| From: | Josh Berkus <josh(at)agliodbs(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
| Cc: | Stephen Frost <sfrost(at)snowman(dot)net>, Andres Freund <andres(at)anarazel(dot)de>, Christoph Berg <myon(at)debian(dot)org>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>, Robert Haas <robertmhaas(at)gmail(dot)com> |
| Subject: | Re: fsync-pgdata-on-recovery tries to write to more files than previously |
| Date: | 2015-05-25 20:41:10 |
| Message-ID: | 556388E6.6050300@agliodbs.com |
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| Lists: | pgsql-hackers |
On 05/25/2015 01:21 PM, Tom Lane wrote:
> And from the other direction, where exactly is it written that
> distros/users will only create problematic files at the top level of
> $PGDATA? I'd have zero confidence in such an assertion applied to
> tablespace directories, for sure.
Yes, absolutely.
For example: Cstore_FDW now puts its files in a subdirectory of the
tablespace directory, which for a really large cstore table, the user
will want to symlink somewhere else, or might create as a mount. Such a
user might then, for example, annotate this with a README.txt which
happens to be root/root perms.
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com
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