On Wed, Mar 6, 2019 at 4:14 PM Jerry Jelinek <jerry.jeli...@joyent.com> wrote:
> > It sounds like everyone is in agreement that I should get rid of the > single COW GUC tunable and provide two different tunables instead. I will > update the patch to go back to the original name (wal_recycle) for the > original WAL recycling behavior. The default value of that will be true to > provide the existing behavior. This matches my original proposal from last > year. I will add a new tunable (wal_init_zero) which will control the > zero-fill behavior for the WAL file. Again, the default value will be true > and provide the existing behavior. Both of these could (should) be set to > false for a COW filesystem like ZFS. > > If anyone objects to this new approach, let me know, otherwise I'll start > preparing an updated patch. > I have attached a new version of the patch that implements the changes we've discussed over the past couple of days. Let me know if there are any comments or suggestions. Thanks, Jerry
0001-wal_recycle-and-wal_init_zero.patch
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