From 9faf84ca446a0e2b6c37dffff16e81db9364b04c Mon Sep 17 00:00:00 2001
From: Eitan Adler <eadler@FreeBSD.org>
Date: Sun, 13 Jan 2013 06:38:31 +0000
Subject: [PATCH] Answer the question "I can not delete or or create files on
 my ZFS pool. How can I fix this?"

Submitted by:       Alexander Yerenkow <yerenkow@gmail.com>
Reviewed by:        -doc
Approved by:        bcr (mentor)

Patch recreated from mailing list content
---
 en_US.ISO8859-1/books/faq/book.xml | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/en_US.ISO8859-1/books/faq/book.xml b/en_US.ISO8859-1/books/faq/book.xml
index bb16120d36..3a2217421a 100644
--- a/en_US.ISO8859-1/books/faq/book.xml
+++ b/en_US.ISO8859-1/books/faq/book.xml
@@ -4472,6 +4472,32 @@ C:\="DOS"</programlisting>
 	      slower.</para>
 	  </answer>
 	</qandaentry>
+
+	<qandaentry>
+	  <question id="zpool-fully-full">
+	    <para>I can not delete or create files on my ZFS pool.
+	      How can I fix this?</para>
+	  </question>
+
+	  <answer>
+	     <para>This could happen because the pool is 100% full.
+	       ZFS requires space on the disk in order to write
+	       transaction metadata.  In order to restore the pool
+	       to a usable state, truncate a file you want to
+	       delete.</para>
+
+	     <screen>&prompt.user; <userinput>truncate -s 0 <replaceable>unimportant-file</replaceable></userinput></screen>
+
+	     <para>File truncation works because a new transaction is
+	       not started, new spare blocks are created instead.</para>
+
+	     <note>
+	       <para>On systems with additional ZFS dataset tuning,
+		 such as deduplication, the space may not be immediately
+		 available</para>
+	     </note>
+	  </answer>
+	</qandaentry>
       </qandaset>
     </sect1>
   </chapter>