[ovs-dev] strong empheral references?
Marcelo E. Magallon
marcelo.magallon at hpe.com
Mon Dec 19 15:15:54 UTC 2016
On Thu, Dec 15, 2016 at 03:14:47PM -0800, Ben Pfaff wrote:
> This was implemented because it led to databases that couldn't be read
> from disk upon restart. The code comment gives more of the story:
>
> + if (ovsdb_base_type_is_strong_ref(base) && !refTable->is_root) {
> + /* We cannot allow a strong reference to a non-root table to be
> + * ephemeral: if it is the only reference to a row, then replaying the
> + * database log from disk will cause the referenced row to be deleted,
> + * even though it did exist in memory. If there are references to that
> + * row later in the log (to modify it, to delete it, or just to point
> + * to it), then this will yield a transaction error. */
> + column->persistent = true;
> + }
Aha...
Thanks Ben!
Marcelo
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