Problems after force reboot. Hard disk problems

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https://bbs.archlinux.org – Yesterday, I ran a c program on my work station. And, the program have some big out puts, files with size 2G,7G.And then the disk was filled. Then some problem happened.When rebooting it shows something like:INIT: cannot execute "/sbin/agetty"INIT: Id "c2" respawning too fast: disabled for 5 minutesAnd then, after some time. It successfully boot up. But there are still problems:when I try to delete or mv or cp some of the big data,  the /home directory file system automatically remounted as read only file system.And I try to reboot it. It again seems ok, but still can& (HowTos)