Re: using reiserfs as a DB

[Phil Howard <phil-reiserfs@ipal.net>]

On Mon, Apr 22, 2002 at 09:12:36PM +0300, Yura Umanets wrote:

| Phil Howard wrote:
| 
| >"By the keys" means what?  Are the keys the filenames/paths, 
| 
| The key in reiserfs seems like four-dimentional coordinate of the 
| certain item in filesystem.
| 
| The first component is identifier of directory where given object (file 
| or directory) lies. Second - identifier of the given object. Third 
| component - offset inside object. If object is file, then offset is 
| offset inside this file, if directory - hashed name of first entry in 
| this direntry. And finally last component is type of the item (statdata, 
| direntry, direct item, indirect item).

How is the application going to know what the key is for a particular
file?  How is the application going to translate what it has as a key,
into the kind of key the raw interface uses?  How costly is this lookup?

-- 
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| Phil Howard - KA9WGN |   Dallas   | http://linuxhomepage.com/ |
| phil-nospam@ipal.net | Texas, USA | http://phil.ipal.org/     |
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