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authorEelco Dolstra <e.dolstra@tudelft.nl>2003-08-13 09:13:52 +0000
committerEelco Dolstra <e.dolstra@tudelft.nl>2003-08-13 09:13:52 +0000
commitb4f88d0ec364f00196127ea29e8db5033368e23a (patch)
treefad418cdf09bd63cdc932b9b25531b75f55eaa29 /doc/manual/troubleshooting.xml
parent469f1eba561403639e777721cacd59e0a6cdc39d (diff)
* Split the book.xml into several xml files.
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+<appendix>
+ <title>Troubleshooting</title>
+
+ <sect1>
+ <title>Database hangs</title>
+
+ <para>
+ If Nix or Fix appear to hang immediately after they are started, Nix's
+ database is probably <quote>wedged</quote>, i.e., some process died while
+ it held a lock on the database. The solution is to ensure that no other
+ processes are accessing the database and then run the following command:
+ </para>
+
+ <screen>
+ $ db_recover -e -h <replaceable>prefix</replaceable>/var/nix/db</screen>
+
+ <para>
+ Here, <replaceable>prefix</replaceable> should be replaced by Nix's
+ installation prefix.
+ </para>
+
+ </sect1>
+
+
+ <sect1>
+ <title>Database logfile removal</title>
+
+ <para>
+ Every time a Nix database transaction takes place, Nix writes a record of
+ this transaction to a <emphasis>log</emphasis> in its database directory
+ to ensure that the operation can be replayed in case of a application or
+ system crash. However, without manual intervention, the log grows
+ indefinitely. Hence, unused log files should be deleted periodically.
+ This can be accomplished using the following command:
+ </para>
+
+ <screen>
+ $ rm `db_archive -a -h
+ <replaceable>prefix</replaceable>/var/nix/db`</screen>
+
+ </sect1>
+
+</appendix>
+
+<!--
+local variables:
+sgml-parent-document: ("book.xml" "appendix")
+end:
+-->