Does this theory hold water

[Darin Perusich]

it depends on the situation and the system, installing then overlaying 
the files. if i have a known good level 0 dump of the filesystems it 
might be quicker to boot rescue, fdisk the disks, and restore.

Justin Bennett wrote:
> I'm loading up my victim right now. Ok, thanks for the 2nd terminal tip.
> You would agree though, it's better to do an install and overlay files
> then just dump a tar to a blank disk.
> 
> Justin
> 
> Darin Perusich said:
> 
>>this should work, i've done similare restores on solaris systems. you
>>shouldn't have to copy the tarball onto the freshly installed systems.
>>before saying OK to reboot the system jump into another terminal
>>(ctrl+alt+F3), ifconfig eth0 up, startup portmap and nfs. mount your
>>network drive, and extract the tarball, lilo the disk and reboot.
>>
>>this is something i'd test and document all the steps before a fire
>>starts, knowing that you've done it before can save alot of agrivation
>>and get you home earlier.
>>
>>Justin Bennett wrote:
>>
>>>Ok let me know if this makes sense I know there has been some
>>>discussion on here in the past, I've never done this but think it
>>>should work.
>>>
>>>I have a RedHat 6.2 Pro web server, I'm running a nightly tar:
>>>
>>>tar -czf /home/backup/backup.tar.gz * --directory / --exclude=proc
>>>--exclude=home/backup --exclude=mnt --exclude=*/lost+found
>>>
>>>to a network drive, I like that because the tar is only 900M and if
>>>our Webmaster blows something away (you know those graphic artist
>>>types) :) it's easy to pull something out of a tar on disk rather than
>>>tape. if this drive were to fail. I should be able to recover this
>>>way:
>>>
>>>1. Reload box with redhat 6.2
>>>   Use same partition scheme
>>>2. Boot into new 6.2
>>>3. Copy tar to local drive
>>>4. Boot into rescue mode (so that no files are used/locked on local
>>>disk)
>>>   mknod /dev/sda1,2,3, ect
>>>   Mount disk structure under something like /mnt/root
>>>   chroot /mnt/root
>>>5. Dump tar to disk (overlaying files)
>>>6. Run lilo
>>>7. Reboot and boot from disk
>>>
>>>Does this make sense? Do I need to do all this or can I boot into
>>>rescue mode, fdisk and mkfs on all drives, mount and chroot, dump tar,
>>>lilo, and reboot. I was just wondering if I don't do an install if
>>>things like /mnt are made? Sounds like it might be fun to try on a
>>>test box... :)
>>>
>>>Thanks
>>>Justin
>>>
>>
>>
>>--
>>Darin Perusich
>>Unix Systems Administrator
>>Cognigen Corp.
>>darinper at cognigencorp.com
>>
>>
>>
>>--
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> 
> 
> 


-- 
Darin Perusich
Unix Systems Administrator
Cognigen Corp.
darinper at cognigencorp.com