Hi, Am Dienstag, den 01.09.2020, 15:29 +0200 schrieb Daniel Gustafsson: > > On 1 Sep 2020, at 15:13, Michael Banck <michael.ba...@credativ.de> wrote: > > the pg_checksums docs mention that "When enabling checksums, every file > > in the cluster is rewritten". > > > > From IRC discussions, "rewritten" seems ambiguous, it could mean that a > > second copy of the file is written and then switched over, implying > > increased storage demand during the operation. > > Makes sense, I can see that confusion. > > > So maybe "rewritten in-place" is better, as per the attached? > > Isn't "modified in-place" a more accurate description of the process?
AIUI we do rewrite the whole file (block by block, after updating the page header with the checksum), so yeah, I though about using modified instead but then decided rewritten is pretty (or even more) accurate. Michael -- Michael Banck Projektleiter / Senior Berater Tel.: +49 2166 9901-171 Fax: +49 2166 9901-100 Email: michael.ba...@credativ.de credativ GmbH, HRB Mönchengladbach 12080 USt-ID-Nummer: DE204566209 Trompeterallee 108, 41189 Mönchengladbach Geschäftsführung: Dr. Michael Meskes, Jörg Folz, Sascha Heuer Unser Umgang mit personenbezogenen Daten unterliegt folgenden Bestimmungen: https://www.credativ.de/datenschutz
