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To change the caching strategy used by the KVM hypervisor:

  1. Edit /etc/extility/nodeconfig/nodetemplate.xml.
  2. Add the following line:

  3. Possible values for cache are as follows: 

    Not all values for cache are supported by all storage modes. Ensure you know which values are supported before changing this value.

    • none
    • writeback
    • unsafe
    • directsync
    • writethrough

  4. For more details on the KVM caching capability, type man kvm on a linux machine and search for cache.
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