markc@dev-laptop ~ $ dmesg | tail
SCSI error : <1 0 0 1> return code = 0x70000
end_request: I/O error, dev sdb, sector 261118
SCSI error : <1 0 0 1> return code = 0x70000
end_request: I/O error, dev sdb, sector 261126
SCSI error : <1 0 0 1> return code = 0x70000
end_request: I/O error, dev sdb, sector 261134
SCSI error : <1 0 0 1> return code = 0x70000
end_request: I/O error, dev sdb, sector 261142
SCSI error : <1 0 0 1> return code = 0x70000
end_request: I/O error, dev sdb, sector 261150