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* Allow the size of the GC reserved file to be specified in nix.conf

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through the new `gc-reserved-space' option.
This commit is contained in:
Eelco Dolstra 2006-02-16 13:58:10 +00:00
parent 651ab439cf
commit 345a95afe9
5 changed files with 62 additions and 14 deletions
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20
doc/manual/conf-file.xml
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@ -52,6 +52,26 @@ env-keep-derivations = false
</varlistentry>
<varlistentry id="conf-gc-reserved-space"><term><literal>gc-reserved-space</literal></term>
<listitem><para>This option specifies how much space should be
reserved in normal use so that the garbage collector can run
succesfully. Since the garbage collector must perform Berkeley DB
transactions, it needs some disk space for itself. However, when
the disk is full, this space is not available, so the collector
would not be able to run precisely when it is most needed.</para>
<para>For this reason, when Nix is run, it allocates a file
<filename>/nix/var/nix/db/reserved</filename> of the size
specified by this option. When the garbage collector is run, this
file is deleted before the Berkeley DB environment is opened.
This should give it enough room to proceed.</para>
<para>The default is <literal>1048576</literal> (1
MiB).</para></listitem>
</varlistentry>
<varlistentry><term><literal>env-keep-derivations</literal></term>
<listitem><para>If <literal>false</literal> (default), derivations