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 4.96) (envelope-from ) id 1vgHYG-00AMOy-2n for pgsql-hackers@arkaria.postgresql.org; Thu, 15 Jan 2026 07:13:54 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1vgHYF-00FCfF-2r for pgsql-hackers@arkaria.postgresql.org; Thu, 15 Jan 2026 07:13:52 +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 4.96) (envelope-from ) id 1vgHYF-00FCez-0i for pgsql-hackers@lists.postgresql.org; Thu, 15 Jan 2026 07:13:51 +0000 Received: from mail3-166.sinamail.sina.com.cn ([202.108.3.166]) by magus.postgresql.org with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vgHYB-000ZYt-0h for pgsql-hackers@lists.postgresql.org; Thu, 15 Jan 2026 07:13:50 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sina.cn; s=201208; t=1768461227; bh=W4XqknYnq5Brr1m2l/D+7DnhlrJfp99JWk3rQjTagdQ=; h=Date:From:Subject:Message-ID; b=S0ueyHI9JABKD4WApnfltpDtgFCc1RG0RK0O7BULi7pdsne0RNRG1IS3DYiH68ohg jj1U1jT5wTmir1fdoawvH24JfsVqti/Z+vapHWBhlS+VEjK4OZ9Vz2O9M9H1srtqJ8 TUIIFNfiv7cJTUopTFO7ZnStGGURr+c5ng9cclhM= X-SMAIL-HELO: deepin Received: from unknown (HELO deepin)([112.229.29.96]) by sina.cn (10.54.253.31) with ESMTP id 6968939900003A94; Thu, 15 Jan 2026 15:13:42 +0800 (CST) X-Sender: lchch1990@sina.cn X-Auth-ID: lchch1990@sina.cn Authentication-Results: sina.cn; spf=none smtp.mailfrom=lchch1990@sina.cn; dkim=none header.i=none; dmarc=none action=none header.from=lchch1990@sina.cn X-SMAIL-MID: 1079816816240 X-SMAIL-UIID: E447D5F5199841899D2CBFEDC08876D1-20260115-151342-1 Date: Thu, 15 Jan 2026 15:13:42 +0800 From: "lchch1990@sina.cn" To: "Laurenz Albe" , pgsql-hackers Subject: Re: Can we change pg_rewind used without wal_log_hints and data_checksums References: <6968473b747509.85551803.6d444149@m0.mail.sina.com.cn>, <91c1ebd19d2fa742627bcaca86950250fefa6abd.camel@cybertec.at> X-Priority: 3 X-Has-Attach: no X-Mailer: Foxmail 7.2.25.375[cn] Mime-Version: 1.0 Message-ID: <2026011515132967599611@sina.cn> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk T24gVGh1LCAyMDI2LTAxLTE1IGF0IDEzOjQ3ICswODAwLCBsYXVyZW56LmFsYmVAY3liZXJ0ZWMu YXQgd3JvdGU6Cj4gTm93IGlmIHdlIHJ1biBwZ19yZXdpbmQgb24gc2VydmVyIEEsIGl0IGV4YW1p bmVzIHRoZSBsb2NhbCBXQUwgdG8gZmluZCBhbGwgdGhlIGJsb2Nrcwo+IHRoYXQgd2VyZSBtb2Rp ZmllZCBhZnRlciB0aGUgbGFzdCBjb21tb24gY2hlY2twb2ludCAod2hpY2ggaGFwcGVuZWQgaW4g c3RlcCAzIGFib3ZlKS4KPiBJZiBuZWl0aGVyIHdhbF9sb2dfaGludHMgPSBvbiBub3IgY2hlY2tz dW1zIGFyZSBlbmFibGVkICh3aGljaCBlZmZlY3RpdmVseSBmb3JjZXMKPiBXQUwtbG9nZ2luZyBo aW50IGJpdCBjaGFuZ2VzKSwgdGhlcmUgaXMgbm8gdHJhY2sgb2Ygc3RlcCA1IGluIHRoZSBXQUws IGFuZCBwZ19yZXdpbmQKPiBmYWlscyB0byBjb3B5IHRoYXQgYmxvY2sgZnJvbSBzZXJ2ZXIgQi7C oCBUaGUgY29uc2VxdWVuY2UgaXMgdGhhdCBhZnRlciBwZ19yZXdpbmQsIHRoZQo+IHJvdyBpcyAq c3RpbGwqIHZpc2libGUgb24gc2VydmVyIEEgYmVjYXVzZSBvZiB0aGUgaGludCBiaXRzLsKgIFRo YXQgaXMgZGF0YSBjb3JydXB0aW9uLgo+IFRoZXJlZm9yZSwgdGhlIHJlcXVpcmVtZW50IGNhbm5v dCBiZSByZWxheGVkLgoKClllcyBJIGtub3duIHRoZSBzdGVwIGFuZCBJIGhhdmUgY2hlY2sgdGhl IG1haWwgbGluay4gQXMgZGVzY3JpYmVkIGluIHRoZSB0b3AgbWFpbCB3ZSBjYW4KZmluZCBzb21l IHdheSB0byBzb2x2ZSB0aGUgcHJvYmxlbSBzbyB0aGF0IHBnX3Jld2luZCBjYW4gcnVuIHdpdGhv dXQgd2FsX2xvZ19oaW50cyBhbmQKZGF0YV9jaGVja3N1bXMuIAoKQ3VycmVudGx5IHBnX3Jld2lu ZCBzZWFyY2ggd2FsIHN0YXJ0IGF0IGNoZWNrcG9pbnQgbHNuIG9yIHJlZG8gbHNuLCBJIG1lYW4g dG8gc2VhcmNoIG1vcmUKd2FsIHRvIGNvdmVyIHdob2xlIHJlbGVhdGVkIHRyYW5zYWN0aW9ucyBz byBhbnkgcmVsZWF0ZWQgcGFnZXMgd2l0aCBjb3B5ZWQsIGFuZCB3ZSBuZXZlcgp3YXJyaWVkIGFi b3V0IGhpbnQgYml0cyBpc3N1ZS4gCgpBbnl3YXksIEkgd2lzaCB0aGlzIG1haWwgaW4gb3JkZXIu CgoKCi0tLS0KQmVzdCBSZWdhcmRzLAoKTW92ZWFkIExpCgoKCsKgCgoK