Re: Making ostree robust wrt concurrent use

[Alexander Larsson <alexl redhat com>]

On fre, 2015-12-11 at 11:23 +0100, Alexander Larsson wrote:
>  
> 3) During the operation we naturally build up a topological sorting
> of
>    all the objects involved in the operation. For instance, during a
>    pull we do a recursive discovery of all objects that are not
>    available in the local repo. We save this order, and then use the
>    reverse order when moving non-leaf (DIR_META & COMMIT) objects
> into
>    the repo, doing an fsync of the object directories whenever we
> leave
>    all children of some object have been moved.

Actually, this doesn't work because if static deltas are in use we just
always trust that they have all the objects (or they are listed as
fallbacks), so we never build up the topological sort. I guess we need
to manually do this at the end of the transaction.

-- 
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 Alexander Larsson                                            Red Hat, Inc 
       alexl redhat com            alexander larsson gmail com 
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