root fs error on boot

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http://forums.fedoraforum.org – When I boot, I always get these messages: Code: [    5.916703] EXT4-fs warning (device dm-1): ext4_clear_journal_err:4401: Filesystem error recorded from previous mount: IO failure [    5.916775] EXT4-fs warning (device dm-1): ext4_clear_journal_err:4402: Marking fs in need of filesystem check. [    5.917544] EXT4-fs (dm-1): mounted filesystem with ordered data mode. Opts: (null) [    6.086195] dracut: Checking ext4: /dev/mapper/vg_elmer-lv_root [    6.086460] dracut: issuing e2fsck -a  /dev/mapper/vg_elmer-lv_root [  13 (HowTos)