[Yum-devel] [PATCH 0/3] yum-utils: fs-snapshot support for LVM snapshots

[Seth Vidal]

On Wed, 3 Feb 2010, Mike Snitzer wrote:

> This patch series adds LVM snapshot support to yum-utils' fs-snapshot
> plugin.  LVM and DM now support "snapshot-merge" to allow changes stored
> in a snapshot LV to be merged back into the snapshot's origin LV.
>
> This LVM/DM support allows for "system rollback" of any filesystem that
> is built on LVM logical voluems that can be snapshotted.  Adding LVM
> snapshot support to the yum-utils fs-snapshot plugin extends the utility
> of this plugin beyond btrfs filesystems.  The fs-snapshot's support for
> LVM snapshots is disabled by default.
>
> I would like to get this support committed upstream at your earliest
> convenience.  As such I welcome any review/feedback on these changes.
>
> It is my hope that these changes can still make F13 as part of the
> "System Rollback" feature.  The existing project Feature page could be
> extended to include LVM snapshot information:
> http://fedoraproject.org/wiki/Features/SystemRollbackWithBtrfs
>
> [please cc me when replying as I'm not subscribed to yum-devel]



My only question about your changes is:  how well has this been tested?


Some feature considerations:
  1. timing out if a backup is taking too long
  2. perhaps extending/improving the information in yum-history to include 
which snapshot most immediately preceeded a yum transaction.


thanks,
-sv