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Re: autovacuum launcher crash: assert in pgstat_count_io_op (IOOP_EXTEND on pg_database's VM) - Mailing list pgsql-hackers

From Michael Paquier
Subject Re: autovacuum launcher crash: assert in pgstat_count_io_op (IOOP_EXTEND on pg_database's VM)
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Msg-id ah0FxpCYeubtqX6A@paquier.xyz
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In response to autovacuum launcher crash: assert in pgstat_count_io_op (IOOP_EXTEND on pg_database's VM)  (Ewan Young <kdbase.hack@gmail.com>)
Responses Re: autovacuum launcher crash: assert in pgstat_count_io_op (IOOP_EXTEND on pg_database's VM)
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On Sun, May 31, 2026 at 12:36:45PM +0800, Ewan Young wrote:
> I haven't been able to boil this down to a clean standalone repro yet -- it
> seems to need the launcher to hit get_database_list() at the moment a
> pg_database page is prunable and the VM fork still has to grow -- but the
> path looks pretty clear from the stack.

My first suspicion would be something in the area of b46e1e54d078 and
some of the VM improvements.  Melanie?
--
Michael
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