Re: Re: transaction lost when delete clog file after normal shutdown

From: 章晨曦(at)易景科技 <zhangchenxi(at)halodbtech(dot)com>
To: Daniel Gustafsson <daniel(at)yesql(dot)se>
Cc: Andrey Borodin <x4mmm(at)yandex-team(dot)ru>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Junwang Zhao <zhjwpku(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Re: transaction lost when delete clog file after normal shutdown
Date: 2024-12-23 11:01:01
Message-ID: tencent_58C8C4754784AD193BBB506F@qq.com
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Yes, of course we can solve this by restoring from backup.&nbsp;
But if the database volumn is large, say, 100TB or more, the cost
is really too expensive just because the tiny clog file corrupt.

Regards,
Jet

Daniel Gustafsson<daniel(at)yesql(dot)se&gt;&nbsp;在 2024年12月23日 周一 18:43 写道:

&gt; On 23 Dec 2024, at 11:36, 章晨曦(at)易景科技 <zhangchenxi(at)halodbtech(dot)com&gt; wrote:

&gt; Human errors, disk errors, or even cosmic rays ...

That sounds exactly like the scenario which backups are made for.&nbsp; In all these
error cases there is no way of being sure that no other part of the system has
been compromised, so you restore from backup with WAL replay.

--
Daniel Gustafsson

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