dmraid and log messages

Hi,
finally I've setup my dmraid system on A8r32-MVP and SiliconImage 
controller because of unsupported ULI tech.
All gone well, but looking at /var/log/messages there are these line for 
each sturtup:

    Dec 22 22:05:11 NeXT Buffer I/O error on device sda4, logical block
    160633728
    Dec 22 22:05:11 NeXT attempt to access beyond end of device
    Dec 22 22:05:11 NeXT sda: rw=0, want=290438930, limit=145226112
    Dec 22 22:05:11 NeXT Buffer I/O error on device sda4, logical block
    160633729
    Dec 22 22:05:11 NeXT attempt to access beyond end of device
    Dec 22 22:05:11 NeXT sda: rw=0, want=290438931, limit=145226112
    Dec 22 22:05:11 NeXT attempt to access beyond end of device
    Dec 22 22:05:11 NeXT sda: rw=0, want=290438932, limit=145226112
    Dec 22 22:05:11 NeXT attempt to access beyond end of device

These are the line releted to the disks in raid:

    Dec 22 22:05:11 NeXT ata1: SATA link up 1.5 Gbps (SStatus 113
    SControl 300)
    Dec 22 22:05:11 NeXT ata1.00: ATA-6: WDC WD740GD-00FLA0, 21.08U21,
    max UDMA/133
    Dec 22 22:05:11 NeXT ata1.00: 145226112 sectors, multi 16: LBA48
    Dec 22 22:05:11 NeXT ata1.00: applying bridge limits
    Dec 22 22:05:11 NeXT ata1.00: configured for UDMA/100
    Dec 22 22:05:11 NeXT ata2: SATA link up 1.5 Gbps (SStatus 113
    SControl 300)
    Dec 22 22:05:11 NeXT ata2.00: ATA-6: WDC WD740GD-00FLA1, 27.08D27,
    max UDMA/133
    Dec 22 22:05:11 NeXT ata2.00: 145226112 sectors, multi 16: LBA48
    Dec 22 22:05:11 NeXT ata2.00: configured for UDMA/100
    Dec 22 22:05:11 NeXT scsi 0:0:0:0: Direct-Access     ATA      WDC
    WD740GD-00FL 21.0 PQ: 0 ANSI: 5
    Dec 22 22:05:11 NeXT sd 0:0:0:0: [sda] 145226112 512-byte hardware
    sectors (74356 MB)
    Dec 22 22:05:11 NeXT sd 0:0:0:0: [sda] Write Protect is off
    Dec 22 22:05:11 NeXT sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
    Dec 22 22:05:11 NeXT sd 0:0:0:0: [sda] Write cache: enabled, read
    cache: enabled, doesn't support DPO or FUA
    Dec 22 22:05:11 NeXT sd 0:0:0:0: [sda] 145226112 512-byte hardware
    sectors (74356 MB)
    Dec 22 22:05:11 NeXT sd 0:0:0:0: [sda] Write Protect is off
    Dec 22 22:05:11 NeXT sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
    Dec 22 22:05:11 NeXT sd 0:0:0:0: [sda] Write cache: enabled, read
    cache: enabled, doesn't support DPO or FUA
    Dec 22 22:05:11 NeXT sda: sda1 sda2 sda3 sda4
    Dec 22 22:05:11 NeXT sda: p4 exceeds device capacity
    Dec 22 22:05:11 NeXT sd 0:0:0:0: [sda] Attached SCSI disk
    Dec 22 22:05:11 NeXT scsi 1:0:0:0: Direct-Access     ATA      WDC
    WD740GD-00FL 27.0 PQ: 0 ANSI: 5
    Dec 22 22:05:11 NeXT sd 1:0:0:0: [sdb] 145226112 512-byte hardware
    sectors (74356 MB)
    Dec 22 22:05:11 NeXT sd 1:0:0:0: [sdb] Write Protect is off
    Dec 22 22:05:11 NeXT sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
    Dec 22 22:05:11 NeXT sd 1:0:0:0: [sdb] Write cache: enabled, read
    cache: enabled, doesn't support DPO or FUA
    Dec 22 22:05:11 NeXT sd 1:0:0:0: [sdb] 145226112 512-byte hardware
    sectors (74356 MB)
    Dec 22 22:05:11 NeXT sd 1:0:0:0: [sdb] Write Protect is off
    Dec 22 22:05:11 NeXT sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
    Dec 22 22:05:11 NeXT sd 1:0:0:0: [sdb] Write cache: enabled, read
    cache: enabled, doesn't support DPO or FUA
    Dec 22 22:05:11 NeXT sdb: unknown partition table
    Dec 22 22:05:11 NeXT sd 1:0:0:0: [sdb] Attached SCSI disk

Pleace note that sda has its-own partitions instead sdb has unknown 
partition table.

Do you know where is the fault?