Re: Back-patch of: avoid multiple hard links to same WAL file after a crash

On Tue, Mar 11, 2025 at 06:23:15PM -0700, Noah Misch wrote:
> On Wed, Mar 12, 2025 at 09:46:27AM +0900, Michael Paquier wrote:
> > On Tue, Mar 11, 2025 at 01:57:49PM -0700, Noah Misch wrote:
> > > Thanks for crafting back-branch versions.  I've queued a task to confirm I get
> > > the same result.
> > 
> > Thanks for that.  That helps a lot.
> 
> I'll let you know when I get there.

Your back-patches are correct.  Thanks.

> > > There's a test case I'll polish, too.
> > 
> > Are you considering the addition of a TAP test in 17~ based on a wait
> > injection point in the checkpointer coupled with a check of the server
> > logs to see if we see the error patterns you've spotted?
> 
> No, nothing involving injection points or otherwise version-specific.

Here it is.  Making it fail three times took looping 1383s, 5841s, and 2594s.
Hence, it couldn't be expected to catch the regression before commit, but it
would have made sufficient buildfarm and CI noise in the day after commit.