 scsibus0: waiting 2 seconds for devices to settle...
 scsibus1: waiting 2 seconds for devices to settle...
 IPsec: Initialized Security Association Processing.
 uhub0 at usb0: ServerWorks OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
 uhub0: 2 ports with 2 removable, self powered
 sd0 at scsibus0 target 0 lun 0: <HP, 9.10GB C 68-D94N, D94N> disk fixed
 sd0: 8678 MB, 15110 cyl, 3 head, 392 sec, 512 bytes/sect x 17773524 sectors
 sd0: sync (25.00ns offset 63), 16-bit (80.000MB/s) transfers, tagged queueing
 sd1 at scsibus0 target 1 lun 0: <HP, 9.10GB C 68-D94N, D94N> disk fixed
 sd1(ahc0:0:1:0):  Check Condition on CDB: 0x00 00 00 00 00 00
     SENSE KEY:  Not Ready
      ASC/ASCQ:  Logical Unit Not Ready, Cause Not Reportable
 
 sd1: drive offline
 sd1: sync (25.00ns offset 63), 16-bit (80.000MB/s) transfers, tagged queueing
 umass0 at uhub0 port 2 configuration 1 interface 0
 umass0: Pen Drive USB DISK 2.0, rev 2.00/1.00, addr 2
 umass0: using SCSI over Bulk-Only
 scsibus2 at umass0: 2 targets, 1 lun per target
 atapibus0 at atabus0: 2 targets
 cd0 at atapibus0 drive 0: <CRD-8482B, , 1.05> cdrom removable
 cd0: 32-bit data port
 cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
 cd0(rccide0:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33) 
(using DMA)
 sd2 at scsibus1 target 2 lun 0: <SEAGATE, SX150176LC, BA0F> disk fixed
 sd2: 47702 MB, 12024 cyl, 22 head, 369 sec, 512 bytes/sect x 97693755 sectors
 sd2: sync (50.00ns offset 15), 16-bit (40.000MB/s) transfers, tagged queueing
 sd3 at scsibus1 target 3 lun 0: <SEAGATE, SX150176LC, BA11> disk fixed
 sd3: 47702 MB, 12024 cyl, 22 head, 369 sec, 512 bytes/sect x 97693755 sectors
 sd3: sync (50.00ns offset 15), 16-bit (40.000MB/s) transfers, tagged queueing
 sd4 at scsibus2 target 0 lun 0: <, USB DISK 2.0, PMAP> disk removable
 sd4: 240 MB, 962 cyl, 16 head, 32 sec, 512 bytes/sect x 492544 sectors
 raidattach: Asked for 8 units
 Kernelized RAIDframe activated
 Searching for RAID components...
 Component on: sd0a: 17248329
    Row: 0 Column: 0 Num Rows: 1 Num Columns: 2
    Version: 2 Serial Number: 39713 Mod Counter: 108
    Clean: No Status: 0
    sectPerSU: 128 SUsPerPU: 1 SUsPerRU: 1
    RAID Level: 1  blocksize: 512 numBlocks: 17248256
    Autoconfig: Yes
    Contains root partition: Yes
    Last configured as: raid0
 sd1(ahc0:0:1:0):  Check Condition on CDB: 0x00 00 00 00 00 00
     SENSE KEY:  Not Ready
      ASC/ASCQ:  Logical Unit Not Ready, Cause Not Reportable
 
 sd1(ahc0:0:1:0):  Check Condition on CDB: 0x1b 00 00 00 01 00
     SENSE KEY:  Not Ready
      ASC/ASCQ:  Logical Unit Not Ready, Cause Not Reportable
 
 Component on: sd2a: 97693755
    Row: 0 Column: 0 Num Rows: 1 Num Columns: 2
    Version: 2 Serial Number: 76763 Mod Counter: 97
    Clean: No Status: 0
    sectPerSU: 128 SUsPerPU: 1 SUsPerRU: 1
    RAID Level: 1  blocksize: 512 numBlocks: 97693568
    Autoconfig: No
    Contains root partition: No
    Last configured as: raid1
 Component on: sd3a: 97693755
    Row: 0 Column: 1 Num Rows: 1 Num Columns: 2
    Version: 2 Serial Number: 76763 Mod Counter: 97
    Clean: No Status: 0
    sectPerSU: 128 SUsPerPU: 1 SUsPerRU: 1
    RAID Level: 1  blocksize: 512 numBlocks: 97693568
    Autoconfig: No
    Contains root partition: No
    Last configured as: raid1
 Found: sd0a at 0
 RAID autoconfigure
 Configuring raid0:
 Starting autoconfiguration of RAID set...
 Looking for 0 in autoconfig
 Found: sd0a at 0
 Looking for 1 in autoconfig
 raid0: allocating 20 buffers of 65536 bytes.
 raid0: RAID Level 1
 raid0: Components: /dev/sd0a component1[**FAILED**]
 raid0: Total Sectors: 17248256 (8422 MB)
 raid0: configured ok
 Found: sd2a at 0
 Found: sd3a at 1
 boot device: raid0
 root on raid0a dumps on raid0b
 mountroot: trying lfs...
 mountroot: trying ffs...
 root file system type: ffs
 WARNING: clock gained 4 days
 WARNING: CHECK AND RESET THE DATE!
 init: copying out path `/sbin/init' 11
 raid0: Device already configured!
 raid1: Summary of serial numbers:
 76763 2
 raid1: Summary of mod counters:
 97 2
 raid1: Component /dev/sd2a being configured at col: 0
          Column: 0 Num Columns: 2
          Version: 2 Serial Number: 76763 Mod Counter: 97
          Clean: No Status: 0
 /dev/sd2a is not clean!
 raid1: Component /dev/sd3a being configured at col: 1
          Column: 1 Num Columns: 2
          Version: 2 Serial Number: 76763 Mod Counter: 97
          Clean: No Status: 0
 /dev/sd3a is not clean!
 raid1: allocating 20 buffers of 65536 bytes.
 raid1: RAID Level 1
 raid1: Components: /dev/sd2a /dev/sd3a
 raid1: Total Sectors: 97693568 (47701 MB)
 cgd0: error 22
 sd1(ahc0:0:1:0):  Check Condition on CDB: 0x00 00 00 00 00 00
     SENSE KEY:  Not Ready
      ASC/ASCQ:  Logical Unit Not Ready, Cause Not Reportable
 
 sd1(ahc0:0:1:0):  Check Condition on CDB: 0x1b 00 00 00 01 00
     SENSE KEY:  Not Ready
      ASC/ASCQ:  Logical Unit Not Ready, Cause Not Reportable
 
 sd2(ahc1:0:2:0):  Check Condition on CDB: 0x28 00 02 da ff 04 00 00 20 00
     SENSE KEY:  Recovered Error
    INFO FIELD:  47906564
      ASC/ASCQ:  Recovered Data With Error Correction & Retries Applied
      FRU CODE:  0xe4
          SKSV:  Actual Retry Count: 1
 
 tap0: Ethernet address f2:0b:a4:77:b3:0a
 wsdisplay0: screen 4 added (80x25, vt100 emulation)
 raid0: Error re-writing parity!
 
 --chris
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