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From: Scott Ribe <scott_ribe@elevated-dev.com>
To: Mariel Cherkassky <mariel.cherkassky@gmail.com>
Cc: Bruce Momjian <bruce@momjian.us>
Cc: pgsql-admin@lists.postgresql.org
Subject: Re: old cluster does not use data checksums but the new one does
Date: Sun, 5 May 2019 14:44:30 -0600
Message-ID: <BC403CF3-6ED1-48E5-AA2A-6EDFD6B4FF47@elevated-dev.com> (raw)
In-Reply-To: <CA+t6e1mP0Qzkw6HpoqeU6WN4_SbG0w=9MrZf3VhG9eMXBst2aw@mail.gmail.com>
References: <CA+t6e1mCtZsNsg2HVZHrS5ZUiQExj-=KRhC=+P61LttUvdKHyQ@mail.gmail.com>
	<20190505120454.2zgsqcudz4eqquvy@momjian.us>
	<CA+t6e1kE5ix3VHB_3RZfp=shZof_edgUk1sjbGxMd7eY81BmMA@mail.gmail.com>
	<FA67AC22-5E1D-4A1A-99F6-C4D835FF0D37@elevated-dev.com>
	<CA+t6e1mP0Qzkw6HpoqeU6WN4_SbG0w=9MrZf3VhG9eMXBst2aw@mail.gmail.com>

> On May 5, 2019, at 2:42 PM, Mariel Cherkassky <mariel.cherkassky@gmail.com> wrote:
> 
> in aspect of upgrade, what will be faster, pg_upgrade or dump and restore each db in the cluster ?

pg_upgrade is faster, potentially *MUCH* faster, but it does not allow you to change anything about the on-disk data structure, and storage of checksums is such a change.







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  Subject: Re: old cluster does not use data checksums but the new one does
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