From: Bruce Momjian <bruce@momjian.us>
To: Daniel Gustafsson <daniel@yesql.se>
Cc: jim@jdoherty.net
Cc: pgsql-docs@lists.postgresql.org
Subject: Re: Another pg_dump using split and gzip for large databases
Date: Thu, 29 Jul 2021 15:10:34 -0400
Message-ID: <20210729191034.GU9600@momjian.us> (raw)
In-Reply-To: <04E6A89E-19FC-4181-9D95-96B71482944F@yesql.se>
References: <162653459215.701.6323855956817776386@wrigleys.postgresql.org>
<20210728234605.GA9600@momjian.us>
<A38B4103-419D-46F7-9CCF-983DC826723D@yesql.se>
<20210729145855.GF9600@momjian.us>
<247A4697-C00B-47A9-851A-D213CA83A378@yesql.se>
<20210729152925.GJ9600@momjian.us>
<04E6A89E-19FC-4181-9D95-96B71482944F@yesql.se>
On Thu, Jul 29, 2021 at 07:15:21PM +0200, Daniel Gustafsson wrote:
> > On 29 Jul 2021, at 17:29, Bruce Momjian <bruce@momjian.us> wrote:
> >
> > On Thu, Jul 29, 2021 at 05:23:20PM +0200, Daniel Gustafsson wrote:
> >>> On 29 Jul 2021, at 16:58, Bruce Momjian <bruce@momjian.us> wrote:
> >>
> >>> OK, I can adjust it to say "GNU split" or just skip this addition.
> >>
> >> I don't have strong feelings either way, with a slight preference for writing
> >> it as "GNU split" since it's still a good tip for a large amount of readers.
> >
> > Yes, I am on the fence for the same reasons but lean toward moving
> > forward for your same reasons.
>
> Making it two separate examples is a good idea, tipping the scale to a +1 from me.
>
> + If using <application>GNU split</application>, it is possible to
> A small nitpick is that we write this as GNU <application>..</application>
> elsewhere on this page (like GNU tar for example).
OK, updated patch attached. FYI, I put the GNU inside the application
name in the first version because we specifically only want the GNU
version of that application, but I think taking it out for consistency
is fine.
--
Bruce Momjian <bruce@momjian.us> https://momjian.us
EDB https://enterprisedb.com
If only the physical world exists, free will is an illusion.
Attachments:
[text/x-diff] split.diff (1.4K, ../20210729191034.GU9600@momjian.us/2-split.diff)
download | inline diff:diff --git a/doc/src/sgml/backup.sgml b/doc/src/sgml/backup.sgmlindex 8c9186d277..cba32b6eb3 100644--- a/doc/src/sgml/backup.sgml+++ b/doc/src/sgml/backup.sgml@@ -273,10 +273,10 @@ cat <replaceable class="parameter">filename</replaceable>.gz | gunzip | psql <re
The <command>split</command> command
allows you to split the output into smaller files that are
acceptable in size to the underlying file system. For example, to
- make chunks of 1 megabyte:+ make 2 gigabyte chunks:
<programlisting>
-pg_dump <replaceable class="parameter">dbname</replaceable> | split -b 1m - <replaceable class="parameter">filename</replaceable>+pg_dump <replaceable class="parameter">dbname</replaceable> | split -b 2G - <replaceable class="parameter">filename</replaceable>
</programlisting>
Reload with:
@@ -284,6 +284,15 @@ pg_dump <replaceable class="parameter">dbname</replaceable> | split -b 1m - <rep
<programlisting>
cat <replaceable class="parameter">filename</replaceable>* | psql <replaceable class="parameter">dbname</replaceable>
</programlisting>
++ If using GNU <application>split</application>, it is possible to+ use it and <application>gzip</application> together:++<programlisting>+pg_dump <replaceable class="parameter">dbname</replaceable> | split -b 2G --filter='gzip > $FILE.gz'+</programlisting>++ It can be restored using <command>zcat</command>.
</para>
</formalpara>
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-docs@postgresql.org
Cc: bruce@momjian.us, daniel@yesql.se, jim@jdoherty.net, pgsql-docs@lists.postgresql.org
Subject: Re: Another pg_dump using split and gzip for large databases
In-Reply-To: <20210729191034.GU9600@momjian.us>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox