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How to upgrade LVM1 to LVM2 on RHEL?

I want to upgrade LVM1 to LVM2 without data loose. Is there a way to do so without risk of data corruption.  This LVM1 resides in an always-runing server powered by Redhat Enterprise linux 3 (Taroon update 4) with kernel 2.4.21-27.0.2.Elsmp on i686.
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you should make sure you have a full backup before you do any upgrade.

According to Heinz it should be OK to upgrade 1 to 2

You may need the newer kernel however which will require downtime.
Nasser_01Author Commented:
I need more details please. The link is not showing. Also what is the best practice to update the kernel from 2.4 to 2.6 .
Thanks a lot for response.
Start reading from here...

Links eventually round to here;

Have you made plans for backup?
cjl7freelance for hireCommented:
Best practises for upgrade = backup system, re-install RHEL5, restore applikation, test - verify - back to prod.

Red Hat normally doesn't recommend upgrade of systems.

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