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31d42506fb
Add <features> and <compat> elements to volume target XML. <compat> is a string which for qcow2 represents the QEMU version it should be compatible with. Valid values are 0.10 and 1.1. 1.1 is implicit if the <features> element is present, otherwise qemu-img default is used. 0.10 can be specified to explicitly create older images after the qemu-img default changes. <features> contains optional features, so far <lazy_refcounts/> is available, which enables caching of reference counters, improving performance for snapshots.
25 lines
653 B
XML
25 lines
653 B
XML
<?xml version="1.0"?>
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<!-- A Relax NG schema for the libvirt volume features XML format -->
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<grammar xmlns="http://relaxng.org/ns/structure/1.0"
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datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
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<define name='compat'>
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<element name='compat'>
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<data type='string'>
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<param name='pattern'>[0-9]+\.[0-9]+</param>
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</data>
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</element>
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</define>
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<define name='fileFormatFeatures'>
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<element name='features'>
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<interleave>
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<optional>
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<element name='lazy_refcounts'>
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<empty/>
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</element>
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</optional>
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</interleave>
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</element>
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</define>
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</grammar>
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