Prototype for the time machine similar solution as you noted in h-u-b whiteboard.

[Ulrik Mikaelsson]

Don't know if I've totally missed something, but for local backups, isn't it
possible to use the snapshotting feature of LVM? Should be quite fast, I
think?

Regards
/ Ulrik

On 11/15/06, Sivan Greenberg <sivan at ubuntu.com> wrote:
>
> Hi Robert!
>
> (CCing my two backup team colleagues for review and feedback, and to
> -devel to raise attention and feedback)
>
> In response to:
>
> "Robert Carr 2006-11-15: Any thoughts on a transparent version based
> backup? Through the backup interface allow users to specify directories,
> and use inotify to watch files in the directory for modification and
> back them up to a hidden file with timestamp appended on modify. Also
> create an interface where users can easily "scroll back a day" and see
> what the folder looked like then. So far I have completed (as a proof of
> concept more than anything) a python based implementation of the
> backend, but no GUI components. Additionally allow the backup files to
> be stored on external medium such as a USB flash drive. This might merit
> a separate specification, but I thought I would check for views here
> before creating a new one. Similar in idea to Apples Time Machine in OSX
> Leopard"
>
>   This is indeed an interesting and useful application of inotify.
> Hhaving something like this for feisty or more probably feisty+1 would
> rock. Since simple off local backups were our first prio with regards to
> backups at all, home user backup resulted with the feature set as
> depicted on the specification page.
>
> Have you given thought to how to make sure user's HD doesn't get filled
> with all the data that we back up? I suggest backup only the part of the
> file that was changed, there are couple of ways to do that already.
>
>   I do see your idea as a part of a full featured, flexible and useful
> data protection and recovery suite. They can be listed according to
> urgency and severity of damage we are trying to recover from:
> 1) Locally isolated file damage, common use case being accidentally
> overwriting a system conffile or loosing small home content - this is
> where you're suggestions fills the need.
> 2) Large loss of personal settings and home folder content, for example
> an HD crash or an accidental (or malicious rm -rf) erase - hubackup is
> the answer here.
> 3) Large scale system area damage - for example loss of the / partition
> when you have your home on a separate one - hubackup-ng should be the
> solution here, allowing to restore system files and system settings
> including but not limited to databases physical storage as well as using
> something a generalisation of something like [1] to automatically
> request similar programs to close and flush their internal DBs in order
> to avoid back up of inconsistent content.
> 4) Complete disaster recovery, combining (2)+(3) adding a resuce from
> boot feature to the backup program along side shipping restore
> functionalities OOTB in a desktop or installation CD.
>
>   Cheers,
>
> Sivan
>
> (P.S. Please use either the features system in LP or use a development
> oriented mailing list to discuss these, the whiteboard seems not the
> best place for this)
>
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