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Unable to mount eMMC partition in NFS booting am335x
How did you formatted the raw eMMC ?
Did you configure the eMMC with mix of raw and partitioned type ?
Like, left out the first 10MiB as a raw for SPL,u-boot and kernel booting in raw mode and rest of the size of eMMC would be formatted as ext3 for filesystem mounting ?
What command did you follow to format ?
Thank you for reply, I partitioned eMMC in 3 partitions as shown below,
# fdisk -l /dev/mmcblk0
Disk /dev/mmcblk0: 3841 MB, 3841982464 bytes
255 heads, 63 sectors/track, 467 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/mmcblk0p1 * 1 5 40131 c Win95 FAT32 (LBA)
/dev/mmcblk0p2 6 30 200812+ 83 Linux
/dev/mmcblk0p3 31 55 200812+ 83 Linux
Then I didn't format /dev/mmcblk0p1 and wrote SPL, U-Boot, Kernel, dtb in /dev/mmcblk0p1. Then I formatted the /dev/mmcblk0p2 and tried mounting it as shown below,
# mkfs.ext4 /dev/mmcblk0p
mmcblk0p1 mmcblk0p2 mmcblk0p3
# mkfs.ext4 /dev/mmcblk0p
mmcblk0p1 mmcblk0p2 mmcblk0p3
# mkfs.ext4 /dev/mmcblk0p2 -L "ROOTFS"
mke2fs 1.42.8 (20-Jun-2013)
Discarding device blocks: done
Filesystem label=ROOTFS
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
Stride=0 blocks, Stripe width=0 blocks
50400 inodes, 200812 blocks
10040 blocks (5.00%) reserved for the super user
First data block=1
Maximum filesystem blocks=67371008
25 block groups
8192 blocks per group, 8192 fragments per group
2016 inodes per group
Superblock backups stored on blocks:
8193, 24577, 40961, 57345, 73729
Allocating group tables: done
Writing inode tables: done
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information: done
# mount -t ext4 /dev/mmcblk0p2 /mnt/rfs/
mount: mounting /dev/mmcblk0p2 on /mnt/rfs/ failed: No such device
#
#
#
# ls /mnt/
rfs rfs2 rfs3
Now i don't know what is wrong with this, any suggestions for debugging this issue?
Ya it was my silly mistake :P
I knew that ext4 support has to be enabled and I had enabled it also, but somehow uImage in my tftpboot was old and it didn't have ext4 support enabled. I replaced it with latest and now I am able to mount that emmc partition.
Thank you for help,
