############# INPUT/OUTPUT ERROR FILESYSTEM IS UNMOUNTED
> when you see df -h output as input/ouptput error.
> you need to deport and import the disk group. then it will be in good state.
> Before deport the diskgroup you need to unmount the all the filesystems.
#umount -a -t vxfs << it means all type of veritas filesystems will be unmounted.
or #umount <fs name>
then deport the diskgrooup
check for diskgroup
#vxdisk list
#vxdg deport diskgroup
#vxdg import diskgroup
then mount the filesystems
#mount -a
still if you see the issue reboot is only the option
# reboot
or
#shutdown -r now
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