[linux-lvm] Snapshots and disk re-use

Stuart D. Gathman stuart at bmsi.com
Wed Feb 23 19:24:56 UTC 2011

On Wed, 23 Feb 2011, Jonathan Tripathy wrote:

> > Actually, if you never (or rarely) write to the origin, lots of snapshots
> > should be fine.
> > But every write to the origin will first copy the
> > original origin data to every snapshot.
> >
> Why would origin data be copied over to the snapshot after the snapshot has
> been created? Surely the point of a snapshot is to have "frozen" data?

That is how the data is "frozen" despite being written to on the origin.

	      Stuart D. Gathman <stuart at bmsi.com>
    Business Management Systems Inc.  Phone: 703 591-0911 Fax: 703 591-6154
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