Docbookx related errors during installation of virt-manager package.
Environment
- Red Hat Enterprise Linux 5
Issue
-
Installing virt-manager package using yum command reported the following errors.
I/O error : Attempt to load network entity http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd /usr/share/gnome/help/virt-manager/C/virt-manager.xml:840: parser error : Entity 'mdash' not defined system because certain operations — disk and network access, for ^ /usr/share/gnome/help/virt-manager/C/virt-manager.xml:841: parser error : Entity 'mdash' not defined example — have direct access to the hardware. However a
Resolution
-
Reinstall the docbook-dtds package by
yum reinstall docbook-dtds
Root Cause
- These error messages are harmless and that pop up due to docbook-dtds package corruption.
- This will not affect virt-manager binary or any other components.
* What is the docbook-dtds?
The DocBook Document Type Definition (DTD) describes the syntax of technical
documentation texts (articles,books and manual pages).This syntax is XML-compliant
and is developed by the OASIS consortium. This package contains SGML and XML
versions of the DocBook DTD.
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