Обсуждение: [GENERAL] pg_restore load data

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[GENERAL] pg_restore load data

От
Ron Johnson
Дата:
Hi,

v9.2.7  (Yes, I know, it's old.  Nothing I can do about it.)

During a "whole database" restore using pg_restore of a custom dump, when is 
the data actually loaded?  I've looked in the list output and don't see any 
"load" statements.

Thanks

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Re: [GENERAL] pg_restore load data

От
bricklen
Дата:

On Thu, Nov 16, 2017 at 1:07 PM, Ron Johnson <ron.l.johnson@cox.net> wrote:
v9.2.7  (Yes, I know, it's old.  Nothing I can do about it.)

During a "whole database" restore using pg_restore of a custom dump, when is the data actually loaded?  I've looked in the list output and don't see any "load" statements.

Look for COPY lines, that's how the data is restored.

Re: [GENERAL] pg_restore load data

От
melvin6925
Дата:
The command is COPY, not load.



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-------- Original message --------
From: Ron Johnson <ron.l.johnson@cox.net>
Date: 11/16/17 16:07 (GMT-05:00)
To: pgsql-general@postgresql.org
Subject: [GENERAL] pg_restore load data

Hi,

v9.2.7  (Yes, I know, it's old.  Nothing I can do about it.)

During a "whole database" restore using pg_restore of a custom dump, when is
the data actually loaded?  I've looked in the list output and don't see any
"load" statements.

Thanks

--
World Peace Through Nuclear Pacification



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Re: [GENERAL] pg_restore load data

От
Ron Johnson
Дата:
On 11/16/2017 03:13 PM, bricklen wrote:

On Thu, Nov 16, 2017 at 1:07 PM, Ron Johnson <ron.l.johnson@cox.net> wrote:
v9.2.7  (Yes, I know, it's old.  Nothing I can do about it.)

During a "whole database" restore using pg_restore of a custom dump, when is the data actually loaded?  I've looked in the list output and don't see any "load" statements.

Look for COPY lines, that's how the data is restored.

$ pg_restore -l CDSHA01.dump > CDSHA01.txt
$ grep --color -i copy CDSHA01.txt

$ echo $?
1

There are lots of "restoring data", though.  I should have thought to grep for that.

One thing that puzzles me is how fast the tables (even large ones) loaded compared to how slow the pg_dump -Fc was.  Granted, I'm running -j4 but still, these were some really large, poorly compressible tables (the dump file was about as big as du -mc data/base).

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