Tuesday, 30 August 2011

backups - part1

There are 2 sorts of people - those who keep backups and those who have never had a computer system failure  when it contained important stuff . Ive now got a backup system that works reasonably well .
I use rsnapshot and have written a bash script  that automatically updates the server backups of a windows machine. but I haven't got off-site backups. Ive recently been subscribed to the livedrive backup system - I have unlimited  backup space !
The  backups I have are done with rsync, which is very efficient. My backup system keeps incremental backups , but links files that have stayed the smae, thus minimizing  the amount of stuff that gets sent over the wires.

ive spent a while trying to get curlftpsfs and rsyn working , so far to no avail.  I then cam across lftp , described as  a 'poor mans' rsync', so i gave that a go. Ive got config script that includes the stuff i want to back up, including the multiple copies created by rsnaphot. But there are a  couple of serious problems.

file transfer to livedrive
heres one problem - upload speed of 20K/s .
So stuff takes ages. And because you cant link files on livedrive, it transfers duplicate copies. it is taking over 24 hours to do a copy of what I want to backup.
So this is clearly impracticable.  What I'll have to do is go back to rsync and see what i can do , i try  lftp  with just the option of sending newer files to livedrive. it wont keep incremental backups that can be easily restored, but if i set it to not delete, it may keep copies  , but not versions, of svey file i want to backup.

I'll have to see how I get on

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