Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1uA1qx-009TVp-Uz for pgsql-hackers@arkaria.postgresql.org; Wed, 30 Apr 2025 07:27:36 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.94.2) (envelope-from ) id 1uA1qv-00C2uN-SC for pgsql-hackers@arkaria.postgresql.org; Wed, 30 Apr 2025 07:27:34 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1uA1qu-00C2uF-RC for pgsql-hackers@lists.postgresql.org; Wed, 30 Apr 2025 07:27:34 +0000 Received: from fout-b5-smtp.messagingengine.com ([202.12.124.148]) by magus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1uA1qs-000Jnx-2O for pgsql-hackers@lists.postgresql.org; Wed, 30 Apr 2025 07:27:33 +0000 Received: from phl-compute-04.internal (phl-compute-04.phl.internal [10.202.2.44]) by mailfout.stl.internal (Postfix) with ESMTP id B1C6F114022E; Wed, 30 Apr 2025 03:27:27 -0400 (EDT) Received: from phl-mailfrontend-02 ([10.202.2.163]) by phl-compute-04.internal (MEProxy); Wed, 30 Apr 2025 03:27:27 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=paquier.xyz; h= cc:cc:content-type:content-type:date:date:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:subject :subject:to:to; s=fm3; t=1745998047; x=1746084447; bh=dPj8bWEFY7 c8s2cG1MffHH/M1+XKhqn/5ye3AT5n89U=; b=CGQWgPVp0r2y+59vLOpP97kLRe rwBfiHYZC815NSWeDNW7r5XLPkoNrE5u9GkGE8IjKAgSyK2c8m1eGw4YCX0ah0OP 2XQ60jyo+OEZBVh+HHWkKOfc4z1h5bhSq1IkP0uyOLT8q11nUGWffqjkB5HKjEgO mQknSWbmMygi0oRcKAxGQCklrdoo381+VRUN61UKdsbtPfZdDImp7r6FQ320o2+f iZKXufLT3FFIHmqRXBGpNEKUN8fAJfTSUimF0RaAJVR+2BqJzLgOxpPJgwurAuLk 82YQoETCGZbKMgQHfG3plktKxv8kwvNooOFeObQ9fj4O3TCsvVAJQBqpkLbw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-type:content-type:date:date :feedback-id:feedback-id:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:subject:subject:to :to:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; t= 1745998047; x=1746084447; bh=dPj8bWEFY7c8s2cG1MffHH/M1+XKhqn/5ye 3AT5n89U=; b=QhF889V0E4i6rvyprnOWY17uh5tz6grxhXxk+fjD5nLZZypNImk P9rM8Dq5rks2V5ahzNB2ffuvKQWEYV+2LPTz77YOaHBAcfMerupyxKJV9YczP2ym eC69a9Yqs+7LDjPARQjuYmiefmCxKRQH4C6PeH4aoGojpYJmcE6+SgslZ6pJJ5Hi yEh3IO7kU4pmickcjOJG/Q5J4dhFtd0ysjZXhq1yFXn1CvXJi7YvNNkb/cVl+Gz7 NGEzcvWENnPM5GMr+DQeZrj4ZfVv2lvJCIymNHJm0afqdhWsQ9inOxo0SM/wnL95 44twZJd1IzZoD34hmDQv7pvB5rPKXAAts+g== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgddvieeitdelucetufdoteggodetrf dotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdggtfgfnhhsuhgsshgtrhhisggv pdfurfetoffkrfgpnffqhgenuceurghilhhouhhtmecufedttdenucesvcftvggtihhpih gvnhhtshculddquddttddmnegfrhhlucfvnfffucdljedtmdenucfjughrpeffhffvvefu kfhfgggtuggjsehgtderredttddvnecuhfhrohhmpefoihgthhgrvghlucfrrghquhhivg hruceomhhitghhrggvlhesphgrqhhuihgvrhdrgiihiieqnecuggftrfgrthhtvghrnhep teelieefudffhffhtdetleeggeegfffhkeeuveetiefgudduvedutefggeeivdejnecuve hluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomhepmhhitghhrggv lhesphgrqhhuihgvrhdrgiihiidpnhgspghrtghpthhtohepfedpmhhouggvpehsmhhtph houhhtpdhrtghpthhtohepgiegmhhmmheshigrnhguvgigqdhtvggrmhdrrhhupdhrtghp thhtohepphhgshhqlhdqhhgrtghkvghrsheslhhishhtshdrphhoshhtghhrvghsqhhlrd horhhgpdhrtghpthhtohepmhdrmhgvlhhnihhkohhvsehpohhsthhgrhgvshhprhhordhr uh X-ME-Proxy: Feedback-ID: i0fe9450f:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 30 Apr 2025 03:27:25 -0400 (EDT) Date: Wed, 30 Apr 2025 16:27:11 +0900 From: Michael Paquier To: Andrey Borodin Cc: Postgres hackers , "Maksim.Melnikov" Subject: Re: Persist injection points across server restarts Message-ID: References: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="h2ZpNFF1I8e0KWps" Content-Disposition: inline In-Reply-To: List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk --h2ZpNFF1I8e0KWps Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Apr 30, 2025 at 10:52:51AM +0500, Andrey Borodin wrote: > Did you consider custom resource manager to WAL-log injection > points? This way we do not need to flush them explicitly, they > always will be persistent. WAL-logging would not work in the case I've faced, because we need a point much earlier than the startup process beginning any redo activity, so I don't think that this would be useful. -- Michael --h2ZpNFF1I8e0KWps Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEG72nH6vTowiyblFKnvQgOdbyQH0FAmgR0M8ACgkQnvQgOdby QH1xjxAAjyOZ0SuMNfnl8qOLDLSlahVQRn6NA7YT41T4hkP7IQxWQarhehinv+6X naMQsZVJDXnL7DHfU4zdQ6kj2qLETDTVDDyq0OZfNGGiytc14sp7gLyL+seRJJRb hP37/VZMPSIiZ0bnpJmnQqfpnxb4M4xw30jXkNqvnBRRbh7wtAqZ2idz4T1furRm kjy+LZ4m5oE3T81qO3uF+XOElvSF10reQVtX3fKNvmLSyU9oFjElgf1eBaI2suP7 smJU0BYsR4ns9vShBGDdNUWUN6qHTc659foqLZMsq/L/PFQZCWwO7SpUeeljnF8Z ICaHRzSZvery4N+UZ5LqMByJ4283VEvNeHWlmlmhQDNT3Dt+kd2ul1QNuiB3cmHL 1ECODt4BcnaA+jx7Y0Ht+qnNh7TDSxarzUZvjaUTVpvjLd3o19deDLkFDO431J5G g+ubu6H43YTjQrDVl0wglTzr6RIh0ysaFPGDnY/ygsOYbhASpy9mSKiFAinU/0zg nV1DpTpziJER0TYg0Qey5CF9aGvmjHC1xWhXN8oVQrVqT04WseDQsW0NMelrXFLw aRdz8ng/Ofu6wOm5m++yZeoxQ3M514U0Qmj+fDH9PWDQG5tziUlu0rlx9LaW0QLt LYUIw2JQ/+W7ENm5yCFso6NsbIpnhWkp77MDdQ3GJEzmfQM0ABk= =Gn+J -----END PGP SIGNATURE----- --h2ZpNFF1I8e0KWps--