Re: [SLUG] Re: backup of linux files

From: steve (steve@itcom.net)
Date: Sun Feb 17 2002 - 18:54:10 EST


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No GUI. It server configured. You setup the files and configure cron to run
it for you. It wil send and e-mail letting you know of problems and done
backups. Well, Amanda uses tar. So create a new dir and opy some files into
it and do the backup resore on it.

On Sunday 17 February 2002 13:07, you wrote:
> On Sunday 17 February 2002 10:29 am, you wrote:
> Wow, thanks for a good introduction. I currently do not use the network
> capabilities of linux as yet and have only a local machine. I like the
> idea of doing incremental backups and would like to use the cron scheduler
> to perform them. I need a safe way to test a backup because I used the
> "dump" program and it detroyed the RedHat filesystem. I probably only need
> to make a monthly backup of system files and possibly a daily or weekly
> backup of the home directory. Is there a GUI interface for Amanda backup?
>
> Andy
>
> > There are different approaches on this.
> >
> > You can backup everything so that you can recreate your computer
> > basically from scratch. It takes longer and requires more tape space. Or
> > you only backup files that change. I.e config and data files.
> >
> > Backup is done to recover from two things. Either data entry or basically
> > hard disk failure. If you need to recover some data like an invoice that
> > was deleted you find it on the backup and voila! If you disk crash then
> > you have to recreate it.
> >
> > The problem you run into is different versions of software. Lets say you
> > buy RH 7.2 and install it today. Two months from now you have made an
> > upgrade to your binaries. So you have the original versions of the CD and
> > the newer one on the backup. (You may be forced to do upgrades of
> > binaries due to security issues.)
> >
> > Then you have two ways of backing up. Only incremental backup, i.e.
> > changed files, or all. This could be a huge factor if you have a LOT of
> > data but only few files change and you don't have the time to be down
> > while it backs up all you data. I tend to backup all data and config
> > files.
> >
> > There's a factor when you backup live data. (I.e. in use.) You could
> > backup incomplete transactions. I.e. partial save of the new/modified
> > data. Maybe you rather have that than nothing. (This could happen when
> > your data is spread across several files, as is often the case with SQL.)
> >
> > Which brings us to the rotation of backup media.
> >
> > Do you need to keep a going record for example for the last year? Is it
> > worth the media and time/space to keep a backup every week or month so
> > that you can go back to a previous date?
> >
> > At a minimum you have two tapes you cycle through. Two because if the
> > backup fails before it's done, you have no backup.
> >
> > I tend to keep a week regardless. And I seldom backup binaries unless I
> > do something too custom to easily recreate. Walk through dummy backup
> > restore and see what you run into. (Preferably on a different but similar
> > system.)
> >
> > Look at what it takes for you to create a new system to restore to. One
> > rebuilds a computer in about 30 min. Add another 15 to get the latest
> > binaries. Then restore f.ex. your data and you are back in business.
> >
> > Of course now we have another option too, CD's. You can burn to CD/W or
> > CD/RW. There are different conditions that may exist for you that adds
> > yet another twist to the story. But the above should give you enough to
> > get you through. As usual I'm happy to give my views and considerations.
> >
> > Steve
> >
> > On Sunday 17 February 2002 07:31, you wrote:
> > > Josh and Steve, I appreciate the suggestions. I will look into the
> > > Amanda interface. I basically want to back up the RH 7.2 root and home
> > > partitions (approx 4 GB) on a separate area of the hard drive (I have
> > > only one 40GB drive) most of which is devoted to Linux but shares space
> > > with Win98se. What file directories or partitions should I back up?
> > > i.e. /usr, /home, everything?
> > >
> > > Andy W.
> > > ----- Original Message -----
> > > From: "steve" <steve@itcom.net>
> > > To: <slug@nks.net>
> > > Sent: Saturday, February 16, 2002 8:18 PM
> > > Subject: Re: [SLUG] Re: backup of linux files
> > >
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> > > >
> > > > I use tar with gz option to backup some 10G just fine.
> > > >
> > > > On Saturday 16 February 2002 18:58, you wrote:
> > > > > Anyone familiar with the use of "dump" and "restore" to backup
> > > > > files. I tried the man page for these and tried "dump" on my home
> > > > > partition directory and ended up corrupting the filesystem. Are
> > > > > there
> > >
> > > alternatives
> > >
> > > > > to the dump and restore program.
> > > > >
> > > > > Thanks, Andy W.
> > > >
> > > > - --
> > > >
> > > > Steve
> > > >
> > > > _______________________________________________________
> > > > No, I don't Yahoo, I have a real e-mail account... : )

- --

Steve

_______________________________________________________
No, I don't Yahoo, I have a real e-mail account... : )

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