On Mon, Jan 22, 2024 at 01:24:54PM -0800, Andres Freund wrote:
> On 2024-01-22 15:19:36 -0600, Nathan Bossart wrote:
>> I think this is because the autoprewarm state was moved to a DSM segment,
>> and DSM segments are detached before the on_shmem_exit callbacks are called
>> during process exit.  Moving apw_detach_shmem to the before_shmem_exit list
>> seems to resolve the crashes.
> 
> That seems plausible. Would still be nice to have at least this test ensure
> that the shutdown code works. Perhaps just a check of the control file after
> shutdown, ensuring that the state is "shutdowned" vs crashed?

I'll give that a try.  I'll also expand the comment above the
before_shmem_exit() call.

-- 
Nathan Bossart
Amazon Web Services: https://aws.amazon.com


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