Re: new idea ( ??)

[neil <neil@xxxxxxxxxxxxxxx>]

> Gurus,
please dont address mails to a certain elite class of people leaving out 
the others... its rude!
> I have 2 GB file on unix/linux. 
firstly, its bad programming to make a program produce a 2gb file 
output. so IMHO u shud throw that program out!!! in effect, u reduce 
performance of the system. this idea is an exhisting programming riddle, 
but most programmers avoid getting into this situation by making a 
number of  small files. then its not that stupid to backup a file of say 
1mb. anyways... lets continue..
> I want to take back up (or replicate) of this file as soon as there is any change in this file.
> If we use incremental back up, it will take bake up of all 2 GB file size for a single word change.
youre rite there!!!!
> Q1 - Is there any solution in your mind, which will collecte only change byte (or blocks of say 1KB) and duplicate on back up server ?
actually... no!
this is a problem with the file system... in the present day filesystems 
(fat,ext2) a file is taken as the smallest constituent of the fs.... not 
a byte(bytes are treated like a black box).... so ineffect... if we want 
to  change just a byte in a file... we wud require the sallest 
constituent to be a byte!!! so the only solution is to make a filesystem 
of your own just for backing up stuff!!!!
you could call it (b)fs.
> Q2 :- What are the products (commercial and non-commercial like unix utilities) support back up of Open files (application) ???
now thats a question for the gurus!!!!!

> I hope, i didn't ask a tough question.
not at all!!!!

Neil