From: maurice@nomail.afraid.org   
      
   Just found an unexpected slowdown when copying a large (10GB) file   
   from an Ext3 system to a USB2 Ext4 system.   
      
   I had been backing up /home onto a Freecom USB2 drive,  formatted with   
   Reiserfs.   
      
   One of the /home files is the VirtualBox VDI directory - which includes   
   a 10GB .vdi file.   
      
   When backing up to the Reiserfs USB2 drive, the .vdi file took some   
   6 minutes to copy.   
     But when copying to the Buffalo Ext4 USB2 drive, the same file took   
   over an *hour*.   
      
   Just out of curiousity I reformatted the Buffalo USB2 partition as XFS   
   (as Gparted would not offer Reiserfs), and did the copy of the .vdi   
   file.   
      This time 6 mnutes, as when copying to Reiserfs.   
      
   What am I overlooking?   
      Why would copying Ext3 -> Ext4 take 10x as long as Ext3- > Reiserfs   
   and XFS?   
      
   --   
   /\/\aurice   
   (Replace "nomail.afraid" by "bcs" to reply by email)   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)