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29bc4fe646
This patch brings support to manage sheepdog pools and volumes to libvirt.
It uses the "collie" command-line utility that comes with sheepdog for that.
A sheepdog pool in libvirt maps to a sheepdog cluster.
It needs a host and port to connect to, which in most cases
is just going to be the default of localhost on port 7000.
A sheepdog volume in libvirt maps to a sheepdog vdi.
To create one specify the pool, a name and the capacity.
Volumes can also be resized later.
In the volume XML the vdi name has to be put into the <target><path>.
To use the volume as a disk source for virtual machines specify
the vdi name as "name" attribute of the <source>.
The host and port information from the pool are specified inside the host tag.
<disk type='network'>
...
<source protocol="sheepdog" name="vdi_name">
<host name="localhost" port="7000"/>
</source>
</disk>
To work right this patch parses the output of collie,
so it relies on the raw output option. There recently was a bug which caused
size information to be reported wrong. This is fixed upstream already and
will be in the next release.
Signed-off-by: Sebastian Wiedenroth <wiedi@frubar.net>
183 lines
3.9 KiB
XML
183 lines
3.9 KiB
XML
<?xml version="1.0"?>
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<!-- A Relax NG schema for the libvirt storage volume 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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<include href='basictypes.rng'/>
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<start>
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<ref name='vol'/>
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</start>
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<include href='storageencryption.rng'/>
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<define name='vol'>
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<element name='volume'>
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<element name='name'>
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<ref name='name'/>
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</element>
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<optional>
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<element name='key'>
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<text/>
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</element>
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</optional>
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<ref name='source'/>
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<ref name='sizing'/>
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<ref name='target'/>
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<optional>
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<ref name='backingStore'/>
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</optional>
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</element>
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</define>
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<define name='sizing'>
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<optional>
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<element name='capacity'>
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<ref name='scaledInteger'/>
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</element>
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</optional>
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<optional>
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<element name='allocation'>
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<ref name='scaledInteger'/>
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</element>
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</optional>
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</define>
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<define name='permissions'>
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<optional>
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<element name='permissions'>
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<element name='mode'>
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<ref name='unsignedInt'/>
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</element>
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<element name='owner'>
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<ref name='unsignedInt'/>
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</element>
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<element name='group'>
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<ref name='unsignedInt'/>
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</element>
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<optional>
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<element name='label'>
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<text/>
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</element>
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</optional>
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</element>
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</optional>
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</define>
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<define name='target'>
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<element name='target'>
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<optional>
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<element name='path'>
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<data type='anyURI'/>
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</element>
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</optional>
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<ref name='format'/>
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<ref name='permissions'/>
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<optional>
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<ref name='encryption'/>
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</optional>
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</element>
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</define>
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<define name='backingStore'>
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<element name='backingStore'>
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<element name='path'>
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<ref name='absFilePath'/>
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</element>
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<ref name='format'/>
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<ref name='permissions'/>
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</element>
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</define>
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<define name='source'>
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<element name='source'>
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<zeroOrMore>
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<ref name='sourcedev'/>
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</zeroOrMore>
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</element>
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</define>
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<define name='sourcedev'>
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<element name='device'>
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<attribute name='path'>
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<ref name='absFilePath'/>
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</attribute>
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<choice>
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<empty/>
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<ref name='devextents'/>
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</choice>
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</element>
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</define>
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<define name='devextents'>
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<oneOrMore>
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<element name='extent'>
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<attribute name='start'>
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<ref name='unsignedLong'/>
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</attribute>
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<attribute name='end'>
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<ref name='unsignedLong'/>
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</attribute>
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</element>
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</oneOrMore>
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</define>
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<define name='formatdev'>
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<choice>
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<value>none</value>
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<value>auto</value>
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<value>ext2</value>
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<value>ext3</value>
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<value>ext4</value>
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<value>ufs</value>
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<value>iso9660</value>
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<value>udf</value>
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<value>gfs</value>
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<value>gfs2</value>
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<value>vfat</value>
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<value>hfs+</value>
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<value>xfs</value>
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</choice>
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</define>
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<define name='formatfile'>
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<choice>
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<value>unknown</value>
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<value>raw</value>
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<value>dir</value>
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<value>bochs</value>
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<value>cloop</value>
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<value>cow</value>
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<value>dmg</value>
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<value>iso</value>
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<value>qcow</value>
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<value>qcow2</value>
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<value>qed</value>
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<value>vmdk</value>
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<value>vpc</value>
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</choice>
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</define>
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<define name='format'>
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<optional>
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<element name='format'>
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<attribute name='type'>
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<choice>
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<ref name='formatfile'/>
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<ref name='formatdev'/>
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</choice>
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</attribute>
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</element>
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</optional>
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</define>
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<define name='name'>
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<data type='string'>
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<param name="pattern">[a-zA-Z0-9_\+\-\.]+</param>
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</data>
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</define>
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</grammar>
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