Bare Metal Recovery FreeBSD How To
nuno at fccn.pt
Wed Dec 19 09:19:31 PST 2007
Thank you all on responding this mater.
Well the situation is the hardware is wrecked! So the only thing that I have
is the content of all partitions available. The backup is a tar uncompressed
So I have the contents in a server.
So the objective is to use a completely different hardware but with the same
kernel, same configurations, same partitions, etc. In that way, what I
thought (but I don't know if it is the proper way) was to install a minimum
freeBSD (same version which is 6.0) with the following partitions and
booting with F1 option:
/dev/ad1s1b none swap sw 0 0
/dev/ad1s1a / ufs rw 1 1
/dev/ad1s1d /new_root ufs rw 2 2
/dev/ad1s1e /archive ufs rw 2 2
/dev/acd0 /cdrom cd9660 ro,noauto 0 0
Then migrate the partions that I have in my backup
/ -> to partition /new_root (/dev/ad1s1d) at the end this should be changed
/archive -> to partition /archive (/dev/ad1s1e)
The idea is to make use of the same swap partition, and of course if all
goes OK the partition / of the minimum system is lost when bootManager is
changed to boot on /new_root.
That is what I have in mind but I am not sure if it will work.
I am new to FreeBSD and I am more used to red hat, still I am putting some
effort to change that :)
Best regards and thanks once again
From: Kevin Kinsey [mailto:kdk at daleco.biz]
Sent: quarta-feira, 19 de Dezembro de 2007 16:58
To: Nuno Gonçalves
Cc: freebsd-questions at freebsd.org
Subject: Re: Bare Metal Recovery FreeBSD How To
Nuno Gonçalves wrote:
> I am trying to do a Bare Metal Recovery from a FreeBSD 6.0 system to a
> different Hardware.
> I have a backup from all partitions of the affected system so I am trying
> install a minimum FreeBSD 6.0 in a different hardware which I already have
> up and running.
What kind of backup? Is it a dump(8) file?
> I created a Swap Partition, a / partition where the minimum system is
> running, and a third partition /backup in which I will restore the
> through the network.
> Next step will be to change the boot manager and make it boot through
> Do you guys think this is doable?
> I Think I probably must recompile the kernel after the bare metal recovery
> because the hardware is different, still do you think it might work?
Did the kernel have a lot of customization? A GENERIC kernel should
boot on almost anything --- which is why "bare metal recovery" seems
a misnomer to me. If the hard disk survives, I simply stick it in
another box and rarely have any difficulties. If it doesn't, I do
a minimal install with the desired final slice/partition scheme on
the new HDD, and simply restore(8) over the top.
> What is your opinion on this? What should be the best approach ?
Well, I don't know your exact situation, but OOTOMH, the partitioning
scheme you mention seems like wasting a disk unless you want the
final system to have only /, swap, and /backup. Which could be
OK, I guess, but isn't the traditional BSD Right Way(tm).
Also, I'd consider installing a newer release than 6.0, and only
restoring the important stuff. Again, it depends on your situation.
You have been in Afghanistan, I perceive.
-- Sherlock Holmes, A Study in Scarlet
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