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libvirt/docs/schemas/storagepool.rng
Daniel P. Berrangé bb8ccb050d conf: add control over COW for storage pool directories 
The storage pool code now attempts to disable COW by default on btrfs,
but management applications may wish to override this behaviour. Thus we
introduce a concept of storage pool features:

  <features>
    <cow state='yes|no'/>
  </features>

If the <cow> feature policy is set, it will be enforced. It will always
return an hard error if COW cannot be explicitly set or unset.

Reviewed-by: Neal Gompa <ngompa13@gmail.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-07-23 16:18:09 +01:00

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<?xml version="1.0"?>
<!-- A Relax NG schema for the libvirt storage pool XML format -->
<grammar xmlns="http://relaxng.org/ns/structure/1.0"
datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
<include href='basictypes.rng'/>
<include href='storagecommon.rng'/>
<start>
<ref name='pool'/>
</start>
<define name='pool'>
<element name='pool'>
<choice>
<ref name='pooldir'/>
<ref name='poolfs'/>
<ref name='poolnetfs'/>
<ref name='poollogical'/>
<ref name='pooldisk'/>
<ref name='pooliscsi'/>
<ref name='pooliscsidirect'/>
<ref name='poolscsi'/>
<ref name='poolmpath'/>
<ref name='poolrbd'/>
<ref name='poolsheepdog'/>
<ref name='poolgluster'/>
<ref name='poolzfs'/>
<ref name='poolvstorage'/>
</choice>
</element>
</define>
<define name='pooldir'>
<attribute name='type'>
<value>dir</value>
</attribute>
<interleave>
<ref name='commonmetadata'/>
<ref name='sizing'/>
<ref name='features'/>
<ref name='sourcedir'/>
<ref name='target'/>
</interleave>
</define>
<define name='poolfs'>
<attribute name='type'>
<value>fs</value>
</attribute>
<interleave>
<ref name='commonmetadata'/>
<ref name='sizing'/>
<ref name='features'/>
<ref name='sourcefs'/>
<ref name='target'/>
</interleave>
<optional>
<ref name='fs_mount_opts'/>
</optional>
</define>
<define name='poolnetfs'>
<attribute name='type'>
<value>netfs</value>
</attribute>
<interleave>
<ref name='commonmetadata'/>
<ref name='sizing'/>
<ref name='features'/>
<ref name='sourcenetfs'/>
<ref name='target'/>
</interleave>
<optional>
<ref name='fs_mount_opts'/>
</optional>
</define>
<define name='poollogical'>
<attribute name='type'>
<value>logical</value>
</attribute>
<interleave>
<ref name='commonMetadataNameOptional'/>
<ref name='sizing'/>
<ref name='features'/>
<ref name='sourcelogical'/>
<ref name='targetlogical'/>
</interleave>
</define>
<define name='pooldisk'>
<attribute name='type'>
<value>disk</value>
</attribute>
<interleave>
<ref name='commonmetadata'/>
<ref name='sizing'/>
<ref name='features'/>
<ref name='sourcedisk'/>
<ref name='target'/>
</interleave>
</define>
<define name='pooliscsi'>
<attribute name='type'>
<value>iscsi</value>
</attribute>
<interleave>
<ref name='commonmetadata'/>
<ref name='sizing'/>
<ref name='features'/>
<ref name='sourceiscsi'/>
<ref name='target'/>
</interleave>
</define>
<define name='pooliscsidirect'>
<attribute name='type'>
<value>iscsi-direct</value>
</attribute>
<interleave>
<ref name='commonmetadata'/>
<optional>
<ref name='sizing'/>
</optional>
<ref name='features'/>
<ref name='sourceiscsidirect'/>
</interleave>
</define>
<define name='poolscsi'>
<attribute name='type'>
<value>scsi</value>
</attribute>
<interleave>
<ref name='commonmetadata'/>
<ref name='sizing'/>
<ref name='features'/>
<ref name='sourcescsi'/>
<ref name='target'/>
</interleave>
</define>
<define name='poolmpath'>
<attribute name='type'>
<value>mpath</value>
</attribute>
<interleave>
<ref name='commonmetadata'/>
<ref name='sizing'/>
<ref name='features'/>
<optional>
<ref name='sourcempath'/>
</optional>
<ref name='target'/>
</interleave>
</define>
<define name='poolrbd'>
<attribute name='type'>
<value>rbd</value>
</attribute>
<interleave>
<ref name='commonMetadataNameOptional'/>
<ref name='sizing'/>
<ref name='features'/>
<ref name='sourcerbd'/>
<ref name='refresh'/>
</interleave>
<optional>
<ref name='rbd_config_opts'/>
</optional>
</define>
<define name='poolsheepdog'>
<attribute name='type'>
<value>sheepdog</value>
</attribute>
<interleave>
<ref name='commonMetadataNameOptional'/>
<ref name='sizing'/>
<ref name='features'/>
<ref name='sourcesheepdog'/>
</interleave>
</define>
<define name='poolgluster'>
<attribute name='type'>
<value>gluster</value>
</attribute>
<interleave>
<ref name='commonMetadataNameOptional'/>
<ref name='sizing'/>
<ref name='features'/>
<ref name='sourcegluster'/>
</interleave>
</define>
<define name='poolzfs'>
<attribute name='type'>
<value>zfs</value>
</attribute>
<interleave>
<ref name='commonMetadataNameOptional'/>
<ref name='sizing'/>
<ref name='features'/>
<ref name='sourcezfs'/>
<optional>
<ref name='target'/>
</optional>
</interleave>
</define>
<define name='poolvstorage'>
<attribute name='type'>
<value>vstorage</value>
</attribute>
<interleave>
<ref name='commonMetadataNameOptional'/>
<ref name='sizing'/>
<ref name='features'/>
<ref name='sourcevstorage'/>
<ref name='target'/>
</interleave>
</define>
<define name='sourceinfovendor'>
<interleave>
<optional>
<element name='vendor'>
<attribute name='name'>
<text/>
</attribute>
</element>
</optional>
<optional>
<element name='product'>
<attribute name='name'>
<text/>
</attribute>
</element>
</optional>
</interleave>
</define>
<define name='commonMetadataNameOptional'>
<interleave>
<optional>
<element name='name'>
<ref name='poolName'/>
</element>
</optional>
<optional>
<element name='uuid'>
<ref name='UUID'/>
</element>
</optional>
</interleave>
</define>
<define name='commonmetadata'>
<interleave>
<element name='name'>
<ref name='poolName'/>
</element>
<optional>
<element name='uuid'>
<ref name='UUID'/>
</element>
</optional>
</interleave>
</define>
<define name='sizing'>
<interleave>
<optional>
<element name='capacity'>
<ref name='scaledInteger'/>
</element>
</optional>
<optional>
<element name='allocation'>
<ref name='scaledInteger'/>
</element>
</optional>
<optional>
<element name='available'>
<ref name='scaledInteger'/>
</element>
</optional>
</interleave>
</define>
<define name='features'>
<optional>
<element name='features'>
<interleave>
<optional>
<element name='cow'>
<attribute name="state">
<ref name='virYesNo'/>
</attribute>
</element>
</optional>
</interleave>
</element>
</optional>
</define>
<define name='target'>
<element name='target'>
<interleave>
<element name='path'>
<ref name='absFilePath'/>
</element>
<ref name='permissions'/>
</interleave>
</element>
</define>
<define name='targetlogical'>
<element name='target'>
<interleave>
<optional>
<element name='path'>
<ref name='absFilePath'/>
</element>
</optional>
<ref name='permissions'/>
</interleave>
</element>
</define>
<define name='sourceinfohost'>
<oneOrMore>
<element name='host'>
<attribute name='name'>
<choice>
<ref name="dnsName"/>
<ref name="ipAddr"/>
</choice>
</attribute>
<optional>
<attribute name='port'>
<ref name="PortNumber"/>
</attribute>
</optional>
<empty/>
</element>
</oneOrMore>
</define>
<define name='sourceinfodev'>
<element name='device'>
<attribute name='path'>
<choice>
<ref name='absFilePath'/>
<ref name='genericName'/>
<ref name='IscsiQualifiedName'/>
</choice>
</attribute>
<choice>
<empty/>
<ref name='devextents'/>
</choice>
<optional>
<attribute name="part_separator">
<ref name="virYesNo"/>
</attribute>
</optional>
</element>
</define>
<define name='sourceinfodeviscsidirect'>
<element name='device'>
<attribute name='path'>
<ref name='IscsiQualifiedName'/>
</attribute>
</element>
</define>
<define name='devextents'>
<oneOrMore>
<element name='freeExtent'>
<attribute name='start'>
<ref name='unsignedLong'/>
</attribute>
<attribute name='end'>
<ref name='unsignedLong'/>
</attribute>
</element>
</oneOrMore>
</define>
<define name='sourceinfodir'>
<element name='dir'>
<attribute name='path'>
<ref name='absDirPath'/>
</attribute>
<empty/>
</element>
</define>
<define name='sourceinfonetrelativepath'>
<element name='dir'>
<attribute name='path'>
<ref name='dirPath'/>
</attribute>
<empty/>
</element>
</define>
<define name='sourceinfoname'>
<element name='name'>
<text/>
</element>
</define>
<define name='sourceinfoauth'>
<element name='auth'>
<attribute name='type'>
<choice>
<value>chap</value>
<value>ceph</value>
</choice>
</attribute>
<attribute name='username'>
<text/>
</attribute>
<ref name='sourceinfoauthsecret'/>
</element>
</define>
<define name='sourceinfoauthsecret'>
<element name='secret'>
<choice>
<attribute name='uuid'>
<text/>
</attribute>
<attribute name='usage'>
<text/>
</attribute>
</choice>
</element>
</define>
<define name='sourcezfs'>
<element name='source'>
<interleave>
<ref name='sourceinfoname'/>
<optional>
<ref name='sourceinfodev'/>
</optional>
</interleave>
</element>
</define>
<define name='sourcevstorage'>
<element name='source'>
<interleave>
<ref name='sourceinfoname'/>
</interleave>
</element>
</define>
<define name='sourcefmtfs'>
<optional>
<element name='format'>
<attribute name='type'>
<choice>
<value>auto</value>
<value>ext2</value>
<value>ext3</value>
<value>ext4</value>
<value>ufs</value>
<value>iso9660</value>
<value>udf</value>
<value>gfs</value>
<value>gfs2</value>
<value>vfat</value>
<value>hfs+</value>
<value>xfs</value>
<value>ocfs2</value>
<value>vmfs</value>
</choice>
</attribute>
</element>
</optional>
</define>
<define name='sourcefmtnetfs'>
<optional>
<element name='format'>
<attribute name='type'>
<choice>
<value>auto</value>
<value>nfs</value>
</choice>
</attribute>
</element>
</optional>
</define>
<define name='sourcefmtdisk'>
<optional>
<element name='format'>
<attribute name='type'>
<choice>
<value>unknown</value>
<value>dos</value>
<value>dvh</value>
<value>gpt</value>
<value>mac</value>
<value>bsd</value>
<value>pc98</value>
<value>sun</value>
<value>lvm2</value>
</choice>
</attribute>
<optional>
<ref name='sourceinfovendor'/>
</optional>
</element>
</optional>
</define>
<define name='sourcefmtlogical'>
<optional>
<element name='format'>
<attribute name='type'>
<choice>
<value>unknown</value> <!-- back-compat requires keeping 'unknown' not 'auto' -->
<value>lvm2</value>
</choice>
</attribute>
<optional>
<ref name='sourceinfovendor'/>
</optional>
</element>
</optional>
</define>
<define name='sourcedir'>
<optional>
<element name='source'>
<empty/>
<optional>
<ref name='sourceinfovendor'/>
</optional>
</element>
</optional>
</define>
<define name='sourcefs'>
<element name='source'>
<interleave>
<ref name='sourceinfodev'/>
<ref name='sourcefmtfs'/>
<optional>
<ref name='sourceinfovendor'/>
</optional>
</interleave>
</element>
</define>
<define name='sourcenetfs'>
<element name='source'>
<choice>
<group>
<interleave>
<ref name='sourceinfohost'/>
<ref name='sourceinfodir'/>
<ref name='sourcefmtnetfs'/>
<optional>
<element name='protocol'>
<attribute name='ver'>
<ref name='unsignedInt'/>
</attribute>
</element>
</optional>
<optional>
<ref name='sourceinfovendor'/>
</optional>
</interleave>
</group>
<group>
<interleave>
<ref name='sourceinfohost'/>
<ref name='sourceinfonetrelativepath'/>
<element name='format'>
<attribute name='type'>
<choice>
<value>cifs</value>
<value>glusterfs</value>
</choice>
</attribute>
</element>
<optional>
<ref name='sourceinfovendor'/>
</optional>
</interleave>
</group>
</choice>
</element>
</define>
<define name='sourcelogical'>
<element name='source'>
<interleave>
<oneOrMore>
<optional>
<ref name='sourceinfoname'/>
</optional>
<optional>
<ref name='sourceinfodev'/>
</optional>
</oneOrMore>
<ref name='sourcefmtlogical'/>
<optional>
<ref name='sourceinfovendor'/>
</optional>
</interleave>
</element>
</define>
<define name='sourcedisk'>
<element name='source'>
<interleave>
<ref name='sourceinfodev'/>
<ref name='sourcefmtdisk'/>
<optional>
<ref name='sourceinfovendor'/>
</optional>
</interleave>
</element>
</define>
<define name='sourceiscsi'>
<element name='source'>
<interleave>
<ref name='sourceinfohost'/>
<ref name='sourceinfodev'/>
<optional>
<ref name='initiatorinfo'/>
</optional>
<optional>
<ref name='sourceinfoauth'/>
</optional>
<optional>
<ref name='sourceinfovendor'/>
</optional>
</interleave>
</element>
</define>
<define name='sourceiscsidirect'>
<element name='source'>
<interleave>
<ref name='sourceinfohost'/>
<ref name='sourceinfodeviscsidirect'/>
<ref name='initiatorinfo'/>
<optional>
<ref name='sourceinfoauth'/>
</optional>
</interleave>
</element>
</define>
<define name='sourcescsi'>
<element name='source'>
<interleave>
<ref name='sourceinfoadapter'/>
<optional>
<ref name='sourceinfovendor'/>
</optional>
</interleave>
</element>
</define>
<define name='sourcempath'>
<element name='source'>
<empty/>
</element>
</define>
<define name='sourcerbd'>
<element name='source'>
<interleave>
<ref name='sourceinfoname'/>
<ref name='sourceinfohost'/>
<optional>
<ref name='sourceinfoauth'/>
</optional>
</interleave>
</element>
</define>
<define name='sourcesheepdog'>
<element name='source'>
<interleave>
<ref name='sourceinfohost'/>
<ref name='sourceinfoname'/>
</interleave>
</element>
</define>
<define name='sourcegluster'>
<element name='source'>
<interleave>
<ref name='sourceinfohost'/>
<ref name='sourceinfoname'/>
<optional>
<ref name='sourceinfodir'/>
</optional>
</interleave>
</element>
</define>
<define name='IscsiQualifiedName'>
<data type='string'>
<param name="pattern">iqn\.[0-9]{4}-(0[1-9]|1[0-2])\.[a-zA-Z0-9\.\-]+(:.+)?</param>
</data>
</define>
<define name='refresh'>
<optional>
<element name='refresh'>
<interleave>
<ref name='refreshVolume'/>
</interleave>
</element>
</optional>
</define>
<define name='refreshVolume'>
<optional>
<element name='volume'>
<optional>
<attribute name='allocation'>
<ref name="refreshVolumeAllocation"/>
</attribute>
</optional>
</element>
</optional>
</define>
<!--
Optional storage pool extensions in their own namespace:
"fs" or "netfs"
-->
<define name="fs_mount_opts">
<element name="mount_opts" ns="http://libvirt.org/schemas/storagepool/fs/1.0">
<zeroOrMore>
<element name="option">
<attribute name='name'>
<text/>
</attribute>
</element>
</zeroOrMore>
</element>
</define>
<!--
Optional storage pool extensions in their own namespace:
RBD
-->
<define name="rbd_config_opts">
<element name="config_opts" ns="http://libvirt.org/schemas/storagepool/rbd/1.0">
<zeroOrMore>
<element name="option">
<attribute name='name'>
<text/>
</attribute>
<attribute name='value'>
<text/>
</attribute>
</element>
</zeroOrMore>
</element>
</define>
</grammar>
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