md raid 5 with xfs copying data through Samba

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Hello,

I have a Promise PCI SATA card that has 4 drives attached to it. I am
running software raid 5 with an xfs file system on md0.
/dev/md0:
       Version : 00.90.03
 Creation Time : Tue Oct 24 18:58:32 2006
    Raid Level : raid5
    Array Size : 732587520 (698.65 GiB 750.17 GB)
   Device Size : 244195840 (232.88 GiB 250.06 GB)
  Raid Devices : 4
 Total Devices : 4
Preferred Minor : 0
   Persistence : Superblock is persistent

   Update Time : Tue Oct 24 22:44:56 2006
         State : active
Active Devices : 4
Working Devices : 4
Failed Devices : 0
 Spare Devices : 0

        Layout : left-symmetric
    Chunk Size : 128K

          UUID : f801e705:94b9c801:8fd7c3fa:2031ddfd
        Events : 0.54765

   Number   Major   Minor   RaidDevice State
      0       8        1        0      active sync   /dev/sda1
      1       8       17        1      active sync   /dev/sdb1
      2       8       33        2      active sync   /dev/sdc1
      3       8       49        3      active sync   /dev/sdd1


When I try to copy files through Samba I get the following in /var/log/messages:
-----------------------
Oct 24 22:44:57 iann kernel: [42950421.330000] Modules linked in: xfs
exportfs ipv6 dm_mod lp snd_mpu401 snd_mpu401_uart parport_pc
snd_rawmidi snd_seq_device r1000 r8169 parport analog gameport pcspkr
snd_intel8x0 snd_ac97_codec snd_ac97_bus floppy snd_pcm_oss
snd_mixer_oss snd_pcm snd_timer snd soundcore shpchp snd_page_alloc
pci_hotplug psmouse serio_raw i2c_nforce2 i2c_core forcedeth
nvidia_agp agpgart sg evdev reiserfs raid5 md_mod xor ide_generic
ehci_hcd ohci_hcd usbcore ide_cd cdrom ide_disk sata_nv generic
amd74xx sd_mod sata_promise libata scsi_mod thermal processor fan
capability commoncap vga16fb vgastate fbcon tileblit font bitblit
softcursor
Oct 24 22:44:57 iann kernel: [42950421.330000] CPU:    0
Oct 24 22:44:57 iann kernel: [42950421.330000] EIP:
0060:[__bread+52/80]    Not tainted VLI
Oct 24 22:44:57 iann kernel: [42950421.330000] EFLAGS: 00210292   (
2.6.15-26-server)
Oct 24 22:44:57 iann kernel: [42950421.330000] EIP is at __bread+0x34/0x50
Oct 24 22:44:57 iann kernel: [42950421.330000] eax: 00000001   ebx:
f2dff540   ecx: c7ce79f8   edx: c01755a0
Oct 24 22:44:57 iann kernel: [ 42950421.330000] esi: f7ee965c   edi:
f2dff540   ebp: 00000000   esp: c1b07e94
Oct 24 22:44:57 iann kernel: [42950421.330000] ds: 007b   es: 007b   ss: 0068
Oct 24 22:44:57 iann kernel: [42950421.330000] Process md0_raid5 (pid:
2279, threadinfo=c1b06000 task=c1a85030)
Oct 24 22:44:57 iann kernel: [42950421.330000] Stack: c01775f0
c7ce79f8 00000001 f2df9620 f8918a63 f2dff540 00001000 00000000
Oct 24 22:44:57 iann kernel: [42950421.330000]        00000008
00000001 00000000 c1a85030 c1a85030 000001b0 c1807060 0da6c120
Oct 24 22:44:57 iann kernel: [42950421.330000]        00000000
f7ee968c c030762c c1b07f58 00000000 c1807060 c1807a80 c1a69400
Oct 24 22:44:57 iann kernel: [42950421.330000] Call Trace:
Oct 24 22:44:57 iann kernel: [ 42950421.330000]
[end_bio_bh_io_sync+48/112] end_bio_bh_io_sync+0x30/0x70
Oct 24 22:44:57 iann kernel: [42950421.330000]
[pg0+944495203/1069167616] handle_stripe+0xbb3/0x1450 [raid5]
Oct 24 22:44:57 iann kernel: [ 42950421.330000]  [schedule+1372/3440]
schedule+0x55c/0xd70
Oct 24 22:44:57 iann kernel: [42950421.330000]
[__generic_unplug_device+26/48] __generic_unplug_device+0x1a/0x30
Oct 24 22:44:57 iann kernel: [42950421.330000 ]
[pg0+944484391/1069167616] release_stripe+0x27/0x190 [raid5]
Oct 24 22:44:57 iann kernel: [42950421.330000]
[pg0+944500176/1069167616] raid5d+0x170/0x300 [raid5]
Oct 24 22:44:57 iann kernel: [42950421.330000]
[pg0+944733917/1069167616] md_thread+0x4d/0x150 [md_mod]
Oct 24 22:44:57 iann kernel: [42950421.330000]
[autoremove_wake_function+0/96] autoremove_wake_function+0x0/0x60
Oct 24 22:44:57 iann kernel: [42950421.330000]
[pg0+944733840/1069167616] md_thread+0x0/0x150 [md_mod]
Oct 24 22:44:57 iann kernel: [42950421.330000]  [kthread+200/208]
kthread+0xc8/0xd0
Oct 24 22:44:57 iann kernel: [42950421.330000]  [kthread+0/208] kthread+0x0/0xd0
Oct 24 22:44:57 iann kernel: [42950421.330000]
[kernel_thread_helper+5/16] kernel_thread_helper+0x5/0x10
Oct 24 22:44:57 iann kernel: [42950421.330000] Code: 24 1c 89 44 24 0c
8b 44 24 18 89 54 24 08 89 44 24 04 8b 44 24 14 89 04 24 e8 f9 fe ff
ff 85 c0 89 c2 74 06 8b 00 a8 01 74 0d 89 <d0> 83 c4 10 c3 8d b4 26 00
00 00 00 89 54 24 14 83 c4 10 e9 34

Then the transfer fails. When I ssh into the machine, I cd to the
mount point of md0, and the terminal inside of Putty stops responding,
Ctrl C doesn't work. I am forced to close the connection
I have tried two different PCI SATA cards and they have both had this
happen. Any ideas on what could be causing this?

PLEASE CC ME WITH ANY RESPONSES, I'M NOT SUBSCRIBED TO THE KERNEL LIST.
Thanks,
Ian Williamson
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