Re: [PATCH] Relocation of tablespaces in pg_basebackup

From: Gabriele Bartolini <gabriele(dot)bartolini(at)2ndQuadrant(dot)it>
To: Steeve Lennmark <steevel(at)handeldsbanken(dot)se>, Magnus Hagander <magnus(at)hagander(dot)net>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [PATCH] Relocation of tablespaces in pg_basebackup
Date: 2014-01-09 21:29:53
Message-ID: 52CF14D1.2060403@2ndQuadrant.it
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Hi Steeve,
> Il 09/01/14 22:10, Steeve Lennmark ha scritto:
>
> That's a much better solution, I attached a patch with the updated code.
>
> # SELECT oid, pg_tablespace_location(oid) FROM pg_tablespace;
> [...]
> 16388 | /tmp/tblspc1
> 16389 | /tmp/tblspc2

I'd suggest, a similar solution to the one we have adopted in Barman (if
you don't know it: www.pgbarman.org), that is:

--tablespace NAME:LOCATION [--tablespace NAME:location]

I prefer this over the location on the master as this might change over
time (at least more frequently than the tablespace name) and over servers.

> $ pg_basebackup -Xs -D backup/data -T /tmp/tblspc1:$(pwd)/backup/t1 -T
> /tmp/tblspc2:$(pwd)/backup/t2

With the above example, it would become:

$ pg_basebackup -Xs -D backup/data -T tblspc1:$(pwd)/backup/t1 -T
tblspc2:$(pwd)/backup/t2

Thanks,
Gabriele

--
Gabriele Bartolini - 2ndQuadrant Italia
PostgreSQL Training, Services and Support
gabriele(dot)bartolini(at)2ndQuadrant(dot)it | www.2ndQuadrant.it

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