[linux-lvm] Can read/write snapshots be modified while the original is being modied
Stuart D. Gathman
stuart at bmsi.com
Tue Mar 23 01:44:36 UTC 2010
On Mon, 22 Mar 2010, Stuart D. Gathman wrote:
> On Mon, 22 Mar 2010, Hyatt, Gilbert wrote:
> > We are tried to do patch testing.
> > We want to snapshot an OS, continue to run on the original OS, while
> > installing patches and testing the snapshot.
> I do that all the time. It works fine.
A word to the wise. Be sure and disable stuff like EDI or web service clients
that might modify other production machines. I forgot to do that once.
Took the longest time to figure out why many of our production customs entry
responses were disappearing - as if someone had our password and was stealing
Another approach I use is to restore a backup to a test VM. This tests
the backup as well. This is especially comforting when you use a
remote backup server to run the test VM.
Stuart D. Gathman <stuart at bmsi.com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
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