Hotplug area too small error

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http://unix.stackexchange.com – I have VM running under RHEL6, which is running under HyperV. It has a lot of important soft installed, but does not have suffocating workload (~10% CPU is used). It's been really unstable recently unexpectedly showing different I/O errors: ps aux | grep httpd -bash: /bin/ps: Input/output error -bash: /bin/grep: Input/output error I tried to fix drives by running fsck, but I've got following error: /dev/mapper/vg_vm-lv_root: recovering journal fsck.ext4: Bad magic number in super-block while trying to re-opoen /dev/mapper/vg_vm-lv_root Warning... fsck.ext4 for device /dev/mapper/vg_vm-lv_r (HowTos)