From: MADHAV SINGHCHAUHAN <singh.madhav@samsung.com>
To: Ethan Du <ethan.too@gmail.com>, hardik patel <hk5patel@gmail.com>
Cc: "linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>
Subject: Re: Re: SD Driver : FAT: FAT read failed (blocknr 8) in sd card error while removing sd card during writing
Date: Thu, 08 Jul 2010 13:05:47 +0000 (GMT) [thread overview]
Message-ID: <29638758.295271278594347002.JavaMail.weblogic@epml07> (raw)
Card removal not detected by driver?
You should see a line of log if card removal is detected:
card xxxx removed
Would you describe how do you detect card removal/insertion on your board?
Regards,
-Ethan
On Thu, Jul 8, 2010 at 6:05 PM, hardik patel <hk5patel@gmail.com> wrote:
> 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 ?
>
>>When we insert the card hot plug dameon start sending the request to block layer and kernel block layer
>>start sending the request to card.But when you remove the card in between request queue is not flushed properly..
>>so you need to flush your request queue at appropriate time.Also please note that even that you flush your request queue
>>at appropriate time some messages will come.
> 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
> ===========================================
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next reply other threads:[~2010-07-08 13:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-08 13:05 MADHAV SINGHCHAUHAN [this message]
2010-07-08 18:08 ` Re: SD Driver : FAT: FAT read failed (blocknr 8) in sd card error while removing sd card during writing hardik patel
2010-07-09 3:50 ` Madhav Chauhan
2010-07-09 4:41 ` hardik patel
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