When I tried to move one of my partitions, I got some error messages. Here are some extracts:

Move /dev/sda7 to the left  00:05:09    ( ERROR ) 

(...)

check file system on /dev/sda7 for errors and (if possible) fix them  00:00:10    ( SUCCESS )    
   e2fsck -f -y -v /dev/sda7

(...)

move file system to the left  00:04:52    ( ERROR )             
perform read-only test  00:04:52    ( ERROR )
   using internal algorithm    
   read 114013242 sectors    
   finding optimal blocksize 

(...)

read 113357882 sectors using a blocksize of 1024 sectors  00:04:36    ( ERROR ) 
   22527034 of 113357882 read    
   Error while reading block at sector 385849832    
23182394 sectors read    ( ERROR )  

(...)

libparted messages    ( INFO )          
   Input/output error during read on /dev/sda

What should I do to effectively move my partition?