[ale] Clone live system?

[Jim Kinney]

Rhel 6. They like living on the bleeding edge


of no security updates. 

On July 17, 2021 9:53:37 AM EDT, Raj Wurttemberg via Ale <ale at ale.org> wrote:
>Now that COVID is slowly going away, some of our customers are now
>looking
>to do some OS upgrades, mostly RHEL 6 to RHEL 8 and SuSE 12 to SuSE 15.
> We
>have been using Relax and Recover (ReaR) (
>https://access.redhat.com/solutions/2115051) which dumps the live
>system to
>a bootable ISO. No outage is required.
>
>We take the ISO, boot it on a temp server, upgrade the OS there and on
>upgrade day, reverse the process on the day that we get an outage from
>the
>customer. The ReaR process works ok, but if any of the file systems are
>separated like /usr, or, /var, etc...  like you would normally find on
>a
>system, ReaR runs into difficulties.
>
>I did some Google-ing for other tools that can create a live clone of a
>server. I did find two tools that look promising...
>
>- doClone : http://doclone.nongnu.org/
>- MondoRescue : http://www.mondorescue.org/
>
>Besides 'dd' I was curious what live cloning software you all have
>tried.
>
>/Raj W.

-- 
Computers amplify human error
Super computers are really cool
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