[Discuss] lvm snapshot cloning

[markw at mohawksoft.com (markw at mohawksoft.com)]

> On Tue, Oct 25, 2011 at 11:20 PM,  <markw at mohawksoft.com> wrote:
>
>> Obviously, there are pros and cons to various approaches. You approach
>> is
>> only faster if you know that the file in questions was recently
>> modified.
>> If that is the case, you lucked out. What happens if the source of the
>> calculations, which is also needed, hasn't been modified in some time?
>
>
> Are you serious? If the source of the calculations hasn't been modified
> in some time, then what you do is restore it from the backups. Same as
> if it was modified recently.

I was thinking that it, if you are doing an incremental backup, it may not
be present on the current backup medium, and then you'd have to search
what ever catalogue system you have to find where it is.

>
> The older files weren't backed up recently because they hadn't changed.
> They didn't get erased from the backups, so they're still available for
> restoration, just like the recently changed files.
>
> Did you think that all backups older then one day were somehow erased?

Typically, you ship some backups off-site to ensure recovery.

>
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> John Abreau / Executive Director, Boston Linux & Unix
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