Re: pg_basebackup ignores the existing data directory permissions

From: Michael Paquier <michael(at)paquier(dot)xyz>
To: Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>
Cc: kommi(dot)haribabu(at)gmail(dot)com, magnus(at)hagander(dot)net, pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: Re: pg_basebackup ignores the existing data directory permissions
Date: 2019-02-18 04:05:05
Message-ID: 20190218040505.GJ15532@paquier.xyz
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On Fri, Feb 15, 2019 at 09:24:15AM +0900, Kyotaro HORIGUCHI wrote:
> I disagree that pg_basebackup rejects directories other than
> specific permissions, since it is just a binary backup tool,
> which is not exclusive to making replication-standby. It ought to
> be runnable and actually runnable by any OS users even by root,
> for who postgres rejects to start. As mentioned upthread, it is
> safe-side failure that server rejects to run on it.

Perhaps I do not fully understand your argument here. We do not
discuss about making pg_basebackup fail in any way, just of having it
adjust the umask of the target path so as users can simplify startups
using the generated base backup.
--
Michael

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