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Revision 1477a16f

ID1477a16f19254c62c0dbddb6978686ea696928a9

Added by Apollon Oikonomopoulos about 13 years ago

KVM: use cache=none for shared disk templates

Disable host cache for externally mirrored disks to avoid cache incoherency.
Without this, migrations between the same two nodes may end up in disk
corruption.

This is a runtime override of cluster defaults, mostly a workaround.
Unfortunately, we cannot use cmdlib._CheckHVParams, as we want to check the
hypervisor parameters in conjunction with the disk template, which is part of
the instance definition.

Signed-off-by: Apollon Oikonomopoulos <>
Signed-off-by: Iustin Pop <>
Reviewed-by: Iustin Pop <>

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