umount pegasus:/image_archive/ia_1
umount pegasus:/image_archive/ia_2
umount pegasus:/image_archive/ia_3
mount -t nfs -o soft,intr,timeo=10 pegasus:/image_archive/ia_1     /image_archive/ia_1
mount -t nfs -o soft,intr,timeo=10 pegasus:/image_archive/ia_2     /image_archive/ia_2
mount -t nfs -o soft,intr,timeo=10 pegasus:/image_archive/ia_3     /image_archive/ia_3
exportfs