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Date:	Sun, 11 Feb 2007 15:27:17 +0800
From:	"Marc Marais" <marcm@...uid-nexus.net>
To:	linux-raid@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: md: md6_raid5 crash 2.6.20

Greetings,

I've been running md on my server for some time now and a few days ago one of
the (3) drives in the raid5 array starting giving read errors. The result was
usually system hangs and this was with kernel 2.6.17.13. I upgraded to the
latest production 2.6.20 kernel and experienced the same behaviour. 

I've tried to recondition the drive with dd writes to force reallocation but
there are still read errors (appearing at other addresses) - anyway, the drive
is bad, the point is there is a problem with how it is handled and I was
starting to suspect my hardware, however I got this while trying to backup the
array (which was fully sychronised - eventually) it appears it hit another
read error. 

Note I'm using PATA drives on with a promise IDE controller (using the
sata_promise module).

Please investigate / let me know if you need more info and can help me out
here. Thanks.

Syslog extract:
----------------------------------------------
Feb 11 15:08:59 xerces kernel: ata4: command timeout
Feb 11 15:08:59 xerces kernel: ata4: no sense translation for status: 0x40
Feb 11 15:08:59 xerces kernel: ata4: translated ATA stat/err 0x40/00 to SCSI
SK/ASC/ASCQ 0xb/00/00
Feb 11 15:08:59 xerces kernel: ata4: status=0x40 { DriveReady }
Feb 11 15:08:59 xerces kernel: sd 4:0:0:0: SCSI error: return code = 0x08000002
Feb 11 15:08:59 xerces kernel: sdc: Current [descriptor]: sense key: Aborted
Command
Feb 11 15:08:59 xerces kernel:     Additional sense: No additional sense
information
Feb 11 15:08:59 xerces kernel: Descriptor sense data with sense descriptors
(in hex):
Feb 11 15:08:59 xerces kernel:         72 0b 00 00 00 00 00 0c 00 0a 80 00 00
00 00 00 
Feb 11 15:08:59 xerces kernel:         00 00 00 00 
Feb 11 15:08:59 xerces kernel: end_request: I/O error, dev sdc, sector 54744127
Feb 11 15:08:59 xerces kernel: ------------[ cut here ]------------
Feb 11 15:08:59 xerces kernel: kernel BUG at mm/filemap.c:537!
Feb 11 15:08:59 xerces kernel: invalid opcode: 0000 [#1]
Feb 11 15:08:59 xerces kernel: SMP 
Feb 11 15:08:59 xerces kernel: Modules linked in: aes cbc blkcipher dm_crypt
sg sr_mod vmnet(P) parport_pc parport vmmon(P) st binfmt_misc raid456 xor
sd_mod dm_mod snd_cmipci gameport snd_pcm_oss snd_mixer_oss snd_pcm
snd_page_alloc snd_opl3_lib snd_timer snd_hwdep snd_mpu401_uart snd_rawmidi
snd_seq_device snd soundcore w83781d hwmon_vid i2c_isa i2c_amd756 i2c_core
sata_promise aic7xxx scsi_transport_spi e1000 usbhid ohci_hcd usbcore amd_rng
rng_core video1394 ohci1394 sbp2 raw1394 ieee1394 3c59x mii psmouse ide_cd
cdrom rtc ext3 jbd mbcache ide_disk ide_generic via82cxxx siimage pdc202xx_old
generic cmd64x amd74xx pdc202xx_new ide_core raid1 md_mod unix
Feb 11 15:08:59 xerces kernel: CPU:    1
Feb 11 15:08:59 xerces kernel: EIP:    0060:[unlock_page+14/48]    Tainted: P
     VLI
Feb 11 15:08:59 xerces kernel: EFLAGS: 00010246   (2.6.20 #1)
Feb 11 15:08:59 xerces kernel: EIP is at unlock_page+0xe/0x30
Feb 11 15:08:59 xerces kernel: eax: 00000000   ebx: c10d0000   ecx: c218af20 
 edx: c10d0000
Feb 11 15:08:59 xerces kernel: esi: dfd6db00   edi: 00000001   ebp: dfd6db00 
 esp: f755ff00
Feb 11 15:08:59 xerces kernel: ds: 007b   es: 007b   ss: 0068
Feb 11 15:08:59 xerces kernel: Process md6_raid5 (pid: 1402, ti=f755e000
task=c218f070 task.ti=f755e000)
Feb 11 15:08:59 xerces kernel: Stack: c218af2c c0180d08 0686a800 00000000
f7854334 f8bfd51d 00000002 f755ff44 
Feb 11 15:08:59 xerces kernel:        f755ff48 f7854260 00000000 00000000
0686a800 00000000 03435400 00000000 
Feb 11 15:08:59 xerces kernel:        f7854260 00000002 00000001 00000003
f7854260 f7854334 f7d6c200 f8bfd677 
Feb 11 15:08:59 xerces kernel: Call Trace:
Feb 11 15:08:59 xerces kernel:  [mpage_end_io_read+72/112]
mpage_end_io_read+0x48/0x70
Feb 11 15:08:59 xerces kernel:  [pg0+948458781/1070097408]
retry_aligned_read+0xfd/0x1d0 [raid456]
Feb 11 15:08:59 xerces kernel:  [pg0+948459127/1070097408] raid5d+0x87/0x130
[raid456]
Feb 11 15:08:59 xerces kernel:  [pg0+944523815/1070097408]
md_thread+0x57/0x110 [md_mod]
Feb 11 15:08:59 xerces kernel:  [autoremove_wake_function+0/80]
autoremove_wake_function+0x0/0x50
Feb 11 15:08:59 xerces kernel:  [autoremove_wake_function+0/80]
autoremove_wake_function+0x0/0x50
Feb 11 15:08:59 xerces kernel:  [pg0+944523728/1070097408] md_thread+0x0/0x110
[md_mod]
Feb 11 15:08:59 xerces kernel:  [kthread+154/160] kthread+0x9a/0xa0
Feb 11 15:08:59 xerces kernel:  [kthread+0/160] kthread+0x0/0xa0
Feb 11 15:08:59 xerces kernel:  [kernel_thread_helper+7/20]
kernel_thread_helper+0x7/0x14
Feb 11 15:08:59 xerces kernel:  =======================
Feb 11 15:08:59 xerces kernel: Code: 29 ff ff ff b9 c0 d4 13 c0 8d 54 24 24 c7
04 24 02 00 00 00 e8 a4 15 14 00 eb cd 89 f6 53 89 c3 f0 0f ba 30 00 19 c0 85
c0 75 04 <0f> 0b eb fe 89 d8 e8 f7 fe ff ff 89 da 31 c9 5b e9 7d 12 ff ff 
Feb 11 15:08:59 xerces kernel: EIP: [unlock_page+14/48] unlock_page+0xe/0x30
SS:ESP 0068:f755ff00

---------------------------------------------------------
DMESG:
Linux version 2.6.20 (root@...ces) (gcc version 3.3.5 (Debian 1:3.3.5-13)) #1
SMP Tue Feb 6 12:31:30 GMT-9 2007
BIOS-provided physical RAM map:
sanitize start
sanitize end
copy_e820_map() start: 0000000000000000 size: 000000000009c800 end:
000000000009c800 type: 1
copy_e820_map() type is E820_RAM
copy_e820_map() start: 000000000009c800 size: 0000000000003800 end:
00000000000a0000 type: 2
copy_e820_map() start: 00000000000f0000 size: 0000000000010000 end:
0000000000100000 type: 2
copy_e820_map() start: 0000000000100000 size: 000000007feec000 end:
000000007ffec000 type: 1
copy_e820_map() type is E820_RAM
copy_e820_map() start: 000000007ffec000 size: 0000000000003000 end:
000000007ffef000 type: 3
copy_e820_map() start: 000000007ffef000 size: 0000000000010000 end:
000000007ffff000 type: 2
copy_e820_map() start: 000000007ffff000 size: 0000000000001000 end:
0000000080000000 type: 4
copy_e820_map() start: 00000000fec00000 size: 0000000000001000 end:
00000000fec01000 type: 2
copy_e820_map() start: 00000000fee00000 size: 0000000000001000 end:
00000000fee01000 type: 2
copy_e820_map() start: 00000000ffff0000 size: 0000000000010000 end:
0000000100000000 type: 2
 BIOS-e820: 0000000000000000 - 000000000009c800 (usable)
 BIOS-e820: 000000000009c800 - 00000000000a0000 (reserved)
 BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000007ffec000 (usable)
 BIOS-e820: 000000007ffec000 - 000000007ffef000 (ACPI data)
 BIOS-e820: 000000007ffef000 - 000000007ffff000 (reserved)
 BIOS-e820: 000000007ffff000 - 0000000080000000 (ACPI NVS)
 BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
 BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
 BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)
1151MB HIGHMEM available.
896MB LOWMEM available.
found SMP MP-table at 000f7ea0
Entering add_active_range(0, 0, 524268) 0 entries of 256 used
Zone PFN ranges:
  DMA             0 ->     4096
  Normal       4096 ->   229376
  HighMem    229376 ->   524268
early_node_map[1] active PFN ranges
    0:        0 ->   524268
On node 0 totalpages: 524268
  DMA zone: 32 pages used for memmap
  DMA zone: 0 pages reserved
  DMA zone: 4064 pages, LIFO batch:0
  Normal zone: 1760 pages used for memmap
  Normal zone: 223520 pages, LIFO batch:31
  HighMem zone: 2303 pages used for memmap
  HighMem zone: 292589 pages, LIFO batch:31
DMI 2.3 present.
Intel MultiProcessor Specification v1.4
    Virtual Wire compatibility mode.
OEM ID: ASUS     Product ID: PROD00000000 APIC at: 0xFEE00000
Processor #0 6:10 APIC version 16
Processor #1 6:10 APIC version 16
I/O APIC #2 Version 17 at 0xFEC00000.
Enabling APIC mode:  Flat.  Using 1 I/O APICs
Processors: 2
Allocating PCI resources starting at 88000000 (gap: 80000000:7ec00000)
Detected 2133.463 MHz processor.
Built 1 zonelists.  Total pages: 520173
Kernel command line: auto BOOT_IMAGE=Linux ro root=901 acpi=off pci=noacpi
elevator=as
mapped APIC to ffffd000 (fee00000)
mapped IOAPIC to ffffc000 (fec00000)
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 16384 bytes)
Console: colour VGA+ 80x50
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 2072936k/2097072k available (1539k kernel code, 22916k reserved, 593k
data, 200k init, 1179568k highmem)
virtual kernel memory layout:
    fixmap  : 0xfffa2000 - 0xfffff000   ( 372 kB)
    pkmap   : 0xff800000 - 0xffc00000   (4096 kB)
    vmalloc : 0xf8800000 - 0xff7fe000   ( 111 MB)
    lowmem  : 0xc0000000 - 0xf8000000   ( 896 MB)
      .init : 0xc031b000 - 0xc034d000   ( 200 kB)
      .data : 0xc0280c62 - 0xc0315230   ( 593 kB)
      .text : 0xc0100000 - 0xc0280c62   (1539 kB)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay using timer specific routine.. 4269.42 BogoMIPS (lpj=2134710)
Mount-cache hash table entries: 512
CPU: After generic identify, caps: 0383fbff c1cbfbff 00000000 00000000
00000000 00000000 00000000
CPU: CLK_CTL MSR was 60031223. Reprogramming to 20031223
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 512K (64 bytes/line)
CPU: After all inits, caps: 0383fbff c1cbfbff 00000000 00000420 00000000
00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
Compat vDSO mapped to ffffe000.
Checking 'hlt' instruction... OK.
Freeing SMP alternatives: 10k freed
CPU0: AMD Athlon(TM) MP 2800+ stepping 00
Booting processor 1/1 eip 2000
Initializing CPU#1
Calibrating delay using timer specific routine.. 4266.30 BogoMIPS (lpj=2133153)
CPU: After generic identify, caps: 0383fbff c1cbfbff 00000000 00000000
00000000 00000000 00000000
CPU: CLK_CTL MSR was 60031223. Reprogramming to 20031223
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 512K (64 bytes/line)
CPU: After all inits, caps: 0383fbff c1cbfbff 00000000 00000420 00000000
00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#1.
CPU1: AMD Athlon(TM) MP 2800+ stepping 00
Total of 2 processors activated (8535.72 BogoMIPS).
ExtINT not setup in hardware but reported by MP table
ENABLING IO-APIC IRQs
..TIMER: vector=0x31 apic1=0 pin1=2 apic2=0 pin2=0
checking TSC synchronization across 2 CPUs: passed.
Brought up 2 CPUs
migration_cost=1084
NET: Registered protocol family 16
PCI: PCI BIOS revision 2.10 entry at 0xf1f30, last bus=2
PCI: Using configuration type 1
Setting up standard PCI resources
mtrr: your CPUs had inconsistent fixed MTRR settings
mtrr: probably your BIOS does not setup all CPUs.
mtrr: corrected configuration.
Linux Plug and Play Support v0.97 (c) Adam Belay
PnPBIOS: Scanning system for PnP BIOS support...
PnPBIOS: Found PnP BIOS installation structure at 0xc00fc5f0
PnPBIOS: PnP BIOS version 1.0, entry 0xf0000:0xc620, dseg 0xf0000
PnPBIOS: 13 nodes reported by PnP BIOS; 13 recorded by driver
SCSI subsystem initialized
libata version 2.00 loaded.
PCI: Probing PCI hardware
PCI: Probing PCI hardware (bus 00)
Boot video device is 0000:01:05.0
PCI: Using IRQ router AMD768 [1022/7443] at 0000:00:07.3
PCI->APIC IRQ transform: 0000:00:08.0[A] -> IRQ 16
PCI->APIC IRQ transform: 0000:00:09.0[A] -> IRQ 17
PCI->APIC IRQ transform: 0000:01:05.0[A] -> IRQ 16
PCI->APIC IRQ transform: 0000:02:04.0[A] -> IRQ 17
PCI->APIC IRQ transform: 0000:02:05.0[A] -> IRQ 18
PCI->APIC IRQ transform: 0000:02:05.1[B] -> IRQ 19
PCI->APIC IRQ transform: 0000:02:05.2[C] -> IRQ 16
PCI->APIC IRQ transform: 0000:02:06.0[A] -> IRQ 17
PCI->APIC IRQ transform: 0000:02:08.0[A] -> IRQ 19
pnp: 00:0f: ioport range 0xe400-0xe47f has been reserved
pnp: 00:0f: ioport range 0xe4e0-0xe4ff has been reserved
PCI: Bridge: 0000:00:01.0
  IO window: disabled.
  MEM window: ee000000-efcfffff
  PREFETCH window: eff00000-fb7fffff
PCI: Bridge: 0000:00:10.0
  IO window: a000-afff
  MEM window: e8800000-ebffffff
  PREFETCH window: efd00000-efdfffff
PCI: Setting latency timer of device 0000:00:01.0 to 64
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
TCP bind hash table entries: 65536 (order: 7, 524288 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
checking if image is initramfs...it isn't (bad gzip magic numbers); looks like
an initrd
Freeing initrd memory: 3072k freed
Machine check exception polling timer started.
highmem bounce pool size: 64 pages
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler deadline registered
io scheduler cfq registered
BIOS failed to enable PCI standards compliance, fixing this error.
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
Serial: 8250/16550 driver $Revision: 1.90 $ 2 ports, IRQ sharing enabled
serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
00:02: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
00:03: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
PNP: PS/2 Controller [PNP0303,PNP0f13] at 0x60,0x64 irq 1,12
serio: i8042 KBD port at 0x60,0x64 irq 1
mice: PS/2 mouse device common for all mice
TCP cubic registered
Starting balanced_irq
Using IPI Shortcut mode
input: AT Translated Set 2 keyboard as /class/input/input0
RAMDISK: cramfs filesystem found at block 0
RAMDISK: Loading 3072KiB [1 disk] into ram disk... |.
VFS: Mounted root (cramfs filesystem) readonly.
Freeing unused kernel memory: 200k freed
NET: Registered protocol family 1
md: raid1 personality registered for level 1
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
AMD7441: IDE controller at PCI slot 0000:00:07.1
AMD7441: chipset revision 4
AMD7441: not 100% native mode: will probe irqs later
AMD7441: 0000:00:07.1 (rev 04) UDMA100 controller
    ide0: BM-DMA at 0xd800-0xd807, BIOS settings: hda:DMA, hdb:DMA
    ide1: BM-DMA at 0xd808-0xd80f, BIOS settings: hdc:DMA, hdd:DMA
Probing IDE interface ide0...
hda: WDC WD800BB-00JHC0, ATA DISK drive
hdb: WDC WD2500JB-00GVC0, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: WDC WD800BB-23DKA0, ATA DISK drive
hdd: HL-DT-STDVD-ROM GDR8163B, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 128KiB
hda: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=65535/16/63, UDMA(100)
hda: cache flushes supported
 hda: hda1 hda2 hda3 hda4 < hda5 hda6 hda7 hda8 >
hdb: max request size: 512KiB
hdb: 488397168 sectors (250059 MB) w/8192KiB Cache, CHS=30401/255/63, UDMA(100)
hdb: cache flushes supported
 hdb: hdb1
hdc: max request size: 512KiB
hdc: 156312576 sectors (80032 MB) w/2048KiB Cache, CHS=16383/255/63, UDMA(100)
hdc: cache flushes supported
 hdc: hdc1 hdc2 hdc3 hdc4 < hdc5 hdc6 hdc7 hdc8 >
md: md0 stopped.
md: bind<hda1>
md: bind<hdc1>
raid1: raid set md0 active with 2 out of 2 mirrors
md: md1 stopped.
md: bind<hda2>
md: bind<hdc2>
raid1: raid set md1 active with 2 out of 2 mirrors
EXT3-fs: INFO: recovery required on readonly filesystem.
EXT3-fs: write access will be enabled during recovery.
kjournald starting.  Commit interval 5 seconds
EXT3-fs: recovery complete.
EXT3-fs: mounted filesystem with ordered data mode.
hda: cache flushes supported
hdc: cache flushes supported
hdb: cache flushes supported
Adding 2007992k swap on /dev/md0.  Priority:-1 extents:1 across:2007992k
EXT3 FS on md1, internal journal
Real Time Clock Driver v1.12ac
hdd: ATAPI 52X DVD-ROM drive, 256kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.20
ieee1394: Initialized config rom entry `ip1394'
ieee1394: raw1394: /dev/raw1394 device initialized
ohci1394: fw-host0: OHCI-1394 1.0 (PCI): IRQ=[17]  MMIO=[e9800000-e98007ff] 
Max Packet=[2048]  IR/IT contexts=[4/8]
video1394: Installed video1394 module
AMD768 RNG detected
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
ohci_hcd: 2006 August 04 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
ohci_hcd 0000:02:05.0: OHCI Host Controller
ohci_hcd 0000:02:05.0: new USB bus registered, assigned bus number 1
ohci_hcd 0000:02:05.0: irq 18, io mem 0xeb000000
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 3 ports detected
ohci_hcd 0000:02:05.1: OHCI Host Controller
ohci_hcd 0000:02:05.1: new USB bus registered, assigned bus number 2
ohci_hcd 0000:02:05.1: irq 19, io mem 0xea800000
ieee1394: Host added: ID:BUS[0-00:1023]  GUID[005042f81010a4eb]
usb usb2: configuration #1 chosen from 1 choice
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
usbcore: registered new interface driver hiddev
usbcore: registered new interface driver usbhid
drivers/usb/input/hid-core.c: v2.6:USB HID core driver
Intel(R) PRO/1000 Network Driver - version 7.3.15-k2
Copyright (c) 1999-2006 Intel Corporation.
e1000: 0000:00:09.0: e1000_probe: (PCI:66MHz:32-bit) 00:0e:0c:a0:04:dd
e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 7.0
        <Adaptec 2940 Ultra SCSI adapter>
        aic7880: Ultra Wide Channel A, SCSI Id=7, 16/253 SCBs

scsi 0:0:0:0: Sequential-Access SONY     SDX-500C         0101 PQ: 0 ANSI: 2
 target0:0:0: Beginning Domain Validation
 target0:0:0: wide asynchronous
 target0:0:0: FAST-10 WIDE SCSI 20.0 MB/s ST (100 ns, offset 8)
 target0:0:0: Domain Validation skipping write tests
 target0:0:0: Ending Domain Validation
sata_promise 0000:00:08.0: version 1.05
ata1: PATA max UDMA/133 cmd 0xF8AA6200 ctl 0xF8AA6238 bmdma 0x0 irq 16
ata2: PATA max UDMA/133 cmd 0xF8AA6280 ctl 0xF8AA62B8 bmdma 0x0 irq 16
ata3: PATA max UDMA/133 cmd 0xF8AA6300 ctl 0xF8AA6338 bmdma 0x0 irq 16
ata4: PATA max UDMA/133 cmd 0xF8AA6380 ctl 0xF8AA63B8 bmdma 0x0 irq 16
scsi1 : sata_promise
ATA: abnormal status 0x8 on port 0xF8AA621C
ata1: disabling port
scsi2 : sata_promise
ata2.00: ATA-6, max UDMA/100, 312581808 sectors: LBA48 
ata2.00: ata2: dev 0 multi count 0
ata2.00: configured for UDMA/100
scsi3 : sata_promise
ata3.00: ATA-7, max UDMA/100, 312581808 sectors: LBA48 
ata3.00: ata3: dev 0 multi count 0
ata3.00: configured for UDMA/100
scsi4 : sata_promise
ata4.00: ATA-6, max UDMA/100, 312581808 sectors: LBA48 
ata4.00: ata4: dev 0 multi count 0
ata4.00: configured for UDMA/100
scsi 2:0:0:0: Direct-Access     ATA      WDC WD1600JB-00E 15.0 PQ: 0 ANSI: 5
scsi 3:0:0:0: Direct-Access     ATA      WDC WD1600JB-00R 20.0 PQ: 0 ANSI: 5
scsi 4:0:0:0: Direct-Access     ATA      WDC WD1600JB-00E 15.0 PQ: 0 ANSI: 5
device-mapper: ioctl: 4.11.0-ioctl (2006-10-12) initialised: dm-devel@...hat.com
md: md2 stopped.
md: bind<hda3>
md: bind<hdc3>
raid1: raid set md2 active with 2 out of 2 mirrors
md: md3 stopped.
md: bind<hda5>
md: bind<hdc5>
raid1: raid set md3 active with 2 out of 2 mirrors
md: md4 stopped.
md: bind<hda6>
md: bind<hdc6>
raid1: raid set md4 active with 2 out of 2 mirrors
md: md5 stopped.
md: bind<hda7>
md: bind<hdc7>
raid1: raid set md5 active with 2 out of 2 mirrors
md: md6 stopped.
SCSI device sda: 312581808 512-byte hdwr sectors (160042 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: write cache: enabled, read cache: enabled, doesn't support
DPO or FUA
SCSI device sda: 312581808 512-byte hdwr sectors (160042 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: write cache: enabled, read cache: enabled, doesn't support
DPO or FUA
 sda: sda1
sd 2:0:0:0: Attached scsi disk sda
SCSI device sdb: 312581808 512-byte hdwr sectors (160042 MB)
sdb: Write Protect is off
sdb: Mode Sense: 00 3a 00 00
SCSI device sdb: write cache: enabled, read cache: enabled, doesn't support
DPO or FUA
SCSI device sdb: 312581808 512-byte hdwr sectors (160042 MB)
sdb: Write Protect is off
sdb: Mode Sense: 00 3a 00 00
SCSI device sdb: write cache: enabled, read cache: enabled, doesn't support
DPO or FUA
 sdb: sdb1
sd 3:0:0:0: Attached scsi disk sdb
SCSI device sdc: 312581808 512-byte hdwr sectors (160042 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 3a 00 00
SCSI device sdc: write cache: enabled, read cache: enabled, doesn't support
DPO or FUA
SCSI device sdc: 312581808 512-byte hdwr sectors (160042 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 3a 00 00
SCSI device sdc: write cache: enabled, read cache: enabled, doesn't support
DPO or FUA
 sdc: sdc1
sd 4:0:0:0: Attached scsi disk sdc
md: bind<sdb1>
md: bind<sdc1>
md: bind<sda1>
md: md6: raid array is not clean -- starting background reconstruction
raid5: automatically using best checksumming function: pIII_sse
   pIII_sse  :  5868.000 MB/sec
raid5: using function: pIII_sse (5868.000 MB/sec)
raid6: int32x1    859 MB/s
raid6: int32x2   1156 MB/s
raid6: int32x4    730 MB/s
raid6: int32x8    660 MB/s
raid6: mmxx1     1781 MB/s
raid6: mmxx2     3281 MB/s
raid6: sse1x1     464 MB/s
raid6: sse1x2     925 MB/s
raid6: using algorithm sse1x2 (925 MB/s)
md: raid6 personality registered for level 6
md: raid5 personality registered for level 5
md: raid4 personality registered for level 4
raid5: device sda1 operational as raid disk 0
raid5: device sdc1 operational as raid disk 2
raid5: device sdb1 operational as raid disk 1
raid5: allocated 3163kB for md6
raid5: raid level 5 set md6 active with 3 out of 3 devices, algorithm 2
RAID5 conf printout:
 --- rd:3 wd:3
 disk 0, o:1, dev:sda1
 disk 1, o:1, dev:sdb1
 disk 2, o:1, dev:sdc1
md: resync of RAID array md6
md: minimum _guaranteed_  speed: 1000 KB/sec/disk.
md: using maximum available idle IO bandwidth (but not more than 200000
KB/sec) for resync.
md: using 128k window, over a total of 156288256 blocks.
md: md7 stopped.
md: bind<hdc8>
md: bind<hda8>
raid1: raid set md7 active with 2 out of 2 mirrors
kjournald starting.  Commit interval 5 seconds
--------------------------------------------------------


Thank you.
Marc

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