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(2010年08月19日 22:36), justino garcia wrote:
<blockquote
cite="mid:AANLkTikhjGt4OXOEmQr6Y3JromyBFs791HDpEKrYFdcy@mail.gmail.com"
type="cite">Why not use acronis for linux, or some imaging tool,
but make sure your current linux install has support for said raid
card.<br>
<br>
<div class="gmail_quote">On Thu, Aug 19, 2010 at 12:09 PM, Rashkae
<span dir="ltr"><<a moz-do-not-send="true"
href="mailto:ubuntu@tigershaunt.com">ubuntu@tigershaunt.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">
<div class="im">Mike A. Leonetti wrote:<br>
> I have a server now that has one drive and is not set
up on a RAID<br>
> using Ubuntu 8.04.<br>
><br>
> What I was going to do was boot with a Linux recovery
disc, create a<br>
> RAID1 manually with mdadm on two new drives, and then
copy all of the<br>
> data onto that then redo the boot partition.<br>
><br>
> My question is, when I reboot, will Ubuntu
automatically detect the RAID<br>
> for me or are there modules I have to install ahead of
time to make sure<br>
> the RAID gets detected? Also, would anybody else handle
the situation<br>
> differently :D.<br>
><br>
<br>
</div>
There is going to be one hurdle you'll need to get over.. I
forget the<br>
exact command I used to recover, but I'll give you the
overview.<br>
<br>
When raid array's are created, they are given a "hostname",
which, by<br>
default, will by the system hostname. By default, mdadm will
not<br>
auto-assemble raid arrays from a different hostname (to
prevent<br>
misunderstandings when hard drives are moved between different
systems.)<br>
Unfortunately, Ubuntu must assemble the raid arrays from the
Initrd<br>
system, which will probably not contain your hostname unless
you have<br>
customized it. I encountered this problem when I created the
new array<br>
from the existing system, I do not know if you will have this
issue when<br>
creating the array from the rescue cd.<br>
<br>
When I tried to reboot the system, it was unable to mount the
root<br>
filesystem. However, initrd dropped me to a busybox shell,
from which I<br>
was able to run mdadm with options that would assemble the
correct array<br>
*and* update the hostname of the array, (which I think is
simply "", ie.<br>
empty, in initrd.)<br>
<div>
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</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
Justin<br>
IT-TECH<br>
</blockquote>
To be honest I don't necessarily trust third party tools. And I'm
doing this all on-site so if it's something that fails that means
I'll just have to be there for longer.<br>
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