SCSI error : <0 0 0 0> return code = 0x8000002
Info fld=0x42713b, Current sda: sense key Aborted Command
Additional sense: Information unit CRC error detected
end_request: I/O error, dev sda, sector 4354363
Aborting journal on device dm-0.
ext3_abort called.
EXT3-fs error (device dm-0): ext3_journal_start_sb: Detected aborted journal
Remounting filesystem read-only
ext3_abort called.
EXT3-fs error (device dm-0): ext3_remount: Abort forced by user
ext3_abort called.
EXT3-fs error (device dm-0): ext3_remount: Abort forced by user
[root@shakespeare /]# fsck.ext3  /
e2fsck 1.35 (28-Feb-2004)
fsck.ext3: Is a directory while trying to open /

The superblock could not be read or does not describe a correct ext2
filesystem.  If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
    e2fsck -b 8193 <device>

[root@shakespeare /]# mount
/dev/mapper/VolGroup00-root on / type ext3 (rw)
none on /proc type proc (rw)
none on /sys type sysfs (rw)
none on /dev/pts type devpts (rw,gid=5,mode=620)
usbfs on /proc/bus/usb type usbfs (rw)
/dev/sda1 on /boot type ext3 (rw)
none on /dev/shm type tmpfs (rw)
/dev/mapper/VolGroup00-home on /home type ext3 (rw)
/dev/mapper/VolGroup00-var on /var type ext3 (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
[root@shakespeare /]# fsck.ext3  /dev/mapper/VolGroup00-
VolGroup00-home  VolGroup00-root  VolGroup00-var
[root@shakespeare /]# fsck.ext3  /dev/mapper/VolGroup00-root
e2fsck 1.35 (28-Feb-2004)
/dev/mapper/VolGroup00-root: recovering journal
fsck.ext3: Bad magic number in super-block while trying to re-open /dev/mapper/VolGroup00-root
e2fsck: io manager magic bad!
[root@shakespeare /]# man fsck.ext3
-bash: man: command not found
[root@shakespeare /]# fdisk /dev/sda
-bash: fdisk: command not found
[root@shakespeare /]# cd /bin
[root@shakespeare bin]# s
-bash: s: command not found
[root@shakespeare bin]# ls
[root@shakespeare bin]# cd /
[root@shakespeare /]# ls -0la
ls: invalid option -- 0
Try `ls --help' for more information.
[root@shakespeare /]# ls -la
total 0