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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>
16 lines
360 B
XML
16 lines
360 B
XML
<pool type='dir'>
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<name>vms</name>
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<uuid>751f8e7e-d2e9-463d-8ffe-d38f5e13a19b</uuid>
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<capacity unit='bytes'>0</capacity>
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<allocation unit='bytes'>0</allocation>
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<available unit='bytes'>0</available>
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<features>
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<cow state='yes'/>
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</features>
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<source>
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</source>
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<target>
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<path>/i/cant/believe/its/not/btrfs</path>
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</target>
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</pool>
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