[Dirvish] Has anybody successfully restored a Linux OS (f.i., Ubuntu) with Dirvish?

wes dirvish at the-wes.com
Mon Jun 21 05:23:47 UTC 2010


I see no reason you could not copy/paste the whole thing into a page with an
appropriate title. Others can refine and improve upon it, but I'd bet good
money that no one will delete it or complain that it was put there.

-wes

On Sun, Jun 20, 2010 at 5:09 PM, Don Gould <don at bowenvale.co.nz> wrote:

> Strikes me that all this content should be added to the wiki shouldn't it?
>
> I'm happy to do a bit of editing, but I'm a newbi here and don't want to
> tread on anyones toes.
>
> What do others think?
>
> Cheers Don
>
> On 20/06/2010 7:36 p.m., Keith Lofstrom wrote:
> > On Sat, Jun 19, 2010 at 08:31:31PM +0200, JPH wrote:
> >> It is virtually impossible to do a full restore without doing some
> >> serious after work. The problem is at least that your boot sector is not
> >> being backed up, and if it would be, it'd be most probably useless
> >> because the file layout on disk has changed. Another problem you'll run
> >> in to with Ubuntu is that the filesystem's UUID's have changed during
> >> format.
> >
> > While I don't know how Grub-2 does things, with Grub-1 I name the
> > partitions and use those names in fstab.  I also do recovery in
> > a script (running on a second machine) that does the format and
> > grub install.   My full-disk restores are automated, so they use
> > clock time but not a lot of serious user time, beyond decisions
> > as to what to restore.
> >
> > Also, when I buy a disk for installation, I buy an identical
> > spare.  They are cheap enough, and that saves the trouble of
> > deciding how to adapt to a different drive size.
> >
> > The original questioner was thinking ahead - when you need to do
> > a full disk restore, it always happens at an inconvenient time.
> > Thus, it is good to have all the scripts written and materials
> > available, so when that sad day comes the stress is minimized.
> > That includes setting up the original disk for easiest restore.
> > Many "features" like UUID partition labels in fstab, or even
> > LVM (without proper tools for rebuilding) can get in the way
> > of restore, without much more sophisticated scripts to do the
> > recovery.
> >
> > Note, many recovery steps are aided by swap enclosures.  Another
> > way to quicken recovery is to save the first few kilobytes of
> > each drive, df information, and sfdisk information with every
> > backup.
> >
> > Yet another aid is to put three partitions on each backup drive,
> > with a small bootable OS partition and swap.  When I build a
> > new backup drive, I typically just "dd" the OS partition from
> > an older backup drive to a newer one.  With a two-drive system,
> > that can be done by dd-ing the old partition to a file, then
> > "dd" again onto the new drive OS partition.
> >
> > My worst case was a drive failure on my laptop the night
> > before a plane flight and a long trip.  With all the
> > automation in place, it was a simple matter of putting the
> > spare laptop drive in a swap tray in a 2 drive system,
> > booting from the backup drive, starting the script, and
> > going to bed.  A few hours later, I had a drive ready to
> > swap into the laptop.  On the plane, I loaded the failed
> > hard drive into a second drive bay on my laptop, and was
> > able to recover most of the files I had worked on the day
> > before the failure.
> >
> > Many of these features should be in a new program which
> > might be called "divish-restore-ultra".  A better programmer
> > than I can write it.  Similarly, perhaps someone can write
> > a guide to setting up a computer for maximum dirvish/rsync
> > friendliness.  But those hypothetical people have more time
> > than I do.
> >
> > Keith
> >
> _______________________________________________
> Dirvish mailing list
> Dirvish at dirvish.org
> http://www.dirvish.org/mailman/listinfo/dirvish
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.dirvish.org/pipermail/dirvish/attachments/20100620/4f2ba762/attachment.html 


More information about the Dirvish mailing list