RE: [Bobs-devel] complete / incremental backups

[Rene R. <re...@gr...>]

Don't trust the date the files have on the filesystem. That is not very
useful. BOBS adds a datestamp to the filename to keep track of dates.
The dates of file in "current" should reflect the dates of the same
files on your server..

Try looking at the actual file contents and you will see what I mean.

"Current" is always a mirror of your server. "Incremental" is storage
for changes in the mirror.

Cheers
Rene


On Wed, 2003-05-28 at 13:50, Arnaud CONCHON wrote:
> > On Wed, 2003-05-21 at 09:44, Arnaud CONCHON wrote:
> > > Hi,
> > > I'm new to using this piece of software and there's a question 
> > i was asking
> > > myself. Is it possible to define a day in the week to do a 
> > complete backup
> > > whereas the other days, it will only do incremental backups ?
> > 
> > 
> > You will have to keep a "current" backup at all times. That means that
> > you will need as much diskspace for the "current" backup as you have
> > files on your server.
> > If you have 100 GB worth of files you are making backups of, you will
> > also need at least 100 GB diskspace for the "current" backup. You need
> > more space to keep incremental backup.
> > 
> > "Current" is always a snapshot of the files at the time of backup.
> > 
> > You cannot make incremental backup without keeping "current" up to date.
> > "incremental" is nothing but the changes that happen to files in
> > "current".
> 
> In my backups, the Current is always the first backups and the incremental is the new version of the files that are in the Current. Which means that if i restore the Current backups, I won't have the last versions of the files. Wouln't it be more interesting if the Current backups were always the last versions of every files, and in the incremental, the old versions of theses files (with no file if there are no change on the files...)
> To make things clearer, I have for example in the current backup a file:
> file1.exe 10 may 2003
> 
> and in incremental
> file1.exe 12 may 2003
> file1.exe 15 may 2003
> 
> Why don't we have instead this :
> 
> Current: 
> File1.exe 15 may 2003
> 
> Incremental:
> 
> file1.exe 10 may 2003
> file1.exe 12 may 2003
> 
> Which would make the CURRENT backup always the LAST versions, and in incremental, the past versions of the files. The reason behind this is if one day one of my servers crash and i want to restore all the files by copying the Current folder to the new server, i dont want to overwrite after all the files with the incremental files... i should only have to copy the current files, and in case i need an older file, i can have a look in the incremental files...
> What do you think about this?
> 
> Best Regards.
> 
> 
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-- 
Rene Rask <re...@gr...>