SD Driver : FAT: FAT read failed (blocknr 8) in sd card error while removing sd card during writing

[hardik patel <hk5patel@xxxxxxxxx>]

             I have sd card on board ... During recording/writing SD 
card, remove SD card ...  then i am getting endless error in dmesg as 
below :

end_request: I/O error, dev mmcblk0, sector 24
FAT: FAT read failed (blocknr 8)
mmcblk0: error -110 sending status comand<3>mmcblk0: error -110 
sending read/write command, response 0x0, card status 0x0
Block mmc_blk_issue_rq function call 346 
end_request: I/O error, dev mmcblk0, sector 4
FAT: FAT read failed (blocknr 4)
MMC: killing requests for dead queue
end_request: I/O error, dev mmcblk0, sector 8
FAT: FAT read failed (blocknr 8)
FAT: FAT read failed (blocknr 4)
FAT: FAT read failed (blocknr 8)
FAT: FAT read failed (blocknr 4)
FAT: FAT read failed (blocknr 8)
FAT: FAT read failed (blocknr 4)
FAT: FAT read failed (blocknr 8)

How to stop this message ... what is ideal situation when we remove card
 while writing ...... can u help me what to do ? 

where is the problem here? sd host controler driver problem or block 
driver problem or file system problem  

Note: I have formatted sd card with FAT32 file system . 



With EXT3 File system :

    Remove SD card while writing/recording  we got error messages like 
below. but this is not endless. After some time it stops. 

    ===========================================
    end_request: I/O error, dev mmcblk0, sector 156536
    mmcblk0: error -110 sending status comand<3>mmcblk0: error 
-110 sending read/write command, response 0x0, card status 0x0    
    mmcblk0: error -110 requesting status
    end_request: I/O error, dev mmcblk0, sector 4736
    Aborting journal on device mmcblk0p1.
    ext3_abort called.
    EXT3-fs error (device mmcblk0p1): ext3_journal_start_sb: Detected 
aborted journal
    Remounting filesystem read-only
    end_request: I/O error, dev mmcblk0, sector 4448
    journal commit I/O error   
    ===========================================