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Full Discussion: Presenting current LUNs to new OS. RHEL 7, LVM
Top Forums UNIX for Advanced & Expert Users Presenting current LUNs to new OS. RHEL 7, LVM Post 303039390 by Neo on Wednesday 2nd of October 2019 11:07:58 PM
Old 10-03-2019
With the costs of disks so cheap these days, you are better to clone the disks and put them in a development / test server instead of removing the critical disks and testing them, with a plan to rush them back to the original server if something goes wrong.

This is especially true if you are talking about a critical production asset.

If you are talking about a "mom and pop" server which does not serve a critical business need, then you can certainly consider some "quick, disk shuffle" method, but not for a business-critical production server.

Just fully recreate the current computer with clones of the application and data disks in a your new OS build / server; and then cut over too it when all is tested and ready to go live (syncing data as necessary).
This User Gave Thanks to Neo For This Post:
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LEARN ABOUT CENTOS

subscription-manager-gui

subscription-manager-gui(8)				       Subscription Manager				       subscription-manager-gui(8)

NAME

       subscription-manager-gui - Launches the UI client of the Subscription Manager.

SYNOPSIS

       subscription-manager-gui [--register]

DESCRIPTION

       subscription-manager-gui  opens	the  local client tool to manage subscriptions and installed products on Red Hat Enterprise Linux systems.
       The same tasks that can be performed by invoking subscription-manager can be performed in the GUI, including  registering  systems  with  a
       subscription management service, applying and removing subscriptions, and viewing the subscription status of installed products.

       The Subscription Manager UI can also be opened by selecting the Red Hat Subscription Manager item from the Applications > System Tools menu
       in RHEL 5.x or the System > Administration menu in RHEL 6.x.

OPTIONS

       --register
	      If a system has not yet been registered, then the GUI registration page can be opened immediately, as the Subscription  Manager  GUI
	      comes up. This is only relevant for unregistered systems; if this is used after a system is registered, the option is ignored.

REFERENCES

       For  procedures	and  tasks that can be performed in the Subscription Manager UI, check the Gnome help files (by pressing <F1>) or refer to
       the RHEL Subscription  Management  Guide  at  <https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Subscription_Management/1.0/html/Sub-
       scription_Management_Guide/index.html>.

ASSOCIATED FILES

	      * /usr/sbin/subscription-manager-gui

	      * /usr/sbin/subscription-manager

	      * /etc/rhsm/rhsm.conf

BUGS

       This  client  is  part of Red Hat Subscription Manager. To file bugs against this client, go to https://bugzilla.redhat.com, and select Red
       Hat > Red Hat Enterprise Linux > subscription-manager.

AUTHORS

       Deon Lackey, <dlackey@redhat.com>.

COPYRIGHT

       Copyright (c) 2010-2012 Red Hat, Inc. This is licensed under the GNU General Public License, version 2 (GPLv2). A copy of this  license	is
       available at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.

version 1.2							 December 18, 2012				       subscription-manager-gui(8)
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