mirror of https://gitee.com/openkylin/libvirt.git
332ee4931a
The migration parameter causes zero detection to be enabled and zero blocks are *not* transferred to the destination. This means that users must provide pre-cleared images that read all zero, otherwise the non-zero blocks on destination which reside in places where the source has zero blocks would be kept intact corrupting the image. As not transferring and overwriting the zero blocks is what the feature is supposed to do the users need to provide the proper environment. Document the requirement, both in API and in the virsh man page for the '--migrate-disks-detect-zeroes' option. Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Jiri Denemark <jdenemar@redhat.com> |
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