Hi,
I am using Linux version 2.6.10_mvl401-davinci_evm and already using patch
045 from TI.
It work fine in 2G SD card whit FAT32 or other file systems,
but when i format SDHC 8G using FAT 32, it gets some troubles:
The size is wrong , the message as follow:
# ./mkdosfs -F 32 /dev/mmcblk0
mkdosfs 2.11 (12 Mar 2005)
# df -m
Filesystem 1M-blocks Used Available Use% Mounted on
/dev/mmcblk0 1022 0 1022 0% /mnt/sd
And then i test read/write operation in /mnt/sd, it encounter the follow
messages:
#cp /mnt/sd/test.img /mnt/sd/test1.img (test.img size is 10MB)
cp: Read error: Input/output error
But when i using format in desktop (fedora core 6 in desktop) by usb card
reader,
the size is correct.
#./mkdosfs -F 32 /dev/sda1
# df -m
Filesystem 1M-blocks Used Available Use% Mounted on
/dev/mmcblk0 7807 0 7807 0% /mnt/sd
and then i test read/write operation in /mnt/sd, everything is ok.
I guess it may be wrong in MBR when format, but i don't know how to fix this
problem.
Any help will be very appreciated
Thanks very much for your answer.
----------------------------------------------------- test log
--------------------------------------------------
---using ext2 in 8G SDHC card --------
#lsmod
Module Size Used by Tainted: PF
sdio_memory_fd 28032 0 - Live 0xbf03c000
sdio_davinci_hcd 27388 0 - Live 0xbf034000
sdio_busdriver 88528 2 sdio_memory_fd,sdio_davinci_hcd, Live 0xbf01d000
sdio_lib 11232 3 sdio_memory_fd,sdio_davinci_hcd,sdio_busdriver, Live
0xbf019000
dsplinkk 68632 0 - Live 0xbf007000
cmemk 12476 0 - Live 0xbf002000
dspon 1376 0 - Live 0xbf000000
#mkfs.ext2 /dev/mmcblk0p1
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
1001920 inodes, 2002092 blocks
100104 blocks (5.00%) reserved for the super user
First data block=0
62 block groups
32768 blocks per group, 32768 fragments per group
16160 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632
Writing inode tables: 0/62 1/62 2/62 3/62 4/62
5/62 6/62 7/62 8/62
9/6210/6211/6212/6213/6214/6215/6216/6217/6218/6219/6220/6221/6222/6223/6224/6225/6226/6227/6228/6229/6230/6231/6232/6233/6234/6235/6236/6237/6238/6239/6240/6241/6242/6243/6244/6245/6246/6247/6248/6249/6250/6251/6252/6253/6254/6255/6256/6257/6258/6259/6260/6261/62done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 24 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
#mount /dev/mmcblk0p1 /mnt/sd
#mount |grep sd
/dev/mmcblk0p1 on /mnt/sd type ext2 (rw,nogrpid)
#df -m | grep sd
/dev/mmcblk0p1 7698 0 7307 0% /mnt/sd
#cp /tmp/ftp_temp/test.img /mnt/sd
#cp /mnt/sd/test.img /mnt/sd/test2.img
#df -m | grep sd
/dev/mmcblk0p1 7698 36 7271 0% /mnt/sd
Everythings is ok .
---------------------------------------using FAT32 in 8G SDHC card
--------------------------------------
#./mkdosfs -F32 /dev/mmcblk0p1
mkdosfs 2.11 (12 Mar 2005)
#mount /dev/mmcblk0p1 /mnt/sd
#mount | grep sd
/dev/mmcblk0p1 on /mnt/sd type vfat (rw,nodiratime,fmask=0033,dmask=0033)
#df -m |grep sd
/dev/mmcblk0p1 1022 0 1022 0% /mnt/sd
#cp /tmp/ftp_temp/test.img /mnt/sd
#cp /mnt/sd/test.img /mnt/sd/tes2.img
The size of mount in sd folder is wrong with 1022 (0.99G).
--
Best Regards,
Goung.
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