[CentOS] HowTo copy a Logical Volume to another LV

Paul subsolar at subsolar.com
Sat Oct 15 01:56:09 UTC 2005

On Fri, 2005-10-14 at 15:47 -0500, Aleksandar Milivojevic wrote:
> Hm, maybe using that new mirroring feature in LVM.  Mirror the thing, let it
> sync, and than break the mirror.  You can have the thing online and available
> while syncing, and just unmount it for the short period of time when breaking
> the mirror (to avoid data corruption).  Just an idea to investigate, 
> don't know
> if it is actually doable (haven't yet had time to play with LVM 
> mirroring, just
> saw it in list of new features).

Don't know about doing this under Linux, but it's one of the recommended
solutions for backing up a system live running HP-UX.  Though the people
that I've heard doing this usually setup a three way mirror ... a bit
wasteful of disk space, but 100% uptime.


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