[Rack] something wrong with minotaur - read-only file system

[Jake]

*** System restart required ***
Last login: Thu Jan 31 22:56:43 2013 from awesome.local
jake at minotaur:~$ touch sdfkj
touch: cannot touch `sdfkj': Read-only file system
jake at minotaur:~$ mount
/dev/mapper/minotaur-root on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
/dev/sdb1 on /boot type ext2 (rw)
/dev/mapper/minotaur-home on /home type ext4 (rw)
rpc_pipefs on /run/rpc_pipefs type rpc_pipefs (rw)
nfsd on /proc/fs/nfsd type nfsd (rw)

mount: warning: /etc/mtab is not writable (e.g. read-only filesystem).
        It's possible that information reported by mount(8) is not
        up to date. For actual information about system mount points
        check the /proc/mounts file.

jake at minotaur:~$