Hardlink doesn't preserve dates

batat · Post by **batat** » Mon Oct 06, 2008 10:15 pm

Hardlink doesn't preserve date of creation, modification and last access.

Also comparison of files seems quite slow. Are you using filters in right order? Also calculating crc from random small piece can do a trick.

DV · Post by DV » Tue Oct 07, 2008 8:46 am

Ok - will look into hardlink attributes.

Filters should be optimized - if the files sizes are the same only a small chunk of the file is checked first to see if it's worth calculating a full crc

Bitofawally · Post by **Bitofawally** » Sun Mar 15, 2009 10:41 am

What is a crc?

DV · Post by DV » Sun Mar 15, 2009 11:26 am

A Cyclic redundancy check - it's a kind of fingerprint for each file.

WillianBR · Post by **WillianBR** » Fri Mar 20, 2009 12:31 pm

Bitofawally, CRC is a hash algorithm. It's used the get a magic number based on file content. But it's not the best (CRC16 ou CRC32). We can get colision some times. We can found best options (MD5, SHA-1, SHA-256, Tiger, GOST-Hash, etc). But if you increase the level, you will get extra overclock too!