Failed to mount mmcblk2p4 block

[hominjeon]

The mount fails during boot.

EXT4-fs (mmcblk2p5): mounted filesystem with ordered data mode. Opts: (null)
EXT4-fs (mmcblk2p4): Ignoring removed nomblk_io_submit option
EXT4-fs warning (device mmcblk2p4): ext4_clear_journal_err:4497: Filesystem error recorded from previous mount: IO failure
EXT4-fs warning (device mmcblk2p4): ext4_clear_journal_err:4498: Marking fs in need of filesystem check.
EXT4-fs (mmcblk2p4): warning: mounting fs with errors, running e2fsck is recommended
EXT4-fs (mmcblk2p4): recovery complete
EXT4-fs (mmcblk2p4): mounted filesystem with ordered data mode. Opts: nomblk_io_submit,noauto_da_alloc,errors=panic
EXT4-fs (mmcblk2p6): Ignoring removed nomblk_io_submit option
EXT4-fs (mmcblk2p6): recovery complete
EXT4-fs (mmcblk2p6): mounted filesystem with ordered data mode. Opts: nomblk_io_submit
EXT4-fs (mmcblk2p7): mounted filesystem with ordered data mode. Opts: (null)
EXT4-fs (mmcblk2p9): recovery complete
EXT4-fs (mmcblk2p9): mounted filesystem with ordered data mode. Opts: (null)
init: /dev/hw_random not found

I want to know why it fails.

[hominjeon]

Thank you for your answer.
Your answer was helpful to me.

[hominjeon]

This mmc is KLM8G1GEND-B031 by samsung.

I formated it. and It running normally after formatting.

but, I want to know why the filesystem is damaged.

[jimmychan]

Sometime the filesystem may be corrupted when power lose suddenly.

[jimmychan]

what is this mmc device? have you try to format it ?  the filesystem may be damaged so you cannot mount it.