Hi,
Currently we want to format emmc to ext4 with journal of ordered mode.
But when we execute the following command, some warning messages occur.
mount:
mount -t ext4 /dev/mmcblk0p2 /mnt/video_storage
warning:
[ 259.962616] EXT4-fs (mmcblk0p2): mounted filesystem without journal. Opts: (null)
As far as we know, the default for mount ext4 should be journal of ordered mode.
www.kernel.org/.../ext4.txt
But even if we use the following command to specify the use of journal, an error occur.
mount:
mount -t ext4 -o data=ordered /dev/mmcblk0p2 /mnt/video_storage
warning:
[ 1039.606413] EXT4-fs (mmcblk0p2): can't mount with data=, fs mounted w/o journal
mount: mounting /dev/mmcblk0p2 on /mnt/video_storage failed: Invalid argument
Can you give us some directions?
