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On 11/17/2009 03:56 PM, Chris Ball wrote:
> Hi,
>
> > I'm not sure how much of this can/should be automated.
>
> Sorry, not quite following -- what is the caution around automatically
> creating a new snapshot before each yum transaction? Why shouldn't it
> be automated?
>
I somewhat read the initial suggestion as trying to implement transactional
behavior via snapshot. Just creating one shouldn't hurt.
> > This also keeps us out of the dangerous territory that comes with
> > using non-ubiquitous FS features (your boot is on ext3, your root
> > is on btrfs, your etc is on xfs and your usr is on jfs. What do
> > you snapshot and how?)
>
> This feature would snapshot the btrfs / only, but that doesn't matter,
> because snapshots don't do anything until the user chooses to initiate
> a rollback. The user who chooses a btrfs / and a jfs /usr knows what
> happens when they rollback only the btrfs filesystem. (And we can
> print a warning to make sure of that if we decide it's necessary.)
>
We've now created a useless and slightly dangerous object though. Regardless of
the competence of the user who's problem that is, better to avoid it if we can.
> Thanks,
>
> - Chris.
--CJD
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