[ale] LVM anyone?

[Jim Popovitch]

Thanks Danny, Keith for the detailed info.

-Jim P.

> -----Original Message-----
> From: ale-admin at ale.org [mailto:ale-admin at ale.org]On Behalf Of Danny Cox
> Sent: Monday, March 03, 2003 10:10 AM
> To: ALE Mailing List
> Subject: RE: [ale] LVM anyone?
> 
> 
> Jim,
> 
> On Mon, 2003-03-03 at 07:22, Jim Popovitch wrote:
> > Thanks Keith.  Do you know if LVM reqires any RAID components 
> (/dev/md?) or
> > other special devices in order to do mirroring.
> 
> 	As Keith noted, LVM only does striping, but isn't fault 
> tolerant.  It
> *does* offer one thing more, though: snapshots.  It's kinda crufty, and
> sometimes doesn't work properly with the fs (some, like XFS have a
> free/thaw API that's useful in this case).
> 
> 	The idea is: take a snapshot, which is an fs "frozen in 
> time".  Mount
> that read-only, and take a backup of it.  Then discard the snapshot. 
> There ya go, a backup without files changing underneath, and the regular
> folks can continue to work (or at least surf).
> 
> -- 
> kernel, n.: A part of an operating system that preserves the
> medieval traditions of sorcery and black art.
> 
> Danny
> 
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