msa1000 Disk Fault...

[mark.M]

show dmesg ........

SCSI error : <0 0 0 1> return code = 0x10000
end_request: I/O error, dev sda, sector 1656756488
EXT3-fs error (device sda1): ext3_find_entry: reading directory #103547075 offset 0

SCSI error : <0 0 0 1> return code = 0x10000
end_request: I/O error, dev sda, sector 1656756488
EXT3-fs error (device sda1): ext3_readdir: directory #103547075 contains a hole at offset 0
SCSI error : <0 0 0 1> return code = 0x10000
end_request: I/O error, dev sda, sector 646976344
EXT3-fs error (device sda1): ext3_find_entry: reading directory #40435812 offset 0

SCSI error : <0 0 0 1> return code = 0x10000
end_request: I/O error, dev sda, sector 646976344
EXT3-fs error (device sda1): ext3_find_entry: reading directory #40435812 offset 0

SCSI error : <0 0 0 1> return code = 0x10000
end_request: I/O error, dev sda, sector 646976344
EXT3-fs error (device sda1): ext3_find_entry: reading directory #40435812 offset 0
SCSI error : <0 0 0 1> return code = 0x10000
end_request: I/O error, dev sda, sector 646976344
EXT3-fs error (device sda1): ext3_readdir: directory #40435812 contains a hole at offset 0
SCSI error : <0 0 0 1> return code = 0x10000
end_request: I/O error, dev sda, sector 14686456
SCSI error : <0 0 0 1> return code = 0x10000
end_request: I/O error, dev sda, sector 14190584
SCSI error : <0 0 0 1> return code = 0x10000
end_request: I/O error, dev sda, sector 14190584
SCSI error : <0 0 0 1> return code = 0x10000

what is mean?
arrary disk fault change worked of new disk
but directory read error.... why? why?